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Kozai Masayoshi  小財 正義

ORCIDConnect your ORCID iD *help
Researcher Number 60781739
Other IDs
Affiliation (Current) 2025: 大学共同利用機関法人情報・システム研究機構(機構本部施設等), データサイエンス共同利用基盤施設, 特任研究員
Affiliation (based on the past Project Information) *help 2021 – 2024: 大学共同利用機関法人情報・システム研究機構(機構本部施設等), データサイエンス共同利用基盤施設, 特任研究員
2019 – 2020: 国立研究開発法人宇宙航空研究開発機構, 宇宙科学研究所, 宇宙航空プロジェクト研究員
2017 – 2018: 国立研究開発法人宇宙航空研究開発機構, 宇宙科学研究所, 招聘職員
Review Section/Research Field
Principal Investigator
Basic Section 60080:Database-related / Basic Section 15020:Experimental studies related to particle-, nuclear-, cosmic ray and astro-physics / Particle/Nuclear/Cosmic ray/Astro physics
Except Principal Investigator
Medium-sized Section 17:Earth and planetary science and related fields
Keywords
Principal Investigator
宇宙物理 / 宇宙線 / 反粒子 / 機械学習 / 自然言語処理 / データ公開 / データ管理 / 研究データ / 自励振動ヒートパイプ / リチウムドリフト型シリコン検出器 … More / 宇宙天気 / 惑星間空間 / 太陽変調 / 反陽子 / 銀河宇宙線 / リーク電流 / 暗黒物質 / 大口径センサ / リチウムドリフト型シリコン / シリコン検出器 … More
Except Principal Investigator
アイスランド / 極域大気変容 / 高エネルギー粒子降下 / オーロラ現象 / 南極昭和基地 / アイスランド観測 / 南北共役性 Less
  • Research Projects

    (4 results)
  • Research Products

    (40 results)
  • Co-Researchers

    (7 People)
  •  Collaborative study between natural science and informatics toward activation of research data distributionPrincipal Investigator

    • Principal Investigator
      小財 正義
    • Project Period (FY)
      2024 – 2026
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Review Section
      Basic Section 60080:Database-related
    • Research Institution
      大学共同利用機関法人情報・システム研究機構(機構本部施設等)
  •  Study on north-south conjugacy of high energy particle precipitation from space

    • Principal Investigator
      門倉 昭
    • Project Period (FY)
      2022 – 2027
    • Research Category
      Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))
    • Review Section
      Medium-sized Section 17:Earth and planetary science and related fields
    • Research Institution
      National Institute of Polar Research
  •  High-sensitivity observation of low-energy antiprotons for the study of solar modulation of cosmic-raysPrincipal Investigator

    • Principal Investigator
      Kozai Masayoshi
    • Project Period (FY)
      2020 – 2022
    • Research Category
      Grant-in-Aid for Early-Career Scientists
    • Review Section
      Basic Section 15020:Experimental studies related to particle-, nuclear-, cosmic ray and astro-physics
    • Research Institution
      大学共同利用機関法人情報・システム研究機構(機構本部施設等)
      Japan Aerospace EXploration Agency
  •  Study of a high-performance silicon detector with large sensitive area to search for cosmic-ray antiparticlesPrincipal Investigator

    • Principal Investigator
      Kozai Masayoshi
    • Project Period (FY)
      2017 – 2019
    • Research Category
      Grant-in-Aid for Young Scientists (B)
    • Research Field
      Particle/Nuclear/Cosmic ray/Astro physics
    • Research Institution
      Japan Aerospace EXploration Agency

All 2024 2023 2022 2021 2020 2019 2018 2017

All Journal Article Presentation

  • [Journal Article] Data mining of cosmic-ray anisotropy observed with the Global Muon Detector Network2023

    • Author(s)
      Kozai Masayoshi、Hayashi Y.、Kato C.、Munakata K.、Masuda Y.、Iwai K.、Rockenbach M.、Dal Lago A.、R. S. Mendonca R.、Echer E.、V. Bageston J.、R. Braga C.、K. Al Jassar H.、M. Sharma M.、L. Duldig M.、E. Humble J.、Kadokura A.、Kataoka R.、Miyake S.、Sabbah I.、Mangeard P.-S.、Kuwabara T.、Evenson P.
    • Journal Title

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

      Volume: - Pages: 1279-1279

    • DOI

      10.22323/1.444.1279

    • Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-22KK0049
  • [Journal Article] Rigidity dependence of long-term cosmic ray variation2023

    • Author(s)
      Kato Chihiro、Munakata Kazuoki、Kataoka Ryuho、Miyake Shoko、Kozai Masayoshi、Hayashi Yuki、Masuda Yoshiki、Matsumoto Mizuki
    • Journal Title

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

      Volume: - Pages: 1277-1277

    • DOI

      10.22323/1.444.1277

    • Open Access
    • Data Source
      KAKENHI-PROJECT-22KK0049
  • [Journal Article] Local environmental effects on cosmic ray observations at Syowa Station in the Antarctic: PARMA-based snow cover correction for neutrons and machine learning approach for neutrons and muons2022

    • Author(s)
      Kataoka Ryuho、Sato Tatsuhiko、Kato Chihiro、Kadokura Akira、Kozai Masayoshi、Miyake Shoko、Murase Kiyoka、Yoshida Lihito、Tomikawa Yoshihiro、Munakata Kazuoki
    • Journal Title

      Journal of Space Weather and Space Climate

      Volume: 12 Pages: 37-37

    • DOI

      10.1051/swsc/2022033

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-22KK0049
  • [Journal Article] Statistical investigation of the large-area Si(Li) detectors mass-produced for the GAPS experiment2022

    • Author(s)
      Kozai M.、Tokunaga K.、Fuke H.、Yamada M.、Hailey C.J.、Kato C.、Kraych D.、Law M.、Martinez E.、Munakata K.、Perez K.、Rogers F.、Saffold N.、Shimizu Y.、Tokuda K.、Xiao M.
    • Journal Title

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

      Volume: 1034 Pages: 166820-166820

    • DOI

      10.1016/j.nima.2022.166820

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K14505, KAKENHI-PROJECT-22H00147
  • [Journal Article] Large-amplitude Bidirectional Anisotropy of Cosmic-Ray Intensity Observed with Worldwide Networks of Ground-based Neutron Monitors and Muon Detectors in 2021 November2022

    • Author(s)
      Munakata K.、Kozai M.、Kato C.、Hayashi Y.、Kataoka R.、Kadokura A.、et al.
    • Journal Title

      The Astrophysical Journal

      Volume: 938 Issue: 1 Pages: 30-30

    • DOI

      10.3847/1538-4357/ac91c5

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-22KK0049
  • [Journal Article] Passivation of Si(Li) detectors operated above cryogenic temperatures for space-based applications2021

    • Author(s)
      Saffold N.、Rogers F.、Xiao M.、Bhatt R.、Erjavec T.、Fuke H.、Hailey C.J.、Kozai M.、Kraych D.、Martinez E.、Melo-Carrillo C.、Perez K.、Rodriguez C.、Shimizu Y.、Smallshaw B.
    • Journal Title

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

      Volume: 997 Pages: 165015-165015

    • DOI

      10.1016/j.nima.2020.165015

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PUBLICLY-19H05198, KAKENHI-PROJECT-17H01136, KAKENHI-PROJECT-20K04002, KAKENHI-PROJECT-20K14505
  • [Journal Article] Analysis of mass-production data of the GAPS Si(Li) detectors using data-mining methods2021

    • Author(s)
      M. Kozai, K. Tokunaga, H. Fuke, T. Erjavec, C.J. Hailey, C. Kato, N. Madden, K. Munakata, K. Perez, F. Rogers, N. Saffold, Y. Shimizu, M. Xiao
    • Journal Title

      Proceedings of IEE NSS MIC 2021

      Volume: -

    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K14505
  • [Journal Article] The GAPS experiment - a search for cosmic-ray antinuclei from dark matter2020

    • Author(s)
      M. Kozai for the GAPS collaboration
    • Journal Title

      Journal of Physics: Conference Series

      Volume: 1468 Issue: 1 Pages: 1-4

    • DOI

      10.1088/1742-6596/1468/1/012049

    • Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K14313, KAKENHI-PROJECT-20K04002
  • [Journal Article] Large-area Si(Li) detectors for X-ray spectrometry and particle tracking in the GAPS experiment2019

    • Author(s)
      Rogers F.、Xiao M.、Perez K.M.、Boggs S.、Erjavec T.、Fabris L.、Fuke H.、Hailey C.J.、Kozai M.、Lowell A.、Madden N.、Manghisoni M.、McBride S.、Re V.、Riceputi E.、Saffold N.、Shimizu Y.
    • Journal Title

      Journal of Instrumentation

      Volume: 14 Issue: 10 Pages: 1-16

    • DOI

      10.1088/1748-0221/14/10/p10009

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PUBLICLY-19H05198, KAKENHI-PROJECT-17K14313, KAKENHI-PROJECT-17H01136
  • [Journal Article] Developing a mass-production model of large-area Si(Li) detectors with high operating temperatures2019

    • Author(s)
      Kozai M.、Fuke H.、Yamada M.、Perez K.、Erjavec T.、Hailey C.J.、Madden N.、Rogers F.、Saffold N.、Seyler D.、Shimizu Y.、Tokuda K.、Xiao M.
    • Journal Title

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

      Volume: 947 Pages: 162695-162695

    • DOI

      10.1016/j.nima.2019.162695

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PUBLICLY-19H05198, KAKENHI-PROJECT-17K14313, KAKENHI-PROJECT-17H01136
  • [Journal Article] Development of Large-area Lithium-drifted Silicon Detectors for the GAPS Experiment2018

    • Author(s)
      M. Kozai, H. Fuke, M. Yamada, T. Erjavec, C. J. Hailey, C. Kato, N. Madden, K. Munakata, K. Perez, F. Rogers, N. Saffold, Y. Shimizu, K. Tokuda and M. Xiao
    • Journal Title

      Proceedings of 2018 IEEE Nuclear Science Symposium and Medical Imaging Conference

      Volume: - Pages: 1-4

    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K14313
  • [Presentation] 大気中宇宙線生成核種Be-7の観測データセットについて2024

    • Author(s)
      櫻井敬久, 門叶冬樹, 武山美麗, 小財正義, 門倉昭
    • Organizer
      極域データサイエンスに関する研究集会 II
    • Data Source
      KAKENHI-PROJECT-22KK0049
  • [Presentation] 地上ミューオン計を用いた銀河宇宙線異方性のrigidityスペクトルの推定2024

    • Author(s)
      小財正義, 門倉昭, 片岡龍峰, 加藤千尋, 宗像一起, 三宅晶子, 櫻井敬久
    • Organizer
      日本物理学会2024年春季大会
    • Data Source
      KAKENHI-PROJECT-22KK0049
  • [Presentation] アイスランドでの宇宙線ミューオン観測へ向けた検討2023

    • Author(s)
      小財正義, 門倉昭, 片岡龍峰, 加藤千尋, 宗像一起, 三宅晶子, 櫻井敬久
    • Organizer
      日本物理学会第78回年次大会
    • Data Source
      KAKENHI-PROJECT-22KK0049
  • [Presentation] 南北異方性を用いた宇宙線モジュレーションの研究2023

    • Author(s)
      小財正義
    • Organizer
      2022年度ISEE研究集会「太陽地球環境と宇宙線モジュレーション」
    • Data Source
      KAKENHI-PROJECT-20K14505
  • [Presentation] GMDNで観測された宇宙線変動のデータマイニング手法を活用した研究2023

    • Author(s)
      Masayoshi Kozai, Yuki Hayashi, Chihiro Kato, Kazuoki Munakata, Akira Kadokura, Ryuho Kataoka, Shoko Miyake
    • Organizer
      日本地球惑星科学連合2023年大会
    • Data Source
      KAKENHI-PROJECT-22KK0049
  • [Presentation] Data mining of cosmic-ray anisotropy observed with the Global Muon Detector Network2023

    • Author(s)
      Masayoshi Kozai, Y. Hayashi, C. Kato, K. Munakata, Y. Masuda, K. Iwai, M. Rockenbach, A. Dal Lago, R. R. S. Mendonca, E. Echer, J. V. Bageston, C. R. Braga, H. K. Al Jassar, M. M. Sharma, M. L. Duldig, J. E. Humble, A. Kadokura, R. Kataoka, S. Miyake, I. Sabbah, P.-S. Mangeard, T. Kuwabara, P. Evenson
    • Organizer
      38th International Cosmic Ray Conference
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-22KK0049
  • [Presentation] DEVELOPMENT OF CONTROL AND MONITORING SYSTEM FOR THE GAPS HEAT PIPE2022

    • Author(s)
      M. Kozai, M. Saijo, K. Tokunaga, S. Okazaki, H. Fuke, A. Kawachi, Y. Shimizu
    • Organizer
      COSPAR 2022
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K14505
  • [Presentation] 地上ミューオン計ネットワークを用いた宇宙線南北異方性の解析2022

    • Author(s)
      小財正義, 宗像一起, 加藤千尋, 門倉昭, 片岡龍峰
    • Organizer
      日本物理学会 2022年秋季大会
    • Data Source
      KAKENHI-PROJECT-20K14505
  • [Presentation] ミューオン計ネットワークを用いた銀河宇宙線の南北異方性の研究2022

    • Author(s)
      小財 正義, 宗像 一起, 加藤 千尋, 門倉 昭, 片岡 龍峰
    • Organizer
      第152回 地球電磁気・地球惑星圏学会 講演会
    • Data Source
      KAKENHI-PROJECT-20K14505
  • [Presentation] 銀河宇宙線の多地点観測による南北異方性の解析2022

    • Author(s)
      小財正義、宗像一起、加藤千尋、門倉昭、片岡龍峰
    • Organizer
      日本地球惑星科学連合2022年大会
    • Data Source
      KAKENHI-PROJECT-20K14505
  • [Presentation] Development of control and monitoring system for the GAPS heat pipe2022

    • Author(s)
      M. Kozai, M. Saijo, K. Tokunaga, S. Okazaki, H. Fuke, A. Kawachi, Y. Shimizu
    • Organizer
      44th COSPAR Scientific Assembly
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K14505
  • [Presentation] 銀河宇宙線の多地点観測による南北異方性の解析2022

    • Author(s)
      小財 正義, 宗像 一起, 加藤 千尋, 門倉 昭, 片岡 龍峰
    • Organizer
      日本地球惑星科学連合2022年大会
    • Data Source
      KAKENHI-PROJECT-20K14505
  • [Presentation] GAPS実験用ヒートパイプの運用システムの開発2022

    • Author(s)
      小財正義, 西城大, 徳永翔, 岡崎峻, 福家英之, 河内明子, 小林聖平, 水野広基, 清水雄輝, 鈴木俊介
    • Organizer
      日本物理学会 第77回年次大会
    • Data Source
      KAKENHI-PROJECT-20K14505
  • [Presentation] 南極昭和基地の宇宙線計を用いた南北異方性の解析2022

    • Author(s)
      小財正義, 宗像一起, 加藤千尋, 門倉昭, 片岡龍峰, 村瀬清華, 三宅晶子, GMDN collaboration
    • Organizer
      2021年度ISEE研究集会 太陽地球環境と宇宙線モジュレーション
    • Data Source
      KAKENHI-PROJECT-20K14505
  • [Presentation] 宇宙線反粒子探索GAPS 実験の進捗報告2021

    • Author(s)
      小財正義, 他33名
    • Organizer
      日本物理学会 第 76 回年次大会
    • Data Source
      KAKENHI-PROJECT-20K14505
  • [Presentation] 宇宙線反粒子観測実験GAPSと太陽モジュレーション2021

    • Author(s)
      小財正義 for the GAPS collaboration
    • Organizer
      令和2年度ISEE合同研究集会
    • Data Source
      KAKENHI-PROJECT-20K14505
  • [Presentation] Mass production of large-area lithium-drifted silicon detectors for the GAPS silicon tracker2021

    • Author(s)
      M. Kozai, S. Tokunaga, H. Fuke, T. Erjavec, C.J. Hailey, C. Kato, N. Madden, K. Munakata, K. Perez, F. Rogers, N. Saffold, Y. Shimizu, M. Xiao
    • Organizer
      TIPP2021
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K14505
  • [Presentation] The GAPS instrument to search for low-energy cosmic antinuclei as a dark matter signature2021

    • Author(s)
      M. Kozai for the GAPS collaboration
    • Organizer
      43rd COSPAR Scientific Assembly
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K14505
  • [Presentation] Analysis of mass-production data of the GAPS Si(Li) detectors using data-mining methods2021

    • Author(s)
      M. Kozai, K. Tokunaga, H. Fuke, T. Erjavec, C.J. Hailey, C. Kato, N. Madden, K. Munakata, K. Perez, F. Rogers, N. Saffold, Y. Shimizu, M. Xiao
    • Organizer
      IEEE NSS MIC 2021
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K14505
  • [Presentation] 地上観測および気球観測による銀河宇宙線研究2021

    • Author(s)
      小財正義
    • Organizer
      極域データの保全・公開と利活用に関する研究集会-II
    • Data Source
      KAKENHI-PROJECT-20K14505
  • [Presentation] 宇宙線反粒子探索GAPS実験の現状報告 - 日本チームの進捗を中心として -2020

    • Author(s)
      小財正義 他
    • Organizer
      日本物理学会第75回年次大会
    • Data Source
      KAKENHI-PROJECT-17K14313
  • [Presentation] 宇宙線反粒子探索GAPS実験用リチウムドリフト型シリコン検出器の開発(4)2020

    • Author(s)
      小財正義,徳永翔,福家英之,T. Erjavec,C.J. Hailey,加藤千尋,N. Madden,宗像一起,K. Perez,F. Rogers,N. Saffold,清水雄輝,M. Xiao
    • Organizer
      日本物理学会2020年秋季大会
    • Data Source
      KAKENHI-PROJECT-20K14505
  • [Presentation] 宇宙線反粒子探索GAPS計画に向けたラジエータ飛翔試験(2019年度-1)2019

    • Author(s)
      小財正義, 岡崎峻, 福家英之, 吉田哲也, 西城大, 河内明子, 近藤愛美, 竹内崇人, E. Martinez, N. Saffold, F. Gahbauer, C. Hailey, W. Craig, J. Olson
    • Organizer
      2019年度大気球シンポジウム
    • Data Source
      KAKENHI-PROJECT-17K14313
  • [Presentation] 宇宙線反粒子探索GAPS実験用リチウムドリフト型シリコン検出器の開発(3)2019

    • Author(s)
      小財 正義, 福家 英之, T. Erjavec, C.J. Hailey, 加藤 千尋, N. Madden, 宗像 一起, K. Perez, F. Rogers, N. Saffold, 清水 雄輝, M. Xiao
    • Organizer
      日本物理学会第74回年次大会
    • Data Source
      KAKENHI-PROJECT-17K14313
  • [Presentation] The GAPS experiment - a search for cosmic-ray antinuclei from dark matter2019

    • Author(s)
      M. Kozai for the GAPS collaboration
    • Organizer
      The 16th International Conference on Topics in Astroparticle and Underground Physics
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K14313
  • [Presentation] 宇宙線反粒子探索GAPS実験用リチウムドリフト型シリコン検出器の開発(2)2018

    • Author(s)
      小財正義, 福家英之, 清水雄輝, 宗像一起, 加藤千尋, Charles J. Hailey, Kerstin Perez
    • Organizer
      日本物理学会2018年秋季大会
    • Data Source
      KAKENHI-PROJECT-17K14313
  • [Presentation] Development of Large-area Lithium-drifted Silicon Detectors for the GAPS Experiment2018

    • Author(s)
      M. Kozai, H. Fuke, M. Yamada, T. Erjavec, C. J. Hailey, C. Kato, N. Madden, K. Munakata, K. Perez, F. Rogers, N. Saffold, Y. Shimizu, K. Tokuda and M. Xiao
    • Organizer
      2018 IEEE Nuclear Science Symposium and Medical Imaging Conference
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K14313
  • [Presentation] 宇宙線反粒子探索GAPS実験用リチウムドリフト型シリコン検出器の開発2018

    • Author(s)
      小財正義, 福家英之, 清水雄輝, 宗像一起, 加藤千尋, C. J. Hailey, K. Perez
    • Organizer
      第18回宇宙科学シンポジウム
    • Data Source
      KAKENHI-PROJECT-17K14313
  • [Presentation] 宇宙線反粒子探索GAPS実験用リチウムドリフト型シリコン検出器の開発2017

    • Author(s)
      小財正義, 福家英之, 清水雄輝, 宗像一起, 加藤千尋, C. J. Hailey, K. Perez
    • Organizer
      日本物理学会2017年秋季大会
    • Data Source
      KAKENHI-PROJECT-17K14313
  • 1.  門倉 昭 (70185883)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 8 results
  • 2.  片岡 龍峰 (90462671)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 8 results
  • 3.  南山 泰之 (30974117)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 4.  阿部 修司 (60437762)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 5.  新原 俊樹 (80964824)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 6.  甲斐 尚人 (90940148)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 7.  福家 英之
    # of Collaborated Projects: 0 results
    # of Collaborated Products: 3 results

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