• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Development of Intermediate Water Cherenkov Detector for Precise Neutrino Osillation Experiment

Research Project

Project/Area Number 20H01912
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 15020:Experimental studies related to particle-, nuclear-, cosmic ray and astro-physics
Research InstitutionTokyo Institute of Technology

Principal Investigator

Kuze Masahiro  東京工業大学, 理学院, 教授 (00225153)

Co-Investigator(Kenkyū-buntansha) 鈴木 州  神戸大学, 理学研究科, 講師 (20243298)
石塚 正基  東京理科大学, 創域理工学部先端物理学科, 教授 (40533196)
西村 康宏  慶應義塾大学, 理工学部(矢上), 准教授 (40648119)
石田 卓  大学共同利用機関法人高エネルギー加速器研究機構, 素粒子原子核研究所, 講師 (70290856)
角野 秀一  東京都立大学, 理学研究科, 教授 (70376698)
HARTZ MARK  東京大学, カブリ数物連携宇宙研究機構, 准教授 (70721702)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2022: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2020: ¥7,150,000 (Direct Cost: ¥5,500,000、Indirect Cost: ¥1,650,000)
Keywordsニュートリノ / 水チェレンコフ検出器 / ハイパーカミオカンデ / J-PARC / IWCD / ニュートリノ振動
Outline of Research at the Start

2027年に稼働開始予定の次世代ニュートリノ観測装置ハイパーカミオカンデへ向けて、東海村J-PARCからの強度化したニュートリノビームを打ち込むT2HK実験では、前人未到の精度でニュートリノ振動現象を測定し、宇宙の物質反物質の非対称性に迫る「レプトンにおけるCP対称性の破れ」を世界で初めて発見しようとしています。この精密測定を達成するため、ニュートリノ発生点から1~2kmの地点に小型の検出器を建設し、立坑の中で上下に昇降させながらビームによる反応を高統計で測定する中間距離水チェレンコフ検出器「IWCD」計画が提案されています。本研究はIWCDの建設へ向けた開発・設計を行います。

Outline of Final Research Achievements

We have carried out a development of intermediate water Cherenkov detector (IWCD). IWCD will employ multi-PMT module consisting of 19 3-inch PMTs for the precision measurement. During the research period, we conducted performance evaluation tests to the PMTs used in the multi-PMT module including the effects of geomagnetic field. We have identified existence of after-pulse, which is then suppressed by the improvement of the design. Currently, fabrication of the multi PMT modules is underway by the international collaboration. We have also developed algorithm to selection neutrino interactions in IWCD by the simulation studies. Furthermore, we have established the conceptual design of the moving system of the detector, a key technology of IWCD, with the experts of mechanical design.

Academic Significance and Societal Importance of the Research Achievements

本研究の成果により、中間距離水チェレンコフ検出器(IWCD)の基幹技術である光センサー(マルチPMT)の開発と水槽上下機構を含む検出器の概念設計が進み、その実現性が高められた。IWCD研究グループでは、これらの成果をもとに、IWCDの実証試験としてCERNで行われるビームテストに向けてマルチPMTの製作を開始し、検出器の詳細な設計にも着手している。将来的には、IWCD検出器の実現により、ハイパーカミオカンデにおけるニュートリノ振動測定の精度が向上し、ニュートリノにおけるCP対称性の破れの発見が期待される。

Report

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

    (30 results)

All 2022 2021 2020 Other

All Int'l Joint Research (6 results) Journal Article (2 results) Presentation (20 results) (of which Int'l Joint Research: 7 results,  Invited: 3 results) Remarks (1 results) Funded Workshop (1 results)

  • [Int'l Joint Research] TRIUMF(カナダ)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] INFN-Napoli(イタリア)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] TRIUMF(カナダ)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] INFN Napoli(イタリア)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] TRIUMF(カナダ)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] INFN Napoli(イタリア)

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Performance evaluation of 3 inch PMT for Hyper-Kamiokande2022

    • Author(s)
      T. Kinoshita
    • Journal Title

      J. Phys.: Conf. Ser.

      Volume: 2156 Issue: 1 Pages: 012191-012191

    • DOI

      10.1088/1742-6596/2156/1/012191

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Evaluation of event reconstruction with small-scale water Cherenkov detectors2022

    • Author(s)
      K. Yamauchi
    • Journal Title

      J. Phys.: Conf. Ser.

      Volume: 2156 Issue: 1 Pages: 012199-012199

    • DOI

      10.1088/1742-6596/2156/1/012199

    • Related Report
      2021 Annual Research Report
  • [Presentation] Poster: Evaluation of the effect of a geomagnetic field on the performance of photomultiplier tube for multi-PMT2022

    • Author(s)
      S. Nakanishi
    • Organizer
      The 21st international workshop on Next Generation Nucleaon Decay and Neutrino Detectors (NNN22)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Poster: Evaluation of the effect of a geomagnetic field on the performance of photomultiplier tube for multi-PMT2022

    • Author(s)
      中西俊輔
    • Organizer
      新学術領域「ニュートリノで拓く素粒子と宇宙」研究会
    • Related Report
      2022 Annual Research Report
  • [Presentation] マルチPMTに使用する光電子増倍管の磁場中での性能評価2022

    • Author(s)
      中西俊輔
    • Organizer
      日本物理学会 2022年秋季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] ハイパーカミオカンデに向けた3インチ光電子増倍管と読出回路の検出性能評価2022

    • Author(s)
      岡崎玲大
    • Organizer
      日本物理学会2022年秋季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] ハイパーカミオカンデ光検出精度向上のための8 cm径光電子増倍管の評価2022

    • Author(s)
      佐々木 鳳杜
    • Organizer
      新学術領域「ニュートリノで拓く素粒子と宇宙」研究会
    • Related Report
      2021 Annual Research Report
  • [Presentation] A 50 ton Water Cherenkov Light Test Platform in a Charged Particle Test Beam2021

    • Author(s)
      M. Hartz
    • Organizer
      Snowmass IF9 Test and Calibration Beams and Irradiation Facilities Workshop
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] An Intermediate Water Cherenkov Detector for Hyper-Kamiokande Using the NuPRISM Concept2021

    • Author(s)
      M. Hartz
    • Organizer
      The European Physical Society Conference on High Energy Physics (EPS-HEP)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Performance evaluation of 3-inch PMT for Hyper-Kamiokande (Poster)2021

    • Author(s)
      T. Kinoshita
    • Organizer
      17th International Conference on Topics in Astroparticle and Underground Physics
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 小型水チェレンコフ検出器における事象再構成の性能評価2021

    • Author(s)
      山内航輝
    • Organizer
      日本物理学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] マルチPMTに使用する3インチPMTの性能評価および水チェレンコフ検出器における測定性能への影響2021

    • Author(s)
      木下達志
    • Organizer
      日本物理学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] ニュートリノビームの精密測定2021

    • Author(s)
      石塚正基
    • Organizer
      日本物理学会 第76回年次大会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] ハイパーカミオカンデ前置水チェレンコフ検出器に用いる3インチ光電子増倍管の性能評価2021

    • Author(s)
      木下達志
    • Organizer
      日本物理学会 第76回年次大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] ハイパーカミオカンデ前置水チェレンコフ検出器で用いる3インチ光電子増倍管の磁場中における特性の研究2021

    • Author(s)
      井元道貴
    • Organizer
      日本物理学会 第76回年次大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] ハイパーカミオカンデのための新型光検出器の光学リフレクタの開発2021

    • Author(s)
      佐島伊紗雄
    • Organizer
      日本物理学会 第76回年次大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Hyper-Kamiokande2020

    • Author(s)
      M. Ishitsuka
    • Organizer
      The XXIX International Conference on Neutrino Physics and Astrophysics
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Near Detectors for the Hyper-K Experiment2020

    • Author(s)
      M. Hartz
    • Organizer
      40th International Conference on High Energy Physics (ICHEP)
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Neutrino Oscillations at the T2K and Hyper-Kamiokande Experiments2020

    • Author(s)
      M. Hartz
    • Organizer
      Canadian Association of Physicists Congress
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ポスター発表: Performance evaluation of 3-inch photomultiplier tube used for Hyper-Kamiokande intermediate water Cherenkov detector2020

    • Author(s)
      木下達志
    • Organizer
      新学術領域「ニュートリノで拓く素粒子と宇宙」研究会
    • Related Report
      2020 Annual Research Report
  • [Presentation] ポスター発表: Evaluation of event reconstruction with 100 ton to 1,000 ton scale water Cherenkov detectors2020

    • Author(s)
      山内航輝
    • Organizer
      新学術領域「ニュートリノで拓く素粒子と宇宙」研究会
    • Related Report
      2020 Annual Research Report
  • [Presentation] ポスター発表: Electric-field dependence of dark noise in a photomultiplier tube2020

    • Author(s)
      前川雄音
    • Organizer
      新学術領域「ニュートリノで拓く素粒子と宇宙」研究会
    • Related Report
      2020 Annual Research Report
  • [Remarks] WCTE proposal (CERN Document Server)

    • URL

      https://cds.cern.ch/record/2712416?ln=ja

    • Related Report
      2020 Annual Research Report
  • [Funded Workshop] Water Cherenkov Test Experiment Workshop2020

    • Related Report
      2020 Annual Research Report

URL: 

Published: 2020-04-28   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi