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Application of ultra-low background techniques to astro and particle physics experiments

Planned Research

Project AreaUnraveling the History of the Universe and Matter Evolution with Underground Physics
Project/Area Number 19H05808
Research Category

Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

Allocation TypeSingle-year Grants
Review Section Science and Engineering
Research InstitutionYokohama National University

Principal Investigator

MINAMINO Akihiro  横浜国立大学, 大学院工学研究院, 教授 (70511674)

Co-Investigator(Kenkyū-buntansha) 田中 雅士  早稲田大学, 理工学術院, 主任研究員(研究院准教授) (30545497)
池田 一得  東京大学, 宇宙線研究所, 助教 (90583477)
竹田 敦  東京大学, 宇宙線研究所, 准教授 (40401286)
岩田 圭弘  国立研究開発法人日本原子力研究開発機構, 福島研究開発部門 福島研究開発拠点 廃炉環境国際共同研究センター, 研究副主幹 (20568191)
伊藤 主税  国立研究開発法人日本原子力研究開発機構, 安全・核セキュリティ統括本部, 次長 (90421768)
市村 晃一  東北大学, ニュートリノ科学研究センター, 助教 (80600064)
Project Period (FY) 2019-06-28 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥117,000,000 (Direct Cost: ¥90,000,000、Indirect Cost: ¥27,000,000)
Fiscal Year 2023: ¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2022: ¥14,040,000 (Direct Cost: ¥10,800,000、Indirect Cost: ¥3,240,000)
Fiscal Year 2021: ¥18,720,000 (Direct Cost: ¥14,400,000、Indirect Cost: ¥4,320,000)
Fiscal Year 2020: ¥14,950,000 (Direct Cost: ¥11,500,000、Indirect Cost: ¥3,450,000)
Fiscal Year 2019: ¥51,480,000 (Direct Cost: ¥39,600,000、Indirect Cost: ¥11,880,000)
Keywords極低放射能技術 / ゲルマニウム検出器 / ラドン検出器 / 環境中性子 / 希ガス微量分析 / 地下宇宙素粒子実験 / 極低放射能 / 中性子 / ラドン / ニュートリノ / 暗黒物質 / 高純度ゲルマニウム検出器 / 高感度ラドン検出器 / クリプトン / レーザー共鳴イオン化 / 二重ベータ崩壊 / 液体シンチレータ / ヘリウム3比例計数管
Outline of Research at the Start

本研究では、本領域「地下宇宙」が成功するために優先して進めるべき次の4つのテーマを、他の計画研究班と連携しながら進める。
1. 世界初の中性子バックグラウンドの体系的理解(計画研究A02、B01、B02班と連携)
2. 水やキセノンガス中からのラドン除去(計画研究A01、B01、B02、C01班と連携)
3. 低バックグラウンド材料の選定(計画研究A01、A02、B01、B02、C01、D02班と連携)
4. データベースを用いた測定結果の国内外への発信

Outline of Final Research Achievements

We developed a Ge detector with the world's lowest background level and proceeded to measure the radioactive impurity content in the detector materials of each experimental group. We also developed a radon detector for gadolinium sulfate water and started operating it with SK-Gd and XENONnT. We also measured the environmental neutron flux in the Kamioka underground laboratory for about two and a half years. Then, we measured Gd3+ luminescence in gadolinium sulfate water with laser-induced luminescence spectroscopy, demonstrating that it was not a problem for SK-Gd observations. We also set up a radioactive rare gas trace analysis device using laser resonance ionization spectroscopy. Finally, we held four workshops on Low-Background Technologies, where we exchanged information about the latest results of low-radioactivity technology development.

Academic Significance and Societal Importance of the Research Achievements

本研究の学術的意義は、本領域の各実験班が持つ世界最先端の低放射能技術を発展させ、その成果を領域全体の基盤技術としてすべての実験班に還元したことである。その結果として、各実験班が進める地下宇宙素粒子実験の探索感度向上を実現した。

Report

(6 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (114 results)

All 2024 2023 2022 2021 2020 2019 Other

All Int'l Joint Research (27 results) Journal Article (12 results) (of which Int'l Joint Research: 7 results,  Peer Reviewed: 12 results,  Open Access: 9 results) Presentation (67 results) (of which Int'l Joint Research: 9 results,  Invited: 15 results) Remarks (8 results)

  • [Int'l Joint Research] Boston University/University of California, Irvine/California State University(米国)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Imperial College London/King's College London/University of Liverpool(英国)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Chonnam National University/Gwangju Insti. of Science and Technology/Seoul National University(韓国)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] University of Toronto/TRIUMF/University of Winnipeg(カナダ)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] INFN Sezione di Bari/INFN Sezione di Napoli/INFN SeZione di Padova(イタリア)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Boston University/University of California, Irvine/California State University(米国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Imperial College London/King's College London/University of Liverpool(英国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Chonnam National University/Gwangju Insti. of Science and Technology/Seoul National University(韓国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] University of Toronto/TRIUMF/University of Winnipeg(カナダ)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] INFN Sezione di Bari/INFN Sezione di Napoli/INFN Sezione di Padova(イタリア)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Boston University/University of California, Irvine/California State University(米国)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] Imperial College London/King's College London/University of Liverpool(英国)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] Chonnam National University/Gwangju Insti. of Science and Technology/Seoul National University(韓国)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] University of Tronto/TRIUMF/University of Winnipeg(カナダ)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] INFN Sezione di Bari/INFN Sezione di Napoli/INFN Sezione di Padova(イタリア)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] Boston University/University of California, Irvine/California State University(米国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Imperial College London/King's College London/University of Liverpool(英国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Chonnam National University/Gwangju Insti. of Science and Technology/Seoul National University(韓国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] University of Tronto/TRIUMF/University of Winnipeg(カナダ)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] INFN Sezione di Bari/INFN Sezione di Napoli/INFN Sezione di Padova(イタリア)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research]

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Boston University/University of California, Irvine/California State University(米国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Imperial College London/King's College London/University of Liverpool(英国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Chonnam National University/Gwangju Insti. of Science and Technology/Seoul National University(韓国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] University of Tronto/TRIUMF/University of Winnipeg(カナダ)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] INFN Sezione di Bari/INFN Sezione di Napoli/INFN Sezione di Padova(イタリア)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research]

    • Related Report
      2019 Annual Research Report
  • [Journal Article] A method to measure the quenching factor for recoil energy of oxygen in bismuth germanium oxide scintillators2023

    • Author(s)
      Ommura Yuga、Ito Hiroshi、Yano Takatomi、Minamino Akihiro、Ishitsuka Masaki
    • Journal Title

      Journal of Instrumentation

      Volume: 18 Issue: 04 Pages: T04006-T04006

    • DOI

      10.1088/1748-0221/18/04/t04006

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Analyzing the neutron and γ-ray emission properties of an americium?beryllium tagged neutron source2023

    • Author(s)
      Ito Hiroshi、Wada Kohei、Yano Takatomi、Hino Yota、Ommura Yuga、Harada Masayuki、Minamino Akihiro、Ishitsuka Masaki
    • Journal Title

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

      Volume: 1057 Pages: 168701-168701

    • DOI

      10.1016/j.nima.2023.168701

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Development of a low-background HPGe detector at Kamioka Observatory2023

    • Author(s)
      Ichimura K、Ikeda H、Kishimoto Y、Kurasawa M、Suzuki A A、Gando Y、Ikeda M、Hosokawa K、Sekiya H、Ito H、Minamino A、Suzuki S
    • Journal Title

      Progress of Theoretical and Experimental Physics

      Volume: 2023 Issue: 12

    • DOI

      10.1093/ptep/ptad136

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Development of ultra-pure gadolinium sulfate for the Super-Kamiokande gadolinium project2023

    • Author(s)
      K.Hosokawa 他
    • Journal Title

      Progress of Theoretical and Experimental Physics

      Volume: 2023 Issue: 1 Pages: 1-21

    • DOI

      10.1093/ptep/ptac170

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Emission characteristics of gadolinium ions in a water Cherenkov detector2022

    • Author(s)
      Iwata Y、Sekiya H、Ito C
    • Journal Title

      Progress of Theoretical and Experimental Physics

      Volume: 2022 Issue: 12

    • DOI

      10.1093/ptep/ptac157

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] First gadolinium loading to Super-Kamiokande2022

    • Author(s)
      Abe K et al., The Super-Kamioknade collaboration
    • Journal Title

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

      Volume: 1027 Pages: 166248-166248

    • DOI

      10.1016/j.nima.2021.166248

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] What is a breakdown of continuous component hidden under 4.4-MeV gamma-ray peak from the AmBe source?2021

    • Author(s)
      Wada Kohei、Minamino Akihiro、Ito Hiroshi、Ommura Yuga、Ishitsuka Masaki、Yano Takatomi
    • Journal Title

      Journal of Physics: Conference Series

      Volume: 2156 Issue: 1 Pages: 012209-012209

    • DOI

      10.1088/1742-6596/2156/1/012209

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Improved method for measuring low-concentration radium and its application to the Super-Kamiokande Gadolinium project2020

    • Author(s)
      Ito S、Ichimura K、Takaku Y、Abe K、Harada M、Ikeda M、Ito H、Kishimoto Y、Nakajima Y、Okada T、Sekiya H
    • Journal Title

      Progress of Theoretical and Experimental Physics

      Volume: 2020 Issue: 9

    • DOI

      10.1093/ptep/ptaa105

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Evaluation of radon adsorption efficiency values in xenon with activated carbon fibers2020

    • Author(s)
      Nakano Y、Ichimura K、Ito H、Okada T、Sekiya H、Takeuchi Y、Tasaka S、Yamashita M
    • Journal Title

      Progress of Theoretical and Experimental Physics

      Volume: 2020 Issue: 11

    • DOI

      10.1093/ptep/ptaa119

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Development of low-background photomultiplier tubes for liquid xenon detectors2020

    • Author(s)
      Abe K..他 XMASS collaboration
    • Journal Title

      Journal of Instrumentation

      Volume: 15 Issue: 09 Pages: P09027-P09027

    • DOI

      10.1088/1748-0221/15/09/p09027

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Devvelopment of low radioactivity photomultiplier tubes for the XMASS-I detector2019

    • Author(s)
      K. Abe(1番目), K. Ichimura (3番目), Y. Kishimoto (4番目), K. Kobayashi (5番目), H. Ogawa (10番目), et al (XMASS collaboration, 計41名)
    • Journal Title

      Nuclear Inst. And Methods in Physics Research A

      Volume: A119 Pages: 171-176

    • DOI

      10.1016/j.nima.2018.12.083

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Development of a time projection chamber with a sheet-resistor field cage2019

    • Author(s)
      Miuchi Kentaro、Ikeda Tomonori、Ishiura Hirohisa、Nakamura Kiseki D、Takada Atsushi、Homma Yasuhiro、Abe Ko、Ichimura Koichi、Ito Hiroshi、Kobayashi Kazuyoshi、Nakamura Takuma、Ueno Ryuichi、Shimada Takuya、Hashimoto Takashi、Yakabe Ryota、Ochi Atsuhiko
    • Journal Title

      Progress of Theoretical and Experimental Physics

      Volume: 2019 Issue: 6 Pages: 1-12

    • DOI

      10.1093/ptep/ptz048

    • NAID

      120006716625

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 極低放射能ゲルマニウム検出器の構築と運用2024

    • Author(s)
      市村晃一
    • Organizer
      第9回極低放射能技術研究会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 高感度ラドン濃度自動測定装置の開発とイオン交換樹脂のラジウム除去率の評価2024

    • Author(s)
      兼村侑希
    • Organizer
      第9回極低放射能技術研究会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 高感度ラドン検出器の最近の進展2024

    • Author(s)
      中野佑樹
    • Organizer
      第9回極低放射能技術研究会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] レーザーを用いた水中Gd3+イオン発光分光と可搬型濃度モニターへの応用2024

    • Author(s)
      岩田圭弘
    • Organizer
      第9回極低放射能技術研究会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] ヘリウム3比例計数管を用いた神岡地下実験施設の環境中性子の長期測定と中性子輸送シミュレーションの精度の理解に向けた研究2024

    • Author(s)
      天内昭吾
    • Organizer
      第9回極低放射能技術研究会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 神岡における雨・雪・地下水の観測2024

    • Author(s)
      鷲見貴生
    • Organizer
      第9回極低放射能技術研究会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 液体シンチレーター中性子検出器の低バックグラウンド化2024

    • Author(s)
      田中雅士
    • Organizer
      第9回極低放射能技術研究会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Low background technologies for astroparticle experiments2024

    • Author(s)
      Akihiro Minamino
    • Organizer
      Unraveling the History of the Universe and Matter Evolution with Underground Physics 2024
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Kamioka Lightning&Thundercloud observation and its application for the astroparticle experiments2024

    • Author(s)
      Tatsuki Washimi
    • Organizer
      Unraveling the History of the Universe and Matter Evolution with Underground Physics 2024
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] CF4ガス発光を用いた表面アルファ線イメージ分析装置感度向上の研究(2)2024

    • Author(s)
      伊藤博士
    • Organizer
      日本物理学会 2024年春季大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] ヘリウム3比例計数管を用いた神岡地下実験施設の環境中性子の長期測定と中性子輸送シミュレーションの精度の理解に向けた研究2024

    • Author(s)
      天内昭吾
    • Organizer
      日本物理学会 2024年春季大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] CF4ガス発光(S1, S2)を用いた表面アルファ線イメージ分析装置感度向上の研究2023

    • Author(s)
      伊藤博士
    • Organizer
      日本物理学会 第78回年次大会(2023年)
    • Related Report
      2023 Annual Research Report
  • [Presentation] Rn濃度自動測定装置の開発とスーパーカミオカンデ水純化装置用イオン交換樹脂の228Ra除去率の評価2023

    • Author(s)
      兼村侑希
    • Organizer
      日本物理学会 第78回年次大会(2023年)
    • Related Report
      2023 Annual Research Report
  • [Presentation] 超高純度硫酸ガドリニウム・8水和物中Ra-226濃度の高速測定2023

    • Author(s)
      細川佳志
    • Organizer
      日本物理学会 第78回年次大会(2023年)
    • Related Report
      2023 Annual Research Report
  • [Presentation] 地下宇宙素粒子物理学実験のための低バックグランド液体シンチレーター中性子検出器の開発2023

    • Author(s)
      南野彰宏
    • Organizer
      2022年度ERAN年次報告会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 神岡地下観測所における中性子フラックスの測定2023

    • Author(s)
      南野彰宏
    • Organizer
      2022年度東京大学宇宙線研究所共同利用成果発表会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 神岡地下実験室極低放射能ゲルマニウム検出器のバッググラウンドシミュレーションによる評価2023

    • Author(s)
      鈴木芹奈
    • Organizer
      日本物理学会2023年春季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 液体シンチレータ検出器の極低バックグラウンド下に向けた液体シンチレータ純化能力の評価2023

    • Author(s)
      岩澤広大
    • Organizer
      日本物理学会第78回年次大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] ヘリウム3比例計数管を用いた神岡地下実験施設の環境中性子の長期測定とその結果の理解に向けた研究2023

    • Author(s)
      天内昭吾
    • Organizer
      日本物理学会 2023年春季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 地震予知に向けたラドン検出装置の開発2023

    • Author(s)
      島村蓮
    • Organizer
      日本物理学会 2023年春季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Development of high sensitivity radon detector in water2022

    • Author(s)
      Atsushi Takeda
    • Organizer
      Unraveling the History of the Universe and Matter Evolution with Underground Physics
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A study on the emission characteristics of gadolinium ions in a water Cherenkov detector2022

    • Author(s)
      Yoshihiro Iwata
    • Organizer
      Unraveling the History of the Universe and Matter Evolution with Underground Physics
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 神岡地下実験室の極低放射能ゲルマニウム検出器におけるバッググラウンドの理解2022

    • Author(s)
      鈴木芹奈
    • Organizer
      日本物理学会2022年秋季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 高感度水中ラドン検出器の開発2022

    • Author(s)
      竹田敦
    • Organizer
      日本物理学会2022年秋季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 低バックグラウンド下における液体シンチレータ検出器の環境中性子測定データの解析結果2022

    • Author(s)
      岩澤広大
    • Organizer
      日本物理学会 2022年秋季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 水チェレンコフ検出器におけるGd3+イオン発光の影響評価2022

    • Author(s)
      岩田圭弘
    • Organizer
      日本物理学会2022年秋季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] ヘリウム3比例計数管を用いた神岡地下実験施設の環境中性子の長期測定2022

    • Author(s)
      天内昭吾
    • Organizer
      日本物理学会 2022年秋季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 地下宇宙素粒子実験のための極低放射能技術2022

    • Author(s)
      南野彰宏
    • Organizer
      日本物理学会 2022年秋季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 地下宇宙素粒子物理学実験のための低バックグランド液体シンチレーター中性子検出器の開発2022

    • Author(s)
      南野彰宏
    • Organizer
      2022年度ERANキックオフミーティング
    • Related Report
      2022 Annual Research Report
  • [Presentation] 神岡地下実験室の極低放射能ゲルマニウム検出器におけるバッググラウンドの理解2022

    • Author(s)
      鈴木芹奈
    • Organizer
      第3回新学術「地下宇宙」若手研究会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 3He比例計数管を用いた神岡地下実験施設における環境中性子の長期測定2022

    • Author(s)
      天内昭吾
    • Organizer
      第3回新学術「地下宇宙」若手研究会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 地震予知に向けたラドン検出器の開発2022

    • Author(s)
      島村蓮
    • Organizer
      第3回新学術「地下宇宙」若手研究会
    • Related Report
      2022 Annual Research Report
  • [Presentation] D01班: 神岡Geスクリーニング2022

    • Author(s)
      市村晃一
    • Organizer
      「第8回極低放射能技術」研究会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] D01班: レーザーを用いた水中のGd3+イオン発光特性の評価2022

    • Author(s)
      岩田圭弘
    • Organizer
      「第8回極低放射能技術」研究会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 神岡地下観測所における中性子フラックスの測定2022

    • Author(s)
      南野彰宏
    • Organizer
      東京大学宇宙線研究所共同利用成果発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 硫酸Gd水溶液中におけるGd3+イオン発光寿命の測定2022

    • Author(s)
      岩田圭弘
    • Organizer
      日本物理学会第77回年次大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 神岡地下環境中性子測定に向けた液体シンチレータ容器の低バックグラウンド化2022

    • Author(s)
      岩澤広大
    • Organizer
      日本物理学会第77回年次大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] NaI(Tl)シンチレーター検出器を用いたAmBe線源の中性子に関する研究2022

    • Author(s)
      和田航平
    • Organizer
      日本物理学会第77回年次大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Development of high-sensitivity radon detector in water for neutrino physics2021

    • Author(s)
      Atsushi Takeda
    • Organizer
      17th International Conference on Topics in Astroparticle and Underground Physics
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] What is a breakdown of continuous component hidden under 4.4-MeV gamma-ray peak from the AmBe source2021

    • Author(s)
      Kohei Wada
    • Organizer
      17th International Conference on Topics in Astroparticle and Underground Physics
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 高感度水中ラドン検出器の開発2021

    • Author(s)
      竹田敦
    • Organizer
      日本物理学会 2021年秋季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 地下宇宙素粒子実験のためのAmBe中性子線源の研究2021

    • Author(s)
      和田航平
    • Organizer
      日本物理学会 2021年秋季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 液体シンチレータを用いた神岡地下環境における中性子フラックス測定2021

    • Author(s)
      岩澤広大
    • Organizer
      日本物理学会 2021年秋季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 極低放射能ゲルマニウム検出器のシミュレーションによる性能評価2021

    • Author(s)
      鈴木芹奈
    • Organizer
      日本物理学会 2021年秋季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 地下宇宙素粒子実験のためのAmBe中性子線源の研究2021

    • Author(s)
      和田航平
    • Organizer
      第2回新学術「地下宇宙」若手研究会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 地下宇宙素粒子実験のためのAmBe中性子線源の研究2021

    • Author(s)
      和田航平
    • Organizer
      理工系創立100周年記念事業・学生参加イベント「YNU理工系合同研究シンポジウム」
    • Related Report
      2021 Annual Research Report
  • [Presentation] 発極低放射能ゲルマニウム検出器の性能評価2021

    • Author(s)
      鈴木芹奈
    • Organizer
      理工系創立100周年記念事業・学生参加イベント「YNU理工系合同研究シンポジウム」
    • Related Report
      2021 Annual Research Report
  • [Presentation] D01 計画報告2021

    • Author(s)
      竹田敦
    • Organizer
      第 7回極低放射能技術研究会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 神岡地下観測所における中性子フラックスの測定2021

    • Author(s)
      南野彰宏
    • Organizer
      令和2年度東京大学宇宙線研究所共同利用成果発表会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 高純度ゲルマニウム検出器を用いた SK-Gd 計画等のための放射性不純物量測定2021

    • Author(s)
      市村晃一
    • Organizer
      令和2年度東京大学宇宙線研究所共同利用成果発表会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Development of high-sensitivity radon detector in water with continuous measurement2020

    • Author(s)
      Atsushi Takeda
    • Organizer
      The XXIV International Conference on Neutrino Physics and Astrophysics (Neutrino 2020)
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] XENON 実験: 中性子veto内の放射性不純物モニター2020

    • Author(s)
      竹田敦
    • Organizer
      日本物理学会秋季大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 低バックグラウンド実験のための高感度水中ラドン検出器の開発2020

    • Author(s)
      竹田敦
    • Organizer
      日本物理学会秋季大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] HPGe検出器2020

    • Author(s)
      市村晃一
    • Organizer
      第6回極低放射能技術研究会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 計画研究D012020

    • Author(s)
      南野彰宏
    • Organizer
      新学術「地下宇宙」2020年度領域研究会
    • Related Report
      2020 Annual Research Report
  • [Presentation] XENONnT: 中性子vetoカウンターにおけるガドリニウム水中のRn濃度モニター2020

    • Author(s)
      竹田 敦 for the XENON collaboration
    • Organizer
      日本物理学会第75回年次大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 液体シンチレータを用いた地下環境中性子測定2020

    • Author(s)
      小津龍吉
    • Organizer
      26thICEPPSymposium
    • Related Report
      2019 Annual Research Report
  • [Presentation] 極低放射能ゲルマニウム検出器の開発2019

    • Author(s)
      市村 晃一
    • Organizer
      シンポジウム「地下から解き明かす宇宙の歴史と物質の進化」
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] XMASS実験:光電子増倍管R13111の放射性不純物量測定結果2019

    • Author(s)
      市村 晃一 for the XMASS collaboration
    • Organizer
      日本物理学会2019秋季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] XENONnT: 中性子vetoカウンターにおけるガドリニウム水中のRn濃度モニター2019

    • Author(s)
      竹田 敦 for the XENON collaboration
    • Organizer
      日本物理学会2019秋季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Radiopurity program for SuperK Gd2019

    • Author(s)
      Motoyasu Ikeda
    • Organizer
      Low Radioactivity Techniques 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 液体シンチレータと6Liドーププラスチック シンチレータを用いた中性子測定2019

    • Author(s)
      小津龍吉
    • Organizer
      第9回高エネルギー物理春の学校2019
    • Related Report
      2019 Annual Research Report
  • [Presentation] 地下環境中性子測定のための6Li添加プラスチックシンチレータの特性評価2019

    • Author(s)
      小津龍吉
    • Organizer
      日本物理学会2019年秋季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] ANKOK実験(低質量暗黒物質探索) シンチレーターとしての液体アルゴン2019

    • Author(s)
      田中雅士
    • Organizer
      SMART2019
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] 神岡地下での環境中性子測定2019

    • Author(s)
      水越 彗太
    • Organizer
      新学術「地下宇宙」領域研究会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 極低放射能技術2019

    • Author(s)
      南野彰宏
    • Organizer
      新学術「地下宇宙」領域研究会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Measurement of ambient neutrons in an underground laboratory at Kamioka Observatory2019

    • Author(s)
      Keita Mizukoshi
    • Organizer
      TAUP2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Remarks] 地下から解き明かす宇宙の歴史と物質の進化

    • URL

      https://www.lowbg.org/ugap/index.html

    • Related Report
      2023 Annual Research Report 2022 Annual Research Report 2021 Annual Research Report 2020 Annual Research Report 2019 Annual Research Report
  • [Remarks] スーパーカミオカンデ実験

    • URL

      http://www-sk.icrr.u-tokyo.ac.jp/sk/

    • Related Report
      2023 Annual Research Report
  • [Remarks] KamLAND実験

    • URL

      https://www.awa.tohoku.ac.jp/kamland/

    • Related Report
      2023 Annual Research Report
  • [Remarks] XENONnT実験

    • URL

      https://www.ipmu.jp/ja/research-activities/research-program/XENONnT

    • Related Report
      2023 Annual Research Report
  • [Remarks] スーパーカミオカンデ

    • URL

      http://www-sk.icrr.u-tokyo.ac.jp/sk/

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report 2020 Annual Research Report 2019 Annual Research Report
  • [Remarks] KamLAND

    • URL

      https://www.awa.tohoku.ac.jp/kamland/

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
  • [Remarks] XENONnt

    • URL

      https://www.ipmu.jp/ja/research-activities/research-program/XENONnT

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report 2020 Annual Research Report 2019 Annual Research Report
  • [Remarks] KAMLAND

    • URL

      https://www.awa.tohoku.ac.jp/kamland/

    • Related Report
      2020 Annual Research Report 2019 Annual Research Report

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Published: 2019-07-04   Modified: 2025-01-30  

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