Updated on 2025/07/04

写真a

 
YOSHIMURA Koji
 
Organization
Scheduled update Professor
Position
Professor
External link

Degree

  • 博士（理学） ( 1995.3   東京大学 )

Research Areas

  • Natural Science / Semiconductors, optical properties of condensed matter and atomic physics

  • Natural Science / Experimental studies related to particle-, nuclear-, cosmic ray and astro-physics

Education

  • The University of Tokyo   理学系研究科   博士課程

    1991.4 - 1995.1

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    Notes： 単位取得退学

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  • The University of Tokyo   理学系研究科   修士課程

    1989.4 - 1991.3

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  • The University of Tokyo   工学系研究科   修士課程

    1986.4 - 1988.3

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  • The University of Tokyo   理科Ｉ類 / 工学部  

    1982.4 - 1986.3

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Research History

  • Okayama University   異分野基礎科学研究所   Professor

    2016.4

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  • Okayama University   極限量子研究コア   Professor

    2013.5 - 2016.3

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  • High Energy Accelerator Research Organization   素粒子原子核研究所   Associate Professor

    2001.1 - 2013.5

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  • The University of Tokyo   素粒子物理国際研究センター   Research Assistant

    1995.1 - 2000.12

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Professional Memberships

 

Papers

  • A method to detect the VUV photons from cooled 229Th:CaF crystals

    Ming Guan, Michael Bartokos, Kjeld Beeks, Yuta Fukunaga, Takahiro Hiraki, Takahiko Masuda, Yuki Miyamoto, Ryoichiro Ogake, Koichi Okai, Noboru Sasao, Fabian Schaden, Thorsten Schumm, Kotaro Shimizu, Sayuri Takatori, Akihiro Yoshimi, Koji Yoshimura

    Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms   562   165647 - 165647   2025.5

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    Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

    DOI： 10.1016/j.nimb.2025.165647

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  • Characterization of the thorium-229 defect structure in CaF2 crystals

    Sayuri Takatori, Martin Pimon, Stephan Pollitt, Michael Bartokos, Kjeld Beeks, Andreas Grüneis, Takahiro Hiraki, Tetsuo Honma, Niyusha Hosseini, Adrian Leitner, Takahiko Masuda, Ira Morawetz, Kiyofumi Nitta, Koichi Okai, Thomas Riebner, Fabian Schaden, Thorsten Schumm, Oki Sekizawa, Tomas Sikorsky, Yoshio Takahashi, Luca Toscani De Col, Rei Yamamoto, Takumi Yomogida, Akihiro Yoshimi, Koji Yoshimura

    New Journal of Physics   2025.4

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    Publishing type：Research paper (scientific journal)   Publisher：IOP Publishing  

    Abstract

    Recent advancements in laser excitation of the low-energy thorium-229 (229Th) nuclear isomeric state in calcium fluoride (CaF2) single crystals render this system a promising candidate for a solid-state nuclear clock. Nonetheless, the precise experimental determination of the microscopic ion configuration surrounding the doped 229Th and its electronic charge state remains a critical challenge. Such characterization is essential for accurately controlling the clock transition and evaluating the performance of this solid-state nuclear clock system. In this study, we use x-ray absorption fine structure spectroscopy of 229Th:CaF2 to investigate the charge state and coordination environment of doped 229Th. The results indicate that 229Th displays a 4+ oxidation state at the substitutional site of a Ca2+ ion, with charge compensated provided by two F- ions positioned at interstitial sites adjacent to 229Th.

    DOI： 10.1088/1367-2630/adce22

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    Other Link： https://iopscience.iop.org/article/10.1088/1367-2630/adce22/pdf

  • Controlling 229Th isomeric state population in a VUV transparent crystal

    Takahiro Hiraki, Koichi Okai, Michael Bartokos, Kjeld Beeks, Hiroyuki Fujimoto, Yuta Fukunaga, Hiromitsu Haba, Yoshitaka Kasamatsu, Shinji Kitao, Adrian Leitner, Takahiko Masuda, Ming Guan, Nobumoto Nagasawa, Ryoichiro Ogake, Martin Pimon, Martin Pressler, Noboru Sasao, Fabian Schaden, Thorsten Schumm, Makoto Seto, Yudai Shigekawa, Kotaro Shimizu, Tomas Sikorsky, Kenji Tamasaku, Sayuri Takatori, Tsukasa Watanabe, Atsushi Yamaguchi, Yoshitaka Yoda, Akihiro Yoshimi, Koji Yoshimura

    Nature Communications   15 ( 1 )   2024.7

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    Publishing type：Research paper (scientific journal)   Publisher：Springer Science and Business Media LLC  

    Abstract

    The radioisotope thorium-229 (229Th) is renowned for its extraordinarily low-energy, long-lived nuclear first-excited state. This isomeric state can be excited by vacuum ultraviolet (VUV) lasers and 229Th has been proposed as a reference transition for ultra-precise nuclear clocks. To assess the feasibility and performance of the nuclear clock concept, time-controlled excitation and depopulation of the 229Th isomer are imperative. Here we report the population of the 229Th isomeric state through resonant X-ray pumping and detection of the radiative decay in a VUV transparent 229Th-doped CaF2 crystal. The decay half-life is measured to 447(25) s, with a transition wavelength of 148.18(42) nm and a radiative decay fraction consistent with unity. Furthermore, we report a new “X-ray quenching” effect which allows to de-populate the isomer on demand and effectively reduce the half-life. Such controlled quenching can be used to significantly speed up the interrogation cycle in future nuclear clock schemes.

    DOI： 10.1038/s41467-024-49631-0

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    Other Link： https://www.nature.com/articles/s41467-024-49631-0

  • Search for Antideuterons of Cosmic Origin Using the BESS-Polar II Magnetic-Rigidity Spectrometer

    K. Sakai, H. Fuke, K. Yoshimura, M. Sasaki, K. Abe, S. Haino, T. Hams, M. Hasegawa, K. C. Kim, M. H. Lee, Y. Makida, J. W. Mitchell, J. Nishimura, M. Nozaki, R. Orito, J. F. Ormes, E. S. Seo, R. E. Streitmatter, N. Thakur, A. Yamamoto, T. Yoshida

    Physical Review Letters   132 ( 13 )   2024.3

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    Publishing type：Research paper (scientific journal)   Publisher：American Physical Society (APS)  

    DOI： 10.1103/physrevlett.132.131001

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    Other Link： http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevLett.132.131001/fulltext

  • Experimental apparatus for detection of radiative decay of $$^{229}$$Th isomer from Th-doped CaF$$_2$$

    Takahiro Hiraki, Kjeld Beeks, Michael Bartokos, Hiroyuki Fujimoto, Yuta Fukunaga, Hiromitsu Haba, Yoshitaka Kasamatsu, Shinji Kitao, Adrian Leitner, Takahiko Masuda, Guan Ming, Nobumoto Nagasawa, Ryoichiro Ogake, Koichi Okai, Martin Pimon, Martin Pressler, Noboru Sasao, Fabian Schaden, Thorsten Schumm, Makoto Seto, Yudai Shigekawa, Koutaro Shimizu, Tomas Sikorsky, Kenji Tamasaku, Sayuri Takatori, Tsukasa Watanabe, Atsushi Yamaguchi, Yoshitaka Yoda, Akihiro Yoshimi, Koji Yoshimura

    Hyperfine Interactions   245 ( 1 )   2024.1

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    Publishing type：Research paper (scientific journal)   Publisher：Springer Science and Business Media LLC  

    DOI： 10.1007/s10751-024-01844-x

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    Other Link： https://link.springer.com/article/10.1007/s10751-024-01844-x/fulltext.html

  • Periodic superradiance in an Er:YSO crystal Reviewed

    Hideaki Hara, Junseok Han, Yasutaka Imai, Noboru Sasao, Akihiro Yoshimi, Koji Yoshimura, Motohiko Yoshimura, Yuki Miyamoto

    Physical Review Research   2024.1

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    Publishing type：Research paper (scientific journal)  

    DOI： 10.1103/PhysRevResearch.6.013005

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  • The upper limit on antideuteron flux with BESS-Polar II

    K.Sakai, K.Abe, H.Fuke, S.Haino, T.Hams, M.Hasegawa, K.C.Kim, M.H.Lee, Y.Makida, J.W.Mitchell, J.Nishimura, M.Nozaki, R.Orito, J.F.Ormes, M.Sasaki, E.S.Seo, R.E.Streitmatter, N.Thakur, A.Yamamoto, T.Yoshida, K.Yoshimura

    Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023)   2023.7

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    Publishing type：Research paper (international conference proceedings)   Publisher：Sissa Medialab  

    DOI： 10.22323/1.444.0134

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  • Vacuum Tltraviolet Search from Thorium-229 Isomer in Crystal Toward Solid-State Nuclear Clock

    S. Takatori, Y. Fukunaga, M. Guan, T. Hiraki, T. Masuda, R. Ogake, K. Okai, N. Sasao, K. Shimizu, S. Uetake, A. Yoshimi, K. Yoshimura, M. Yoshimura, K. Tamasaku, Y. Kasamatsu, Y. Yasuda, K. Beeks, F. Schaden, T. Schumm, S. Kitao, M. Seto, H. Fujimoto, T. Watanabe, K. Konashi, M. Watanabe, H. Haba, Y. Shigekawa, A. Yamaguchi, N. Nagasawa, Y. Yoda

    2023 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium (EFTF/IFCS)   2023.5

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    Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

    DOI： 10.1109/eftf/ifcs57587.2023.10272086

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  • High-sensitivity low-noise photodetector using a large-area silicon photomultiplier

    Takahiko Masuda, Ayami Hiramoto, Daniel G. Ang, Cole Meisenhelder, Cristian D. Panda, Noboru Sasao, Satoshi Uetake, Xing Wu, David P. DeMille, John M. Doyle, Gerald Gabrielse, Koji Yoshimura

    Optics Express   31 ( 2 )   1943 - 1943   2023.1

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    Publishing type：Research paper (scientific journal)   Publisher：Optica Publishing Group  

    The application of silicon photomultiplier (SiPM) technology for weak-light detection at a single photon level has expanded thanks to its better photon detection efficiency in comparison to a conventional photomultiplier tube (PMT). SiPMs with large detection area have recently become commercially available, enabling applications where the photon flux is low both temporarily and spatially. On the other hand, several drawbacks exist in the usage of SiPMs such as a higher dark count rate, many readout channels, slow response time, and optical crosstalk; therefore, users need to carefully consider the trade-offs. This work presents a SiPM-embedded compact large-area photon detection module. Various techniques are adopted to overcome the disadvantages of SiPMs so that it can be generally utilized as an upgrade from a PMT. A simple cooling component and recently developed optical crosstalk suppression method are adopted to reduce the noise which is more serious for larger-area SiPMs. A dedicated readout circuit increases the response frequency and reduces the number of readout channels. We favorably compare this design with a conventional PMT and obtain both higher photon detection efficiency and larger-area acceptance.

    DOI： 10.1364/oe.475109

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    Other Link： https://opg.optica.org/viewmedia.cfm?URI=oe-31-2-1943&seq=0

  • Development of Time- and Energy-Resolved Synchrotron-Radiation-Based Mössbauer Spectroscopy

    S. Kitao, R. Masuda, T. Fujihara, H. Tajima, N. Nagasawa, Y. Yoda, T. Masuda, K. Yoshimura, M. Seto

    Journal of Physics: Conference Series   2380 ( 1 )   012136 - 012136   2022.12

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    Publishing type：Research paper (scientific journal)   Publisher：IOP Publishing  

    Abstract

    Synchrotron-radiation based Mössbauer spectroscopy has become a useful technique capable for investigating various Mössbauer isotopes. For a typical experimental setup, the information associated with the pulse height (that is, energy) in an avalanche photodiode (APD) detector has not been used effectively. By using a system for simultaneous measurement system of time and energy associated with the APD signal, a system for the time- and energy-resolved Mössbauer spectroscopy has been developed. In this system, the pulse height information was converted to the time information through an amplitude-to-time converter applied to one of the divided signals from the APD. The corresponding time information was processed separately from another one of the divided signals. Both signals are recorded by a multi-channel scaler in an event-by-event data acquisition process. The velocity information from the Mössbauer transducer was also recorded as a tag for each signal event. Thus, the Mössbauer spectra with any time- and energy-window can be reconstructed after the data collection process. This system can be used for many purposes in time- and energy-resolved Mössbauer spectroscopy, and shows significant promise for use with other fast detectors and for various types of experiments.

    DOI： 10.1088/1742-6596/2380/1/012136

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    Other Link： https://iopscience.iop.org/article/10.1088/1742-6596/2380/1/012136/pdf

  • Recent progress and future prospects of hyperon nucleon scattering experiment

    Koji Miwa, Takuya Nanamura, Tamao Sakao, J. K. Ahn, Y. Akazawa, T. Aramaki, S. Ashikaga, S. Callier, N. Chiga, N. Chiga, S. W. Choi, H. Ekawa, P. Evtoukhovitch, N. Fujioka, M. Fujita, T. Gogami, T. Harada, S. Hasegawa, S. H. Hayakawa, R. Honda, S. Hoshino, K. Hosomi, M. Ichikawa, Y. Ichikawa, M. Ieiri, M. Ikedai, K. Imai, Y. Ishikawa, S. Ishimoto, W. S. Jung, S. Kajikawa, H. Kanauchi, H. Kanda, T. Kitaoka, B. M. Kang, H. Kawai, S. H. Kim, K. Kobayashi, T. Koike, K. Matsuda, Y. Matsumoto, S. Nagao, R. Nagatomi, Y. Nakada, M. Nakagawa, I. Nakamura, M. Naruki, S. Ozawa, L. Raux, T. G. Rogers, A. Sakaguchi, H. Sako, S. Sato, T. Shiozaki, K. Shirotori, K. N. Suzuki, S. Suzuki, M. Tabata, C. d. L. Taille, H. Takahashi, T. Takahashi, T. N. Takahashi, H. Tamura, M. Tanaka, K. Tanida, Z. Tsamalaidze, M. Ukai, H. Umetsu, S. Wada, T. O. Yamamoto, J. Yoshida, K. Yoshimura

    EPJ Web of Conferences   271   04001 - 04001   2022.11

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    Publishing type：Research paper (scientific journal)   Publisher：EDP Sciences  

    A new hyperon-proton scattering experiment, dubbed J-PARC E40, was performed to measure differential cross sections of the Σ+p, Σ−p elastic scatterings and the Σ−p → Λn scattering by identifying a lot of Σ particles in the momentum ranging from 0.4 to 0.8 GeV/c produced by the π±p → K+Σ± reactions. We successfully measured the differential cross sections of these three channels with a drastically improved accuracy with a fine angular step. These new data will become important experimental constraints to improve the theories of the two-body baryon-baryon interactions. Following this success, we proposed a new experiment to measure the differential cross sections and spin observables by using a highly polarized Λ beam for providing quantitative information on the ΛN interaction. The results of three Σp channels and future prospects of the Λp scattering experiment are described.

    DOI： 10.1051/epjconf/202227104001

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  • SiPM module for the ACME III electron EDM search Reviewed

    A. Hiramoto, T. Masuda, D.G. Ang, C. Meisenhelder, C. Panda, N. Sasao, S. Uetake, X. Wu, D. Demille, J.M. Doyle, G. Gabrielse, K. Yoshimura

    Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment   167513 - 167513   2022.10

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

    DOI： 10.1016/j.nima.2022.167513

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  • Measurement of differential cross sections for Σ+p elastic scattering in the momentum range 0.44–0.80 GeV/c

    T Nanamura, K Miwa, J K Ahn, Y Akazawa, T Aramaki, S Ashikaga, S Callier, N Chiga, S W Choi, H Ekawa, P Evtoukhovitch, N Fujioka, M Fujita, T Gogami, T K Harada, S Hasegawa, S H Hayakawa, R Honda, S Hoshino, K Hosomi, M Ichikawa, Y Ichikawa, M Ieiri, M Ikeda, K Imai, Y Ishikawa, S Ishimoto, W S Jung, S Kajikawa, H Kanauchi, H Kanda, T Kitaoka, B M Kang, H Kawai, S H Kim, K Kobayashi, T Koike, K Matsuda, Y Matsumoto, S Nagao, R Nagatomi, Y Nakada, M Nakagawa, I Nakamura, M Naruki, S Ozawa, L Raux, T G Rogers, A Sakaguchi, T Sakao, H Sako, S Sato, T Shiozaki, K Shirotori, K N Suzuki, S Suzuki, M Tabata, C d L Taille, H Takahashi, T Takahashi, T N Takahashi, H Tamura, M Tanaka, K Tanida, Z Tsamalaidze, M Ukai, H Umetsu, S Wada, T O Yamamoto, J Yoshida, K Yoshimura

    Progress of Theoretical and Experimental Physics   2022 ( 9 )   2022.8

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    Publishing type：Research paper (scientific journal)   Publisher：Oxford University Press (OUP)  

    Abstract

    We performed a novel Σ+p scattering experiment at the J-PARC Hadron Experimental Facility. Approximately 2400 Σ+p elastic scattering events were identified from 4.9 × 107 tagged Σ+ particles in the Σ+ momentum range 0.44–0.80 GeV/c. The differential cross sections of the Σ+p elastic scattering were derived with much better precision than in previous experiments. The obtained differential cross sections were approximately 2 mb/sr or less, which were not as large as those predicted by the fss2 and FSS models based on the quark cluster model in the short-range region. By performing phase-shift analyses for the obtained differential cross sections, we experimentally derived the phase shifts of the 3S1 and 1P1 channels for the first time. The phase shift of the 3S1 channel, where a large repulsive core was predicted owing to the Pauli effect between quarks, was evaluated as $20^\circ \lt |\delta _{^3S_1}|\lt 35^\circ$. If the sign of $\delta _{^3S_1}$ is assumed to be negative, the interaction in this channel is moderately repulsive, as the Nijmegen extended-sort-core models predicted.

    DOI： 10.1093/ptep/ptac101

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  • Precise Measurement of Differential Cross Sections of the Σ-p → Λn Reaction in Momentum Range 470-650 MeV /c Reviewed

    K. Miwa, J. K. Ahn, Y. Akazawa, T. Aramaki, S. Ashikaga, S. Callier, N. Chiga, S. W. Choi, H. Ekawa, P. Evtoukhovitch, N. Fujioka, M. Fujita, T. Gogami, T. Harada, S. Hasegawa, S. H. Hayakawa, R. Honda, S. Hoshino, K. Hosomi, M. Ichikawa, Y. Ichikawa, M. Ieiri, M. Ikeda, K. Imai, Y. Ishikawa, S. Ishimoto, W. S. Jung, S. Kajikawa, H. Kanauchi, H. Kanda, T. Kitaoka, B. M. Kang, H. Kawai, S. H. Kim, K. Kobayashi, T. Koike, K. Matsuda, Y. Matsumoto, S. Nagao, R. Nagatomi, Y. Nakada, M. Nakagawa, I. Nakamura, T. Nanamura, M. Naruki, S. Ozawa, L. Raux, T. G. Rogers, A. Sakaguchi, T. Sakao, H. Sako, S. Sato, T. Shiozaki, K. Shirotori, K. N. Suzuki, S. Suzuki, M. Tabata, C. D.L. Taille, H. Takahashi, T. Takahashi, T. N. Takahashi, H. Tamura, M. Tanaka, K. Tanida, Z. Tsamalaidze, M. Ukai, H. Umetsu, S. Wada, T. O. Yamamoto, J. Yoshida, K. Yoshimura

    Physical Review Letters   128 ( 7 )   072501   2022.2

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    Publishing type：Research paper (scientific journal)  

    DOI： 10.1103/PhysRevLett.128.072501

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  • Measurement of the differential cross sections of the elastic scattering in momentum range 470 to 850 MeV/c Reviewed

    K. Miwa, J. K. Ahn, Y. Akazawa, T. Aramaki, S. Ashikaga, S. Callier, N. Chiga, S. W. Choi, H. Ekawa, P. Evtoukhovitch, N. Fujioka, M. Fujita, T. Gogami, T. Harada, S. Hasegawa, S. H. Hayakawa, R. Honda, S. Hoshino, K. Hosomi, M. Ichikawa, Y. Ichikawa, M. Ieiri, M. Ikeda, K. Imai, Y. Ishikawa, S. Ishimoto, W. S. Jung, S. Kajikawa, H. Kanauchi, H. Kanda, T. Kitaoka, B. M. Kang, H. Kawai, S. H. Kim, K. Kobayashi, T. Koike, K. Matsuda, Y. Matsumoto, S. Nagao, R. Nagatomi, Y. Nakada, M. Nakagawa, I. Nakamura, T. Nanamura, M. Naruki, S. Ozawa, L. Raux, T. G. Rogers, A. Sakaguchi, T. Sakao, H. Sako, S. Sato, T. Shiozaki, K. Shirotori, K. N. Suzuki, S. Suzuki, M. Tabata, C. d.L. Taille, H. Takahashi, T. Takahashi, T. N. Takahashi, H. Tamura, M. Tanaka, K. Tanida, Z. Tsamalaidze, M. Ukai, H. Umetsu, S. Wada, T. O. Yamamoto, J. Yoshida, K. Yoshimura

    Physical Review C   104 ( 4 )   2021.10

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    Publishing type：Research paper (scientific journal)  

    DOI： 10.1103/PhysRevC.104.045204

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  • Estimation of radiative half-life of Th229m by half-life measurement of other nuclear excited states in Th229

    Y. Shigekawa, A. Yamaguchi, K. Suzuki, H. Haba, T. Hiraki, H. Kikunaga, T. Masuda, S. Nishimura, N. Sasao, A. Yoshimi, K. Yoshimura

    Physical Review C   104 ( 2 )   2021.8

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    Publishing type：Research paper (scientific journal)   Publisher：American Physical Society (APS)  

    DOI： 10.1103/physrevc.104.024306

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    Other Link： http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevC.104.024306/fulltext

  • Suppression of the optical crosstalk in a multi-channel silicon photomultiplier array

    Takahiko Masuda, Daniel G. Ang, Nicholas R. Hutzler, Cole Meisenhelder, Noboru Sasao, Satoshi Uetake, Xing Wu, David DeMille, Gerald Gabrielse, John M. Doyle, Koji Yoshimura

    Optics Express   29 ( 11 )   16914 - 16914   2021.5

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    Publishing type：Research paper (scientific journal)   Publisher：The Optical Society  

    DOI： 10.1364/oe.424460

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  • Simulation Study of Laser Ionization of Muonium by 1S-2S Excitation for the Muon g − 2/EDM Experiment at J-PARC

    Ce Zhang, Hideaki Hara, Takahiro Hiraki, Yutaka Ikedo, Yasutaka Imai, Katsuhiko Ishida, Saeid Kamal, Naritoshi Kawamura, Akihiro Koda, Yajun Mao, Takahiko Masuda, Tsutomu Mibe, Yasuhiro Miyake, Yuki Miyamoto, Yu Oishi, Masashi Otani, Patrick Strasser, Koichiro Shimomura, Kazuhito Suzuki, Satoshi Uetake, Takayuki Yamazaki, Shinsuke Yamamoto, Koji Yoshimura, Mitsuhiro Yoshida

    Proceedings of the 3rd J-PARC Symposium (J-PARC2019)   2021.3

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    Publishing type：Research paper (international conference proceedings)   Publisher：Journal of the Physical Society of Japan  

    DOI： 10.7566/jpscp.33.011125

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  • Establishment of a Modern Experimental Technique of a \(\Sigma p\) Scattering Experiment at J-PARC Reviewed

    Yuya Akazawa, J. K. Ahn, T. Aramaki, S. Ashikaga, S. Callier, N. Chiga, S. W. Choi, H. Ekawa, P. Evtoukhovitch, N. Fujioka, M. Fujita, T. Gogami, T. Harada, S. Hasegawa, S. Hayakawa, R. Honda, S. Hoshino, K. Hosomi, M. Ichikawa, Y. Ichikawa, M. Ieiri, M. Ikeda, K. Imai, Y. Ishikawa, S. Ishimoto, W. S. Jung, S. Kajikawa, H. Kanauchi, H. Kanda, B. M. Kang, H. Kawai, S. H. Kim, K. Kobayashi, T. Koike, K. Matsuda, Y. Matsumoto, K. Miwa, S. Nagao, R. Nagatomi, Y. Nakada, M. Nakagawa, I. Nakamura, T. Nanamura, M. Naruki, S. Ozawa, L. Raux, T. Rogers, A. Sakaguchi, T. Sakao, H. Sako, S. Sato, T. Shiozaki, K. Shirotori, K. N. Suzuki, S. Suzuki, M. Tabata, C. d. L. Taille, H. Takahashi, T. Takahashi, T. N. Takahashi, H. Tamura, M. Tanaka, K. Tanida, Z. Tsamalaidze, H. Umetsu, M. Ukai, T. O. Yamamoto, J. Yoshida, K. Yoshimura

    Proceedings of the 3rd J-PARC Symposium (J-PARC2019)   2021.3

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    Publishing type：Research paper (international conference proceedings)   Publisher：Journal of the Physical Society of Japan  

    DOI： 10.7566/jpscp.33.011134

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  • Study of \(\Lambda \) Identification Method by the \(\pi ^{ - }p \to K^{0}\Lambda \) Reaction for a \(\Lambda p\) Scattering Experiment at J-PARC Reviewed

    T. Sakao, J. K. Ahn, Y. Akazawa, T. Aramaki, S. Ashikaga, S. Callier, S. W. Choi, P. Evtoukhovitch, N. Fujioka, M. Fujita, T. Gogami, T. Harada, S. Hasegawa, S. H. Hayakawa, R. Honda, S. Hoshino, K. Hosomi, M. Ichikawa, Y. Ichikawa, M. Ikeda, K. Imai, Y. Ishikawa, S. Ishimoto, W. S. Jung, S. Kajikawa, H. Kanauchi, H. Kanda, B. M. Kang, H. Kawai, S. H. Kim, K. Kobayashi, K. Matsuda, Y. Matsumoto, K. Miwa, S. Nagao, R. Nagatomi, Y. Nakada, M. Nakagawa, I. Nakamura, T. Nanamura, M. Naruki, S. Ozawa, L. Raux, T. Rogers, A. Sakaguchi, H. Sako, S. Sato, K. Shirotori, K. N. Suzuki, S. Suzuki, M. Tabata, C. d. L. Taille, H. Takahashi, T. N. Takahashi, T. Takahashi, M. Tanaka, K. Tanida, H. Tamura, Z. Tsamalaidze, M. Ukai, H. Umetsu, T. O. Yamamoto, J. Yoshida, K. Yoshimura

    Proceedings of the 3rd J-PARC Symposium (J-PARC2019)   2021.3

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    Publishing type：Research paper (international conference proceedings)   Publisher：Journal of the Physical Society of Japan  

    DOI： 10.7566/jpscp.33.011133

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  • Absolute X-ray energy measurement using a high-accuracy angle encoder

    Takahiko Masuda, Tsukasa Watanabe, Kjeld Beeks, Hiroyuki Fujimoto, Takahiro Hiraki, Hiroyuki Kaino, Shinji Kitao, Yuki Miyamoto, Koichi Okai, Noboru Sasao, Makoto Seto, Thorsten Schumm, Yudai Shigekawa, Kenji Tamasaku, Satoshi Uetake, Atsushi Yamaguchi, Yoshitaka Yoda, Akihiro Yoshimi, Koji Yoshimura

    Journal of Synchrotron Radiation   28 ( 1 )   111 - 119   2021.1

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    Publishing type：Research paper (scientific journal)   Publisher：International Union of Crystallography (IUCr)  

    DOI： 10.1107/s1600577520014526

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  • Study of ∑N interaction from the ∑p scattering experiment at J-PARC

    K. Miwa, J.K. Ahn, Y. Akazawa, T. Aramaki, S. Ashikaga, S. Callier, N. Chiga, S. W. Choi, H. Ekawa, P. Evtoukhovitch, N. Fujioka, M. Fujita, T. Gogami, T. Harada, S. Hasegawa, S.H. Hayakawa, R. Honda, S. Hoshino, K. Hosomi, M. Ichikawa, Y. Ichikawa, M. Ieiri, M. Ikeda, K. Imai, Y. Ishikawa, S. Ishimoto, W. S. Jung, S. Kajikawa, H. Kanauchi, H. Kanda, B. M. Kang, H. Kawai, S. H. Kim, K. Kobayashi, T. Koike, K. Matsuda, Y. Matsumoto, S. Nagao, R. Nagatomi, Y. Nakada, M. Nakagawa, I. Nakamura, T. Nanamura, M. Naruki, S. Ozawa, L. Raux, T. Rogers, A. Sakaguchi, T. Sakao, H. Sako, S. Sato, T. Shiozaki, K. Shirotori, K. N. Suzuki, S. Suzuki, M. Tabata, C. d. L. Taille, H. Takahashi, T. Takahashi, T. N. Takahashi, H. Tamura, M. Tanaka, K. Tanida, Z. Tsamalaidze, M. Ukai, H. Umetsu, T. O. Yamamoto, J. Yoshida, K. Yoshimura

    Journal of Physics: Conference Series   1643 ( 1 )   012174 - 012174   2020.12

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    Abstract

    A high statistics ∑p scattering experiment has been performed at the K1.8 beamline in the J-PARC Hadron Experimental Facility. Data for momentum-tagged ∑− beam running in a liquid hydrogen target were accumulated by detecting the ${\pi }_{}^{-}p\to {K}_{}^{+}{\sum }_{}^{-}$ reaction with a high intensity π− beam of 20 M/spill. The number of the Σ− beam was about 1.7 × 107 in total. The ∑−ρ elastic scattering and the ∑−p → Λn inelastic scattering events were successfully observed with about 100 times larger statistics than that in past experiments.

    DOI： 10.1088/1742-6596/1643/1/012174

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  • Operation of Multi-MPPC System for Cylindrical Scintillation Fiber Tracker Reviewed

    Yuya Akazawa, J. K. Ahn, T. Aramaki, S. Ashikaga, S. Callier, N. Chiga, S. W. Choi, H. Ekawa, P. Evtoukhovitch, N. Fujioka, M. Fujita, S. Hasegawa, S. Hayakawa, R. Honda, S. Hoshino, K. Hosomi, M. Ichikawa, Y. Ichikawa, M. Ieiri, M. Ikeda, K. Imai, Y. Ishikawa, S. Ishimoto, W. S. Jung, H. Kanauchi, H. Kanda, B. M. Kang, H. Kawai, S. H. Kim, K. Kobayashi, T. Koike, K. Matsuda, Y. Matsumoto, K. Miwa, R. Nagatomi, Y. Nakada, M. Nakagawa, I. Nakamura, T. Nanamura, M. Naruki, S. Ozawa, L. Raux, A. Sakaguchi, H. Sako, S. Sato, T. Shiozaki, K. Shirotori, K. Suzuki, S. Suzuki, M. Tabata, C. d. L. Taille, H. Takahashi, T. Takahashi, T. N. Takahashi, H. Tamura, Z. Tsamalaidze, H. Umetsu, M. Ukai, T. O. Yamamoto, K. Yoshimura

    Proceedings of the 5th International Workshop on New Photon-Detectors (PD18)   2019.11

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    DOI： 10.7566/jpscp.27.011008

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  • A Σp Scattering Experiment at J-PARC and the Analysis Status Reviewed

    Yoshiyuki Nakada, Jung Keun Ahn, Yuya Akazawa, Takashi Aramaki, Sakiko Ashikaga, Stephane Callier, Nobuyuki Chiga, Sung Wook Choi, Hiroyuki Ekawa, Petr Evtoukhovitch, Norina Fujioka, Manami Fujita, Shoichi Hasegawa, Shuhei Hayakawa, Ryotaro Honda, Suharu Hoshino, Kenji Hosomi, Masaya Ichikawa, Yudai Ichikawa, Masaharu Ieiri, Michihiko Ikeda, Ken’ichi Imai, Yuji Ishikawa, Shigeru Ishimoto, Woo Seung Jung, Honoka Kanauchi, Hiroki Kanda, Byung Min Kang, Hideyuki Kawai, Shin Hyung Kim, Kazuya Kobayashi, Takeshi Koike, Kumpei Matsuda, Yuki Matsumoto, Koji Miwa, Ryohei Nagatomi, Manami Nakagawa, Isamu Nakamura, Takuya Nanamura, Megumi Naruki, Shotaro Ozawa, Ludovic Raux, Atsushi Sakaguchi, Hiroyuki Sako, Susumu Sato, Takehiro Shiozaki, Kotaro Shirotori, Kazuki Suzuki, Shoji Suzuki, Makoto Tabata, Christophe de La Taille, Hitoshi Takahashi, Toshiyuki Takahashi, Tomonori Takahashi, Hirokazu Tamura, Manobu Tanaka, Kiyoshi Tanida, Zviadi Tsamalaidze, Mifuyu Ukai, Hiroo Umetsu, Takeshi O. Yamamoto, Seong Bae Yang, Koji Yoshimura

    JPS Conf. Proc. (Proceedings of the 8th International Conference on Quarks and Nuclear Physics (QNP2018))   26   023024-1 - 023024-5   2019.11

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    DOI： 10.7566/jpscp.26.023024

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  • Development of a measurement system enabling the reconstruction of gamma-ray time spectra by simultaneous recording of energy and time information

    Hiroyuki Tajima, Shinji Kitao, Ryo Masuda, Yasuhiro Kobayashi, Takahiko Masuda, Koji Yoshimura, Makoto Seto

    JAPANESE JOURNAL OF APPLIED PHYSICS   58 ( 10 )   2019.10

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    DOI： 10.7567/1347-4065/ab3f19

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    arXiv

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  • X-ray pumping of the 229Th nuclear clock isomer Reviewed

    Takahiko Masuda, Akihiro Yoshimi, Akira Fujieda, Hiroyuki Fujimoto, Hiromitsu Haba, Hideaki Hara, Takahiro Hiraki, Hiroyuki Kaino, Yoshitaka Kasamatsu, Shinji Kitao, Kenji Konashi, Yuki Miyamoto, Koichi Okai, Sho Okubo, Noboru Sasao, Makoto Seto, Thorsten Schumm, Yudai Shigekawa, Kenta Suzuki, Simon Stellmer, Kenji Tamasaku, Satoshi Uetake, Makoto Watanabe, Tsukasa Watanabe, Yuki Yasuda, Atsushi Yamaguchi, Yoshitaka Yoda, Takuya Yokokita, Motohiko Yoshimura, Koji Yoshimura

    Nature   573 ( 7773 )   238 - 242   2019.9

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    DOI： 10.1038/s41586-019-1542-3

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  • X-ray pumping of the Th-229 nuclear clock isomer

    Takahiko Masuda, Akihiro Yoshimi, Akira Fujieda, Hiroyuki Fujimoto, Hiromitsu Haba, Hideaki Hara, Takahiro Hiraki, Hiroyuki Kaino, Yoshitaka Kasamatsu, Shinji Kitao, Kenji Konashi, Yuki Miyamoto, Koichi Okai, Sho Okubo, Noboru Sasao, Makoto Seto, Thorsten Schumm, Yudai Shigekawa, Kenta Suzuki, Simon Stellmer, Kenji Tamasaku, Satoshi Uetake, Makoto Watanabe, Tsukasa Watanabe, Yuki Yasuda, Atsushi Yamaguchi, Yoshitaka Yoda, Takuya Yokokita, Motohiko Yoshimura, Koji Yoshimura

    NATURE   573 ( 7773 )   238 - +   2019.2

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    DOI： 10.1038/s41586-019-1542-3

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    Other Link： http://arxiv.org/pdf/1902.04823v1

  • Coherent two-photon emission from hydrogen molecules excited by counter- propagating laser pulses

    Takahiro Hiraki, Hideaki Hara, Yuki Miyamoto, Kei Imamura, Takahiko Masuda, Noboru Sasao, Satoshi Uetake, Akihiro Yoshimi, Koji Yoshimura, Motohiko Yoshimura

    JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS   52 ( 4 )   2019.2

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    DOI： 10.1088/1361-6455/aafbd0

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    Other Link： http://arxiv.org/pdf/1806.04005v2

  • Energy response of X-rays under high flux conditions using a thin APD for the energy range of 6-33 keV

    T. Masuda, T. Hiraki, H. Kaino, S. Kishimoto, Y. Miyamoto, K. Okai, S. Okubo, R. Ozaki, N. Sasao, K. Suzuki, S. Uetake, A. Yoshimi, K. Yoshimura

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   913   72 - 77   2019.1

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    DOI： 10.1016/j.nima.2018.10.029

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  • Sigma p scattering experiment at J-PARC - results of commissioning run -

    K. Miwa, J. K. Ahn, Y. Akazawa, T. Aramaki, S. Ashikaga, S. Callier, N. Chiga, S. W. Choi, H. Ekawa, P. Evtoukhovitch, N. Fujioka, M. Fujita, S. Hasegawa, S. Hayakawa, R. Honda, S. Hoshino, K. Hosomi, M. Ichikawa, Y. Ichikawa, M. Ieiri, M. Ikeda, K. Imai, Y. Ishikawa, S. Ishimoto, W. S. Jung, H. Kanauchi, H. Kanda, B. M. Kang, H. Kawai, S. H. Kim, K. Kobayashi, T. Koike, K. Matsuda, Y. Matsumoto, R. Nagatomi, Y. Nakada, M. Nakagawa, I. Nakamura, T. Nanamura, M. Naruki, S. Ozawa, L. Raux, A. Sakaguchi, H. Sako, S. Sato, T. Shiozaki, K. Shirotori, K. Suzuki, S. Suzuki, M. Tabata, C. d. L. Taille, H. Takahashi, T. Takahashi, T. N. Takahashi, H. Tamura, Z. Tsamalaidze, H. Umetsu, M. Ukai, T. O. Yamamoto, K. Yoshimura

    13TH INTERNATIONAL CONFERENCE ON HYPERNUCLEAR AND STRANGE PARTICLE PHYSICS (HYP2018)   2130   2019

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    DOI： 10.1063/1.5118374

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  • Search for cosmic-ray antideuterons with BESS-polar II

    K. Sakai, K. Abe, H. Fuke, S. Haino, T. Hams, M. Hasegawa, K. C. Kim, M. H. Lee, Y. Makida, J. W. Mitchell, J. Nishimura, M. Nozaki, R. Orito, J. F. Ormes, N. Picot-Clemente, M. Sasaki, E. S. Seo, R. E. Streitmatter, J. Suzuki, K. Tanaka, N. Thakur, A. Yamamoto, T. Yoshida, K. Yoshimura

    Proceedings of Science   358   2019

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  • Geometry-dependent spectra and coherent-transient measurement of nearly degenerate four-wave mixing using two-photon resonance

    Hideaki Hara, Yuki Miyamoto, Takahiro Hiraki, Kei Imamura, Takahiko Masuda, Noboru Sasao, Satoshi Uetake, Akihiro Yoshimi, Koji Yoshimura, Motohiko Yoshimura

    JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS   52 ( 23 )   2018.10

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  • Multi-MW accelerator target material properties under proton irradiation at Brookhaven National Laboratory linear isotope producer

    N. Simos, H. Ludewig, H. Kirk, E. Dooryhee, S. Ghose, Z. Zhong, H. Zhong, S. Makimura, K. Yoshimura, J. R. J. Bennett, G. Kotsinas, Z. Kotsina, K. T. McDonald

    PHYSICAL REVIEW ACCELERATORS AND BEAMS   21 ( 5 )   2018.5

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    DOI： 10.1103/PhysRevAccelBeams.21.053001

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  • Nuclear resonant scattering experiment with fast time response: Photonuclear excitation of Hg-201

    A. Yoshimi, H. Hara, T. Hiraki, Y. Kasamatsu, S. Kitao, Y. Kobayashi, K. Konashi, R. Masuda, T. Masuda, Y. Miyamoto, K. Okai, S. Okubo, R. Ozaki, N. Sasao, O. Sato, M. Seto, T. Schumm, Y. Shigekawa, S. Stellmer, K. Suzuki, S. Uetake, M. Watanabe, A. Yamaguchi, Y. Yasuda, Y. Yoda, K. Yoshimura, M. Yoshimura

    PHYSICAL REVIEW C   97 ( 2 )   2018.2

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    DOI： 10.1103/PhysRevC.97.024607

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  • Vibrational excitation of hydrogen molecules by two-photon absorption and third-harmonic generation

    Yuki Miyamoto, Hideaki Hara, Takahiro Hiraki, Takahiko Masuda, Noboru Sasao, Satoshi Uetake, Akihiro Yoshimi, Koji Yoshimura, Motohiko Yoshimura

    JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS   51 ( 1 )   2018.1

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    DOI： 10.1088/1361-6455/aa9782

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  • Frequency dependence of coherently amplified two-photon emission from hydrogen molecules

    Hideaki Hara, Yuki Miyamoto, Takahiro Hiraki, Takahiko Masuda, Noboru Sasao, Satoshi Uetake, Akihiro Yoshimi, Koji Yoshimura, Motohiko Yoshimura

    PHYSICAL REVIEW A   96 ( 6 )   2017.12

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    DOI： 10.1103/PhysRevA.96.063827

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  • The results from BESS-Polar experiment

    K. Abe, H. Fuke, S. Haino, T. Hams, M. Hasegawa, K. C. Kim, M. H. Lee, Y. Makida, J. W. Mitchell, J. Nishimura, M. Nozaki, R. Orito, J. F. Ormes, N. Picot-Clemente, K. Sakai, M. Sasaki, E. S. Seo, R. E. Streitmatter, J. Suzuki, K. Tanaka, N. Thakur, A. Yamamoto, T. Yoshida, K. Yoshimura

    ADVANCES IN SPACE RESEARCH   60 ( 4 )   806 - 814   2017.8

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    DOI： 10.1016/j.asr.2016.11.004

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  • High Statistics Σp Scattering Experiment Using High Intensity Pion Beams at J-PARC Reviewed

    K. Miwa, J. K. Ahn, Y. Akazawa, S. Callier, N. Chiga, P. Evtoukhovitch, S. Hasegawa, S. Hayakawa, T. Hayakawa, K. Hosomi, R. Honda, S. H. Hwang, M. Ieiri, M. Ikeda, K. Imai, S. Ishimoto, W. S. Jung, H. Kanda, K. Kobayashi, T. Koike, Y. Kondo, S. H. Kim, J. L. Kim, J. W. Lee, Y. Matsumoto, M. Moritsu, Y. Nakada, M. Nakagawa, I. Nakamura, M. Naruki, Y. Ogura, L. Raux, A. Sakaguchi, H. Sako, Y. Sasaki, S. Sato, T. Shiozaki, K. Shirotori, H. Sugimura, S. Suzuki, C. d. L. Taille, H. Takahashi, T. Takahashi, T. N. Takahashi, H. Tamura, M. Tanaka, K. Tanida, Z. Tsamalaidze, M. Ukai, H. Umetsu, T. O. Yamamoto, K. Yoshimura

    Proceedings of the 12th International Conference on Hypernuclear and Strange Particle Physics (HYP2015)   2017.7

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    DOI： 10.7566/jpscp.17.041002

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  • Fast x-ray detector system with simultaneous measurement of timing and energy for a single photon

    T. Masuda, S. Okubo, H. Hara, T. Hiraki, S. Kitao, Y. Miyamoto, K. Okai, R. Ozaki, N. Sasao, M. Seto, S. Uetake, A. Yamaguchi, Y. Yoda, A. Yoshimi, K. Yoshimura

    REVIEW OF SCIENTIFIC INSTRUMENTS   88 ( 6 )   2017.6

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    DOI： 10.1063/1.4989405

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  • Precise measurements of hydrogen and helium isotopes with BESS-Polar II

    N. Picot-Clémente, K. Abe, H. Fuke, S. Haino, T. Hams, M. Hasegawa, A. Horikoshi, A. Itazaki, K. C. Kim, T. Kumazawa, A. Kusumoto, M. H. Lee, Y. Makida, S. Matsuda, Y. Matsukawa, K. Matsumoto, J. W. Mitchell, A. A. Moiseev, J. Nishimura, M. Nozaki, R. Orito, J. F. Ormes, K. Sakai, M. Sasaki, E. S. Seo, Y. Shikaze, R. Shinoda, R. E. Streitmatter, J. Suzuki, Y. Takasugi, K. Takeuchi, K. Tanaka, N. Thakur, T. Yamagami, A. Yamamoto, T. Yoshida, K. Yoshimura

    Proceedings of Science   2017

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    DOI： 10.22323/1.301.0210

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  • Measurement of the cosmic-ray antiproton spectrum in the range 0.12 to 0.4 GeV with BESS-Polar II

    K. Sakai, J. K. Abe, H. Fuke, S. Haino, T. Hams, M. Hasegawa, K. C. Kim, M. H. Lee, Y. Makida, J. W. Mitchell, J. Nishimura, M. Nozaki, R. Orito, J. F. Ormes, N. Picot-Clemente, M. Sasaki, E. S. Seo, R. E. Streitmatter, J. Suzuki, K. Tanaka, N. Thakur, A. Yamamoto, T. Yoshida, K. Yoshimura

    Proceedings of Science   2017

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    DOI： 10.22323/1.301.0174

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  • Vibrational two-photon emission from coherently excited solid parahydrogen

    Yuki Miyamoto, Hideaki Hara, Takahiko Masuda, Noboru Sasao, Satoshi Uetake, Akihiro Yoshimi, Koji Yoshimura, Motohiko Yoshimura

    JOURNAL OF PHYSICAL CHEMISTRY A   121 ( 20 )   3943 - 3951   2016.12

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    DOI： 10.1021/acs.jpca.7b02011

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    Other Link： http://arxiv.org/pdf/1612.05600v1

  • MEASUREMENTS OF COSMIC-RAY PROTON AND HELIUM SPECTRA FROM THE BESS-POLAR LONG-DURATION BALLOON FLIGHTS OVER ANTARCTICA

    K. Abe, H. Fuke, S. Haino, T. Hams, M. Hasegawa, A. Horikoshi, A. Itazaki, K. C. Kim, T. Kumazawa, A. Kusumoto, M. H. Lee, Y. Makida, S. Matsuda, Y. Matsukawa, K. Matsumoto, J. W. Mitchell, Z. Myers, J. Nishimura, M. Nozaki, R. Orito, J. F. Ormes, N. Picot-Clemente, K. Sakai, M. Sasaki, E. S. Seo, Y. Shikaze, R. Shinoda, E. Streitmatter, J. Suzuki, Y. Takasugi, K. Takeuchi, K. Tanaka, N. Thakur, T. Yamagami, A. Yamamoto, T. Yoshida, K. Yoshimura

    ASTROPHYSICAL JOURNAL   822 ( 2 )   2016.5

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    DOI： 10.3847/0004-637X/822/2/65

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  • Review of the theoretical and experimental status of dark matter identification with cosmic-ray antideuterons

    T. Aramaki, S. Boggs, S. Bufalino, L. Dal, P. von Doetinchem, F. Donato, N. Fornengo, H. Fuke, M. Grefe, C. Hailey, B. Hamilton, A. Ibarra, J. Mitchell, I. Mognet, R. A. Ong, R. Pereira, K. Perez, A. Putze, A. Raklev, P. Salati, M. Sasaki, G. Tarle, A. Urbano, A. Vittino, S. Wild, W. Xue, K. Yoshimura

    PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS   618   1 - 37   2016.3

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  • Simultaneous Measurements of Superradiance at Multiple Wavelength from Helium Excited States: II. Analysis

    Chiaki Ohae, James R. Harries, Hiroshi Iwayama, Kentarou Kawaguchi, Susumu Kuma, Yuki Miyamoto, Mitsuru Nagasono, Kyo Nakajima, Itsuo Nakano, Eiji Shigemasa, Noboru Sasao, Satoshi Uetake, Tomonari Wakabayashi, Akihiro Yoshimi, Koji Yoshimura, Motohiko Yoshimura

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   85 ( 3 )   2016.3

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    DOI： 10.7566/JPSJ.85.034301

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  • Towards a measurement of the nuclear clock transition in Th-229

    Simon Stellmer, Matthias Schreal, Georgy Kazakov, Koji Yoshimura, Thorsten Schumm

    8TH SYMPOSIUM ON FREQUENCY STANDARDS AND METROLOGY 2015   723   2016

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    DOI： 10.1088/1742-6596/723/1/012059

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  • Recent progress of SPAN towards neutrino mass spectroscopy

    T. Masuda, H. Hara, Y. Miyamoto, N. Sasao, M. Tanaka, S. Uetake, A. Yoshimi, K. Yoshimura, M. Yoshimura

    XIV INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS (TAUP 2015), PTS 1-7   718   2016

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    DOI： 10.1088/1742-6596/718/6/062043

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  • Observation of vibrational coherent two-photon emission in solid parahydrogen

    Miyamoto Yuki, Hara Hideaki, Masuda Takahiko, Uetake Satoshi, Sasao Noboru, Yoshimi Akihiro, Yoshimura Koji, Yoshimura Motohiko

    Meeting Abstracts of the Physical Society of Japan   71   577 - 577   2016

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    DOI： 10.11316/jpsgaiyo.71.2.0_577

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  • Progress of the search of the ultra-low-energy isomer level of Thorium-229

    Okubo Sho, Okai Koichi, Iwasaki Tatsuro, Hara Hideaki, Miyamoto Yuki, Masuda Takahiko, Uetake Satoshi, Yoshimi Akihiro, Sasao Noboru, Yoshimura Motohiko, Yoshimura Koji, Yamaguchi Atsushi, Seto Makoto, Kitao Shinji, Kobayashi Yasuhiro, Masuda Ryo, Yoda Yoshitaka, Kasamatu Yoshitaka, Shigekawa Yudai, Yasuda Yuki, Konashi Kenji, Watanabe Makoto, Stellmer Simon, Schumm Thorsten

    Meeting Abstracts of the Physical Society of Japan   71   181 - 181   2016

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    DOI： 10.11316/jpsgaiyo.71.2.0_181

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  • Rate amplification of the two photon emission from para-hydrogen toward the neutrino mass measurement

    Takahiko Masuda, Hideaki Hara, Yuki Miyamoto, Susumu Kuma, Itsuo Nakano, Chiaki Ohae, Noboru Sasao, Minoru Tanaka, Satoshi Uetake, Akihiro Yoshimi, Koji Yoshimura, Motohiko Yoshimura

    HYPERFINE INTERACTIONS   236 ( 1-3 )   73 - 77   2015.11

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    DOI： 10.1007/s10751-015-1177-1

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  • A 64ch readout module for PPD/MPPC/SiPM using EASIROC ASIC

    Isamu Nakamura, N. Ishijima, K. Hanagaki, K. Yoshimura, Y. Nakai, K. Ueno

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   787   376 - 379   2015.7

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    DOI： 10.1016/j.nima.2015.01.098

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  • Externally triggered coherent two-photon emission from hydrogen molecules

    Yuki Miyamoto, Hideaki Hara, Takahiko Masuda, Noboru Sasao, Minoru Tanaka, Satoshi Uetake, Akihiro Yoshimi, Koji Yoshimura, Motohiko Yoshimura

    PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS   2015 ( 8 )   2015.5

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    DOI： 10.1093/ptep/ptv103

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  • 22pAG-7 Coherent two-photon emission from the vibrational excited states of hydrogen molecules III

    Uetake Satoshi, Hara Hideaki, Masuda Takahiko, Miyamoto Yuki, Nakano Itsuo, Sasao Noboru, Tanaka Minoru, Yoshimi Akihiro, Yoshimura Koji, Yoshimura Motohiko

    Meeting Abstracts of the Physical Society of Japan   70   668 - 668   2015

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    DOI： 10.11316/jpsgaiyo.70.1.0_668

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  • 22aDF-11 Detailed study on the macro-coherent amplification mechanism for the SPAN (SPectroscopy with Atomic Neutrino) experiment II

    Hara Hideaki, Masuda Takahiko, Miyamoto Yuki, Nakano Itsuo, Sasao Noboru, Tanaka Minoru, Uetake Satoshi, Yoshimi Akihiro, Yoshimura Koji, Yoshimura Motohiko

    Meeting Abstracts of the Physical Society of Japan   70   86 - 86   2015

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    DOI： 10.11316/jpsgaiyo.70.1.0_86

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  • BESS-polar measurements of the cosmic-ray proton and helium spectra

    K. Sakai, K. Abe, H. Fuke, S. Haino, T. Hams, M. Hasegawa, A. Horikoshi, A. Itazaki, K. C. Kim, T. Kumazawa, A. Kusumoto, M. H. Lee, Y. Makida, S. Matsuda, Y. Matsukawa, K. Matsumoto, J. W. Mitchell, Z. Myers, J. Nishimura, M. Nozaki, R. Orito, J. F. Ormes, N. Picot-Clemente, M. Sasaki, E. S. Seo, Y. Shikaze, R. Shinoda, R. E. Streitmatter, J. Suzuki, Y. Takasugi, K. Takeuchi, K. Tanaka, N. Thakur, T. Yamagami, A. Yamamoto, T. Yoshida, K. Yoshimura

    Proceedings of Science   30-   2015

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  • Measurements of galactic cosmic-ray hydrogen and helium isotopes with the BESS-polar II instrument

    Nicolas Picot-Clémente, K. Abe, H. Fuke, S. Haino, T. Hams, M. Hasegawa, A. Horikoshi, A. Itazaki, K. C. Kim, T. Kumazawa, A. Kusumoto, M. H. Lee, Y. Makida, S. Matsuda, Y. Matsukawa, K. Matsumoto, J. W. Mitchell, A. A. Moiseev, J. Nishimura, M. Nozaki, R. Orito, J. F. Ormes, K. Sakai, M. Sasaki, E. S. Seo, Y. Shikaze, R. Shinoda, R. E. Streitmatter, J. Suzuki, Y. Takasugi, K. Takeuchi, K. Tanaka, N. Thakur, T. Yamagami, A. Yamamoto, T. Yoshida, K. Yoshimura

    Proceedings of Science   30-   2015

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  • Status of cosmic-ray antideuteron searches

    P. Von Doetinchem, R. Pereira, T. Aramaki, C. J. Hailey, S. Boggs, S. Bufalino, L. Dal, A. Raklev, F. Donato, N. Fornengo, A. Vittino, H. Fuke, M. Grefe, B. Hamilton, A. Ibarra, S. Wild, J. Mitchell, M. Sasaki, S. I. Mognet, R. A. Ong, K. Perez, A. Putze, P. Salati, G. Tarle, A. Urbano, W. Xue, K. Yoshimura

    Proceedings of Science   30-   2015

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  • Parity violating radiative emission of neutrino pairs in heavy alkaline earth atoms of even isotopes Reviewed

    Yoshimura M, Sasao N, Uetake S

    PHYSICAL REVIEW D   90 ( 1 )   2014.7

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  • Observation of coherent two-photon emission from the first vibrationally-excited state of hydrogen molecules

    Yuki Miyamoto, Hideaki Hara, Susumu Kuma, Takahiko Masuda, Masayuki Katsuragawa, Itsuo Nakano, Chiaki Ohae, Noboru Sasao, Minoru Tanaka, Satoshi Uetake, Akihiro Yoshimi, Koji Yoshimura, Motohiko Yoshimura

    PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS   2014 ( 11 )   2014.6

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    DOI： 10.1093/ptep/ptu152

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  • Time variations of cosmic-ray helium isotopes with BESS-Polar I

    K. Abe, H. Fuke, S. Haino, T. Hams, M. Hasegawa, A. Horikoshi, A. Itazaki, K. C. Kim, T. Kumazawa, A. Kusumoto, M. H. Lee, Y. Makida, S. Matsuda, Y. Matsukawa, K. Matsumoto, J. W. Mitchell, A. A. Moiseev, J. Nishimura, M. Nozaki, R. Orito, J. F. Ormes, N. Picot-Clemente, K. Sakai, M. Sasaki, E. S. Seo, Y. Shikaze, R. Shinoda, R. E. Streitmatter, J. Suzuki, Y. Takasugi, K. Takeuchi, K. Tanaka, N. Thakur, T. Yamagami, A. Yamamoto, T. Yoshida, K. Yoshimura

    ADVANCES IN SPACE RESEARCH   53 ( 10 )   1426 - 1431   2014.5

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    DOI： 10.1016/j.asr.2013.09.028

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  • Production of Ba Metastable State via Superradiance

    Chiaki Ohae, Atsushi Fukumi, Susumu Kuma, Yuki Miyamoto, Kyo Nakajima, Itsuo Nakano, Hajime Nanjo, Noboru Sasao, Satoshi Uetake, Tomonari Wakabayashi, Akihiro Yoshimi, Koji Yoshimura, Motohiko Yoshimura

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   83 ( 4 )   2014.4

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    DOI： 10.7566/JPSJ.83.044301

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  • Study of PPDs with multi-wavelength laser microscope system

    KOJI YOSHIMURA, Isamu NAKAMURA

    Proceedings of International Workshop on New Photon-detectors — PoS(PhotoDet 2012)   2013.5

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    DOI： 10.22323/1.158.0007

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  • Cosmic ray H-2/H-1 ratio measured from BESS in 2000 during solar maximum

    K. C. Kim, K. Abe, H. Fuke, T. Hams, M. H. Lee, Y. Makida, S. Matsuda, J. W. Mitchell, J. Nishimura, J. F. Ormes, M. Sasaki, E. S. Seo, Y. Shikaze, R. E. Streitmatter, J. Suzuki, K. Tanaka, T. Yamagami, A. Yamamoto, T. Yoshida, K. Yoshimura

    ADVANCES IN SPACE RESEARCH   51 ( 2 )   234 - 237   2013.1

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    DOI： 10.1016/j.asr.2012.01.015

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  • Search for cosmic-ray antiproton origins and for cosmological antimatter with BESS

    A. Yamamoto, J. W. Mitchell, K. Yoshimura, K. Abe, H. Fuke, S. Haino, T. Hams, M. Hasegawa, A. Horikoshi, A. Itazaki, K. C. Kim, T. Kumazawa, A. Kusumoto, M. H. Lee, Y. Makida, S. Matsuda, Y. Matsukawa, K. Matsumoto, A. A. Moiseev, Z. Myers, J. Nishimura, M. Nozaki, R. Orito, J. F. Ormes, K. Sakai, M. Sasaki, E. S. Seo, Y. Shikaze, R. Shinoda, R. E. Streitmatter, J. Suzuki, Y. Takasugi, K. Takeuchi, K. Tanaka, T. Taniguchi, N. Thakur, T. Yamagami, T. Yoshida

    ADVANCES IN SPACE RESEARCH   51 ( 2 )   227 - 233   2013.1

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    DOI： 10.1016/j.asr.2011.07.012

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  • Short-term variations in cosmic ray proton fluxes from BESS-polar I

    N. Thakur, FOR THE BESS-POLAR COLLABORATION., K. Abe, H. Fuke, S. Haino, T. Hams, A. Itazaki, K. C. Kim, T. Kumazawa, M. H. Lee, Y. Makida, S. Matsuda, K. Matsumoto, J. W. Mitchell, Z. Myers, J. Nishimura, M. Nozaki, R. Orito, J. F. Ormes, M. Sasaki, E. S. Seo, Y. Shikaze, R. E. Streitmatter, J. Suzuki, Y. Takasugi, K. Takeuchi, K. Tanaka, T. Yamagami, A. Yamamoto, T. Yoshida, K. Yoshimura

    Proceedings of the 33rd International Cosmic Rays Conference, ICRC 2013   2013-   2013

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  • Development of a tracking detector system with multichannel scintillation fibers and PPD

    R. Honda, S. Callier, S. Hasegawa, M. Ieiri, Y. Matsumoto, K. Miwa, I. Nakamura, L. Raux, C. De La Taille, M. Tanaka, T. Uchida, K. Yoshimura

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   695   206 - 209   2012.12

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    DOI： 10.1016/j.nima.2011.10.005

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  • Multi-wavelength study of PPDs using an OPO tunable pulse laser microscope system

    Koji Yoshimura, Isamu Nakamura

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   695   197 - 201   2012.12

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    DOI： 10.1016/j.nima.2011.11.053

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  • The MICE Muon Beam on ISIS and the beam-line instrumentation of the Muon Ionization Cooling Experiment

    M. Bogomilov, Y. Karadzhov, D. Kolev, I. Russinov, R. Tsenov, G. Vankova-Kirilova, L. Wang, F. Y. Xu, S. X. Zheng, R. Bertoni, M. Bonesini, F. Ferri, G. Lucchini, R. Mazza, F. Paleari, F. Strati, V. Palladino, G. Cecchet, A. de Bari, M. Capponi, A. Cirillo, A. Iaciofano, A. Manfredini, M. Parisi, D. Orestano, F. Pastore, A. Tonazzo, L. Tortora, Y. Mori, Y. Kuno, H. Sakamoto, A. Sato, T. Yano, M. Yoshida, S. Ishimoto, S. Suzuki, K. Yoshimura, F. Filthaut, R. Garoby, S. Gilardoni, P. Gruber, K. Hanke, H. Haseroth, P. Janot, A. Lombardi, S. Ramberger, M. Vretenar, P. Bene, A. Blondel, F. Cadoux, J. -S. Graulich, V. Grichine, E. Gschwendtner, F. Masciocchi, R. Sandstrom, V. Verguilov, H. Wisting, C. Petitjean, R. Seviour, J. Alexander, G. Charnley, N. Collomb, S. Griffiths, B. Martlew, A. Moss, I. Mullacrane, A. Oates, P. Owens, C. White, S. York, D. Adams, R. Apsimon, P. Barclay, D. E. Baynham, T. W. Bradshaw, M. Courthold, P. Drumm, R. Edgecock, T. Hayler, M. Hills, Y. Ivaniouchenkov, A. Jones, A. Lintern, C. MacWaters, C. Nelson, A. Nichols, R. Preece, S. Ricciardi, J. H. Rochford, C. Rogers, W. Spensley, J. Tarrant, K. Tilley, S. Watson, A. Wilson, D. Forrest, F. J. P. Soler, K. Walaron, P. Cooke, R. Gamet, A. Alekou, M. Apollonio, G. Barber, R. Beuselinck, D. Clark, I. Clark, D. Colling, A. Dobbs, P. Dornan, S. Fayer, A. Fish, R. Hare, S. Greenwood, A. Jamdagni, V. Kasey, M. Khaleeq, J. Leaver, K. Long, E. McKigney, T. Matsushita, J. Pasternak, T. Sashalmi, T. Savidge, M. Takahashi, V. Blackmore, T. Carlisle, J. H. Cobb, W. Lau, M. Rayner, C. D. Tunnell, H. Witte, S. Yang, C. N. Booth, P. Hodgson, L. Howlett, R. Nicholson, E. Overton, M. Robinson, P. Smith, D. Adey, J. Back, S. Boyd, P. Harrison, M. Ellis, P. Kyberd, M. Littlefield, J. J. Nebrensky, A. D. Bross, S. Geer, D. Neuffer, A. Moretti, M. Popovic, M. A. C. Cummings, T. J. Roberts, A. DeMello, M. A. Green, D. Li, S. Virostek, M. S. Zisman, B. Freemire, P. Hanlet, D. Huang, G. Kafka, D. M. Kaplan, P. Snopok, Y. Torun, S. Blot, Y. K. Kim, U. Bravar, Y. Onel, D. Cline, Y. Fukui, K. Lee, X. Yang, R. A. Rimmer, L. M. Cremaldi, G. Gregoire, T. L. Hart, D. A. Sanders, D. J. Summers, L. Coney, R. Fletcher, G. G. Hanson, C. Heidt, J. Gallardo, S. Kahn, H. Kirk, R. B. Palmer

    JOURNAL OF INSTRUMENTATION   7   2012.5

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    DOI： 10.1088/1748-0221/7/05/P05009

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  • Search for Antihelium with the BESS-Polar Spectrometer

    K. Abe, H. Fuke, S. Haino, T. Hams, M. Hasegawa, A. Horikoshi, A. Itazaki, K. C. Kim, T. Kumazawa, A. Kusumoto, M. H. Lee, Y. Makida, S. Matsuda, Y. Matsukawa, K. Matsumoto, J. W. Mitchell, Z. Myers, J. Nishimura, M. Nozaki, R. Orito, J. F. Ormes, K. Sakai, M. Sasaki, E. S. Seo, Y. Shikaze, R. Shinoda, R. E. Streitmatter, J. Suzuki, Y. Takasugi, K. Takeuchi, K. Tanaka, N. Thakur, T. Yamagami, A. Yamamoto, T. Yoshida, K. Yoshimura

    PHYSICAL REVIEW LETTERS   108 ( 13 )   2012.3

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    DOI： 10.1103/PhysRevLett.108.131301

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  • Measurement of the Cosmic-Ray Antiproton Spectrum at Solar Minimum with a Long-Duration Balloon Flight over Antarctica

    K. Abe, H. Fuke, S. Haino, T. Hams, M. Hasegawa, A. Horikoshi, K. C. Kim, A. Kusumoto, M. H. Lee, Y. Makida, S. Matsuda, Y. Matsukawa, J. W. Mitchell, J. Nishimura, M. Nozaki, R. Orito, J. F. Ormes, K. Sakai, M. Sasaki, E. S. Seo, R. Shinoda, R. E. Streitmatter, J. Suzuki, K. Tanaka, N. Thakur, T. Yamagami, A. Yamamoto, T. Yoshida, K. Yoshimura

    PHYSICAL REVIEW LETTERS   108 ( 5 )   2012.1

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    DOI： 10.1103/PhysRevLett.108.051102

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  • 24aGC-11 Development of test electronics for multi-MPPC readout with EASIROC chip

    Honda R., Miwa K., Ikeno M., Uchida T., Tanaka M., Nakamura I., Yoshimura K.

    Meeting Abstracts of the Physical Society of Japan   67.1.1   74   2012

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    DOI： 10.11316/jpsgaiyo.67.1.1.0_74_3

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  • Neutrino spectroscopy with atoms and molecules Reviewed

    Fukumi, A., Kuma, S., Miyamoto, Y., Nakajima, K., Nakano, I., Nanjo, H., Ohae, C., Sasao, N., Tanaka, M., Taniguchi, T., Uetake, S., Wakabayashi, T., Yamaguchi, T., Yoshimi, A., Yoshimura, M.

    Progress of Theoretical and Experimental Physics   2012 ( 1 )   2012

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    DOI： 10.1093/ptep/pts066

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  • The design, construction and performance of the MICE scintillating fibre trackers

    M. Ellis, P. R. Hobson, P. Kyberd, J. J. Nebrensky, A. Bross, J. Fagan, T. Fitzpatrick, R. Flores, R. Kubinski, J. Krider, R. Rucinski, P. Rubinov, C. Tolian, T. L. Hart, D. M. Kaplan, W. Luebke, B. Freemire, M. Wojcik, G. Barber, D. Clark, I. Clark, P. J. Dornan, A. Fish, S. Greenwood, R. Hare, A. Jamdagni, V. Kasey, M. Khaleeq, J. Leaver, K. R. Long, E. McKigney, T. Matsushita, C. Rogers, T. Sashalmi, P. Savage, M. Takahashi, A. Tapper, K. Yoshimura, P. Cooke, R. Gamet, H. Sakamoto, Y. Kuno, A. Sato, T. Yano, M. Yoshida, C. MacWaters, L. Coney, G. Hanson, A. Klier, D. Cline, X. Yang, D. Adey

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   659 ( 1 )   136 - 153   2011.12

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    DOI： 10.1016/j.nima.2011.04.041

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  • BESS-polar: Search for antihelium Reviewed

    M. Sasaki, K. Abe, H. Fuke, S. Haino, T. Hams, M. Hasegawa, A. Horikoshi, A. Itazaki, K. C. Kim, T. Kumazawa, A. Kusumoto, M. H. Lee, Y. Makida, S. Matsuda, Y. Matsukawa, K. Matsumoto, J. W. Mitchell, Z. Myers, J. Nishimura, M. Nozaki, R. Orito, J. F. Ormes, K. Sakai, E. S. Seo, Y. Shikaze, R. Shinoda, R. E. Streitmatter, J. Suzuki, Y. Takasugi, K. Takeuchi, K. Tanaka, N. Thakur, T. Yamagami, A. Yamamoto, T. Yoshida, K. Yoshimura

    Proceedings of the 32nd International Cosmic Ray Conference, ICRC 2011   5   123 - 126   2011

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    DOI： 10.7529/ICRC2011/V05/1230

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  • Transient variations in cosmic ray proton fluxes from BESS-Polar I Reviewed

    N. Thakur, K. Abe, H. Fuke, S. Haino, T. Hams, A. Itazaki, K. C. Kim, T. Kumazawa, M. H. Lee, Y. Makida, S. Matsuda, K. Matsumoto, J. W. Mitchell, Z. Myers, J. Nishimura, M. Nozaki, R. Orito, J. F. Ormes, M. Sasaki, E. S. Seo, Y. Shikaze, R. E. Streitmatter, J. Suzuki, Y. Takasugi, K. Takeuchi, K. Tanaka, T. Yamagami, A. Yamamoto, T. Yoshida, K. Yoshimura

    Proceedings of the 32nd International Cosmic Ray Conference, ICRC 2011   11   220 - 223   2011

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    DOI： 10.7529/ICRC2011/V02/1247

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  • Search for cosmic-ray antideuterons with BESS-Polar Reviewed

    K. Yoshimura, K. Abe, H. Fuke, S. Haino, T. Hams, M. Hasegawa, A. Horikoshi, K. C. Kim, A. Kusumoto, M. H. Lee, Y. Makida, S. Matsuda, Y. Matsukawa, J. W. Mitchell, J. Nishimura, M. Nozaki, R. Orito, J. F. Ormes, K. Sakai, M. Sasaki, E. S. Seo, R. Shinoda, R. E. Streitmatter, J. Suzuki, K. Tanaka, N. Thakur, T. Yamagami, A. Yamamoto, T. Yoshida

    Proceedings of the 32nd International Cosmic Ray Conference, ICRC 2011   5   195 - 198   2011

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    DOI： 10.7529/ICRC2011/V05/1259

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  • Cosmic ray helium isotopes from the BESS-Polar I experiment Reviewed

    N. Picot-Clemente, K. Abe, H. Fuke, S. Haino, T. Hams, A. Itazaki, K. C. Kim, T. Kumazawa, M. H. Lee, Y. Makida, S. Matsuda, K. Matsumoto, J. W. Mitchell, Z. Myers, J. Nishimura, M. Nozaki, R. Orito, J. F. Ormes, M. Sasaki, E. S. Seo, Y. Shikaze, R. E. Streitmatter, J. Suzuki, Y. Takasugi, K. Takeuchi, K. Tanaka, T. Yamagami, A. Yamamoto, T. Yoshida, K. Yoshimura

    Proceedings of the 32nd International Cosmic Ray Conference, ICRC 2011   6   51 - 54   2011

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    DOI： 10.7529/ICRC2011/V06/0699

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  • Measurement of cosmic-ray antiproton spectrum at solar minimum with a long-duration balloon flight in Antarctica Reviewed

    K. Sakai, K. Abe, H. Fuke, S. Haino, T. Hams, M. Hasegawa, A. Horikoshi, K. C. Kim, A. Kusumoto, M. H. Lee, Y. Makida, S. Matsuda, Y. Matsukawa, J. W. Mitchell, J. Nishimura, M. Nozaki, R. Orito, J. F. Ormes, M. Sasaki, E. S. Seo, R. Shinoda, R. E. Streitmatter, J. Suzuki, K. Tanaka, N. Thakur, T. Yamagami, A. Yamamoto, T. Yoshida, K. Yoshimura

    Proceedings of the 32nd International Cosmic Ray Conference, ICRC 2011   6   111 - 114   2011

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    DOI： 10.7529/ICRC2011/V06/1280

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  • MICE: The muon ionization cooling experiment step I: First measurement of emittance with particle physics detectors

    U. Bravar, M. Bogomilov, Y. Karadzhov, D. Kolev, I. Russinov, R. Tsenov, L. Wang, F. Y. Xu, S. X. Zheng, R. Bertoni, M. Bonesini, R. Mazza, V. Palladino, G. Cecchet, A. de Bari, M. Capponi, A. Iaciofano, D. Orestano, F. Pastore, L. Tortora, S. Ishimoto, S. Suzuki, K. Yoshimura, Y. Mori, Y. Kuno, H. Sakamoto, A. Sato, T. Yano, M. Yoshida, F. Filthaut, M. Vretenar, S. Ramberger, A. Blondel, F. Cadoux, F. Masciocchi, J. S. Graulich, V. Verguilov, H. Wisting, C. Petitjean, R. Seviour, M. Ellis, P. Kyberd, M. Littlefield, J. J. Nebrensky, D. Forrest, F. J.P. Soler, K. Walaron, P. Cooke, R. Gamet, A. Alecou, M. Apollonio, G. Barber, A. Dobbs, P. Dornan, A. Fish, R. Hare, A. Jamdagni, V. Kasey, M. Khaleeq, K. Long, J. Pasternak, H. Sakamoto, T. Sashalmi, V. Blackmore, J. Cobb, W. Lau, M. Rayner, C. D. Tunnell, H. Witte, S. Yang, J. Alexander, G. Charnley, S. Griffiths, B. Martlew, A. Moss, I. Mullacrane, A. Oats, S. York, R. Apsimon, R. J. Alexander, P. Barclay, D. E. Baynham, T. W. Bradshaw, M. Courthold, R. Edgecock, T. Hayler, M. Hills, T. Jones, N. McCubbin, W. J. Murray, C. Nelson, A. Nicholls, P. R. Norton, C. Prior, J. H. Rochford, C. Rogers, W. Spensley, K. Tilley, C. N. Booth, P. Hodgson

    Proceedings of the 2011 Meeting of the Division of Particles and Fields of the American Physical Society, DPF 2011   2011

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  • 27pGN-9 Development of a readout electronics for multi-channel MPPC with SPIROC

    Honda Ryotaro, Miwa Koji, Ieiri Masaharu, Saito Masatoshi, Nakamura Isamu, Yoshimura Koji, Ikeno Masahiro, Uchida Tomohisa, Tanaka Manobu

    Meeting Abstracts of the Physical Society of Japan   66.1.1   28   2011

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    DOI： 10.11316/jpsgaiyo.66.1.1.0_28_4

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  • New measurements of proton beam extinction at J-parc Reviewed

    Yoshimura K, Hashimoto Y, Hori Y, Sato Y, Shimamoto M, Takeda Y, Uota M, Igarashi Y, Nishiguchi H, Mihara S, Aoki M, Nakai H, Hikida S

    IPAC 2011 - 2nd International Particle Accelerator Conference   1242 - 1244   2011

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  • Search for Novel Origins of Cosmic-ray Antiprotons and Antimatter with BESS-Polar Flight over Antarctica.

    Koji Yoshimura, S. Haino, M. Hasegawa, A. Horikoshi, T. Kumazawa, Y. Makida, S. Matsuda, K. Matsumoto, M. Nozaki, J. Suzuki, K. Tanaka, A. Yamamoto, T. Hams, J. W. Mitchell, A. A. Moiseev, R. E. Streitmatter, M. Sasaki, K. Abe, Itazaki, Y. Matsukawa, Y. Shikaze, R. Orito, Y. Takasugi, K. Takeuchi, H. Fuke, T. Yamagami, T. Yoshida, K. C. Kim, M. H. Lee, Z. Myers, E. S. Seo, J. Nishimura, K. Sakai, R. Shinoda, J. F. Ormes, N. Thakur

    35TH INTERNATIONAL CONFERENCE OF HIGH ENERGY PHYSICS (ICHEP 2010)   2010

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  • Measurements of proton beam extinction at J-PARC Reviewed

    Yoshimura K, Hashimoto Y, Hori Y, Sato Y, Shimamoto M, Takeda Y, Uota M, Igarashi Y, Nishiguchi H, Mihara S, Aoki M, Nakadozono N, Tachimoto T

    IPAC 2010 - 1st International Particle Accelerator Conference   984 - 986   2010

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  • Accelerator design concept for future neutrino facilities

    M. Apollonio, J. S. Berg, A. Blondel, A. Bogacz, S. Brooks, J. -E. Campagne, D. Caspar, C. Cavata, P. Chimenti, J. Cobb, M. Dracos, R. Edgecock, I. Efthymiopoulos, A. Fabich, R. Fernow, F. Filthaut, J. Gallardo, R. Garoby, S. Geer, F. Gerigk, G. Hanson, R. Johnson, C. Johnstone, D. Kaplan, E. Keil, H. Kirk, A. Klier, A. Kurup, J. Lettry, K. Long, S. Machida, K. McDonald, F. Meot, Y. Mori, D. Neuffer, V. Palladino, R. Palmer, K. Paul, A. Poklonskiy, M. Popovic, C. Prior, G. Rees, C. Rossi, T. Rovelli, R. Sandstroem, R. Sevior, P. Sievers, N. Simos, Y. Torun, M. Vretenar, K. Yoshimura, M. S. Zisman

    JOURNAL OF INSTRUMENTATION   4   2009.7

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    DOI： 10.1088/1748-0221/4/07/P07001

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  • The BESS-Polar Ultra-Thin Superconducting Solenoid Magnet and Its Operational Characteristics During Long-Duration Scientific Ballooning Over Antarctica

    Yasuhiro Makida, Akira Yamamoto, Koji Yoshimura, Ken-ichi Tanaka, Jun'ichi Suzuki, Shinya Matsuda, Masata Hasegawa, Atsushi Horikoshi, Ryoko Shinoda, Kenichi Sakai, Shoichi Mizumaki, Reiko Orito, Yousuke Matsukawa, Akira Kusumoto, John W. Mitchell, Robert E. Streitmatter, Thomas Hams, Makoto Sasaki, Neeharika Thakur

    IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY   19 ( 3 )   1315 - 1319   2009.6

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    DOI： 10.1109/TASC.2009.2017946

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  • BEss-polar experiment -progress and future prospect- Reviewed

    K. Yoshimura, A. Yamamoto, K. Abe, H. Fuke, S. Haino, T. Hams, M. Hasegawa, A. Horikoshi, K. C. Kim, A. Kusumoto, M. H. Lee, Y. Makida, S. Matsuda, Y. Matsukawa, J. W. Mitchell, A. A. Moiseev, J. Nishimura, M. Nozaki, R. Orito, J. F. Ormes, K. Sakai, M. Sasaki, E. S. Seo, R. Shinoda, R. E. Streitmatter, J. Suzuki, K. Tanaka, N. Thakur, T. Yamagami, T. Yoshida

    Journal of the Physical Society of Japan   78   29 - 34   2009

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    DOI： 10.1143/JPSJS.78SA.29

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  • Measurements of cosmic-ray hydrogen and helium isotopes with BESS-polar I in 2004

    K. C. Kim, K. Abe, H. Fuke, S. Haino, T. Hams, A. Itazaki, T. Kumazawa, M. H. Lee, S. E. Lee, Y. Makida, S. Matsuda, K. Matsumoto, J. W. Mitchell, A. A. Moiseev, Z. Myers, J. Nishimura, M. Nozaki, R. Orito, J. F. Ormes, M. Sasaki, E. S. Seo, Y. Shikaze, R. E. Streitmatter, J. Suzuki, Y. Takasugi, K. Takeuchi, K. Tanaka, T. Yamagami, A. Yamamoto, T. Yoshida, K. Yoshimura

    31st International Cosmic Ray Conference, ICRC 2009   2009

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  • The electronics and data acquisition systems for the BESS-polar program

    M. Sasaki, K. Abe, H. Fuke, P. A. Goodwin, S. Haino, T. Hams, M. Hasegawa, A. Horikoshi, N. Ikeda, A. Itazaki, T. Kumazawa, A. Kusumoto, S. Matsuda, Y. Matsukawa, J. W. Mitchell, M. Nozaki, R. Orito, L. F. Ryan, K. Sakai, R. Shinoda, S. Singh, R. E. Streitmatter, Y. Takasugi, K. Takeuchi, T. Taniguchi, K. Tanizaki, N. Thakur, K. Yamato, T. Yoshida, K. Yoshimura

    31st International Cosmic Ray Conference, ICRC 2009   2009

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  • Measurement of the cosmic-ray low-energy antiproton spectrum with the first BESS-Polar Antarctic flight

    K. Abe, H. Fuke, S. Haino, T. Hams, A. Itazaki, K. C. Kim, T. Kumazawa, M. H. Lee, Y. Makida, S. Matsuda, K. Matsumoto, J. W. Mitchell, A. A. Moiseev, Z. Myers, J. Nishimura, M. Nozaki, R. Orito, J. F. Ormes, M. Sasaki, E. S. Seo, Y. Shikaze, R. E. Streitmatter, J. Suzuki, Y. Takasugi, K. Takeuchi, K. Tanaka, T. Yamagami, A. Yamamoto, T. Yoshida, K. Yoshimura

    PHYSICS LETTERS B   670 ( 2 )   103 - 108   2008.12

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    DOI： 10.1016/j.physletb.2008.10.053

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  • BESS-Polar experiment: Progress and future prospects

    K. Yoshimura, K. Abe, H. Fuke, S. Haino, T. Hams, M. Hasegawa, A. Horikoshi, K. C. Kim, T. Kumazawa, A. Kusumoto, M. -H. Lee, Y. Makida, S. Matsuda, Y. Matsukawa, J. W. Mitchell, A. A. Moiseev, J. Nishimura, M. Nozaki, R. Orito, J. F. Ormes, K. Sakai, M. Sasaki, E. S. Seo, Y. Shikaze, R. Shinoda, R. E. Streitmatter, J. Suzuki, K. Takeuchi, N. Thakur, K. Tanaka, T. Yamagami, A. Yamamoto, T. Yoshida

    ADVANCES IN SPACE RESEARCH   42 ( 10 )   1664 - 1669   2008.11

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    DOI： 10.1016/j.asr.2007.05.048

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  • Search for antihelium: Progress with BESS

    M. Sasaki, S. Haino, K. Abe, H. Fuke, T. Hams, K. C. Kim, M. H. Lee, Y. Makida, S. Matsuda, J. W. Mitchell, A. A. Moiseev, J. Nishimura, M. Nozaki, S. Orito, J. F. Ormes, T. Sanuki, E. S. Seo, Y. Shikaze, R. E. Streitmatter, J. Suzuki, K. Tanaka, T. Yamagami, A. Yamamoto, T. Yoshida, K. Yoshimura

    ADVANCES IN SPACE RESEARCH   42 ( 3 )   450 - 454   2008.8

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    DOI： 10.1016/j.asr.2007.09.012

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  • Search for primordial antiparticles with BESS

    A. Yamamoto, K. Abe, H. Fuke, S. Haino, T. Hams, M. Hasegawa, A. Horikoshi, K. C. Kim, A. Kusumoto, M. H. Lee, Y. Makida, S. Matsuda, Y. Matsukawa, J. W. Mitchell, A. Moiseev, J. Nishimura, M. Nozaki, R. Orito, S. Orito, J. F. Ormes, K. Sakai, T. Sanuki, M. Sasaki, E. S. Seo, Y. Shikaze, R. Shinoda, R. E. Streitmatter, J. Suzuki, K. Tanaka, N. Thakur, T. Yamagami, T. Yoshida, K. Yoshimura

    ADVANCES IN SPACE RESEARCH   42 ( 3 )   442 - 449   2008.8

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    DOI： 10.1016/j.asr.2007.04.069

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  • Irradiation damage studies of high power accelerator materials

    N. Simos, H. G. Kirk, P. Thieberger, H. Ludewig, J. O. Conor, L. Mausner, P. -T. Trung, K. T. McDonald, K. Yoshimura, J. R. J. Bennett

    JOURNAL OF NUCLEAR MATERIALS   377 ( 1 )   41 - 51   2008.6

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    DOI： 10.1016/j.jnucmat.2008.02.074

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  • Search for fractionally charged particles in cosmic rays with the BESS spectrometer

    H. Fuke, Y. Tasaki, K. Abe, S. Haino, Y. Makida, S. Matsuda, J. W. Mitchell, A. A. Molseev, J. Nishimura, M. Nozaki, S. Orito, J. F. Ormes, M. Sasaki, E. S. Seo, Y. Shikaze, R. E. Streitmatter, J. Suzuki, K. Tanaka, T. Yamagami, A. Yamamoto, T. Yoshida, K. Yoshimura

    ADVANCES IN SPACE RESEARCH   41 ( 12 )   2050 - 2055   2008

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    DOI： 10.1016/j.asr.2007.02.042

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  • Development and study of the multi pixel photon counter

    S. Gomi, H. Hano, T. Iijima, S. Itoh, K. Kawagoe, S. H. Kim, T. Kubota, T. Maeda, T. Matsumura, Y. Mazuka, K. Miyabayashi, H. Miyata, T. Murakami, T. Nakadaira, T. Nakaya, H. Otono, E. Sano, T. Shinkawa, Y. Sudo, T. Takeshita, M. Taguchi, T. Tsubokawa, S. Uozumi, M. Yamaoka, H. Yamazaki, M. Yokoyama, K. Yoshimura, T. Yoshioka

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   581 ( 1-2 )   427 - 432   2007.10

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    DOI： 10.1016/j.nima.2007.08.020

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  • Measurements of 0.2-20 GeV/n cosmic-ray proton and helium spectra from 1997 through 2002 with the BESS spectrometer

    Y. Shikaze, S. Haino, K. Abe, H. Fuke, T. Hams, K. C. Kim, Y. Makida, S. Matsuda, J. W. Mitchell, A. A. Moiseev, J. Nishimura, M. Nozaki, S. Orito, J. F. Ormes, T. Sanuki, M. Sasaki, E. S. Seo, R. E. Streitmatter, J. Suzuki, K. Tanaka, T. Yamagami, A. Yamamoto, T. Yoshida, K. Yoshimura

    ASTROPARTICLE PHYSICS   28 ( 1 )   154 - 167   2007.9

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    DOI： 10.1016/j.astropartphys.2007.05.001

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  • The BESS program

    A. Yamamoto, K. Abe, H. Fuke, S. Haino, T. Hams, K. Kim, M. H. Lee, Y. Makida, S. Matsuda, J. W. Mitchell, A. Moiseev, J. Nishimura, M. Nozaki, R. Orito, S. Orito, J. F. Ormes, K. Sakai, T. Sanuki, M. Sasaki, E. S. Seo, Y. Shikaze, R. E. Streitmatter, J. Suzuki, K. Tanaka, N. Thakur, T. Yamagami, T. Yoshida, K. Yoshimura

    NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS   166   62 - 67   2007.4

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    DOI： 10.1016/j.nuclphysbps.2006.12.092

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  • Measurements of proton, helium and muon spectra at small atmospheric depths with the BESS spectrometer (vol 564, pg 8, 2003)

    K. Abe, T. Sanuki, K. Anraku, Y. Asaoka, H. Fuke, S. Haino, N. Ikeda, M. Imori, K. Izumi, T. Maeno, Y. Makida, S. Matsuda, N. Matsui, T. Matsukawa, H. Matsumoto, J. W. Mitchell, A. A. Moiseev, J. Nishimura, M. Nozaki, S. Orito, J. E. Ormes, M. Sasaki, E. S. Seo, Y. Shikaze, T. Sonoda, R. E. Streitmatter, J. Suzuki, K. Tanaka, K. Tanizaki, T. Yamagami, A. Yamamoto, Y. Yamamoto, K. Yamato, T. Yoshida, K. Yoshimura

    PHYSICS LETTERS B   645 ( 5-6 )   472 - 475   2007.2

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  • Solar Modulation of low-energy antiproton and proton spectra measured by BESS

    J. W. Mitchell, K. Abe, H. Fuke, S. Haino, T. Hams, M. Hasegawa, A. Horikoshi, K. C. Kim, M. H. Lee, Y. Makida, S. Matsuda, A. Moiseev, J. Nishimura, M. Nozaki, R. Orito, S. Orito, J. F. Ormes, K. Sakai, M. Sasaki, E. S. Seo, Y. Shikaze, R. E. Streitmatter, J. Suzuki, K. Tanaka, N. Thakur, T. Yamagami, A. Yamamoto, T. Yoshida, K. Yoshimura

    Proceedings of the 30th International Cosmic Ray Conference, ICRC 2007   1   455 - 458   2007

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  • Energy spectra of cosmic-ray hydrogen and helium isotopes during the 2000 solar maximum

    K. C. Kim, K. Abe, H. Fuke, S. Haino, T. Hams, Y. Makida, S. Matsuda, J. W. Mitchell, A. A. Moiseev, J. Nishimura, M. Nozaki, S. Orito, J. F. Ormes, T. Sanuki, M. Sasaki, E. S. Seo, Y. Shikaze, R. E. Streitmatter, J. Suzuki, K. Tanaka, T. Yamagami, A. Yamamoto, T. Yoshida, K. Yoshimura

    Proceedings of the 30th International Cosmic Ray Conference, ICRC 2007   2 ( 1 )   71 - 74   2007

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  • Results from BESS-polar i 2004 Antarctica flight

    T. Hams, K. Abe, H. Fuke, S. Haino, M. Hasegawa, A. Horikoshi, K. C. Kim, M. H. Lee, Y. Makida, S. Matsuda, J. W. Mitchell, A. A. Moiseev, J. Nishimura, M. Nozaki, R. Orito, J. F. Ormes, K. Sakai, M. Sasaki, E. S. Seo, R. E. Streitmatter, J. Suzuki, K. Tanaka, N. Thakur, T. Yamagami, A. Yamamoto, T. Yoshida, K. Yoshimura

    Proceedings of the 30th International Cosmic Ray Conference, ICRC 2007   2 ( 1 )   67 - 70   2007

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  • BESS-Polar II experiment

    K. Yoshimura, K. Abe, H. Fuke, S. Haino, T. Hams, M. Hasegawa, A. Horikoshi, K. C. Kim, A. Kusumoto, M. H. Lee, Y. Makida, S. Matsuda, Y. Matsukawa, J. W. Mitchell, A. A. Moiseev, J. Nishimura, M. Nozaki, R. Orito, J. F. Ormes, K. Sakai, M. Sasaki, E. S. Seo, R. Shinoda, R. E. Streitmatter, J. Suzuki, K. Tanaka, N. Thakur, T. Yamagami, A. Yamamoto, T. Yoshida

    Proceedings of the 30th International Cosmic Ray Conference, ICRC 2007   2 ( 1 )   91 - 94   2007

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  • Solid target studies for muon colliders and neutrino beams

    N Simos, H Kirk, H Ludewig, P Thieberger, WT Weng, PT Trung, K McDonald, J Sheppard, K Yoshimura, Y Hayato

    NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS   155   288 - 290   2006.5

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    DOI： 10.1016/j.nuclphysbps.2006.02.077

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  • Measurements of atmospheric antiprotons

    K Yamato, K Abe, H Fuke, S Haino, Y Makida, S Matsuda, H Matsumoto, JW Mitchell, AA Moiseev, J Nishimura, M Nozaki, S Orito, JF Ormes, T Sanuki, M Sasaki, ES Seo, Y Shikaze, RE Streitmatter, J Suzuki, K Tanaka, T Yamagami, A Yamamoto, T Yoshida, K Yoshimura

    PHYSICS LETTERS B   632 ( 4 )   475 - 479   2006.1

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    DOI： 10.1016/j.physletb.2005.11.042

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  • Development of multi-pixel photon counters

    S. Gomi, M. Taguchi, H. Hano, S. Itoh, T. Kubota, X. Maeda, Y. Mazuka, H. Otono, E. Sano, Y. Sudo, T. Tsubokawa, M. Yamaoka, H. Yamazaki, S. Uozumi, T. Yoshioka, T. Lijima, K. Kawagoe, S. H. Kim, T. Matsumura, K. Miyabayashi, T. Murakami, T. Nakadaira, T. Nakaya, T. Shinkawa, T. Takeshita, M. Yokoyama, K. Yoshimura

    IEEE Nuclear Science Symposium Conference Record   2   1105 - 1111   2006

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    DOI： 10.1109/NSSMIC.2006.356040

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  • R&D status of the high-intense monochromatic low-energy muon source : Prism

    A. Sato, M. Aoki, Y. Arimoto, T. Itahashi, Y. Kuno, Y. Kuriyama, T. Oki, T. Takayanagi, M. Yoshida, S. Machida, C. Ohmori, T. Yokoi, K. Yoshimura, M. Aiba, Y. Mori, Y. Iwashita

    EPAC 2006 - Contributions to the Proceedings   2508 - 2510   2006

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  • Material irradiation damage studies for high power accelerators

    N. Simos, H. Kirk, L. Trung, H. Ludewig, L. Mausner, J. O'Conor, K. Yoshimura, S. Makimura, K. McDonald

    EPAC 2006 - Contributions to the Proceedings   1816 - 1818   2006

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  • Target material irradiation studies for high-intensity accelerator beams

    N Simos, H Kirk, H Ludewig, P Thieberger, WT Weng, K McDonald, J Sheppard, G Evangelakis, K Yoshimura

    NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS   149   259 - 261   2005.12

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    DOI： 10.1016/j.nuclphysbps.2005.05.033

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  • Conducting pulsed target

    K Yoshimura, Y Yamanoi, P Sievers, B Autin

    NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS   149   265 - 267   2005.12

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    DOI： 10.1016/j.nuclphysbps.2005.05.035

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  • R&D works on high-power targetry for neutrino factories

    K Yoshimura

    JOURNAL OF NUCLEAR MATERIALS   343 ( 1-3 )   14 - 20   2005.8

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    DOI： 10.1016/j.jnucmat.2005.02.009

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  • Search for cosmic-ray antideuterons

    H Fuke, T Maeno, K Abe, S Haino, Y Makida, S Matsuda, H Matsumoto, JW Mitchell, AA Moiseev, J Nishimura, M Nozaki, S Orito, JF Ormes, M Sasaki, ES Seo, Y Shikaze, RE Streitmatter, J Suzuki, K Tanaka, K Tanizaki, T Yamagami, A Yamamoto, Y Yamamoto, K Yamato, T Yoshida, K Yoshimura

    PHYSICAL REVIEW LETTERS   95 ( 8 )   2005.8

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    DOI： 10.1103/PhysRevLett.95.081101

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  • Measurement of radiation heating induced by secondary particles from 12-GeV primary proton-beam interactions

    H Ohnishi, K Yoshimura, T Nakamoto, A Yamamoto, Y Ajima, M Aoki, N Fukasawa, K Ishibashi, Y Kuno, T Miura, K Nakahara, N Nosaka, M Numajiri, T Ogitsu, A Sato

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   545 ( 1-2 )   88 - 96   2005.6

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    DOI： 10.1016/j.nima.2005.03.001

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  • The 2004 BESS-Polar scientific flight in Antarctica

    T. Yoshida, J. W. Mitchell, A. Yamamoto, K. Abe, H. Fuke, S. Haino, T. Hams, K. C. Kim, T. Kumazawa, M. H. Lee, Y. Makida, S. Matsuda, H. Matsumoto, K. Matsumoto, A. A. Moiseev, Z. D. Myers, J. Nishimura, M. Nozaki, A. Ogata, M. Oikawa, J. F. Ormes, M. Sasaki, E. S. Seo, Y. Shikaze, R. E. Streitmatter, J. Suzuki, K. Takeuchi, K. Tanaka, T. Taniguchi, T. Yamagami, K. Yoshimura

    Proceedings of the 29th International Cosmic Ray Conference, Vol 3: OG1   33 - 36   2005

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  • Cosmic ray H-1 and H-2 spectra from BESS 98

    ZD Myers, ES Seo, JZ Wang, RW Alford, K Abe, K Anraku, Y Asaoka, M Fujikawa, M Imori, T Maeno, Y Makida, H Matsumoto, H Matsunaga, J Mitchell, T Mitsui, A Moiseev, M Motoki, J Nishimura, M Nozaki, S Orito, J Ormes, T Saeki, T Sanuki, M Sasaki, Y Shikaze, T Sonoda, R Streitmatter, J Suzuki, K Tanaka, Ueda, I, N Yajima, T Yamagami, A Yamamoto, T Yoshida, K Yoshimura

    MARS INTERNATIONAL REFERENCE ATMOSPHERE, LIVING WITH A STAR AND FUNDAMENTAL PHYSICS   35 ( 1 )   151 - 155   2005

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    DOI： 10.1016/j.asr.2003.10.050

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  • Measurement of cosmic-ray antiproton spectrum with BESS-2002

    S. Haino, K. Abe, H. Fuke, T. Maeno, Y. Makida, S. Matsuda, H. Matsumoto, J. W. Mitchell, A. A. Moiseev, J. Nishimura, M. Nozaki, O. Orito, U. Ormes, T. Sanuki, M. Sasaki, E. S. Seo, Y. Shikaze, R. E. Streitmatter, J. Suzuki, K. Tanaka, T. Yamagami, A. Yamamoto, T. Yoshida, K. Yoshimura

    PROCEEDINGS OF THE 29TH INTERNATIONAL COSMIC RAY CONFERENCE, VOL 3: OG1   13 - 16   2005

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  • A high-power target experiment

    HG Kirk, SA Kahn, H Ludewig, RB Palmer, R Samulyak, N Simos, T Tsang, Efthymiopoulos, I, A Fabich, H Haseroth, F Haug, J Lettry, TA Gabriel, Graves, V, J Haines, P Spampinato, KT McDonald, JRJ Bennett, T Bradshaw, TR Edgecock, P Drumm, Y Ivanyushenkov, Y Hayato, K Yoshimura

    2005 IEEE PARTICLE ACCELERATOR CONFERENCE (PAC), VOLS 1-4   2433 - 2435   2005

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  • Post-irradiation properties of candidate materials for high-power targets

    HG Kirk, H Ludewig, L Mausner, N Simos, P Thieberger, KT McDonald, JC Sheppard, LP Trung, Y Hayato, K Yoshimura

    2005 IEEE PARTICLE ACCELERATOR CONFERENCE (PAC), VOLS 1-4   1329 - 1331   2005

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  • Precise measurements of the cosmic ray antiproton spectrum with BESS including the effects of solar modulation

    JW Mitchell, K Abe, K Anraku, Y Asaoka, M Fujikawa, H Fuke, S Haino, T Hams, N Ikeda, M Imori, A Itazaki, K Izumi, MH Lee, T Maeno, Y Makida, S Matsuda, N Matsui, T Matsukawa, H Matsumoto, H Matsunaga, T Mitsui, A Moiseev, M Motoki, J Nishimura, M Nozaki, H Omiya, S Orito, JF Ormes, T Saeki, T Sanuki, M Sasaki, ES Seo, Y Shikaze, T Sonoda, SA Stephens, RE Streitmatter, J Suzuki, Y Takasugi, K Tanaka, K Tanizaki, Ueda, I, JZ Wang, Y Yajima, T Yamagami, A Yamamoto, Y Yamamoto, K Yamato, T Yoshida, K Yoshimura

    MARS INTERNATIONAL REFERENCE ATMOSPHERE, LIVING WITH A STAR AND FUNDAMENTAL PHYSICS   35 ( 1 )   135 - 141   2005

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    DOI： 10.1016/j.asr.2003.08.044

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  • Observation of low energy antiprotons at the 2004 BESS-Polar flight in Antarctica

    S. Matsuda, S. Haino, K. Abe, H. Fuke, T. Hams, K. C. Kim, T. Kumazawa, M. H. Lee, Y. Makida, H. Matsumoto, K. Matsumoto, J. W. Mitchell, A. A. Moiseev, Z. D. Myers, J. Nishimura, M. Nozaki, A. Ogata, M. Oikawa, J. F. Ormes, M. Sasaki, E. S. Seo, Y. Shikaze, R. E. Streitmatter, J. Suzuki, K. Takeuchi, K. Tanaka, T. Yamagami, A. Yamamoto, T. Yoshida, K. Yoshimura

    Proceedings of the 29th International Cosmic Ray Conference, Vol 3: OG1   25 - 28   2005

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  • Isotope measurements of cosmic-ray hydrogen and helium during the 2000 solar maximum

    K. C. Kim, E. S. Seo, K. Abe, H. Fuke, S. Haino, T. Maeno, Y. Makida, S. Matsuda, H. Matsumoto, J. W. Mitchell, A. A. Moiseev, J. Nishimura, M. Nozaki, S. Orito, J. F. Ornes, T. Sanuki, M. Sasaki, Y. Shikaze, R. E. Streitmatter, J. Suzuki, K. Tanaka, T. Yamagami, A. Yamamoto, T. Yoshida, K. Yoshimura

    Proceedings of the 29th International Cosmic Ray Conference, Vol 3: OG1   77 - 80   2005

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  • Flight performance of the BESS-Polar aerogel Cherenkov counter

    T. Hams, K. Abe, H. Fuke, S. Haino, K. C. Kim, T. Kumazawa, M. H. Lee, Y. Makida, S. Matsuda, H. Matsumoto, K. Matsumoto, J. W. Mitchell, A. A. Moiseev, Z. D. Myers, J. Nishimura, M. Nozaki, A. Ogata, M. Oikawa, J. F. Ormes, M. Sasaki, E. S. Seo, Y. Shikaze, R. E. Streitmatter, J. Suzuki, K. Takeuchi, K. Tanaka, T. Taniguci, T. Yamagami, A. Yamamoto, T. Yoshida, K. Yoshimura

    Proceedings of the 29th International Cosmic Ray Conference, Vol 3: OG1   69 - 72   2005

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  • The BESS Program

    JW Mitchell, K Abe, K Anraku, H Fuke, S Haino, T Hams, M Imori, A Itazaki, K Izumi, T Kumazawa, MH Lee, T Maeno, Y Makida, S Matsuda, H Matsumoto, K Matsumoto, A Moiseev, ZD Myers, J Nishimura, M Nozaki, H Omiya, S Orito, JF Ormes, T Sanuki, M Sasaki, ES Seo, Y Shikaze, RE Streitmatter, J Suzuki, Y Takasugi, K Tanaka, K Tanizaki, T Yamagami, A Yamamoto, Y Yamamoto, K Yamato, T Yoshida, K Yoshimura

    NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS   134   31 - 38   2004.9

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    DOI： 10.1016/j.nuclphysbps.2004.08.003

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  • Measurements of primary and atmospheric cosmic-ray spectra with the BESS-TeV spectrometer

    S Haino, T Sanuki, K Abe, K Anraku, Y Asaoka, H Fuke, M Imori, A Itasaki, T Maeno, Y Makida, S Matsuda, N Matsui, H Matsumoto, JW Mitchell, AA Moiseev, J Nishimura, M Nozaki, S Orito, JF Ormes, M Sasaki, ES Seo, Y Shikaze, RE Streitmatter, J Suzuki, Y Takasugi, K Tanaka, K Tanizaki, T Yamagami, A Yamamoto, Y Yamamoto, K Yamato, T Yoshida, K Yoshimura

    PHYSICS LETTERS B   594 ( 1-2 )   35 - 46   2004.7

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    DOI： 10.1016/j.physletb.2004.05.019

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  • Measurements of atmospheric muon spectra at mountain altitude (vol 234, pg 541, 2002)

    T Sanuki, M Fujikawa, K Abe, K Anraku, Y Asaoka, H Fuke, S Haino, M Imori, K Izumi, T Maeno, Y Makida, N Matsui, H Matsumoto, H Matsunaga, M Motoki, J Nishimura, M Nozaki, S Orito, M Sasaki, Y Shikaze, T Sonoda, J Suzuki, K Tanaka, Y Toki, A Yamamoto, Y Yamamoto, K Yamato, T Yoshida, K Yoshimura

    PHYSICS LETTERS B   581 ( 3-4 )   272 - 273   2004.2

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  • Progress of the BESS Superconducting Spectrometer

    S Haino, K Abe, K Anraku, H Fuke, T Hams, N Ikeda, A Itasaki, K Izumi, T Kumazawa, MH Lee, T Maeno, Y Makida, S Matsuda, N Matsui, H Matsumoto, K Matsumoto, JW Mitchell, AA Moiseev, J Nishimura, M Nozaki, H Omiya, S Orito, JF Ormes, T Sanuki, M Sasaki, ES Seo, Y Shikaze, RE Streitmatter, J Suzuki, Y Takasugi, S Takeuchi, K Tanaka, T Taniguchi, K Tanizaki, T Yamagami, A Yamamoto, Y Yamamoto, K Yamato, T Yoshida, K Yoshimura

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   518 ( 1-2 )   167 - 171   2004.2

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    DOI： 10.1016/j.nima.2003.10.051

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  • BESS-polar experiment

    T Yoshida, A Yamamoto, J Mitchell, K Abe, H Fuke, S Haino, T Hams, N Ikeda, A Itazaki, K Izumi, MH Lee, T Maeno, Y Makida, S Matsuda, H Matsumoto, A Moiseev, J Nishimura, M Nozaki, H Omiya, JF Ormes, M Sasaki, ES Seo, Y Shikaze, A Stephens, R Streitmatter, J Suzuki, Y Takasugi, K Tanaka, K Tanizaki, T Yamagami, Y Yamamoto, K Yamato, K Yoshimura

    NEXT GENERATION IN SCIENTIFIC BALLOONING   33 ( 10 )   1755 - 1762   2004

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    DOI： 10.1016/j.asr.2003.05.017

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  • Targetry R&D for PRISM project

    K Yoshimura, H Ohnishi, T Nakamoto, A Yamamoto, Y Ajima, M Aoki, N Fukasawa, K Ishibashi, Y Kuno, T Miura, K Nakahara, N Nosaka, M Numajiri, T Ogitsu, A Sato, A Yamanoi, B Autin, P Sievers

    NEUTRINO FACTORIES AND SUPERBEAMS   721   325 - 328   2004

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  • Measurement of cosmic-ray proton and antiproton spectra at mountain altitude

    T Sanuki, A Fujikawa, H Matsunaga, K Abe, K Anraku, H Fuke, S Haino, M Imori, K Izumi, T Maeno, Y Makida, N Matsui, H Matsumoto, J Nishimura, M Nozaki, S Orito, M Sasaki, Y Shikaze, J Suzuki, K Tanaka, A Yamamoto, Y Yamamoto, K Yamato, T Yoshida, K Yoshimura

    PHYSICS LETTERS B   577 ( 1-2 )   10 - 17   2003.12

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    DOI： 10.1016/j.physletb.2003.10.021

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  • Non-neutrino physics working group summary

    JM Poutissou, K Yoshimura

    JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS   29 ( 8 )   2005 - 2011   2003.8

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    DOI： 10.1088/0954-3899/29/8/391

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  • Current LH2-absorber R&D in MuCool

    MAC Cummings, D Allspach, L Bandura, EL Black, KW Cassel, A Dyshkant, D Errede, S Geer, J Greenwood, M Haney, D Hedin, S Ishimoto, CJ Johnstone, DM Kaplan, D Kubik, Y Kuno, W Lau, S Majewski, J Norem, B Norris, M Popovic, M Reep, D Summers, K Yoshimura

    JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS   29 ( 8 )   1689 - 1692   2003.8

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    DOI： 10.1088/0954-3899/29/8/331

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  • Measurements of proton, helium and muon spectra at small atmospheric depths with the BESS spectrometer

    K Abe, T Sanuki, K Anraku, Y Asaoka, H Fuke, S Haino, N Ikeda, M Imori, K Izumi, T Maeno, Y Makida, S Matsuda, N Matsui, T Matsukawa, H Matsumoto, JW Mitchell, AA Moiseev, J Nishimura, M Nozaki, S Orito, JF Ormes, M Sasaki, ES Seo, Y Shikaze, T Sonoda, RE Streitmatter, J Suzuki, K Tanaka, K Tanizaki, T Yamagami, A Yamamoto, Y Yamamoto, K Yamato, T Yoshida, K Yoshimura

    PHYSICS LETTERS B   564 ( 1-2 )   8 - 20   2003.7

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    DOI： 10.1016/S0370-2693(03)00676-2

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  • Convection-type LH2 absorber R&D for muon ionization cooling

    S Ishimoto, L Bandura, EL Black, M Boghosian, KW Cassel, MA Cummings, C Darve, A Dyshkant, D Errede, S Geer, M Haney, D Hedin, R Johnson, CJ Johnstone, DM Kaplan, D Kubik, Y Kuno, S Majewski, M Popovic, M Reep, D Summers, S Suzuki, K Yoshimura

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   503 ( 1-2 )   396 - 400   2003.5

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    DOI： 10.1016/S0168-9002(03)00724-1

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  • PRISM Overview

    K Yoshimura

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   503 ( 1-2 )   254 - 257   2003.5

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    DOI： 10.1016/S0168-9002(03)00688-0

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  • Progress in absorber R&D for muon cooling

    DM Kaplan, EL Black, M Boghosian, KW Cassel, RP Johnson, S Geer, CJ Johnstone, M Popovic, S Ishimoto, K Yoshimura, L Bandura, MA Cummings, A Dyshkant, D Hedin, D Kubik, C Darve, Y Kuno, D Errede, M Haney, S Majewski, M Reep, D Summers

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   503 ( 1-2 )   392 - 395   2003.5

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    DOI： 10.1016/S0168-9002(03)00723-X

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  • Precise measurements of atmospheric muon fluxes with the BESS spectrometer

    M Motoki, T Sanuki, S Orito, K Abe, K Anraku, Y Asaoka, M Fujikawa, H Fuke, S Haino, M Imori, K Izumi, T Maeno, Y Makida, N Matsui, H Matsumoto, H Matsunaga, J Mitchell, T Mitsui, A Moiseev, J Nishimura, M Nozaki, J Ormes, T Saeki, M Sasaki, ES Seo, Y Shikaze, T Sonoda, R Streitmatter, J Suzuki, K Tanaka, Ueda, I, JZ Wang, N Yajima, T Yamagami, A Yamamoto, Y Yamamoto, K Yamato, T Yoshida, K Yoshimura

    ASTROPARTICLE PHYSICS   19 ( 1 )   113 - 126   2003.4

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    DOI： 10.1016/S0927-6505(02)00195-0

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  • A new experiment to measure the muon electric dipole moment

    JP Miller, RM Carey, Logashenko, V, KR Lynch, BL Roberts, A Silenko, G Bennett, DM Lazarus, LB Leipuner, W Marciano, W Meng, WM Morse, R Prigl, YK Semertzidis, Balakin, V, A Bazhan, A Dunikov, B Khazin, IB Khriplovich, G Sylvestrov, Y Orlov, K Jungmann, PT Debevec, DW Hertzog, CJG Onderwater, CS Ozben, E Stephenson, M Auzinsh, P Cushman, R McNabb, N Shafer-Ray, K Yoshimura, A Aoki, Y Kuno, A Sato, M Iwasaki, FJM Farley

    INTERSECTIONS OF PARTICLE AND NUCLEAR PHYSICS   698   196 - 199   2003

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  • A new method for a sensitive deuteron EDM experiment

    YK Semertzidis, M Aoki, M Auzinsh, Balakin, V, A Bazhan, GW Bennett, RM Carey, P Cushman, PT Debevec, A Dudnikov, FJM Farley, DW Hertzog, M Iwasaki, K Jungmann, D Kawall, B Khazin, IB Khriplovich, B Kirk, Y Kuno, DM Lazarus, LB Leipuner, Logashenko, V, KR Lynch, WJ Marciano, R Mcnabb, W Meng, JP Miller, WM Morse, CJG Onderwater, YF Orlov, CS Ozben, R Prigl, S Rescia, BL Roberts, N Shafer-Ray, A Silenko, EJ Stephenson, K Yoshimura

    INTERSECTIONS OF PARTICLE AND NUCLEAR PHYSICS   698   200 - 204   2003

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  • BESS-Polar: Long duration flights at Antarctica to search for primordial antiparticles

    A Yamamoto, J Mitchell, K Abe, H Fuke, S Haino, N Ikeda, K Izumi, M Lee, T Maeno, Y Makida, S Matsuda, N Matsui, H Matsumoto, A Moiseev, J Nishimura, M Nozaki, H Omiya, JF Ormes, M Sasaki, ES Seo, Y Shikaze, J Suzuki, K Tanaka, K Tanizaki, T Yamagami, Y Yamamoto, K Yamato, T Yoshida, K Yoshimura

    NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS   113   208 - 212   2002.12

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    DOI： 10.1016/S0920-5632(02)01843-1

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  • Progress in search for antihelium with BESS

    M Sasaki, H Matsumoto, M Nozaki, T Saeki, K Abe, K Anraku, Y Asaoka, M Fujikawa, H Fuke, M Imori, S Haino, K Izumi, T Maeno, Y Makida, S Matsuda, N Matsui, T Matsukawa, H Matsunaga, JW Mitchell, T Mitsui, A Moiseev, M Motoki, J Nishimura, S Orito, JF Ormes, T Sanuki, Y Shikaze, ES Seo, T Sonoda, R Streitmatter, J Suzuki, K Tanaka, K Tanizaki, Ueda, I, JZ Wang, Y Yajima, Y Yamagami, A Yamamoto, Y Yamamoto, K Yamato, T Yoshida, K Yoshimura

    NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS   113   202 - 207   2002.12

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    DOI： 10.1016/S0920-5632(02)01842-X

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  • Measurement of low-energy antiproton detection efficiency in BESS below 1 GeV

    Y Asaoka, K Yoshimura, T Yoshida, K Abe, K Anraku, M Fujikawa, H Fuke, S Haino, K Izumi, T Maeno, Y Makida, A Matsui, H Matsumoto, H Matsunaga, M Motoki, M Nozaki, S Orito, T Sanuki, M Sasaki, Y Shikaze, T Sonoda, J Suzuki, K Tanaka, Y Toki, A Yamamoto

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   489 ( 1-3 )   170 - 177   2002.8

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    DOI： 10.1016/S0168-9002(02)00804-5

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  • Measurements of atmospheric muon spectra at mountain altitude

    T Sanuki, M Fujikawa, K Abe, K Anraku, Y Asaoka, H Fuke, S Haino, M Imori, K Izumi, T Maeno, Y Makida, N Matsui, H Matsumoto, H Matsunaga, M Motoki, J Nishimura, M Nozaki, S Orito, M Sasaki, Y Shikaze, T Sonoda, J Suzuki, K Tanaka, Y Toki, A Yamamoto, Y Yamamoto, K Yamato, T Yoshida, K Yoshimura

    PHYSICS LETTERS B   541 ( 3-4 )   234 - 242   2002.8

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    DOI： 10.1016/S0370-2693(02)02265-7

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  • A thin superconducting solenoid magnet for particle astrophysics Reviewed

    A Yamamoto, Y Makida, H Yamaoka, H Ohmiya, K Tanaka, T Haruyama, T Yoshida, K Yoshimura, S Matsuda, K Kikuchi, Y Ootani, S Mizumaki

    IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY   12 ( 1 )   438 - 442   2002.3

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    DOI： 10.1109/TASC.2002.1018438

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  • Measurements of cosmic-ray low-energy antiproton and proton spectra in a transient period of solar field reversal

    Y Asaoka, Y Shikaze, K Abe, K Anraku, M Fujikawa, H Fuke, S Haino, M Imori, K Izumi, T Maeno, Y Makida, S Matsuda, N Matsui, T Matsukawa, H Matsumoto, H Matsunaga, J Mitchell, T Mitsui, A Moiseev, M Motoki, J Nishimura, M Nozaki, S Orito, JF Ormes, T Saeki, T Sanuki, M Sasaki, ES Seo, T Sonoda, R Streitmatter, J Suzuki, K Tanaka, K Tanizaki, Ueda, I, JZ Wang, Y Yajima, Y Yamagami, A Yamamoto, Y Yamamoto, K Yamato, T Yoshida, K Yoshimura

    PHYSICAL REVIEW LETTERS   88 ( 5 )   2002.2

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    DOI： 10.1103/PhysRevLett.88.051101

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  • Measurement of cosmic-ray hydrogen and helium and their isotopic composition with the BESS experiment

    JZ Wang, ES Seo, K Anraku, M Fujikawa, M Imori, T Maeno, N Matsui, H Matsunaga, M Motoki, S Orito, T Saeki, T Sanuki, Ueda, I, K Yoshimura, Y Makida, J Suzuki, K Tanaka, A Yamamoto, T Yoshida, T Mitsui, H Matsumoto, M Nozaki, M Sasaki, J Mitchell, A Moiseev, J Ormes, R Streitmatter, J Nishimura, Y Yajima, T Yamagami

    ASTROPHYSICAL JOURNAL   564 ( 1 )   244 - 259   2002.1

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    DOI： 10.1086/324140

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  • BESS and its future prospect for polar long duration flights

    A Yamamoto, K Abe, K Anraku, Y Asaoka, M Fujikawa, H Fuke, S Haino, M Imori, K Izumi, T Maeno, Y Makida, N Matsui, H Matsumoto, H Matsunaga, FB McDonald, J Mitchell, T Mitsui, A Moiseev, M Motoki, J Nishimura, M Nozaki, S Orito, JF Ormes, D Righter, T Saeki, T Sanuki, M Sasaki, ES Seo, Y Shikaze, T Sonoda, R Streitmatter, J Suzuki, K Tanaka, K Tanizaki, Ueda, I, JZ Wang, N Yajima, T Yamagami, Y Yamamoto, H Yamaoka, K Yamato, T Yoshida, K Yoshimura

    SCIENTIFIC BALLOONING IN THE NEXT CENTURY: GOALS AND CHALLENGES   30 ( 5 )   1253 - 1262   2002

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    DOI： 10.1016/S0273-1177(02)00541-0

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  • Successive measurements of cosmic-ray antiproton spectrum in a positive phase of the solar cycle

    T Maeno, S Orito, H Matsunaga, K Abe, K Anraku, Y Asaoka, M Fujikawa, M Imori, Y Makida, N Matsui, H Matsumoto, J Mitchell, T Mitsui, A Moiseev, M Motoki, J Nishimura, M Nozaki, J Ormes, T Saeki, T Sanuki, M Sasaki, ES Seo, Y Shikaze, T Sonoda, R Streitmatter, J Suzuki, K Tanaka, Ueda, I, JZ Wang, N Yajima, T Yamagami, A Yamamoto, T Yoshida, K Yoshimura

    ASTROPARTICLE PHYSICS   16 ( 2 )   121 - 128   2001.11

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    DOI： 10.1016/S0927-6505(01)00107-4

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  • Cosmic-ray antiprotons and antinuclei

    K Yoshimura

    ORIGIN AND ACCELERATION OF COSMIC RAYS   27 ( 4 )   693 - 703   2001

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    DOI： 10.1016/S0273-1177(01)00111-9

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  • Precise measurements of cosmic-ray hydrogen and helium spectra with BESS

    T Sanuki, H Matsumoto, M Nozaki, K Abe, K Anraku, Y Asaoka, M Fujikawa, M Imori, T Maeno, Y Makida, N Matsui, H Matsunaga, J Mitchell, T Mitsui, A Moiseev, M Motoki, J Nishimura, S Orito, J Ormes, T Saeki, M Sasaki, ES Seo, Y Shikaze, T Sonoda, R Streitmatter, J Suzuki, K Tanaka, Ueda, I, JZ Wang, N Yajima, T Yamagami, A Yamamoto, T Yoshida, K Yoshimura

    ORIGIN AND ACCELERATION OF COSMIC RAYS   27 ( 4 )   761 - 766   2001

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    DOI： 10.1016/S0273-1177(01)00118-1

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  • Precision measurement of antiproton spectrum with BESS

    S Orito, T Maeno, H Matsunaga, K Abe, K Anraku, Y Asaoka, M Fujikawa, M Imori, M Ishino, Y Makida, N Matsui, H Matsumoto, J Mitchell, T Mitsui, A Moiseev, M Motoki, J Nishimura, M Nozaki, J Ormes, T Saeki, T Sanuki, M Sasaki, ES Seo, Y Shikaze, T Sonoda, R Streitmatter, J Suzuki, K Tanaka, Ueda, I, N Yajima, T Yamagami, A Yamamoto, T Yoshida, K Yoshimura

    SUN AND SIMILAR STARS/COSMIC RAY SPECTRA AND COMPOSITION   26 ( 11 )   1847 - 1850   2001

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  • Precise measurements of cosmic-ray antiproton spectrum in a positive phase of the solar cycle

    T Maeno, N Nozaki, S Orito, H Matsunaga, K Abe, K Anraku, Y Asaoka, M Fujikawa, M Imori, Y Makida, N Matsui, H Matsumoto, J Mitchell, T Mitsui, A Moiseev, M Motoki, J Nishimura, J Ormes, T Saeki, T Sanuki, M Sasaki, ES Seo, Y Shikaze, T Sonoda, R Streitmatter, J Suzuki, K Tanaka, Ueda, I, JZ Wang, N Yajima, T Yamagami, A Yamamoto, T Yoshida, K Yoshimura

    ORIGIN AND ACCELERATION OF COSMIC RAYS   27 ( 4 )   711 - 716   2001

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    DOI： 10.1016/S0273-1177(01)00129-6

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  • Spectra of H and He measured in a series of annual flights Reviewed

    ES Seo, JZ Wang, H Matsunaga, K Anraku, M Imori, Y Makida, H Matsumoto, FB McDonald, J Mitchell, A Moiseev, M Motoki, J Nishimura, M Nozaki, S Orito, JF Ormes, M Otoba, T Saeki, T Sanuki, RE Streitmatter, J Suzuki, K Tanaka, Ueda, I, N Yajima, T Yamagami, A Yamamoto, T Yoshida, K Yoshimura

    SUN AND SIMILAR STARS/COSMIC RAY SPECTRA AND COMPOSITION   26 ( 11 )   1831 - 1834   2001

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  • Precise measurement of cosmic-ray proton and helium spectra with the BESS spectrometer

    T Sanuki, M Motoki, H Matsumoto, ES Seo, JZ Wang, K Abe, K Anraku, Y Asaoka, M Fujikawa, M Imori, T Maeno, Y Makida, N Matsui, H Matsunaga, J Mitchell, T Mitsui, A Moiseev, J Nishimura, M Nozaki, S Orito, J Ormes, T Saeki, M Sasaki, Y Shikaze, T Sonoda, R Streitmatter, J Suzuki, K Tanaka, Ueda, I, N Yajima, T Yamagami, A Yamamoto, T Yoshida, K Yoshimura

    ASTROPHYSICAL JOURNAL   545 ( 2 )   1135 - 1142   2000.12

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    DOI： 10.1086/317873

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  • Large-area scintillator hodoscope with 50 ps timing resolution onboard BESS

    Y Shikaze, S Orito, T Mitsui, K Yoshimura, H Matsumoto, H Matsunaga, M Nozaki, T Sonoda, Ueda, I, T Yoshida

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   455 ( 3 )   596 - 606   2000.12

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    DOI： 10.1016/S0168-9002(00)00571-4

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  • A superconducting solenoidal spectrometer for a balloon-borne experiment

    Y Ajima, K Anraku, T Haga, Y Higashi, H Honda, M Imori, S Inaba, N Kimura, M Kobayashi, Y Makida, N Matsui, H Matsumoto, H Matsunaga, M Motoki, M Nozaki, Y Nishihara, J Nishimura, S Orito, M Otoba, T Saeki, T Sanuki, M Sasaki, K Shimamura, J Suzuki, K Suzuki, N Takimi, K Tanaka, T Tsunoda, Ueda, I, T Yajima, T Yamagami, A Yamamoto, H Yamaoka, T Yoshida, K Yoshimura

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   443 ( 1 )   71 - 100   2000.3

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  • Precision measurement of cosmic-ray antiproton spectrum

    S Orito, T Maeno, H Matsunaga, K Abe, K Anraku, Y Asaoka, M Fujikawa, M Imori, M Ishino, Y Makida, N Matsui, H Matsumoto, J Mitchell, T Mitsui, A Moiseev, M Motoki, J Nishimura, M Nozaki, J Ormes, T Saeki, T Sanuki, M Sasaki, ES Seo, Y Shikaze, T Sonoda, R Streitmatter, J Suzuki, K Tanaka, Ueda, I, N Yajima, T Yamagami, A Yamamoto, T Yoshida, K Yoshimura

    PHYSICAL REVIEW LETTERS   84 ( 6 )   1078 - 1081   2000.2

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    DOI： 10.1103/PhysRevLett.84.1078

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  • Measurement of low-energy cosmic-ray antiprotons at solar minimum

    H Matsunaga, S Orito, H Matsumoto, K Yoshimura, A Moiseev, K Anraku, R Golden, M Imori, Y Makida, J Mitchell, M Motoki, J Nishimura, M Nozaki, J Ormes, T Saeki, T Sanuki, R Streitmatter, J Suzuki, K Tanaka, Ueda, I, N Yajima, T Yamagami, A Yamamoto, T Yoshida

    PHYSICAL REVIEW LETTERS   81 ( 19 )   4052 - 4055   1998.11

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    DOI： 10.1103/PhysRevLett.81.4052

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  • Development of a large-area aerogel Cherenkov counter onboard BESS

    Y Asaoka, K Abe, K Yoshimura, M Ishino, M Fujikawa, S Orito

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   416 ( 2-3 )   236 - 242   1998.10

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    DOI： 10.1016/S0168-9002(98)00772-4

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  • A new limit on the flux of cosmic antihelium

    T Saeki, K Anraku, S Orito, J Ormes, M Imori, B Kimbell, Y Makida, H Matsumoto, H Matsunaga, J Mitchell, M Motoki, J Nishimura, M Nozaki, M Otoba, T Sanuki, R Streitmatter, J Suzuki, K Tanaka, Ueda, I, N Yajima, T Yamagami, A Yamamoto, T Yoshida, K Yoshimura

    PHYSICS LETTERS B   422 ( 1-4 )   319 - 324   1998.3

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    DOI： 10.1016/S0370-2693(98)00131-2

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  • Precision positioning of SuperKamiokande with GPS for a long-baseline neutrino oscillation experiment

    H Noumi, M Kurodai, M Ieiri, H Ishii, H Kasa, Y Katoh, M Minakawa, K Nakamura, K Nishikawa, Y Suzuki, M Takasaki, KH Tanaka, Y Yamanoi, K Yoshimura

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   398 ( 2-3 )   399 - 408   1997.10

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    DOI： 10.1016/S0168-9002(97)00899-1

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  • Antihelium in cosmic rays: A new upper limit and its significance

    JF Ormes, AA Moiseev, T Saeki, K Anraku, S Orito, RL Golden, M Imori, S Inaba, BL Kimbell, N Kimura, Y Makida, H Matsumoto, H Matsunaga, JW Mitchell, M Motoki, J Nishimura, M Nozaki, RE Streitmatter, J Suzuki, K Tanaka, Ueda, I, N Yajima, T Yamagami, A Yamamoto, T Yoshida, K Yoshimura

    ASTROPHYSICAL JOURNAL   482 ( 2 )   L187 - L190   1997.6

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    DOI： 10.1086/310700

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  • Cosmic-ray antiproton flux in the energy range form 200 to 600 MeV

    A Moiseev, K Yoshimura, Ueda, I, K Anraku, R Golden, M Imori, S Inaba, B Kimbell, N Kimura, Y Makida, H Matsumoto, H Matsunaga, J Mitchell, M Motoki, J Nishimura, M Nozaki, S Orito, J Ormes, T Saeki, ES Seo, S Stochaj, R Streitmatter, J Suzuki, K Tanaka, N Yajima, T Yamagami, A Yamamoto, T Yoshida

    ASTROPHYSICAL JOURNAL   474 ( 1 )   479 - 489   1997.1

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    DOI： 10.1086/303463

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  • Measurement of cosmic ray H and He isotopes in a Balloon Borne Experiment with a superconducting solenoid spectrometer

    ES Seo, H Matsunaga, K Anraku, M Imori, Y Makida, H Matsumoto, FB McDonald, J Mitchell, A Moiseev, M Motoki, J Nishimura, M Nozaki, S Orito, JF Ormes, M Otoba, T Saeki, T Sanuki, RE Streitmatter, J Suzuki, K Tanaka, Ueda, I, JZ Wang, N Yajima, T Yamagami, A Yamamoto, T Yoshida, K Yoshimura

    COSMIC RADIATION: SPECTRA AND COMPOSITION   19 ( 5 )   751 - 754   1997

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    DOI： 10.1016/S0273-1177(96)00140-8

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  • Cosmic ray antiproton spectrum measured by BESS in 1993-1995

    J Nishimura, H Matsunaga, M Motoki, A Moiseev, K Anraku, M Imori, Y Makida, H Matsumoto, J Mitchell, M Nozaki, S Orito, J Ormes, M Otoba, T Saeki, T Sanuki, R Streitmatter, J Suzuki, K Tanaka, Ueda, I, N Yajima, T Yamagami, A Yamamoto, T Yoshida, K Yoshimura

    COSMIC RADIATION: SPECTRA AND COMPOSITION   19 ( 5 )   771 - 774   1997

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    DOI： 10.1016/S0273-1177(96)00145-7

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  • Upper limit on the nu(tau) mass from tau->3h nu(tau) decays Reviewed

    G Alexander, J Allison, N Altekamp, K Ametewee, KJ Anderson, S Anderson, S Arcelli, S Asai, D Axen, G Azuelos, AH Ball, E Barberio, RJ Barlow, R Bartoldus, Batley, JR, G Beaudoin, J Bechtluft, C Beeston, T Behnke, AN Bell, KW Bell, G Bella, S Bentvelsen, P Berlich, S Bethke, O Biebel, Blobel, V, IJ Bloodworth, JE Bloomer, P Bock, HM Bosch, M Boutemeur, BT Bouwens, S Braibant, P BrightThomas, RM Brown, HJ Burckhart, C Burgard, R Burgin, P Capiluppi, RK Carnegie, AA Carter, Carter, JR, CY Chang, C Charlesworth, DG Charlton, D Chrisman, SL Chu, PEL Clarke, Cohen, I, JE Conboy, OC Cooke, M Cuffiani, S Dado, C Dallapiccola, GM Dallavalle, C Darling, S DeJong, LA delPozo, MS Dixit, EDE Silva, M Doucet, E Duchovni, G Duckeck, IP Duerdoth, JEG Edwards, PG Estabrooks, HG Evans, M Evans, F Fabbri, P Fath, F Fiedler, M Fierro, HM Fischer, R Folman, DG Fong, M Foucher, H Fukui, A Furtjes, P Gagnon, A Gaidot, JW Gary, J Gascon, SM GasconShotkin, NI Geddes, C GeichGimbel, SW Gensler, FX Gentit, T Geralis, G Giacomelli, P Giacomelli, R Giacomelli, Gibson, V, WR Gibson, DM Gingrich, J Goldberg, MJ Goodrick, W Gorn, C Grandi, E Gross, M Gruwe, C Hajdu, GG Hanson, M Hansroul, M Hapke, CK Hargrove, PA Hart, C Hartmann, M Hauschild, CM Hawkes, R Hawkings, RJ Hemingway, G Herten, RD Heuer, MD Hildreth, JC Hill, SJ Hillier, T Hilse, PR Hobson, RJ Homer, AK Honma, D Horvath, R Howard, RE HughesJones, DE Hutchcroft, P IgoKemenes, DC Imrie, MR Ingram, A Jawahery, PW Jeffreys, H Jeremie, M Jimack, A Joly, G Jones, M Jones, RWL Jones, U Jost, P Jovanovic, J Kanzaki, D Karlen, T Kawamoto, RK Keeler, RG Kellogg, BW Kennedy, J King, J Kirk, S Kluth, T Kobayashi, M Kobel, DS Koetke, TP Kokott, S Komamiya, R Kowalewski, T Kress, P Krieger, J vonKrogh, P Kyberd, GD Lafferty, H Lafoux, R Lahmann, WP Lai, D Lanske, J Lauber, JG Layter, AM Lee, E Lefebvre, D Lellouch, J Letts, L Levinson, C Lewis, SL Lloyd, FK Loebinger, GD Long, B Lorazo, MJ Losty, J Ludwig, A Malik, M Mannelli, S Marcellini, C Markus, AJ Martin, JP Martin, G Martinez, T Mashimo, W Matthews, P Mattig, WJ McDonald, J McKenna, EA Mckigney, TJ McMahon, AI McNab, F Meijers, S Menke, FS Merritt, H Mes, J Meyer, A Michelini, G Mikenberg, DJ Miller, R Mir, W Mohr, A Montanari, T Mori, M Morii, U Muller, B Nellen, B Nijjhar, R Nisius, SW ONeale, FG Oakham, F Odorici, HO Ogren, T Omori, MJ Oreglia, S Orito, M Palazzo, J Palinkas, JP Pansart, G Pasztor, Pater, JR, GN Patrick, MJ Pearce, S Petzold, JE Pilcher, J Pinfold, DE Plane, P Poffenberger, B Poli, A Posthaus, H Przysiezniak, DL Rees, D Rigby, MG Rison, SA Robins, N Rodning, JM Roney, A Rooke, E Ros, AM Rossi, M Rosvick, P Routenburg, Y Rozen, K Runge, O Runolfsson, DR Rust, R Rylko, EKG Sarkisyan, M Sasaki, C Sbarra, AD Schaile, O Schaile, F Scharf, P ScharffHansen, P Schenk, B Schmitt, M Schroder, HC SchultzCoulon, M Schulz, P Schutz, J Schwiening, WG Scott, TG Shears, BC Shen, CH ShepherdThemistocleous, P Sherwood, GP Siroli, A Sittler, A Skillman, A Skuja, AM Smith, TJ Smith, GA Snow, R Sobie, S SoldnerRembold, RW Springer, M Sproston, A Stahl, M Starks, K Stephens, J Steuerer, B Stockhausen, D Strom, F Strumia, P Szymanski, R Tafirout, H Takeda, P Taras, S Tarem, M Tecchio, N Tesch, M Thiergen, MA Thomson, E vonTorne, S Towers, M Tscheulin, E Tsur, AS Turcot, MF TurnerWatson, P Utzat, R VanKooten, G Vasseur, M Verzocchi, P Vikas, M Vincter, EH Vokurka, F Wackerle, A Wagner, CP Ward, DR Ward, JJ Ward, PM Watkins, AT Watson, NK Watson, P Weber, PS Wells, N Wermes, JS White, B Wilkens, GW Wilson, JA Wilson, T Wlodek, G Wolf, S Wotton, TR Wyatt, S Xella, S Yamashita, G Yekutieli, K Yoshimura, Zacek, V

    ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS   72 ( 2 )   231 - 238   1996.10

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    DOI： 10.1007/s002880050240

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  • Measurements with photonic events in e(+)e(-) collisions at centre-of-mass energies of 130-140 GeV

    G Alexander, J Allison, N Altekamp, K Ametewee, KJ Anderson, S Anderson, S Arcelli, S Asai, D Axen, G Azuelos, AH Ball, E Barberio, RJ Barlow, R Bartoldus, Batley, JR, G Beaudoin, J Bechtluft, C Beeston, T Behnke, AN Bell, KW Bell, G Bella, S Bentvelsen, P Berlich, S Bethke, O Biebel, Blobel, V, IJ Bloodworth, JE Bloomer, P Bock, HM Bosch, M Boutemeur, BT Bouwens, S Braibant, RM Brown, HJ Burckhart, C Burgard, R Burgin, P Capiluppi, RK Carnegie, AA Carter, Carter, JR, CY Chang, C Charlesworth, DG Charlton, D Chrisman, SL Chu, PEL Clarke, Cohen, I, JE Conboy, OC Cooke, M Cuffiani, S Dado, C Dallapiccola, GM Dallavalle, C Darling, S DeJong, LA delPozo, MS Dixit, EDE Silva, M Doucet, E Duchovni, G Duckeck, IP Duerdoth, JEG Edwards, PG Estabrooks, HG Evans, M Evans, F Fabbri, P Fath, F Fiedler, M Fierro, HM Fischer, R Folman, DG Fong, M Foucher, H Fukui, A Furtjes, P Gagnon, A Gaidot, JW Gary, J Gascon, SM GasconShotkin, NI Geddes, C GeichGimbel, SW Gensler, FX Gentit, T Geralis, G Giacomelli, P Giacomelli, R Giacomelli, Gibson, V, WR Gibson, DM Gingrich, J Goldberg, MJ Goodrick, W Gorn, C Grandi, E Gross, M Gruwe, C Hajdu, GG Hanson, M Hansroul, M Hapke, CK Hargrove, PA Hart, C Hartmann, M Hauschild, CM Hawkes, R Hawkings, RJ Hemingway, G Herten, RD Heuer, MD Hildreth, JC Hill, SJ Hillier, T Hilse, PR Hobson, RJ Homer, AK Honma, D Horvath, R Howard, RE HughesJones, DE Hutchcroft, P IgoKemenes, DC Imrie, MR Ingram, A Jawahery, PW Jeffreys, H Jeremie, M Jimack, A Joly, G Jones, M Jones, RWL Jones, U Jost, P Jovanovic, J Kanzaki, D Karlen, T Kawamoto, RK Keeler, RG Kellogg, BW Kennedy, J King, J Kirk, S Kluth, T Kobayashi, M Kobel, DS Koetke, TP Kokott, S Komamiya, R Kowalewski, T Kress, P Krieger, J vonKrogh, P Kyberd, GD Lafferty, H Lafoux, R Lahmann, WP Lai, D Lanske, J Lauber, JG Layter, AM Lee, E Lefebvre, D Lellouch, J Letts, L Levinson, C Lewis, SL Lloyd, FK Loebinger, GD Long, B Lorazo, MJ Losty, J Ludwig, A Luig, A Malik, M Mannelli, S Marcellini, C Markus, AJ Martin, JP Martin, G Martinez, T Mashimo, W Matthews, P Mattig, WJ McDonald, J McKenna, EA Mckigney, TJ McMahon, AI McNab, F Meijers, S Menke, FS Merritt, H Mes, J Meyer, A Michelini, G Mikenberg, DJ Miller, R Mir, W Mohr, A Montanari, T Mori, M Morii, U Muller, B Nellen, B Nijjhar, R Nisius, SW ONeale, FG Oakham, F Odorici, OH Ogren, T Omori, MJ Oreglia, S Orito, M Palazzo, J Palinkas, JP Pansart, G Pasztor, Pater, JR, GN Patrick, MJ Pearce, S Petzold, JE Pilcher, J Pinfold, DE Plane, P Poffenberger, B Poli, A Posthaus, H Przysiezniak, DL Rees, D Rigby, MG Rison, SA Robins, N Rodning, JM Roney, A Rooke, E Ros, AM Rossi, M Rosvick, P Routenburg, Y Rozen, K Runge, O Runolfsson, DR Rust, R Rylko, EKG Sarkisyan, M Sasaki, C Sbarra, AD Schaile, O Schaile, F Scharf, P ScharffHansen, P Schenk, B Schmitt, M Schroder, HC SchultzCoulon, M Schulz, P Schutz, J Schwiening, WG Scott, TG Shears, BC Shen, CH ShepherdThemistocleous, P Sherwood, GP Siroli, A Sittler, A Skillman, A Skuja, AM Smith, TJ Smith, GA Snow, R Sobie, S SoldnerRembold, RW Springer, M Sproston, A Stahl, M Starks, K Stephens, J Steuerer, B Stockhausen, D Strom, F Strumia, P Szymanski, R Tafirout, H Takeda, P Taras, S Tarem, M Tecchio, N Tesch, M Thiergen, MA Thomson, E vonTorne, S Towers, M Tscheulin, E Tsur, AS Turcot, MF TurnerWatson, P Utzat, R vanKooten, G Vasseur, M Verzocchi, P Vikas, M Vincter, EH Vokurka, F Wackerle, A Wagner, CP Ward, DR Ward, JJ Ward, PM Watkins, AT Watson, NK Watson, P Weber, PS Wells, N Wermes, JS White, B Wilkens, GW Wilson, JA Wilson, T Wlodek, G Wolf, S Wotton, TR Wyatt, S Xella, S Yamashita, G Yekutieli, K Yoshimura, Zacek, V

    PHYSICS LETTERS B   377 ( 1-3 )   222 - 234   1996.6

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    DOI： 10.1016/0370-2693(96)00488-1

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  • Search for chargino and neutralino production using the OPAL detector at root s=130-136GeV at LEP

    G Alexander, J Allison, N Altekamp, K Ametewee, KJ Anderson, S Anderson, S Arcelli, S Asai, D Axen, G Azuelos, AH Ball, E Barberio, RJ Barlow, R Bartoldus, Batley, JR, G Beaudoin, J Bechtluft, C Beeston, T Behnke, AN Bell, KW Bell, G Bella, S Bentvelsen, P Berlich, S Bethke, O Biebel, Blobel, V, IJ Bloodworth, JE Bloomer, P Bock, HM Bosch, M Boutemeur, BT Bouwens, S Braibant, RM Brown, HJ Burckhart, C Burgard, R Burgin, P Capiluppi, RK Carnegie, AA Carter, Carter, JR, CY Chang, C Charlesworth, DG Charlton, D Chrisman, SL Chu, PEL Clarke, Cohen, I, JE Conboy, OC Cooke, M Cuffiani, S Dado, C Dallapiccola, GM Dallavalle, C Darling, S DeJong, LA delPozo, MS Dixit, ED Silva, E Duchovni, G Duckeck, IP Duerdoth, JEG Edwards, PG Estabrooks, HG Evans, M Evans, F Fabbri, P Fath, F Fiedler, M Fierro, HM Fischer, R Folman, DG Fong, M Foucher, H Fukui, A Furtjes, P Gagnon, A Gaidot, JW Gary, J Gascon, SM GasconShotkin, NI Geddes, C GeichGimbel, SW Gensler, FX Gentit, T Geralis, G Giacomelli, P Giacomelli, R Giacomelli, Gibson, V, WR Gibson, DM Gingrich, J Goldberg, MJ Goodrick, W Gorn, C Grandi, E Gross, M Gruwe, C Hajdu, GG Hanson, M Hansroul, M Hapke, CK Hargrove, PA Hart, C Hartmann, M Hauschild, CM Hawkes, R Hawkings, RJ Hemingway, G Herten, RD Heuer, MD Hildreth, JC Hill, SJ Hillier, T Hilse, PR Hobson, RJ Homer, AK Honma, D Horvath, R Howard, RE HughesJones, DE Hutchcroft, P IgoKemenes, DC Imrie, MR Ingram, A Jawahery, PW Jeffreys, H Jeremie, M Jimack, A Joly, G Jones, M Jones, RWL Jones, U Jost, P Jovanovic, J Kanzaki, D Karlen, T Kawamoto, RK Keeler, RG Kellogg, BW Kennedy, J King, J Kirk, S Kluth, T Kobayashi, M Kobel, DS Koetke, TP Kokott, S Komamiya, R Kowalewski, T Kress, P Krieger, J vonKrogh, P Kyberd, GD Lafferty, H Lafoux, R Lahmann, WP Lai, D Lanske, J Lauber, JG Layter, AM Lee, E Lefebvre, D Lellouch, J Letts, L Levinson, C Lewis, SL Lloyd, FK Loebinger, GD Long, B Lorazo, MJ Losty, J Ludwig, A Luig, A Malik, M Mannelli, S Marcellini, C Markus, AJ Martin, JP Martin, G Martinez, T Mashimo, W Matthews, P Mattig, WJ McDonald, J McKenna, EA Mckigney, TJ McMahon, AI McNab, F Meijers, S Menke, FS Merritt, H Mes, J Meyer, A Michelini, G Mikenberg, B Miller, R Mir, W Mohr, A Montanari, T Mori, M Morii, U Muller, B Nellen, B Nijjhar, R Nisius, SW ONeale, FG Oakham, F Odorici, HO Ogren, T Omori, MJ Oreglia, S Orito, M Palazzo, J Palinkas, FM Palmonari, JP Pansart, G Pasztor, Pater, JR, GN Patrick, MJ Pearce, S Petzold, JE Pilcher, J Pinfold, DE Plane, P Poffenberger, B Poli, A Posthaus, H Przysiezniak, DL Rees, D Rigby, MG Rison, SA Robins, N Rodning, JM Roney, A Rooke, E Ros, AM Rossi, M Rosvick, P Routenburg, Y Rozen, K Runge, O Runolfsson, DR Rust, R Rylko, EKG Sarkisyan, M Sasaki, C Sbarra, AD Schaile, O Schaile, F Scharf, P ScharffHansen, P Schenk, B Schmitt, M Schroder, HC SchultzCoulon, M Schulz, P Schutz, J Schwiening, WG Scott, TG Shears, BC Shen, CH ShepherdThemistocleous, P Sherwood, GP Siroli, A Sittler, A Skillman, A Skuja, AM Smith, TJ Smith, GA Snow, R Sobie, S SoldnerRembold, RW Springer, M Sproston, A Stahl, M Starks, K Stephens, J Steuerer, B Stockhausen, D Strom, F Strumia, P Szymanski, R Tafirout, H Takeda, P Taras, S Tarem, M Tecchio, N Tesch, M Thiergen, MA Thomson, E vonTorne, S Towers, M Tscheulin, E Tsur, AS Turcot, MF TurnerWatson, P Utzat, R VanKooten, G Vasseur, M Verzocchi, P Vikas, M Vincter, EH Vokurka, F Wackerle, A Wagner, CP Ward, DR Ward, JJ Ward, PM Watkins, AT Watson, NK Watson, P Weber, PS Wells, N Wermes, JS White, B Wilkens, GW Wilson, JA Wilson, T Wlodek, G Wolf, S Wotton, TR Wyatt, S Xella, S Yamashita, G Yekutieli, K Yoshimura, Zacek, V

    PHYSICS LETTERS B   377 ( 1-3 )   181 - 194   1996.6

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    DOI： 10.1016/0370-2693(96)00301-2

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  • Topological search for the production of neutralinos and scalar

    G Alexander, J Allison, N Altekamp, K Ametewee, KJ Anderson, S Anderson, S Arcelli, S Asai, D Axen, G Azuelos, AH Ball, E Barberio, RJ Barlow, R Bartoldus, Batley, JR, G Beaudoin, J Bechtluft, C Beeston, T Behnke, AN Bell, KW Bell, G Bella, S Bentvelsen, P Berlich, S Bethke, O Biebel, Blobel, V, IJ Bloodworth, JE Bloomer, P Bock, HM Bosch, M Boutemeur, BT Bouwens, S Braibant, P BrightThomas, RM Brown, HJ Burckhart, C Burgard, R Burgin, P Capiluppi, RK Carnegie, AA Carter, Carter, JR, CY Chang, C Charlesworth, DG Charlton, D Chrisman, SL Chu, PEL Clarke, Cohen, I, JE Conboy, OC Cooke, M Cuffiani, S Dado, C Dallapiccola, GM Dallavalle, C Darling, S DeJong, LA delPozo, MS Dixit, EDE Silva, M Doucet, E Duchovni, G Duckeck, IP Duerdoth, JEG Edwards, PG Estabrooks, HG Evans, M Evans, F Fabbri, P Fath, F Fiedler, M Fierro, HM Fischer, R Folman, DG Fong, M Foucher, H Fukui, A Furtjes, P Gagnon, A Gaidot, JW Gary, J Gascon, SM GasconShotkin, NI Geddes, C GeichGimbel, SW Gensler, FX Gentit, T Geralis, G Giacomelli, P Giacomelli, R Giacomelli, Gibson, V, WR Gibson, DM Gingrich, J Goldberg, MJ Goodrick, W Gorn, C Grandi, E Gross, M Gruwe, C Hajdu, GG Hanson, M Hansroul, M Hapke, CK Hargrove, PA Hart, C Hartmann, M Hauschild, CM Hawkes, R Hawkings, RJ Hemingway, G Herten, RD Heuer, MD Hildreth, JC Hill, SJ Hillier, T Hilse, PR Hobson, RJ Homer, AK Honma, D Horvath, R Howard, RE HughesJones, DE Hutchcroft, P IgoKemenes, DC Imrie, MR Ingram, A Jawahery, PW Jeffreys, H Jeremie, M Jimack, A Joly, G Jones, M Jones, RWL Jones, U Jost, P Jovanovic, J Kanzaki, D Karlen, T Kawamoto, RK Keeler, RG Kellogg, BW Kennedy, J King, J Kirk, S Kluth, T Kobayashi, M Kobel, DS Koetke, TP Kokott, S Komamiya, R Kowalewski, T Kress, P Krieger, J vonKrogh, P Kyberd, GD Lafferty, H Lafoux, R Lahmann, WP Lai, D Lanske, J Lauber, JG Layter, AM Lee, E Lefebvre, D Lellouch, J Letts, L Levinson, C Lewis, SL Lloyd, FK Loebinger, GD Long, B Lorazo, MJ Losty, J Ludwig, A Luig, A Malik, M Mannelli, S Marcellini, C Markus, AJ Martin, JP Martin, G Martinez, T Mashimo, W Matthews, P Mattig, WJ McDonald, J McKenna, EA Mckigney, TJ McMahon, AI McNab, F Meijers, S Menke, FS Merritt, H Mes, J Meyer, A Michelini, G Mikenberg, DJ Miller, R Mir, W Mohr, A Montanari, T Mori, M Morii, U Muller, B Nellen, B Nijjhar, R Nisius, SW ONeale, FG Oakham, F Odorici, HO Ogren, T Omori, MJ Oreglia, S Orito, M Palazzo, J Palinkas, JP Pansart, G Pasztor, Pater, JR, GN Patrick, MJ Pearce, S Petzold, JE Pilcher, J Pinfold, DE Plane, P Poffenberger, B Poli, A Posthaus, H Przysiezniak, DL Rees, D Rigby, MG Rison, SA Robins, N Rodning, JM Roney, A Rooke, E Ros, AM Rossi, M Rosvick, P Routenburg, Y Rozen, K Runge, O Runolfsson, DR Rust, R Rylko, EKG Sarkisyan, M Sasaki, C Sbarra, AD Schaile, O Schaile, F Scharf, P ScharffHansen, P Schenk, B Schmitt, M Schroder, HC SchultzCoulon, M Schulz, P Schutz, J Schwiening, WG Scott, TG Shears, BC Shen, CH ShepherdThemistocleous, P Sherwood, GP Siroli, A Sittler, A Skillman, A Skuja, AM Smith, TJ Smith, GA Snow, R Sobie, S SoldnerRembold, RW Springer, M Sproston, A Stahl, M Starks, K Stephens, J Steuerer, B Stockhausen, D Strom, F Strumia, P Szymanski, R Tafirout, H Takeda, P Taras, S Tarem, M Tecchio, N Tesch, M Thiergen, MA Thomson, E vonTorne, S Towers, M Tscheulin, E Tsur, AS Turcot, MF TurnerWatson, P Utzat, R VanKooten, G Vasseur, M Verzocchi, P Vikas, M Vincter, EH Vokurka, F Wackerle, A Wagner, CP Ward, DR Ward, JJ Ward, PM Watkins, AT Watson, NK Watson, P Weber, PS Wells, N Wermes, JS White, B Wilkens, GW Wilson, JA Wilson, T Wlodek, G Wolf, S Wotton, TR Wyatt, S Xella, S Yamashita, G Yekutieli, K Yoshimura, Zacek, V

    PHYSICS LETTERS B   377 ( 4 )   273 - 288   1996.6

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  • Search for a narrow resonance in Z(0) decays into hadrons and isolated photons Reviewed

    G Alexander, J Allison, N Altekamp, K Ametewee, KJ Anderson, S Anderson, S Arcelli, S Asai, D Axen, G Azuelos, AH Ball, E Barberio, RJ Barlow, R Bartoldus, Batley, JR, G Beaudoin, J Bechtluft, C Beeston, T Behnke, AN Bell, KW Bell, G Bella, S Bentvelsen, P Berlich, S Bethke, O Biebel, Blobel, V, IJ Bloodworth, JE Bloomer, P Bock, HM Bosch, M Boutemeur, BT Bouwens, S Braibant, P BrightThomas, RM Brown, HJ Burckhart, C Burgard, R Burgin, P Capiluppi, RK Carnegie, AA Carter, Carter, JR, CY Chang, C Charlesworth, DG Charlton, D Chrisman, SL Chu, PEL Clarke, SG Clowes, Cohen, I, JE Conboy, OC Cooke, M Cuffiani, S Dado, C Dallapiccola, GM Dallavalle, C Darling, S DeJong, LA delPozo, MS Dixit, EDCE Silva, E Duchovni, G Duckeck, IP Duerdoth, JEG Edwards, PG Estabrooks, HG Evans, M Evans, F Fabbri, P Fath, F Fiedler, M Fierro, HM Fischer, R Folman, DG Fong, M Foucher, H Fukui, A Furtjes, P Gagnon, A Gaidot, JW Gary, J Gascon, SM GasconShotkin, NI Geddes, C GeichGimbel, SW Gensler, FX Gentit, T Geralis, G Giacomelli, P Giacomelli, R Giacomelli, Gibson, V, WR Gibson, DM Gingrich, J Goldberg, MJ Goodrick, W Gorn, C Grandi, E Gross, M Gruwe, C Hajdu, GG Hanson, M Hansroul, M Hapke, CK Hargrove, PA Hart, C Hartmann, M Hauschild, CM Hawkes, R Hawkings, RJ Hemingway, G Herten, RD Heuer, MD Hildreth, JC Hill, SJ Hillier, T Hilse, PR Hobson, RJ Homer, AK Honma, D Horvath, R Howard, RE HughesJones, DE Hutchcroft, P IgoKemenes, DC Imrie, A Jawahery, PW Jeffreys, H Jeremie, M Jimack, A Joly, M Jones, RWL Jones, U Jost, P Jovanovic, J Kanzaki, D Karlen, T Kawamoto, RK Keeler, RG Kellogg, BW Kennedy, J King, J Kirk, S Kluth, T Kobayashi, M Kobel, DS Koetke, TP Kokott, S Komamiya, R Kowalewski, T Kress, P Krieger, J vonKrogh, P Kyberd, GD Lafferty, H Lafoux, R Lahmann, WP Lai, D Lanske, J Lauber, JG Layter, AM Lee, E Lefebvre, D Lellouch, J Letts, L Levinson, C Lewis, SL Lloyd, FK Loebinger, GD Long, B Lorazo, MJ Losty, J Ludwig, A Luig, A Malik, M Mannelli, S Marcellini, C Markus, AJ Martin, JP Martin, G Martinez, T Mashimo, W Matthews, P Mattig, WJ Mcdonald, J McKenna, EA Mckigney, TJ McMahon, AI McNab, F Meijers, S Menke, FS Merritt, H Mes, J Meyer, A Michelini, G Mikenberg, DJ Miller, R Mir, W Mohr, A Montanari, T Mori, M Morii, U Muller, B Nellen, B Nijjhar, R Nisius, SW ONeale, FG Oakham, F Odorici, HO Ogren, NJ Oldershaw, T Omori, MJ Oreglia, S Orito, M Palazzo, J Palinkas, FM Palmonari, JP Pansart, G Pasztor, Pater, JR, GN Patrick, MJ Pearce, S Petzold, PD Phillips, JE Pilcher, J Pinfold, DE Plane, P Poffenberger, B Poli, A Posthaus, H Przysiezniak, DL Rees, D Rigby, MG Rison, SA Robins, N Rodning, JM Roney, E Ross, AM Rossi, M Rosvick, P Routenburg, Y Rozen, K Runge, O Runolfsson, DR Rust, R Rylko, EKG Sarkisyan, M Sasaki, C Sbarra, AD Schaile, O Schaile, F Scharf, P ScharfHansen, P Schenk, B Schmitt, M Schroder, HC SchultzCoulon, M Schulz, P Schutz, J Schwiening, WG Scott, TG Shears, BC Shen, CH ShepherdThemistocleous, P Sherwood, GP Siroli, A Sittler, A Skillman, A Skuja, AM Smith, TJ Smith, GA Snow, R Sobie, S SoldnerRembold, RW Springer, M Sproston, A Stahl, M Starks, K Stephens, J Steuerer, B Stockhausen, D Strom, F Strumia, P Szymanski, R Tafirout, H Takeda, P Taras, S Tarem, M Tecchio, N Tesch, M Thiergen, MA Thomson, E vonTorne, S Towers, M Tscheulin, E Tsur, AS Turcot, MF TurnerWatson, P Utzat, R VanKooten, G Vasseur, M Verzocchi, P Vikas, M Vincter, EH Vokurka, F Wackerle, A Wagner, CP Ward, DR Ward, JJ Ward, PM Watkins, AT Watson, NK Watson, P Weber, PS Wells, N Wermes, JS White, B Wilkens, GW Wilson, JA Wilson, T Wlodek, G Wolf, S Wotton, TR Wyatt, S Xella, S Yamashita, G Yekutieli, K Yoshimura, Zacek, V

    ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS   71 ( 1 )   1 - 10   1996.6

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  • Improved measurement of the lifetime of the tau lepton

    G Alexander, J Allison, N Altekamp, K Ametewee, KJ Anderson, S Anderson, S Arcelli, S Asai, D Axen, G Azuelos, AH Ball, E Barberio, RJ Barlow, R Bartoldus, Batley, JR, G Beaudoin, J Bechtluft, C Beeston, T Behnke, AN Bell, KW Bell, G Bella, S Bentvelsen, P Berlich, S Bethke, O Biebel, Blobel, V, IJ Bloodworth, JE Bloomer, P Bock, HM Bosch, M Boutemeur, BT Bouwens, S Braibant, P BrightThomas, RM Brown, HJ Burckhart, C Burgard, R Burgin, P Capiluppi, RK Carnegie, AA Carter, Carter, JR, CY Chang, C Charlesworth, DG Charlton, D Chrisman, SL Chu, PEL Clarke, Cohen, I, JE Conboy, OC Cooke, M Cuffiani, S Dado, C Dallapiccola, GM Dallavalle, C Darling, S DeJong, LA delPozo, MS Dixit, EDE Silva, M Doucet, E Duchovni, G Duckeck, IP Duerdoth, JEG Edwards, PG Estabrooks, HG Evans, M Evans, F Fabbri, P Fath, F Fiedler, M Fierro, HM Fischer, R Folman, DG Fong, M Foucher, H Fukui, A Furtjes, P Gagnon, A Gaidot, JW Gary, J Gascon, SM GasconShotkin, NI Geddes, C GeichGimbel, SW Gensler, FX Gentit, T Geralis, G Giacomelli, P Giacomelli, R Giacomelli, Gibson, V, WR Gibson, DM Gingrich, J Goldberg, MJ Goodrick, W Gorn, C Grandi, E Gross, M Gruwe, C Hajdu, GG Hanson, M Hansroul, M Hapke, CK Hargrove, PA Hart, C Hartmann, M Hauschild, CM Hawkes, R Hawking, RJ Hemingway, G Herten, RD Heuer, MD Hildreth, JC Hill, SJ Hillier, T Hilse, PR Hobson, RJ Homer, AK Honma, D Horvath, R Howard, RE HughesJones, DE Hutchcroft, P IgoKemenes, DC Imrie, MR Ingram, A Jawahery, PW Jeffreys, H Jeremie, A Jimack, A Joly, G Jones, M Jones, RWL Jones, U Jost, P Jovanovic, J Kanzaki, D Karlen, T Kawamoto, RK Keeler, RG Kellogg, BW Kennedy, J King, J Kirk, S Kluth, T Kobayashi, M Kobel, DS Koetke, TP Kokott, S Komamiya, R Kowalewski, T Kress, P Krieger, J vonKrogh, P Kyberd, GD Lafferty, H Lafoux, R Lahmann, WP Lai, D Lanske, J Lauber, JG Layter, AM Lee, E Lefebvre, D Lellouch, J Letts, L Levinson, C Lewis, SL Lloyd, FK Loebinger, GD Long, B Lorazo, MJ Losty, J Ludwig, A Luig, A Malik, M Mannelli, S Marcellini, C Markus, AJ Martin, JP Martin, G Martinez, T Mashimo, W Matthews, P Mattig, WJ McDonald, J McKenna, EA Mckigney, TJ McMahon, AI McNab, F Meijers, S Menke, FS Merritt, H Mes, J Meyer, A Michelini, G Mikenberg, DJ Miller, R Mir, W Mohr, A Montanari, T Mori, M Morii, U Muller, B Nellen, B Nijjhar, R Nisius, SW ONeale, FG Oakham, F Odorici, HO Ogren, T Omori, MJ Oreglia, S Orito, M Palazzo, J Palinkas, JP Pansart, G Pasztor, Pater, JR, GN Patrick, MJ Pearce, S Petzold, JE Pilcher, J Pinfold, DE Plane, P Poffenberger, B Poli, A Posthaus, H Przysiezniak, DL Rees, D Rigby, MG Rison, SA Robins, N Rodning, JM Roney, A Rooke, E Ros, AM Rossi, M Rosvick, P Routenburg, Y Rozen, K Runge, O Runolfsson, DR Rust, R Rylko, EKG Sarkisyan, M Sasaki, C Sbarra, AD Schaile, O Schaile, F Scharf, P ScharffHansen, P Schenk, B Schmitt, M Schroder, HC SchultzCoulon, M Schulz, P Schutz, J Schwiening, WG Scott, TG Shears, BC Shen, CH ShepherdThemistocleous, P Sherwood, GP Siroli, A Sittler, A Skillman, A Skuja, AM Smith, TJ Smith, GA Snow, R Sobie, S SoldnerRembold, RW Springer, M Sproston, A Stahl, M Starks, K Stephens, J Steuerer, B Stockhausen, D Strom, F Strumia, P Szymanski, R Tafirout, H Takeda, P Taras, S Tarem, M Tecchio, N Tesch, M Thiergen, MA Thomson, E vonTorne, S Towers, M Tscheulin, E Tsur, AS Turcot, MF TurnerWatson, P Utzat, R VanKooten, G Vasseur, M Verzocchi, P Vikas, M Vincter, EH Vokurka, F Wackerle, A Wagner, CP Ward, DR Ward, JJ Ward, PM Watkins, AT Watson, NK Watson, P Weber, PS Wells, N Wermes, JS White, B Wilkens, GW Wilson, JA Wilson, T Wlodek, G Wolf, S Wotton, TR Wyatt, S Xella, S Yamashita, G Yekutieli, K Yoshimura, Zacek, V

    PHYSICS LETTERS B   374 ( 4 )   341 - 350   1996.5

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  • A study of four-fermion final states with high multiplicity at LEP

    G Alexander, J Allison, N Altekamp, K Ametewee, KJ Anderson, S Anderson, S Arcelli, S Asai, D Axen, G Azuelos, AH Ball, E Barberio, RJ Barlow, R Bartoldus, Batley, JR, G Beaudoin, J Bechtluft, C Beeston, T Behnke, AN Bell, KW Bell, G Bella, S Bentvelsen, P Berlich, S Bethke, O Biebel, Blobel, V, IJ Bloodworth, JE Bloomer, P Bock, HM Bosch, M Boutemeur, BT Bouwens, S Braibant, RM Brown, HJ Burckhart, C Burgard, R Burgin, P Capiluppi, RK Carnegie, AA Carter, Carter, JR, CY Chang, C Charlesworth, DG Charlton, D Chrisman, SL Chu, PEL Clarke, Cohen, I, JE Conboy, OC Cooke, M Cuffiani, S Dado, C Dallapiccola, GM Dallavalle, C Darling, S DeJong, LA delPozo, MS Dixit, EDE Silva, M Doucet, E Duchovni, G Duckeck, IP Duerdoth, JEG Edwards, PG Estabrooks, HG Evans, M Evans, F Fabbri, P Fath, F Fiedler, M Fierro, HM Fischer, R Folman, DG Fong, M Foucher, H Fukui, A Furtjes, P Gagnon, A Gaidot, JW Gary, J Gascon, SM GasconShotkin, NI Geddes, C GeichGimbel, SW Gensler, FX Gentit, T Geralis, G Giacomelli, P Giacomelli, R Giacomelli, Gibson, V, WR Gibson, DM Gingrich, J Goldberg, MJ Goodrick, W Gorn, C Grandi, E Gross, M Gruwe, C Hajdu, GG Hanson, M Hansroul, M Hapke, CK Hargrove, PA Hart, C Hartmann, M Hauschild, CM Hawkes, R Hawkings, RJ Hemingway, G Herten, RD Heuer, MD Hildreth, JC Hill, SJ Hillier, T Hilse, PR Hobson, RJ Homer, AK Honma, D Horvath, R Howard, RE HughJones, DE Hutchcroft, P IgoKemenes, DC Imrie, MR Ingram, A Jawahery, PW Jeffreys, H Jeremie, M Jimack, A Joly, G Jones, M Jones, RWL Jones, U Jost, P Jovanovic, J Kanzaki, D Karlen, T Kawamoto, KR Keeler, RG Kellogg, BW Kennedy, J King, J Kirk, S Kluth, T Kobayashi, M Kobel, DS Koetke, TP Kokott, S Komamiya, R Kowalewski, T Kress, P Krieger, J vonKrogh, P Kyberd, GD Lafferty, H Lafoux, R Lahmann, WP Lai, D Lanske, J Lauber, JG Layter, AM Lee, E Lefebvre, D Lellouch, J Letts, L Levinson, C Lewis, SL Lloyd, FK Loebinger, GD Long, B Lorazo, MJ Losty, J Ludwig, A Luig, A Malik, N Mannelli, S Marcellini, C Markus, AJ Martin, JP Martin, G Martinez, T Mashimo, W Matthews, P Mattig, WJ McDonald, J McKenna, EA Mckigney, TJ McMahon, AI NcNab, F Meijers, S Menke, FS Merritt, H Mes, J Meyer, A Michelini, G Mikenberg, DJ Miller, R Mir, W Mohr, A Montanari, T Mori, M Morii, U Muller, B Nellen, B Nijjhar, R Nisius, SW ONeale, FG Oakham, F Odorici, HO Ogren, T Omori, MJ Oreglia, S Orito, M Palazzo, J Palinkas, JP Pansart, G Pasztor, Pater, JR, GN Patrick, MJ Pearce, S Petzold, JE Pilcher, J Pinfold, DE Plane, P Poffenberger, B Poli, A Posthaus, H Przysiezniak, DL Rees, D Rigby, MG Rison, SA Robins, N Rodning, JM Roney, A Rooke, E Ros, AM Rossi, M Rosvick, P Routenburg, Y Rozen, K Runge, O Runolfsson, DR Rust, R Rylko, EKG Sarkisyan, M Sasaki, C Sbarra, AD Schaile, O Schaile, F Scharf, P ScharffHansen, P Schenk, B Schmitt, M Schroder, HC SchultzCoulon, M Schulz, P Schutz, J Schwiening, WG Scott, TG Shears, BC Shen, CH ShepherdThemistocleous, P Sherwood, GP Siroli, A Sittler, A Skillman, A Skuja, AM Smith, TJ Smith, GA Snow, R Sobie, S SoldnerRembold, RW Springer, M Sproston, A Stahl, M Starks, K Stephens, J Steuerer, B Stockhausen, D Strom, F Strumia, P Szymanski, R Tafirout, H Takeda, P Taras, S Tarem, M Tecchio, N Tesch, M Thiergen, MA Thomson, E vonTorne, S Towers, M Tscheulin, E Tsur, AS Turcot, MF TurnerWatson, P Utzat, R VanKooten, G Vasseur, M Verzocchi, P Vikas, M Vincter, EH Vokurka, F Wackerle, A Wagner, CP Ward, DR Ward, JJ Ward, PM Watkins, AT Watson, NK Watson, P Weber, PS Wells, N Wermes, JS White, B Wilkens, GW Wilson, JA Wilson, T Wlodek, G Wolf, S Wotton, TR Wyatt, S Xella, S Yamashita, G Yekutieli, K Yoshimura, Zacek, V

    PHYSICS LETTERS B   376 ( 4 )   315 - 328   1996.5

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  • Measurement of cross-sections and asymmetries in e(+)e(-) collisions at 130-140 GeV centre-of-mass energy

    G Alexander, J Allison, N Altekamp, K Ametewee, KJ Anderson, S Anderson, S Arcelli, S Asai, D Axen, G Azuelos, AH Ball, E Barberio, RJ Barlow, R Bartoldus, Batley, JR, G Beaudoin, J Bechtluft, C Beeston, T Behnke, AN Bell, KW Bell, G Bella, S Bentvelsen, P Berlich, S Bethke, O Biebel, Blobel, V, IJ Bloodworth, JE Bloomer, P Bock, HM Bosch, M Boutemeur, BT Bouwens, S Braibant, RM Brown, HJ Burckhart, C Burgard, R Burgin, P Capiluppi, RK Carnegie, AA Carter, Carter, JR, CY Chang, C Charlesworth, DG Charlton, D Chrisman, SL Chu, PEL Clarke, Cohen, I, JE Conboy, OC Cooke, M Cuffiani, S Dado, C Dallapiccola, GM Dallavalle, C Darling, S DeJong, LA delPozo, MS Dixit, EDC Silva, M Doucet, E Duchovni, G Duckeck, IP Duerdorth, JEG Edwards, PG Estabrooks, HG Evans, M Evans, F Fabbri, P Fath, F Fiedler, M Fierro, HM Fischer, R Folman, DG Fong, M Foucher, H Fukui, A Furtjes, P Gagnon, A Gaidot, JW Gary, J Gascon, SM GasconShotkin, NI Geddes, C GeichGimbel, SW Gensler, FX Gentit, T Geralis, G Giacomelli, P Giacomelli, R Giacomelli, Gibson, V, WR Gibson, DM Gingrich, J Goldberg, MJ Goodrick, W Gorn, C Grandi, E Gross, M Gruwe, C Hajdu, GG Hanson, M Hansroul, M Hapke, CK Hargrove, PA Hart, C Hartmann, M Hauschild, CM Hawkes, R Hawkings, RJ Hemingway, G Herten, RD Heuer, MD Hildreth, JC Hill, SJ Hillier, T Hilse, PR Hobson, RH Homer, AK Honma, D Horvath, R Howard, RE HughesJones, DE Hutchcroft, P IgoKemenes, DC Imrie, MR Ingram, A Jawahery, PW Jeffreys, H Jeremie, M Jimack, A Joly, G Jones, M Jones, RWL Jones, U Jost, P Jovanovic, J Kanzaki, D Karlen, T Kawamoto, RK Keeler, RG Kellogg, BW Kennedy, J King, J Kirk, S Kluth, T Kobayashi, M Kobel, DS Koetke, TP Kokott, S Komamiya, R Kowalewski, T Kress, P Krieger, J vonKrogh, P Kyberd, GD Lafferty, H Lafoux, R Lahmann, WP Lai, D Lanske, J Lauber, JG Layter, AM Lee, E Lefebvre, D Lellouch, J Letts, L Levinson, C Lewis, SL Lloyd, FK Loebinger, GD Long, B Lorazo, MJ Losty, J Ludwig, A Luig, A Malik, M Mannelli, S Marcellini, C Markus, AJ Martin, JP Martin, G Martinez, T Mashimo, W Matthews, P Mattig, WJ McDonald, J McKenna, EA McKigney, TJ McMahon, AI McNab, F Meijers, S Menke, FS Merritt, H Mes, J Meyer, A Michelini, G Mikenberg, DJ Miller, R Mir, W Mohr, A Montanari, T Mori, M Morii, U Muller, B Nellen, B Nijjhar, R Nisius, SW ONeale, FG Oakham, F Odorici, HO Ogren, T Omori, MJ Oreglia, S Orito, M Palazzo, J Palinkas, JP Pansart, G Pasztor, Pater, JR, GN Patrick, MJ Pearce, S Petzold, JE Pilcher, J Pinfold, DE Plane, P Poffenberger, B Poli, A Posthaus, H Przysiezniak, DL Rees, D Rigby, MG Rison, SA Robins, N Rodning, JM Roney, A Rooke, E Ros, AM Rossi, M Rosvick, P Routenburg, Y Rozen, K Runge, O Runolfsson, DR Rust, R Rylko, EKG Sarkisyan, M Sasaki, C Sbarra, AD Schaile, O Schaile, F Scharf, P ScharffHansen, P Schenk, B Schmitt, M Schroder, HC SchultzCoulon, M Schulz, P Schutz, J Schwiening, WG Scott, TG Shears, BC Shen, CH ShepherdThemistocleous, P Sherwood, GP Siroli, A Sittler, SA Skillman, A Skuja, AM Smith, TJ Smith, GA Snow, R Sobie, S SoldnerRembold, RW Springer, M Sproston, A Stahl, M Starks, K Stephens, J Steuerer, B Stockhausen, D Strom, F Strumia, P Szymanski, R Tafirout, H Takeda, P Taras, S Tarem, M Tecchio, N Tesch, M Thiergen, MA Thomson, E vonTorne, S Towers, M Tscheulin, E Tsur, AS Turcot, MF TurnerWatson, P Utzat, R VanKooten, G Vasseur, M Verzocchi, P Vikas, M Vincter, EH Vokurka, F Wackerle, A Wagner, CP Ward, DR Ward, JJ Ward, PM Watkins, AT Watson, NK Watson, P Weber, PS Wells, N Wermes, JS White, B Wilkens, GW Wilson, JA Wilson, T Wlodek, G Wolf, S Wotton, TR Wyatt, S Xella, S Yamashita, G Yekutieli, K Yoshimura, Zacek, V

    PHYSICS LETTERS B   376 ( 1-3 )   232 - 244   1996.5

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  • Searches for new physics

    GF Giudice, ML Mangano, G Ridolfi, R Ruckl, S Ambrosanio, S Asai, G Azuelos, H Baer, A Bartl, W Bernreuther, M Besancon, G Bhattacharyya, M Brhlik, LM Bryant, G Burkart, M Carena, R Casalbuoni, P Chankowski, D Choudhury, A Culatti, A Deandrea, W deBoer, G Carlino, S DeCurtis, G Degrassi, C Dionisi, A Djouadi, D Dominici, H Dreiner, H Eberl, L Favart, M Felcini, F Feruglio, H Fraas, F Franke, R Gatto, S Giagu, M Grazzini, JF Grivaz, JJ Hernandez, S Katsanevas, S Komamiya, S Kraml, P LeCoultre, S Lola, W Majerotto, A Masiero, T Medcalf, B Mele, G Montagna, R Munroe, S Navas, F NessiTebaldi, O Nicrosini, S Orito, F Piccinini, S Pokorski, W Porod, P Rebecchi, F Richard, S Rigolin, S RosierLees, S Shevchenko, Shoutko, V, A Shvorob, L Silvestrini, A Sopczak, R Tafirout, Tata, X, J Toth, A Trombini, C VanderVelde, R vanKooten, A Vicini, JH vonWimmerspergToeller, C Wagner, K Yoshimura

    PHYSICS AT LEP2, VOL. 1   96 ( 1 )   463 - 524   1996

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  • STATUS AND RESULT FROM BESS

    K ANRAKU, R GOLDEN, M IMORI, S INABA, B KIMBELL, N KIMURA, Y MAKIDA, H MATSUMOTO, H MATSUNAGA, J MITCHELL, M MOTOKI, J NISHIMURA, M NOZAKI, S ORITO, J ORMES, D RIGHTER, T SAEKI, R STREITMATTER, J SUZUKI, K TANAKA, UEDA, I, N YAJIMA, T YAMAGAMI, A YAMAMOTO, T YOSHIDA, K YOSHIMURA

    SCIENTIFIC BALLOONING   17 ( 9 )   101 - 110   1996

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    DOI： 10.1016/0273-1177(95)00684-7

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  • OBSERVATION OF COSMIC-RAY ANTIPROTONS AT ENERGIES BELOW 500 MEV

    K YOSHIMURA, S ORITO, UEDA, I, K ANRAKU, R GOLDEN, M IMORI, S INABA, B KIMBELL, N KIMURA, Y MAKIDA, H MATSUMOTO, H MATSUNAGA, J MITCHELL, M MOTOKI, J NISHIMURA, M NOZAKI, J ORMES, T SAEKI, R STREITMATTER, J SUZUKI, K TANAKA, N YAJIMA, T YAMAGAMI, A YAMAMOTO, T YOSHIDA

    PHYSICAL REVIEW LETTERS   75 ( 21 )   3792 - 3795   1995.11

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    DOI： 10.1103/PhysRevLett.75.3792

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  • BALLOONING OF A THIN SUPERCONDUCTING SOLENOID FOR PARTICLE ASTROPHYSICS

    Y MAKIDA, K ANRAKU, J SUZUKI, A YAMAMOTO, M IMORI, T YOSHIDA, K YOSHIMURA, UEDA, I, T SAEKI, H MATSUNAGA, S ORITO, M MOTOKI, M NOZAKI, N YAJIMA, DL RIGHTER

    IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY   5 ( 2 )   658 - 661   1995.6

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    DOI： 10.1109/77.402634

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  • Performance of BESS detector

    M Nozaki, R Streitmatter, A Yamamoto, T Yoshida, K Anraku, R Golden, M Imori, S Inaba, B Kimbell, M Kimura, Y Makida, H Matsumoto, H Matsunaga, J Mitchell, M Motoki, J Nishimura, S Orito, J Ormes, D Righter, T Saeki, J Suzuki, K Tanaka, N Yajima, T Yamagami, K Yoshimura

    24TH INTERNATIONAL COSMIC RAY CONFERENCE, VOL 3   579 - 582   1995

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  • Measurement of cosmic ray H and He spectra in a Balloon Borne Experiment with a Superconducting Solenoid Spectrometer

    ES Seo, K Yoshimura, T Yoshida, A Yamamoto, K Anraku, R Golden, M Imori, S Inaba, B Kimbell, N Kimura, Y Makida, H Matsumoto, H Matsunaga, J Mitchell, M Motoki, J Nishimura, M Nozaki, S Orito, J Ormes, T Saeki, R Streitmatter, J Suzuki, K Tanaka, Ueda, I, N Yajima, T Yamagami

    24TH INTERNATIONAL COSMIC RAY CONFERENCE, VOL 2   648 - 651   1995

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  • Observation of antiprotons at low energies by BESS detector

    S Orito, K Yoshimura, Ueda, I, K Anraku, R Golden, M Imori, S Inabe, B Kimbell, N Kimura, Y Makida, H Matsumoto, H Matsunaga, J Mitchell, M Motoki, J Nishimura, M Nozaki, J Ormes, T Saeki, R Streitmatter, J Suzuki, K Tanaka, N Yajima, T Yamagami, A Yamamoto, T Yoshida

    24TH INTERNATIONAL COSMIC RAY CONFERENCE, VOL 3   76 - 79   1995

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  • A REMOTE CONSOLE SYSTEM FOR BALLOON-BORNE EXPERIMENTS

    M IMORI, K YOSHIMURA, UEDA, I, T YOSHIDA, K ANRAKU, S INABA, T SAEKI, H HONDA, H MATSUNAGA, M MOTOKI, M NOZAKI, N TAKIMI, T YAMAGAMI

    IEEE TRANSACTIONS ON NUCLEAR SCIENCE   40 ( 4 )   913 - 916   1993.8

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    DOI： 10.1109/23.256683

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  • SEARCHING FOR PRIMORDIAL ANTIMATTER AT DISTANCES OF 30-MPC TO 300-MPC USING A BALLOON BORNE EXPERIMENT WITH A SUPERCONDUCTING SOLENOIDAL SPECTROMETER (BESS)

    K ANRAKU, RL GOLDEN, Y HIGASHI, M IMORI, S INABA, N KIMURA, Y MAKIDA, H MATSUMOTO, H MATSUNAGA, J MITCHELL, M MOTOKI, NISHIMURA, M NOZAKI, S ORITO, JF ORMES, D RIGHTER, T SAEKI, RE STREITMATTER, J SUZUKI, N TAKIMI, K TANAKA, T UEDA, N YAJIMA, T YAMAGAMI, A YAMAMOTO, T YOSHIDA, K YOSHIMURA

    23RD INTERNATIONAL COSMIC RAY CONFERENCE, VOL 2   156 - 159   1993

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  • REAL-TIME DATA PROCESSES IN A BALLOON-BORNE APPARATUS Reviewed

    M IMORI, K ANRAKU, S INABA, UEDA, I, T SAEKI, T HAGA, T TSUNODA, M NOZAKI, T YAMAGAMI, T YOSHIDA, K YOSHIMURA

    IEEE TRANSACTIONS ON NUCLEAR SCIENCE   39 ( 5 )   1389 - 1393   1992.10

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    DOI： 10.1109/23.173212

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  • A REMOTE CONSOLE SYSTEM FOR BALLOON-BORNE EXPERIMENTS

    M IMORI, K YOSHIMURA, UEDA, I, T YOSHIDA, K ANRAKU, S INABA, T SAEKI, H HONDA, H MATSUNAGA, M MOTOKI, M NOZAKI, N TAKIMI, T YAMAGAMI

    CONFERENCE RECORD OF THE 1992 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE, VOLS 1 AND 2   508 - 510   1992

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  • SEARCH FOR ANTIPARTICLES OF COSMIC ORIGIN WITH A SUPERCONDUCTING SPECTROMETER Reviewed

    K ANRAKU, T HAGA, M IMORI, M NOZAKI, S ORITO, K SHIMAMURA, T TSUNODA, T YOSHIDA, K YOSHIMURA, Y AJIMA, H IKEDA, S INABA, T HARUYAMA, Y HIGASHI, Y MAKIDA, J SUZUKI, A YAMAMOTO, J NISHIMURA, T YAMAGAMI, R GOLDEN, B KIMBELL

    SCIENTIFIC BALLOONING   13   169 - 172   1992

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  • REAL-TIME DATA PROCESSES IN A BALLOON-BORNE APPARATUS

    M IMORI, K ANRAKU, S INABA, UEDA, I, T SAEKI, T HAGA, T TSUNODA, M NOZAKI, T YAMAGAMI, T YOSHIDA, K YOSHIMURA

    CONFERENCE RECORD OF THE 1991 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE, VOLS 1-3   1178 - 1182   1991

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    DOI： 10.1109/NSSMIC.1991.259109

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MISC

  • Development of the ionization laser for J-PARC muon g-2 experiment

    上岡修星, 吉田光宏, 石田勝彦, 三部勉, 原秀明, 平木貴宏, 今井康貴, 増田孝彦, 宮本祐樹, 植竹智, 山基真佑, 吉村浩司, 鈴木一仁

    日本物理学会講演概要集(CD-ROM)   79 ( 1 )   2024

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  • Development of apparatus for laser excitation of Th-229 isomer

    大懸遼一郎, BEEKS Kjeld, BARTOKOS Michael, 福永優太, GUAN M., 平木貴宏, 増田孝彦, 宮本祐樹, 岡井晃一, 清水航太朗, SHADEN Fabian, SCHUMM Thorsten, 笹尾登, 高取沙悠理, 植竹智, 吉村太彦, 吉見彰洋, 吉村浩司

    日本物理学会講演概要集(CD-ROM)   79 ( 1 )   2024

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  • Search for vacuum-ultraviolet photon by deexcitation of the nuclear isomeric state of thorium-229

    平木貴宏, BEEKS Kjeld, 藤本弘之, 福永優太, GUAN M., 羽場宏光, 笠松良崇, 北尾真司, 小無健司, 増田孝彦, 永澤延元, 岡井晃一, 笹尾登, SCHADEN Fabian, SCHUMM Thorsten, 瀬戸誠, 重河優大, 高取沙悠理, 玉作賢治, 植竹智, 渡部司, 渡部信, 山口敦史, 安田勇輝, 依田芳卓, 吉見彰洋, 吉村浩司, 吉村太彦

    日本物理学会講演概要集(CD-ROM)   78 ( 1 )   2023

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  • Development of nuclear resonant scattering target for thorium-229 isomer level search

    福永優太, BEEKS Kjeld, 藤本弘之, 平木貴宏, GUAN M., 羽場宏光, 笠松良崇, 北尾真司, 小無健司, 増田孝彦, 永澤延元, 岡井晃一, 笹尾登, SCHADEN Fabian, SCHUMM THorsten, 瀬戸誠, 重河優大, 高取沙悠理, 玉作賢治, 植竹智, 渡部司, 渡部信, 山口敦史, 安田勇輝, 依田芳卓, 吉見彰洋, 吉村浩司, 吉村太彦

    日本物理学会講演概要集(CD-ROM)   78 ( 1 )   2023

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  • Characterization of Thorium-229 doped crystals for the solid-state nuclear clock using XAFS

    高取沙悠理, BEEKS Kjeld, 藤本弘之, 福永優太, GUAN M., 羽場宏光, 平木貴宏, 笠松良崇, 北尾真司, 小無健司, 増田孝彦, 永澤延元, 大懸遼一郎, 岡井晃一, 笹尾登, SCHADEN Fabian, SCHUMM Thorsten, 瀬戸誠, 重河優大, 清水航太朗, 玉作賢治, 植竹智, 渡部司, 渡部信, 山口敦史, 山本伶, 依田芳卓, 吉見彰洋, 吉村浩司, 吉村太彦

    日本物理学会講演概要集(CD-ROM)   78 ( 2 )   2023

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  • Development of the ionization laser for J-PARC muon g-2 experiment

    上岡修星, 吉田光宏, 三部勉, ZHANG Ce, 原秀明, 平木貴宏, 今井康貴, 増田孝彦, 宮本祐樹, 植竹智, 山基真佑, 吉村浩司, 鈴木一仁, 石田勝彦

    日本物理学会講演概要集(CD-ROM)   78 ( 1 )   2023

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  • Search for vacuum-ultraviolet photon by de-excitation from the isomeric state of thorium 229

    岡井晃一, BEEKS Kjeld, 藤本弘之, 福永優太, GUAN M., 羽場宏光, 原秀明, 平木貴宏, 稲垣新, 小早川大貴, 笠松良崇, 北尾真司, 小無健司, 増田孝彦, 宮本祐樹, 笹尾登, SCHUMM Thorsten, 瀬戸誠, 重河優大, 高取沙悠理, 玉作賢治, 植竹智, 渡部司, 渡部信, 山口敦史, 安田勇輝, 依田芳卓, 吉見彰洋, 吉村浩司, 吉村太彦

    日本物理学会講演概要集(CD-ROM)   77 ( 2 )   2022

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  • Development of the ionization laser for J-PARC muon g-2 experiment

    上岡修星, 吉田光宏, 三部勉, ZHANG Ce, 原秀明, 平木貴宏, 今井康貴, 増田孝彦, 宮本祐樹, 植竹智, 山基真佑, 吉村浩司, 鈴木一仁, 石田勝彦

    日本物理学会講演概要集(CD-ROM)   76 ( 2 )   2021

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  • Experimental status of searching for vacuum ultraviolet light from the 229Th isomeric state

    平木貴宏, BEEKS Kjeld, 藤枝亮, 羽場宏光, 原秀明, 海野弘之, 笠松良崇, 北尾真司, 小無健司, 増田孝彦, 宮本祐樹, 岡井晃一, 笹尾登, SCHUMM Thorsten, 瀬戸誠, 重河優大, STELLMER Simon, 玉作賢治, 植竹智, 渡部信, 渡部司, 山口敦史, 安田勇輝, 依田芳卓, 吉見彰洋, 吉村浩司, 吉村太彦

    日本物理学会講演概要集(CD-ROM)   75 ( 2 )   2020

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  • Search for VUV signal from isomer level of Th-229

    海野弘行, 羽場宏光, 原秀明, 平木貴宏, 藤枝亮, 藤本弘之, 笠松良崇, 北尾真司, 小無健司, 増田孝彦, 宮本祐樹, 岡井晃一, 笹尾登, BEEKS Kjeld, SCHUMM Thorsten, 瀬戸誠, 重河優大, STELLMER Simon, 玉作賢治, 植竹智, 渡部信, 渡部司, 山口敦史, 安田勇輝, 依田芳卓, 吉見彰洋, 吉村浩司, 吉村太彦

    日本物理学会講演概要集(CD-ROM)   75 ( 1 )   2020

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  • Half-life determination of nuclear excited states of 229Th by the α-γ coincidence measurement of 233U

    重河優大, 山口敦史, 鈴木健太, 羽場宏光, 平木貴宏, 菊永英寿, 西村俊二, 笹尾登, 吉見彰洋, 吉村浩司

    日本放射化学会討論会(Web)   64th   2020

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  • Research and development of trigger system for Asura / NTA experiment

    Aoki T., Binder P., Browder T. E., Fukasaku Y., Golden J., Hamilton J., Kifune T., Kimura T., Kori K., Kuze H., Learned J., Mashiyama H., Matsuno S., Oshima H., Ogawa S., Doetinchem P., Sasaki M., Shibuya H., Sugiyama N., Nagasawa R., Tanaka M., Yokokawa M., Yoshimura K., Watanabe Y., Halzen F., Mussa R., Hsiung Y. B., Wang M. -Z., Lin G. -L., Haino S., Huang H. A.

    Meeting Abstracts of the Physical Society of Japan   75.1   497 - 497   2020

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    DOI： 10.11316/jpsgaiyo.75.1.0_497

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  • Development of optical flash observation data analysis tool at Ashra-1

    Aoki T., Binder P., Browder T. E., Fukasaku Y., Golden J., Hamilton J., Kifune T., Kimura T., Kori K., Kuze H., Learned J., Mashiyama H., Matsuno S., Oshima H., Ogawa S., Doetinchem P., Sasaki M., Shibuya H., Sugiyama N., Nagasawa R., Tanaka M., Yokogawa M., Yoshimura K., Watanabe Y., Halzen F., Mussa R., Hsiung Y. B., Wang M. -Z., Lin G. -L., Haino S., Huang H. A.

    Meeting Abstracts of the Physical Society of Japan   75.1   498 - 498   2020

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    DOI： 10.11316/jpsgaiyo.75.1.0_498

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  • 核共鳴散乱を用いたトリウム229アイソマー準位への人工的遷移

    海野弘行, 羽場宏光, 原秀明, 平木貴宏, 藤枝亮, 藤本弘之, 鈴木健太, 笠松良崇, 北尾真司, 小無健司, 増田孝彦, 宮本祐樹, 岡井晃一, 笹尾登, 佐藤帯子, SCHUMM Thorsten, 瀬戸誠, 重河優大, STELLMER Simon, 玉作賢治, 植竹智, 渡部信, 渡部司, 山口敦史, 安田勇輝, 依田芳卓, 吉見彰洋, 吉村浩司, 吉村太彦

    日本物理学会講演概要集(CD-ROM)   74 ( 1 )   2019

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  • トリウム229の原子核時計遷移分光

    鈴木健太, 羽場宏光, 原秀明, 平木貴宏, 藤枝亮, 藤本弘之, 海野弘行, 笠松良崇, 北尾真司, 小無健司, 増田孝彦, 宮本祐樹, 岡井晃一, 笹尾登, 佐藤帯子, SCHUMM Thorsten, 瀬戸誠, 重河優大, STELLMER Simon, 玉作賢治, 植竹智, 渡部信, 渡部司, 山口敦史, 安田勇輝, 依田芳卓, 吉見彰洋, 吉村浩司, 吉村太彦

    日本物理学会講演概要集(CD-ROM)   74 ( 1 )   2019

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  • A status of the non destructive measurement by negative muons for archeology and its prospect

    Miyake Y., Tampo M., Takeshita S., Shimomura K., Doiuti S., Hashimoto A., Umegaki I., Saito T., Ueno Y., Matsumoto N., Yamamoto K., Yoshimura K., Akimitsu J., Kubo K.

    Meeting Abstracts of the Physical Society of Japan   74 ( 1 )   2590 - 2590   2019

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    DOI： 10.11316/jpsgaiyo.74.1.0_2590

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  • 18pAB-2 Search for Muon-electron Conversion in Nuclear Field: Preparation Status (4)

    Yamamoto K, Aoki M, Bryman D, Ikegami M, Irie Y, Ito S, Kawamura N, Kinsho M, Kobayashi H, Makimura S, Matsumoto H, Meigo S, Mibe T, Mihara S, Miyake Y, Nagao D, Nakatsugawa Y, Natori H, Nishiguchi H, Numao T, Ohomori C, Ritt S, Saha P.K, Saito N, Seiya Y, Shimomura K, Strasser P, Takezaki Y, Teshima N, Furuya Y, Thong N.D, Truong N.M, Yamamoto K, Yoshii M, Yoshimura K

    Meeting Abstracts of the Physical Society of Japan   70 ( 0 )   2512 - 2512   2015

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    DOI： 10.11316/jpsgaiyo.70.2.0_2512

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  • 19aSJ-7 Demonstration of macro-coherent amplification by observing a coherent two-photon emission from hydrogen molecules

    Uetake Satoshi, Hara Hideaki, Katsuragawa Masayuki, Kuma Susumu, Masuda Takahiko, Miyamoto Yuki, Nakano Itsuo, Ohae Chiaki, Sasao Noboru, Tanaka Minoru, Tsutsumi Kosuke, Yoshimi Akihiro, Yoshimura Koji, Yoshimura Motohiko

    Meeting abstracts of the Physical Society of Japan   69 ( 2 )   22 - 22   2014.8

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  • 9pAW-11 Coherent two-photon emission from the vibrational excited states of hydrogen molecules I

    Miyamoto Yuki, Hara Hideaki, Katsuragawa Masayuki, Kuma Susumu, Masuda Takahiko, Nakano Itsuo, Ohae Chiaki, Sasao Noboru, Tanaka Minoru, Tsutumi Kousuke, Uetake Satoshi, Yoshimi Akihiro, Yoshimura Koji, Yoshimura Motohiko

    Meeting abstracts of the Physical Society of Japan   69 ( 2 )   92 - 92   2014.8

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  • 9pAW-12 Coherent two photon emission from the vibrational excited state of hydrogen molecules II

    Hara Hideaki, Katsuragawa Masayuki, Kuma Susumu, Masuda Takahiko, Miyamoto Yuki, Nakano Itsuo, Ohae Chiaki, Sasao Noboru, Tanaka Minoru, Tsutsumi Kousuke, Uetake Satoshi, Yoshimi Akihiro, Yoshimura Koji, Yoshimura Motohiko

    Meeting abstracts of the Physical Society of Japan   69 ( 2 )   93 - 93   2014.8

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  • Spectroscopy for production of macro-coherence in metastable Xe

    Yoshimi A., Sasao N., Uetake S., Kuma S., Nakajima K., Ohae C., Miyamoto Y., Kawaguchi K., Tsutsumi Y., Tang J., Fukumi A., Tanaka M., Nakano I., Wakabayashi T., Yoshimura K., Yoshimura M.

    Meeting abstracts of the Physical Society of Japan   68 ( 2 )   16 - 16   2013.8

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  • J-PARCでのミューオン電子転換探索実験(COMET実験)における電磁カロリメータの開発研究

    大石航, 五十嵐洋一, 上野一樹, 川越清以, 佐藤朗, 齊藤直人, 東城順治, 豊田晃久, 西口創, 深尾祥紀, 松本侑樹, 三原智, 三部勉, 吉岡瑞樹, 吉村浩司, GRIGORIEV Dmitry, KUZMENKO Anastasiya, VELICHEVA Elena, VLADIMIR Kalinnikov

    日本物理学会講演概要集   68 ( 1 )   2013

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  • J-PARCでのミューオン電子転換探索実験(COMET実験)における電磁カロリメータの開発研究

    大石航, 五十嵐洋一, 上野一樹, 川越清以, 佐藤朗, 齊藤直人, 東城順治, 豊田晃久, 中居勇樹, 西口創, 深尾祥紀, 松本侑樹, 三原智, 三部勉, 吉岡瑞樹, 吉村浩司, GRIGORIEV Dmitry, KUZMENKO Anastasiya, VELICHEVA Elena, VLADIMIR Kalinnikov

    日本物理学会講演概要集   68 ( 2 )   2013

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  • Cosmic-ray observation by the second Antarctic long duration balloon flight-BESS-Polar II

    吉村浩司, 安部航, 折戸玲子, 坂井賢一, 篠田遼子, 鈴木純一, 田中賢一, 谷口敬, 西村純, 野崎光昭, 灰野禎一, 長谷川雅也, 福家英之, 堀越篤, 槙田康博, 松川陽介, 松田晋弥, 山上隆正, 山本明, 吉田哲也, MITCHELL John W., HAMS Thomas, KIM Ki-Chun, LEE Moohyung, ORMES Jonathan F., SEBASTIAN Frank San, SASAKI Makoto, SEO Eun-Suk, STREITMATTER Robert E., THAKUR Neeharika

    宇宙航空研究開発機構研究開発報告 JAXA-RR-   ( 09-007 )   2010

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  • The 2007 BESS-Polar Scientific Flight in Antarctica

    HASEGAWA Masaya, HORIKOSHI Atsushi, MATSUDA Shinya, MAKIDA Yasuhiro, SUZUKI Junichi, TANAKA Kenichi, YAMAMOTO Akira, YOSHIMURA Koji, NISHIMURA Jun, SAKAI Kenichi, SHINODA Ryoko, ORITO Reiko, MATSUKAWA Yosuke, KUSUMOTO Akira, FUKE Hideyuki, YAMAGAMI Takamasa, YOSHIDA Tetsuya, HAMS Thomas, MITCHELL John W., SASAKI Makoto, STREITMATTER Robert E., KIM Ki-chun, LEE Moo-hyon, SEO Eun-suk, ORMES Jonathan F., THAKUR Neeharika

    Transactions of the Japan Society for Aeronautical and Space Sciences, Space Technology Japan (Web)   7 ( ists26 )   2009

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  • J-PARC将来計画 : ミューオン-電子転換探索実験COMET&PRISM

    吉村 浩司

    超電導応用研究会シンポジウム講演論文集   14   "4 - 5-1"-"4-5-12"   2008.3

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  • BESS-Polar: Sensitive Search for Primordial Antiparticle using A Superconducting Spectrometer with Long Duration Balloon Flights in Antarctica

    山本明, 安部航, 泉康介, 板崎輝, 大宮英紀, 折戸玲子, 熊沢輝之, 坂井賢一, 志風義明, 篠田遼子, 鈴木純一, 高杉佳幸, 竹内一真, 谷崎圭裕, 田中賢一, 谷口敬, 西村純, 野崎光昭, 灰野禎一, 長谷川雅也, 福家英之, 堀越篤, 槙田康博, 松川陽介, 松田晋弥, 松本賢治, 山上隆正, 大和一洋, 吉田哲也, 吉村浩司, MITCHELL John W., HAMS Thomas, KIM Ki-Chun, LEE Moohyung, MOISEEV Alexander A., MYERS Zachary D., ORMES Jonathan F., SASAKI Makoto, SEO Eun-Suk, STREITMATTER Robert E.

    宇宙航空研究開発機構研究開発報告 JAXA-RR-   ( 07-009 )   2008

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  • 21pZB-1 Development of Hermetic Housing for PMTs for BESS-Polar II Experiment

    Matsukawa Yosuke, Hams T., Kim K.C., Lee M.H., Mitchell J.W., Moiseev A.A., Ormes J.F., Seo E.S., Streitmatter R.E., Thakur N.

    Meeting abstracts of the Physical Society of Japan   62 ( 2 )   20 - 20   2007.8

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  • 22pZK-10 Status of the BESS Polar-II Experiment

    Hasegawa Masaya, Hams T., Kim K.C., Lee M.H., Mitchell J.W., Moiseev A.A., Ormes J.F., Seo E.S., Streitmatter R.E., Thakur N.

    Meeting abstracts of the Physical Society of Japan   62 ( 2 )   112 - 112   2007.8

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  • Performance of Middle TOF counter for BESS-Polar in Beam test

    Shikaze Yoshiaki, Itazaki Akira, Amimoto Ken, Oikawa Maiko, Nozaki Mitsuaki, Matuda Shinya, Yoshimura Koji, Yoshida Tetsuya

    Meeting abstracts of the Physical Society of Japan   58 ( 2 )   20 - 20   2003.8

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  • Technical Flight of Solar Battery System for BESS-Polar Experiment

    福家英之, 野崎光昭, 安部航, 池田伸穂, 大宮英紀, 斎藤芳隆, 並木道義, 松本賢治, 吉村浩司

    宇宙科学研究所報告 特集   ( 45 )   2003

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  • Measurements of Antiproton Spectrum with BESS

    ASAOKA Yoichi, ABE Koh, ANRAKU Kazuaki, IZUMI Kosuke, IMORI Masatoshi, UEDA Ikuo, ORITO Shuji, SAEKI Takayuki, SASAKI Makoto, SANUKI Tomoyuki, SHIKAZE Yoshiaki, SUZUKI Junichi, SONODA Tomohiro, TANAKA Kenichi, TANIZAKI Keisuke, NOZAKI Mitsuaki, HAINO Sadakazu, FUKE Hideyuki, FUJIKAWA Motoharu, NISHIMURA Jun, MATSUI Nagataka, MAENO Tadashi, MAKIDA Yasuhiro, MATSUKAWA Takeo, MATSUDA Shinya, MATSUNAGA Hiroyuki, MATSUMOTO Hiroshi, MITSUI Tadao, MOTOKI Masakazu, YAJIMA Nobuyuki, YAMAGAMI Takamasa, YAMATO Kazuhiro, YAMAMOTO Akira, YAMAMOTO Yasuchika, YOSHIDA Tetsuya, YOSHIMURA Koji, MITCHELL Jon, MISEEV Alexander, ORMES Jonathan F., SEO Eun-Suk, STREITMATTER Robert, WANG J. Z.

    44   71 - 86   2002.3

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    Language：Japanese   Publisher：Japan Aerospace Exploration Agency  

    The energy spectrum of cosmic-ray antiprotons has been measured by BESS successively in 1993, 1995, 1997, 1998, 1999 and 2000. In total more than 2 x10^3 antiprotons were clearly identified in an energy range of 0.18 to 4.20 GeV. From these successive measurements of the antiproton spectrum at various solar activity, the effect of the solar modulation and the origin of cosmic-ray antiprotons are discussed.

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    Other Link： http://repository.tksc.jaxa.jp/pl/dr/IS0200098000

  • BESS-Polar Experiment : Precise Measurement of Cosmic-ray Antiprotons by Long Duration Flights in Antarctica

    FUKE Hideyuki, YAMAMOTO Akira, NOZAKI Mitsuaki, MITCHELL John, SEO Eun-Suk, ASAOKA Yoichi, ABE Koh, ANRAKU Kazuaki, IZUMI Kosuke, OMIYA Hidenori, SASAKI Makoto, SHIKAZE Yoshiaki, SUZUKI Junichi, TANAKA Kenichi, TANIZAKI Keisuke, NISHIMURA Jun, HAINO Sadakazu, FUJIKAWA Motoharu, MAENO Tadashi, MAKIDA Yasuhiro, MATSUI Nagataka, MATSUDA Shinya, MATSUMOTO Hiroshi, YAMAGAMI Takamasa, YAMATO Kazuhiro, YAMAMOTO Yasuchika, YOSHIDA Tetsuya, YOSHIMURA Koji, MOISEEV Alexander, ORMES Jonathan F., WANG Jian-Zhong

    44   87 - 98   2002.3

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    A long-duration balloon flight in Antarctica, BESS-Polar experiment, is being prepared. It aims at extremely sensitive measurement of low energy antiprotons to search for any novel primary origin and to study the cosmic-ray propagation and the solar modulation. The search for cosmic antimatter such as anti-helium is a fundamental objective to study baryon asymmetry / symmetry in the Universe. This report describes the progress and future prospect of BESS-Polar experiment.

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    Other Link： http://repository.tksc.jaxa.jp/pl/dr/IS0200099000

  • Cosmic-ray antiproton flux in the energy range from 200 to 600 MeV (vol 474, pg 479, 1997)

    A Moiseev, K Yoshimura, Ueda, I, K Anraku, R Golden, M Imori, S Inaba, B Kimbell, N Kimura, Y Makida, H Matsumoto, H Matsunaga, J Mitchell, M Motoki, J Nishimura, M Nozaki, S Orito, J Ormes, T Saeki, ES Seo, S Stochaj, R Streitmatter, J Suzuki, K Tanaka, N Yajima, T Yamagami, A Yamamoto, T Yoshida

    ASTROPHYSICAL JOURNAL   482 ( 2 )   1087 - 1087   1997.6

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  • A Result of Cosmic-origin Anti-particle Search using Balloon-borne Experiment with a Superconducting magnetic rigidity Spectrometer (BESS)

    YOSHIMURA Koji, ANRAKU Kazuaki, INABA Susumu, IMORI Masatoshi, UEDA Ikuo, OTOBA Mayumi, ORITO Shuji, KIMURA Nobuhiro, SANUKI Tomoyuki, SAEKI Takayuki, SUZUKI Junichi, TANAKA Kenichi, NISHIMURA Jun, NOZAKI Mitsuaki, MAKIDA Yasuhiro, MATSUNAGA Hiroyuki, MATSUMOTO Hiroshi, MOTOKI Masakazu, YAJIMA Nobuyuki, YAMAGAMI Takamasa, YAMAMOTO Akira, YOSHIDA Tetsuya, Golden Robert, Kimbell Barbara, Mitchell Jon, Ormes Jonathan, Righter Donald, Streitmatter Robert

    33   121 - 133   1996.3

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    Search for cosmic-origin anti-particle were performed using Balloon-borne Experiment with a Superconducting magnetic rigidity Spectrometer (BESS). Based on the data took in '93 flight, we set a 95% C. L upper limit of 4.4×10^<-5> on Anti-He/He flux ratio. We have detected four antiproton in the kinetic energy range between 300 an 500MeV, corresponding to the antiproton/proton flux ratio of 1.2×10^<-5>.

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    Other Link： http://hdl.handle.net/10097/50952

  • Balloom-Brone Experiment with a Superconducting Magnetic Rigidity Spectrometer (BESS)-(1) / BESS Spectrometer and Balloon Flights

    YAMAMOTO Akira, YOSHIDA Tetsuya, ANRAKU Kazuaki, INABA Susumu, IMORI Masatoshi, UEDA Ikuo, OTOBA Mayumi, ORITO Shuji, KIMURA Nobuhiro, SANUKI Tomoyuki, SUZUKI Jun-ichi, TANAKA Ken-ichi, NIISHIMURA Jun, NOZAKI Mitsuaki, MAKIDA Yasuhiro, MATSUNAGA Hiroyuki, MATSUMOTO Hiroshi, MOTOKI Masakazu, YAJIMA Nobuyuki, YAMAGAMI Takamasa, YOSHIMURA Koji, Golden Robert, Kimbell Barbara, Mitchell Jon, Ormes Jonahtan, Righter Donald, Streitmatter Robert

    33   103 - 119   1996.3

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    Balloon-borne Experiment using a superconducting magnetic rigidity spectromeer is being carried out as a NASA-ISAS cooperative project. The spectrometer features to have a large geometrical acceptance of 0.4 m^2str based on a concept of transparent solenoidal magnet and horizontally cylindrical layout of the spectrometer, and it may realize a highly sensitive search for cosmic ray antiparticle search. This paper describes the spectrometer and progress of the balloon-borne spectrometer as the part (1).

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  • BALLOON-BORNE EXPERIMENT WITH A SUPERCONDUCTING SOLENOIDAL MAGNET SPECTROMETER

    A YAMAMOTO, K ANRAKU, R GOLDEN, T HAGA, Y HIGASHI, M IMORI, S INABA, B KIMBELL, N KIMURA, Y MAKIDA, H MATSUMOTO, H MATSUNAGA, M MOTOKI, J NISHIMURA, M NOZAKI, S ORITO, T SAEKI, J SUZUKI, N TAKIMI, K TANAKA, UEDA, I, N YAJIMA, T YAMAGAMI, A YAMAMOTO, T YOSHIDA, K YOSHIMURA

    BALLOON TECHNOLOGY AND OBSERVATIONS   14 ( 2 )   75 - 87   1994

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  • SEARCH FOR ANTIPARTICLES OF COSMIC ORIGIN WITH A SUPERCONDUCTING SPECTROMETER

    K ANRAKU, T HAGA, M IMORI, M NOZAKI, S ORITO, K SHIMAMURA, T TSUNODA, T YOSHIDA, K YOSHIMURA, Y AJIMA, H IKEDA, S INABA, T HARUYAMA, Y HIGASHI, Y MAKIDA, J SUZUKI, A YAMAMOTO, J NISHIMURA, T YAMAGAMI, R GOLDEN, B KIMBELL

    ADVANCES IN SPACE RESEARCH-SERIES   13 ( 2 )   169 - 172   1993.2

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Awards

  • Group Achievement Award

    2012.4   NASA  

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  • Group Achievement Award

    2009.4   NASA  

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Research Projects

  • Nuclear Clock: Exploring Fundamental Physics with an Innovative Probe

    Grant number：25H00397  2025.04 - 2030.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (S)

    吉村 浩司, 重河 優大, 笠松 良崇, 山口 敦史

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    Grant amount：\202150000 （ Direct expense: \155500000 、 Indirect expense：\46650000 ）

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  • 原子核時計が切り拓く時空計測フロンティア

    2024 - 2029

    科学技術振興機構  戦略的な研究開発の推進 戦略的創造研究推進事業 CREST 

    吉村 浩司

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    本研究ではレーザー励起が可能な唯一の原子核トリウム229を用いて、原子核時計の開発とその応用を目指します。外場の影響を受けにくいという特徴を活かした、2つの方式、固体原子核時計とイオントラップ原子核時計の実現を、国内の幅広い分野の研究力を結集・融合することで達成します。これにより、原子核時計という新しい量子計測技術を確立し、革新的な応用を目指します。

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  • レーザーによるコヒーレントな原子核操作の実現ー原子核時計の創成と応用に向けて

    Grant number：21H04473  2021.04 - 2025.03

    日本学術振興会  科学研究費助成事業 基盤研究(A)  基盤研究(A)

    吉村 浩司, 北尾 真司, 菊永 英寿, 重河 優大, 笠松 良崇, 山口 敦史

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    Grant amount：\42250000 （ Direct expense: \32500000 、 Indirect expense：\9750000 ）

    本研究では、以下のような研究項目に対して、段階的かつ相互に連携しながら研究をすすめることにより、世界に先駆けてレーザー励起を達成し、コヒーレントな原子核操作を実現し、研究目的の達成を目指す。以下にそれぞれの研究内容について本年度の研究成果を述べる。
    【能動的アイソマーの生成法の進化による真空紫外光の観測】 理論で予測されるアイソマーのエネルギー、寿命に対して、バンドパスフィルターの波長選択特性、測定時間を変化させることにより、系統的に真空紫外光の探索を行った。これまで探索した領域では真空紫外光は観測されておらず、今後さらに測定範囲を拡大するために、測定装置、光学系の改良を行った。放物面鏡を用いた光学系を開発して、真空紫外光を伝送することにより照射中にも測定を行い、アイソマーが極めて短寿命の場合にも観測できるようにした。また、X線のエネルギ－を単色化するモノクロメータについて、窒素冷却により高精度化したものを開発し、X線のエネルギー幅を従来の1/10に狭めて、バックグランドを減少させることに成功した。
    【化学状態に支配された229mTh 核壊変の解明】 能動的アイソマー生成法で用いる核共鳴散乱観測をより効率よく進めるための、Th標的を開発した。作成に使用した手法は「沈殿法」および「インクジェット法」で、従来の3倍程度の標的密度を有し、より効率よく、高精度で共鳴エネルギーを決定することが可能になった
    【イオントラップを用いた229Th 原子核時計基盤技術の確立】 イオントラップ用の波長1088 nm, 690 nm, 984 nm の半導体レーザーの開発およびイオントラップに必要な装置の開発を行った。これまでにTh-229の同位体であるTh-232を用いたトラップ実験には成功しており、その結果をもとに、Th-229のトラップを進めていく

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  • Electron electric dipole moment search by using polarized ultracold molecule s

    Grant number：21H01113  2021.04 - 2025.03

    日本学術振興会  科学研究費助成事業 基盤研究(B)  基盤研究(B)

    DOYLE JOHN, 吉村 浩司, 増田 孝彦

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    Grant amount：\17160000 （ Direct expense: \13200000 、 Indirect expense：\3960000 ）

    As for the photodetector development, we have procured various items for mass production. For example, we procured photosensors (Silicon photomultiplier: SiPM) which are the most important part of the detector. We got relatively low-dark count individual sensors. Since suppressing the dark count is one of the crucial points in the development, we plan to cool the SiPMs below the dew point, the low-dark count individuals mitigate the cooling requirements of the detectors.
    In order to mitigate stray light from the readout laser scattering, we procured 2 pieces of custom-made interference bandpass filters, which have a great extinction ratio between ~510nm (signal wavelength) and longer than 700 nm (background wavelength) for a prototype test. Based on the test, we confirmed that the stray light suppression ratio is high enough while keeping over 90% transmission for the signal wavelength.
    We also prepared various peripheral hardware such as parts of preamplifier boards and assemblies, and vacuum feedthrough assemblies.
    Mass production has already been launched in this period and will be finished probably at the beginning of the next fiscal year. We are also constructing operating software and hardware in parallel.

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  • 冷却極性分子の量子操作による電子の永久電気双極子モーメント探索

    Grant number：20KK0068  2020.10 - 2026.03

    日本学術振興会  科学研究費助成事業 国際共同研究加速基金(国際共同研究強化(B))  国際共同研究加速基金(国際共同研究強化(B))

    増田 孝彦, 吉村 浩司, 植竹 智

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    Grant amount：\18720000 （ Direct expense: \14400000 、 Indirect expense：\4320000 ）

    冷却ThO分子を用いた電気双極子能率探索の感度向上のための光検出器の開発では、基礎設計が完了し量産プロセスを開始することができた。以下に主だった進展を述べる。
    1. 16channelをアナログサムする回路系の設計が完了した。2. 真空チェンバの温度サイクルによる光学窓接着部の剥離が確認された。この解決のため、接着部の設計変更、および接着剤の再選定を行い、60度程度までの温度上昇では剥離しないよう改善した。さらにインターロック機構の導入で、そもそもチェンバに温度サイクルが起こらないように対策した。3. 本実験ではミリ秒程度のパルス信号が頻度50Hzで発生するが、それによるバイアス電圧の変動と信号ベースラインの変動が確認された。バイアス印加に用いる電源を再選定しバイアス電圧の変動を抑制、バイアス回路を読み出し回路の調整で信号ベースラインの変動を緩和し問題ないレベルまで抑え込むことができた。4. 線形性、ノイズ、ダークカウント、冷却性能などはこれまでの設計で問題ないことを確認しており、本年度もそれを再確認している。5. 2021年8-9月に米国に試作機を持参し、実際に冷却ThO分子ビームの蛍光観測を実施した。従来用いていた光電子増倍管に比べ検出光量が2.7~3倍程度に増加しており、本研究開発の動機である検出光量の増加を確認した。
    以上のプロセスを経て基礎設計開発は終了し、2021年末から量産体制に移行することができた。量産プロセスは次年度まで継続する予定である。

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  • Interdisciplinary research on the structure of monumental royal-class mounded tombs

    Grant number：20H05634  2020.08 - 2025.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (S)  Grant-in-Aid for Scientific Research (S)

    清家 章, 鈴木 茂之, 山口 雄治, 居島 薫, 白木 一郎, 光本 順, 野崎 貴博, 永嶺 謙忠, 福永 伸哉, 吉村 浩司, 南 健太郎, 三宅 康博, 野坂 俊夫, 鳥養 映子

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    Grant amount：\195650000 （ Direct expense: \150500000 、 Indirect expense：\45150000 ）

    研究開始時点では想定できなかった長期にわたる新型コロナウィルスのパンデミックの影響を受けて、フィールド調査のいくつかは計画の順番変更を余儀なくされたが、困難を乗り越えておおむね順調、一部計画を先行して進めることができた。本研究はミュオン班・墳丘班・埴輪班の３つの班によって実施されている。それぞれの班ごとに研究経過を報告する。
    ミュオン班：2020 年度は、古墳研究に適用するミュオン検出器の設計を検討し、検出器製作の基本方針を定め、製作を開始した。
    墳丘班：墳丘班による三次元計測は、岡山市造山古墳周辺、総社市作山古墳で実施している。総社市鳶尾塚古墳の三次元計測も完了している。赤磐市両宮山古墳については、赤磐市教育委員会から三次元データを提供していただき、当初予定していた吉備三大古墳の墳丘三次元データを初年度で入手したことになる。次いでそれぞれのデータ整理を開始している。また、鳶尾塚古墳では墳丘の発掘調査を実施し、直径23mの円墳であることが推定されるに至っている。
    埴輪班：造山古墳、両宮山周辺古墳（赤磐市森山古墳、同・宮山 4 号墳、同・岩田 3 号墳）と倉敷市二万大塚古墳出土埴輪の資料を所蔵機関から入手し、光学・電子顕微鏡による微細組織観察、X 線回折装置による鉱物同定、および電子線マイクロアナライザ・蛍光 X 線分析装置による化学分析を実施した。その結果、胎土には主に風化花崗岩起源の鉱物粒子と広域テフラ起源のガラス粒子が含まれており、それらの組成から生産地を特定できる可能性が示された。また、鉱物の熱変成と融解の程度により、野焼きと窖窯における焼成温度が見積もられた。埴輪の考古学的観察も並行して進め、造山古墳と畿内王陵系埴輪の比較研究を実施している。

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  • ミュオンラジオグラフィを用いた巨大古墳調査法の開発にかかる研究

    Grant number：20H00027  2020.04 - 2025.03

    日本学術振興会  科学研究費助成事業 基盤研究(A)  基盤研究(A)

    清家 章, 鈴木 茂之, 居島 薫, 白木 一郎, 光本 順, 永嶺 謙忠, 福永 伸哉, 吉村 浩司, 南 健太郎, 三宅 康博

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    Grant amount：\45370000 （ Direct expense: \34900000 、 Indirect expense：\10470000 ）

    考古班は、岡山大学が作成した岡山市造山古墳３次元測量データ３種類と赤磐市が作成した両宮山古墳の３次元測量データを入手し、それぞれの古墳の測量データがミュオンラジオグラフィにおける解析とシミュレーションに適切な精度を有しているか検討を進めた。造山古墳では３種のデータのうち、より適切なデータを選択した。両宮山古墳では座標データから等高線を復元し、ミュオンラジオグラフィの解析に備えている。岡山市造山古墳のミュオンラジオグラフィ調査に備え、岡山市教育委員会ならびに地元保存会と協議を実施し、基本的に協力を取り付けている。
    ミュオン班の今年度の課題は、３段構造を持つ古墳の中段まで人力で運搬可能なコンパクト可搬型ミュオン検出器の開発である。（１）波長変換ファイバー入りプラスチックシンチレータと光半導体デバイス（MPPC）の組合せによるカウンターの効率と実装法を確認するため、技術的に確立している光電子増倍管と比較してカウンター単体の予備実験を実施し、部品と材料の調達を開始した。（２）露天の測定環境に耐え得る防水、防砂、温調機能を持つ検出器の構造・構成を検討するため、文献調査、福島原発等の検出器開発者らとの情報交換、予備実験を繰り返し、基本設計を進めた。（３）考古班からの詳細情報に基づくシミュレーション解析を進めた。
    本研究費で購入した光電子増倍管、波長変換ファイバー、データ解析用パソコン等を予備実験に活用した。検出器筐体の構造や設置場所の検討に必要な現地環境調査は、所属部署の県外出張自粛要請のために断念した。
    検出器の開発ならびに考古班の作業は基盤Sに引き継いで実施中である。

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  • Study on thorium-229 Low-lying Isomer state and its application for fundamental physics

    Grant number：18H01230  2018.04 - 2021.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)  Grant-in-Aid for Scientific Research (B)

    Yoshimura Koji

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    Grant amount：\17290000 （ Direct expense: \13300000 、 Indirect expense：\3990000 ）

    We have succeeded in artificially producing the first excited state (isomer state) of thorium-229, which has the smallest excitation energy in the world. The isomer state was produced via the second excited state by a new method using nuclear resonant scattering with high-brilliance synchrotron radiation X-rays and a fast X-ray detector. This study has enabled us to produce a large number of thorium-229 isomer states in controllable manner, and we will make effective use of the produced isomer states to elucidate the isomer states in detail.

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  • Study on Thorium-229 low-lying isomeric state

    Grant number：15H03661  2015.04 - 2018.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)  Grant-in-Aid for Scientific Research (B)

    Yoshimura Koji, YAMAGUCHI Atsushi, SETO Makoto, Stellmer Simon

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    Grant amount：\17030000 （ Direct expense: \13100000 、 Indirect expense：\3930000 ）

    We searched for eV-order meta-stable isomeric excited state of Th-229, which is extraordinally low-lying for ordinary nuclei. We developed the new scheme using nuclear resonant scattering with high intense synchrotron radiation X-ray source, fast X-ray detection system, high performance targetry, and X-ray focusing system. We have successfully observed the precise signal from nuclear resonant scattering of nuclei with half life below 1 ns.

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  • Basic studies on neutrino mass spectroscopy with atoms

    Grant number：15H02093  2015.04 - 2018.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)  Grant-in-Aid for Scientific Research (A)

    Sasao Noboru

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    Grant amount：\42510000 （ Direct expense: \32700000 、 Indirect expense：\9810000 ）

    The ultimate goal of the studies is to measure neutrinos’ important parameters yet to be determined. To this end, we focus on a process which emits neutrino pair and photon from excited states of atoms or molecules. Experimentally the most important point is to realize amplification of process rates due to quantum coherence. In this research, we studied experimentally this amplification mechanism using two photon coherent emissions from a vibrationally excited state of hydrogen molecules. As a result, we successfully observed coherently amplified two photon process in a counter-propagating excitation configuration in addition to usual Raman-type excitation configuration. The process rate was found to agree well with the expectation of the theory. Related theoretical studies were also performed: we proposed a method to remove background events, and found a way to improve sensitivity to determine neutrino parameters by imprinting an initial phase to a target system.

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  • Development of a beam monitor of two dimensional beam profile and beam halo with high sensitivity for high intensity beams

    Grant number：24310079  2012.04 - 2016.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)  Grant-in-Aid for Scientific Research (B)

    HASHIMOTO YOSHINORI, TOYAMA Takeshi, HORI Yoichiro

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    Grant amount：\17810000 （ Direct expense: \13700000 、 Indirect expense：\4110000 ）

    We performed the actual design and partial fabrication of this instrument for high intensity proton beams of the J-PARC Main Ring. The studied contents were summarized to five points as follows. (1) From the examination of the beam condition and the measurement of the background, we confirmed enough higher signal vs. noise ratio. (2) We developed the main optical system made of aluminum alloy to use in a vacuum. (3) We designed a vacuum system and the interlock which did not deteriorate the vacuum environment of the Main Ring. (4) We calculated the impedance of the apparatus for the circulating proton beam and it is confirmed that there was no factor which significant affects the beam. (5) We mounted the measuring equipment of a radiation-hardened image intensifier to other profile monitors and the effectiveness was demonstrated.
    The vacuum chamber is under fabrication and the beam measurement will be started by the end of the H28 year with the proton beam of power of over 450kW.

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  • Development of the next generatiof PPD camera for the ground based gamma-ray telescope

    Grant number：22340061  2010.04 - 2013.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)  Grant-in-Aid for Scientific Research (B)

    NISHIJIMA Kyoshi, KUSHIDA Junko, YOSHIMURA Koji, KAJINO Fumiyoshi, SASAKI Osamu, NAKAYA Tsuyoshi

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    Grant amount：\17810000 （ Direct expense: \13700000 、 Indirect expense：\4110000 ）

    We studied the basic characteristics of MPPC(3mm×3mm size,50μm pitch), and found that the temperature characteristics of the gain is-3.1×10^4/℃, noise rate depends on both overvoltage and temperature, cross talk probability as a function of overvoltage is expressed by a combination of exponential function and linear function, and the sum probability of cross talk and after pulse don't depend on the temperature. Then we built prototype camera for an atmospheric Cherenkov telescope, which consist of 4 discrete arrays of 4ch by 4ch MPPCs (3mm×3mm size, 50μm pitch). We didn't succeed to detect atmospheric Cherenkov image mainly due to higher trigger rate compared to pulse width of MPPC signals.

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  • Search for cosmic-ray antideuteron and antihelium with long duration balloon flight data

    Grant number：22540322  2010.04 - 2013.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

    YOSHIMURA KOJI, HASEGAWA Masaya, YAMAMOTO Akira, SAKAI Kenichi, SASAKI Makoto

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    Grant amount：\4290000 （ Direct expense: \3300000 、 Indirect expense：\990000 ）

    We have searched for cosmic-ray antideuteron and antihelium with BESS-Polar II data. We carefully examined the recovered BESS-PolarII payload from Antarctica and obtained various key information about the detector status during the flight and improved detector performance with the novel calibration method. Based on the data, new searches were performed for antideuteron and antihelium with improved sensitivity by an order of magnitude. No candidates were observed. Null observation of antihelium, together with previous BESS data, placed the most stringent constraint on existence of anti-domain nearby our universe.

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  • Promotion of Lepton Flavor Physics by developing an intense pulsed muon beam

    Grant number：22340065  2010 - 2012

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)  Grant-in-Aid for Scientific Research (B)

    MIHARA Satoshi, NISHIGUCHI Hajime, AOKI Masaharu, YOSHIMURA Koji

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    Grant amount：\7410000 （ Direct expense: \5700000 、 Indirect expense：\1710000 ）

    We have promoted a development of high intensity pulsed muon beam with high purity at J-PARC, where user operation has been started in 2008. This has contributed to opening up a new research area in elementary particle physics. In this research there should be no beam particle leakage in between consecutive beam pulses. In order to address this issue we developed a new method to form a beam pulse and a method to diagnose the produced beam.

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  • Detection of neutrino pairs using macro coherent amplification mechanism

    Grant number：21104002  2009.04 - 2015.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)  Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

    SASAO NOBORU, NAKANO Itsuo, YOSHIMURA Motohiko, FUKUMI Atsushi, WAKABAYASHI Tomonari, TANAKA Minoru, KATSURAGAWA Masayuki, NANJO Hajime, KAWAGUCHI Kentarou, TANG Jian, KUBOZONO Yoshihiro, TANIGAKI Katsumi, NAKAJIMA Kyo, YOSHIMURA Koji, YOSHIMI Akihiro, UETAKE Satoshi, KUMA Susumu, TANIGUCHI Takashi

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    Grant amount：\411840000 （ Direct expense: \316800000 、 Indirect expense：\95040000 ）

    "Macro-coherent amplification mechanism" is the crucial principle for success of the neutrino mass spectroscopy with atoms. The most important result of the present research was an experimental proof of the principle with a two photon process from the vibrationally excited state of para-hydrogen molecules. Actually, the initial coherent states were prepared by an adiabatic Raman process, and two photon emissions were observed. As a result, a gigantic enhancement factor of the photon yields greater than 15 orders of magnitude was confirmed compared to its natural emission rate; it was found consistent with the theoretical prediction. Thus a big step has been made forward towards the neutrino mass spectroscopy with atoms. In addition, detailed studies on super-radiance and phase relaxation etc. were conducted as basic studies using various atoms and molecules.

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  • Study on short term variation of primary cosmic-ray spectrum with long duration balloon flight

    Grant number：19340070  2007 - 2009

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)  Grant-in-Aid for Scientific Research (B)

    YOSHIMURA Koji, HASEGAWA Masaya, YAMAMOTO Akira, MAKIDA Yasuhiro

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    Grant amount：\18590000 （ Direct expense: \14300000 、 Indirect expense：\4290000 ）

    BESS-Polar II experiment was successfully carried out with the improved instruments which enabled precise measurement of daily variation of the primary cosmic-ray spectrum. During 24.5 day scientific observation, about 47 billion cosmic-ray events were observed. After detailed calibration using precise temperature and pressure data, we have obtained the precision proton spectra for the entire flight duration. We have successfully studied daily variation of proton spectrum and investigated its correlation with solar wind.

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  • Search for Primordial Antiparticle with a balloon-borne experiment using a superconducting spectrometer at a solar minimum period

    Grant number：18104006  2006 - 2009

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (S)  Grant-in-Aid for Scientific Research (S)

    YAMAMOTO Akira, YOSHIMURA Koji, MAKITA Yasuhiro

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    Grant amount：\104260000 （ Direct expense: \80200000 、 Indirect expense：\24060000 ）

    The research program by using the Balloon-borne Experiment with a Superconducting Spectrometer (BESS) has much progressed with a long duration flight over Antarctica at soar minimum period in 2007～2008 (BESS-Polar II), as summarized as follows : (1) The antiproton spectrum measured shows good consistency with secondary antiproton model calculation. (2) Given this background of secondary antiprotons, cosmologically primary antiprotons have been searched for using the observed antiproton spectrum. The result show no evidence of primary antiprotons that originated from the evaporation of Primordial Black Holes within the obtained statistics. (3) No anti-helium candidate was detected, and a resultant up limit of 7x10E-8 for the abundance ratio of anti-helium/helium in a rigidity range of 1-14 GV by combining all the BESS and BESS-Polar data. This the most stringent limit obtained to date.

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  • A Study on Muon Ionization Cooling in a Ring

    Grant number：18340065  2006 - 2008

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)  Grant-in-Aid for Scientific Research (B)

    SATO Akira, ISHIMOTO Shigeru, SUZUKI Shouji, KUNO Yoshitaka, MORI Yoshiharu, YOSHIMURA Koji, ITAHASHI Takahisa, YOSHIDA Makoto, OKI Toshiyuki

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    Grant amount：\17790000 （ Direct expense: \15000000 、 Indirect expense：\2790000 ）

    次世代の大型加速器計画であるニュートリノ・ファクトリーやミューオン・コライダーを実現するためには、ミューオン・ビームのイオン化冷却技術確立が重要である。本研究では、円形加速器を用いた効率の良いビーム冷却を目指し、現実的なビーム冷却リングの設計を検討した。このなかで、ビーム冷却やビームの入出射に必要な長いストレートセクションを持つレーストラック型FFAGを新しく提案し、それをビーム冷却リングへ応用することを検討し、また、くさび型超流動ヘリウム減速材の開発を進めた。

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  • A Study of A Super Muon Beam for New Initiative on Muon Physics

    Grant number：15GS0211  2003 - 2007

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Creative Scientific Research  Grant-in-Aid for Creative Scientific Research

    KUNO Yoshitaka, AOKI Masaharu, SATO Akira, YOSHIMURA Koji, OHMORI Chihiro, NAKANO Takashi

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    Grant amount：\513500000 （ Direct expense: \395000000 、 Indirect expense：\118500000 ）

    In this project, a new technology to improve a muon beam has been developed in order to promote muon science further Since the present muon beams might not be sufficient in both their intensity and quality, most of muon experiments have some difficulties with some experimental constraints. If we have a highly intense and monoenergetic muon beam, it would introduce a great breakthrough in muon science. We call such a future muon beam as a “Super Muon Bearm" . We proposed to apply a new technique of phase rotation to make energy spread of a muon beam narrower An aimed beam intensity is more than 10,000 times higher than that of the world highest beam at PSI. New experiments to search for processes of lepton flavor violation of muons are proposed using this “super muon beam" by the Kuno-group, Osaka University.
    The objective of this research project is to establish a technique of phase rotation to make a monoenergetic beam. The two key devices are an ultra-high field gradient RF system and a large aperture FFAG (Fixed Field Alternating Gradient) magnet, both of which have been developed success fully in this project The FFAG ring, which consists of an RF cavity and 6 FFAG magnets, was constructed at Research Center for Nuclear. Physics (RCNP), Osaka University. Using this ring, basic experiments to demonstrate phase rotation were successfully performed.
    The project has established the important key-technologies and showed a feasibility of phase rotation for a monoenergetic beam. The achievements of the project will promote future muon science ahead. Technological spin-offs might spread beyond muon science. Even for accelerator science, such as designs of a muon collider and neutrino factories, has received great benefits.

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  • Development of pulsed conducting target for high intensity and high luminosity muon beam

    Grant number：14204028  2002 - 2004

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)  Grant-in-Aid for Scientific Research (A)

    YOSHIMURA Koji, KOBAYASHI Takashi, IGARASHI Yoichi, NISHIKAWA Koichiro, IWASHITA Yoshihisa

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    Grant amount：\55510000 （ Direct expense: \42700000 、 Indirect expense：\12810000 ）

    We have studied "conducting pulsed target" for high intensity muon source. By applying large pulsed current, secondary-produced pions would be confined inside the target because of large toroid field. In the end, pions would come out from the end of the target. This scheme would provide much brighter secondary beam with smaller emittance.
    To realize this new scheme, we have investigated various fields as follows:
    1. We have determined the basic parameters for the PRISM, a low energy muon source. We first studied mercury target and have developed several equipments: mercury loop, pulsed power supply, and pulse transformer.
    2. Radiation heating caused by beam-target interaction is one of the key parameters in design of the target. We developed a new technique, so called "cryogenic calorimeter" to measure beam heating precisely and to calibrate Monte Carlo simulation code.
    3. It is very important to select the target material which could survive under high pulsed current and high intense beam. We have measured mechanical properties for several candidate materials and carefully watch their change when they are irradiated.
    4. It is very difficult to measure emittance of the beam with large dispersion such as secondary beam. We have developed a new measurement method of beam emittance by measuring track and momentum for each secondary particle.
    We have studied and obtained lots of essential knowledge to realize the "conducting pulsed target" although we could not carried out proof-of-principle experiments due to the limited time and unavailability of the test beam. We will to continue to work on developing the target technology, on the basis of these accomplishments.

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  • BESS測定器による宇宙線μ粒子絶対流束高度変化の精密測定

    Grant number：12047206  2000 - 2003

    日本学術振興会  科学研究費助成事業 特定領域研究  特定領域研究

    佐貫 智行, 吉村 浩司, 笠原 克昌, 吉村 浩司, 野崎 光昭, 上田 郁夫, 佐貫 智行, 森下 伊三男

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    Grant amount：\98700000 （ Direct expense: \98700000 ）

    気球上昇中に超伝導スペクトロメータ(BESS)を用いて観測した宇宙線のデータを解析し、残留大気圧にして5〜800g/cm2に於ける大気μ粒子のスペクトルを精密に求め、μ粒子の強度が高度と共に変化する様子(いわゆる発達曲線)を得た。この発達曲線から、大気の上層ではμ粒子が生成され、高度が低くなるに従って崩壊していく様子を克明に捉えることができた。他の実験で得られた同種のデータと比較して、本研究で得たデータは、統計誤差が小さく、また、系統誤差も小さく押さえ込むことに成功した。また、地上で観測した様々のμ粒子スペクトルを解析し、μ粒子の強度は季節や緯度等、様々な環境の影響を受けることを示した。
    また、大気μ粒子・大気ニュートリノのモンテカルロ計算に最適化したクラスタ計算機のハードとソフトの調整を進め、計算速度を向上させた。計算コードの最適化を進め、観測データとの詳細な比較を行った。モンテカルロ計算に組み込む相互作用モデルとして様々なモデルを用い、任意の高度に於いてそれぞれのモデルが予言する大気μ粒子のスペクトルを得た。気球高度(残留大気圧にして5〜30g/cm2)に於ける大気μ粒子のスペクトルと、モンテカルロ計算の詳細な比較から、宇宙線と大気分子の相互作用モデルとしてはDPMJET-IIIモデルが最適であると分かった。次に、入力データとしてBESSが測定した一次宇宙線のエネルギースペクトルを、また、相互作用モデルとしてDPMJET-IIIモデルを組み込んだ上で、詳細な大気構造を再現したモンテカルロ計算を行った。この結果、1GeV/c以下と数十GeV以上の領域ではBESSが測定した結果と、計算結果に有意な食い違いが見られ、相互作用モデルに修正が必要であると分かった。

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  • 一次宇宙線(陽子・ヘリウム)の精密測定による大気ニュートリノ絶対強度の決定

    Grant number：12047227  2000 - 2003

    日本学術振興会  科学研究費助成事業 特定領域研究  特定領域研究

    吉田 哲也, 槇田 康博, 吉村 浩司, 三井 清美, 笠原 克昌, 山本 明

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    Grant amount：\166800000 （ Direct expense: \166800000 ）

    平成14年度に実施したBESS気球搭載型超伝導スペクトロメータを用いた宇宙粒子線観測気球実験のデータ解析を進め、1〜540GeVの広いエネルギー領域にわたる一次宇宙線(陽子・ヘリウム)エネルギースペクトルを10%以下の精度で決定した。
    平成14年8月に実施された気球実験では気球運用のトラブルから観測時間が予定より短く、また平成15年度の気球実験はNASAの科学観測用大型気球のトラブルの頻発による使用許可取り消しのため実施できなかった。そこで測定器性能の理解を徹底的に深めて平成14年に得られたデータを最大限生かし、初期の目標をほぼ達成するエネルギー領域と精度でエネルギースペクトルを決定できた。
    データ解析にあたっては、PCコンプレックスとSANEデータストレージシステムを組み合わせた新しいデータ解析用計算機システムを構築し、フライトデータから信頼できる測定器較正パラメタを導出し、またシミュレーションデータの生成に利用した。
    BESS測定器についても地上での観測における高エネルギー領域での粒子識別性能を向上させるため、シリカエアロジェルカウンタの改良を進めた。飛跡検出器読出し用電子回路も10ビット精度のフラッシュADCシステムを構築し、運動量分解能の一層の改善を図った。また超伝導マグネットの運用に必要な機器を更新し、地上観測において効率的に超伝導ソレノイドを運用できるように改善した。
    これらの成果は平成15年8月に開催された国際宇宙線会議(ICRC2003)や「第5回ニュートリノ振動とその起源ワークショップ(NOON2004)」、日本物理学会等で報告された。

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  • Search for Antimatters of Cosmic Origin with the BESS Spectrometer

    Grant number：11440085  1999 - 2001

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)  Grant-in-Aid for Scientific Research (B)

    YOSHIDA Tetuya, YOSHIMURA Koji, MAKIDA Yasuhiro

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    Grant amount：\11900000 （ Direct expense: \11900000 ）

    1.Three successive balloon-borne experiments with the BESS superconducting spectrometer have been carried out from 1999 to 2001 to serch for cosmic antimatters in cosmic rays.
    2.Togeter with data taken in the prebious BESS flights, an upper limit on a ratio on antiheliums to helium nuclei was placed to be less than 6.8 x 10-7 at the 95% confidence level. This most stringent upper limit in the world directly indicates that the Universe near our galaxy consists of matters.
    3.For further search for antimatters with the higher sensitivity, a longer balloon-borne experiment with smaller superconducting spectrometer was discussed in the 7th BESS workshop and planed by a long duration flight in Antarctica.
    4.Detector R＆D for the cosmic-ray measurement with the long duration balloon has been continued, for example, the improvement of the water-proof of the superconducting magnet, distributed environmental monitor system for the house-keeping and lighter drift chamber with low-material structure.
    5.A long duration balloon-borne "BESS-Polar" experiment in Antarctica was proposed and is planed to be carried out in December 2003 to January 2004. For this experiment, smaller and lighter new superconducting spectrometer has been developed and constructed.

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  • Study of the Origin of the Cosmic-Ray Antiprotons using the BESS Spectrometer

    Grant number：11694104  1999 - 2000

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A).  Grant-in-Aid for Scientific Research (A).

    YOSHIDA Tetsuya, MAKIDA Yasuhiro, YOSHIMURA Koji, YAMAMOTO Akira, NOZAKI Mitsuaki, SANUKI Tomoyuki

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    Grant amount：\13400000 （ Direct expense: \13400000 ）

    In order to study the origin of the cosmic-ray antiprotons,
    1. Two successive balloon-borne experiments with the BESS superconducting spectrometer have been carried out in 1999 and 2000 to measure precise spectrum of the cosmic rays at the solar maximum period. In these flights, more than thousand antiproton events were accumulated.
    2. By the data from those flights, charge dependence on the solar modulation was clearly observed, which is inevitable to understand the energy spectrum of secondary antiprotons.
    3. A search for antihelium nuclei in the primary cosmic rays has been carried out and an upper limit of the ratio of antiheliums to helium nuclei to be less than 7×10^<-7> was placed, which is most stringent in the world.
    4. Precise energy spectrum of primary protons was measured, especially in low energy region below 1 GeV.Using the data during the acsend of the balloon, residual pressure dependence on the proton spectrum was observed in order to check models of the development of cosmic rays in the atmosphere.
    5. The 7^<th> BESS workshop was held to evaluate the results from past BESS experiments. For further investigation of the primary origin of the low energy antiprotons, a longer balloon-borne experiment with smaller superconducting spectrometer was discussed and planed by a long duration flight in Antarctica in that workshop.

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  • BESS Experiment to Search for Cosmic Ray Antiparticle

    Grant number：08044102  1996 - 1997

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for international Scientific Research  Grant-in-Aid for international Scientific Research

    YAMAMOTO Akira, ORMES Jonathan, YOSHIMURA Koji, ORITO Shuji, MAKIDA Yasuhiro, YOSHIDA Tetsuya

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    Grant amount：\6500000 （ Direct expense: \6500000 ）

    The Balloon-borne Experiment with t Superconducting magnet Spectrometer (BESS) has been carried out in a collaboration amongst High Energy Accelerator Research Organization, University of Tokyo, Kobe University, Institute for Space and Astronautical Science. The ballooning has been supported by NASA balloon project office.
    Search for cosmic-ray antiprotons has been carried out, and more than 400 cosmic-ray ntiprotons have been detected in an energy range of 0.5-1 GeV with the definitive identification by direct mass measurement.
    Search for antihelium has been also made and no candidates have been detected in a rigidity range below 16 GV with the possible upper limit of 3x10^<-6> in He-bar/He ratio. Those results have been published partly already published in Physical Review Letters and The Astrophysical Journal

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  • Study of Elementary Particles Using OPAL Detector at LEP & LEP II

    Grant number：06044046  1994 - 1996

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for international Scientific Research  Grant-in-Aid for international Scientific Research

    KOBAYASHI Tomio, HEUER Rolf Dieter, OMORI Tsunehiko, KANZAKI Junichi, YOSHIMURA Koji, MORII Masahiro, MORI Toshinori, MASHIMO Tetsuro, KAWAMOTO Tatsuo, KOMAMIYA Sachio, ORITO Shuji

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    Grant amount：\31300000 （ Direct expense: \31300000 ）

    The OPAL experiment, in which we have been participating and playing leading roles, is one of the four experiments at the CERN Large Electron-Positron collider (LEP). LEP started its operation in 1989 and was running in the vicinity of the Z^0 boson resonance until 1995. In 1994 and 1995 OPAL collected about 2.7 millions of Z^0 decay events. The following are several main results obtained in recent years using a total of 5 millions of Z^0 events recorded since 1989.
    1. The Standard Model was tested by measuring various Z^0 properties with unprecedented precisions. The mass of the top quark was estimated, which was later confirmed by its discovery at the Tevatron accelerator.
    2. A new limit was obtained for the mass of the tau neutrino using a large number of tau particles from the Z^0 decays.
    3. A variety of bottom quark properties, such as lifetimes of bottomed mesons and baryons and oscillation of neutral bottomed mesons, were measured with various methods and outstandingly good precisions.
    4. Extensive searches for various new particles were performed.
    In November 1995 LEP started to increase its collision energy beyond the Z^0 resonance. In 1996 LEP reached the energy which allows pairs of W bosons to be created for the first time in e^+e^- collisions.
    1. The mass of the W boson has been measured with two independent methods. Even with only a few hundreds of W-pair events observed so far for the four LEP experiments, the accuracy of the mass determination is already comparable to those obtained by other previous experiments.
    2. The Standard Model is found to be valid at this higher energy region as well.
    3. The mass of the Higgs boson, an elementary scalar particle predicted in the Standard Model, is found to be heavier than 68.8 GeV.Searches for supersymmetric particles were pursued and the parameters in the theories have been further restricted.

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