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Precision measurements of neutrino-nucleus interaction towards understanding of neutrino mixing matrix

Research Project

Project/Area Number 26247034
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionThe University of Tokyo

Principal Investigator

YOKOYAMA Masashi  東京大学, 大学院理学系研究科(理学部), 教授 (90362441)

Co-Investigator(Kenkyū-buntansha) 南野 彰宏  横浜国立大学, 大学院工学研究院, 准教授 (70511674)
Project Period (FY) 2014-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥40,170,000 (Direct Cost: ¥30,900,000、Indirect Cost: ¥9,270,000)
Fiscal Year 2018: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2017: ¥9,360,000 (Direct Cost: ¥7,200,000、Indirect Cost: ¥2,160,000)
Fiscal Year 2016: ¥9,360,000 (Direct Cost: ¥7,200,000、Indirect Cost: ¥2,160,000)
Fiscal Year 2015: ¥8,580,000 (Direct Cost: ¥6,600,000、Indirect Cost: ¥1,980,000)
Fiscal Year 2014: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Keywordsニュートリノ / 反応断面積 / 粒子検出器 / ニュートリノ振動 / 粒子測定器 / MPPC / 素粒子実験 / 素粒子物理 / 素粒子 / 光検出器
Outline of Final Research Achievements

In order to reduce systematic uncertainties in T2K long-baseline neutrino oscillation experiment, a new detector for measuring neutrino interactions is designed and built to better control the uncertainties of the neutrino-nucleus cross sections. A method to reduce systematic uncertainties by measuring interactions with water and scintillator targets and taking their ratio was established. The difference in interaction cross-sections due to different target nuclei was measured with an accuracy of better than 10%.

Academic Significance and Societal Importance of the Research Achievements

ニュートリノ振動の測定精度を向上させるために,格子状に組み合わせ薄型のプラスチックシンチレーターを水中につけ,水とニュートリノの反応を測定する新型のニュートリノ測定装置を開発した。WAGASCI検出器と名付けられたこの装置をJ-PARC加速器施設のニュートリノビームラインに設置してニュートリノ反応を測定し,水標的とシンチレーター標的での原子核の違いによる反応断面積の差を10%以下の精度で測定した。

Report

(6 results)
  • 2019 Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • 2015 Annual Research Report
  • 2014 Annual Research Report
  • Research Products

    (53 results)

All 2019 2018 2017 2016 2015 2014 Other

All Int'l Joint Research (15 results) Journal Article (6 results) (of which Int'l Joint Research: 6 results,  Peer Reviewed: 5 results,  Open Access: 6 results,  Acknowledgement Compliant: 1 results) Presentation (32 results) (of which Int'l Joint Research: 9 results,  Invited: 3 results)

  • [Int'l Joint Research] Ecole Polytechnique/CEA Saclay(フランス)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Institute for Nuclear Physics(ロシア連邦)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] University of Geneva/CERN(スイス)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Ecole Polytechnique/CEA Saclay(フランス)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] Institute for Nuclear Physics(ロシア連邦)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] University of Geneva(スイス)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] Ecole Polytechnique(フランス)

    • Related Report
      2016 Annual Research Report
  • [Int'l Joint Research] Institute for Nuclear Physics(ロシア連邦)

    • Related Report
      2016 Annual Research Report
  • [Int'l Joint Research] University of Geneva(スイス)

    • Related Report
      2016 Annual Research Report
  • [Int'l Joint Research] Ecole Polytechnique(フランス)

    • Related Report
      2015 Annual Research Report
  • [Int'l Joint Research] Institute for Nuclear Physics(ロシア連邦)

    • Related Report
      2015 Annual Research Report
  • [Int'l Joint Research] Fermi National Accelerator Laboratory(米国)

    • Related Report
      2015 Annual Research Report
  • [Int'l Joint Research] Ecole Polytechnique(フランス)

    • Related Report
      2014 Annual Research Report
  • [Int'l Joint Research] Institute for Nuclear Physics(ロシア連邦)

    • Related Report
      2014 Annual Research Report
  • [Int'l Joint Research] Fermi National Accelerator Laboratory(米国)

    • Related Report
      2014 Annual Research Report
  • [Journal Article] Measurement of the muon neutrino charged-current cross sections on water, hydrocarbon and iron, and their ratios, with the T2K on-axis detectors2019

    • Author(s)
      K. Abe, T. Ishida, Y. Oyama et al.
    • Journal Title

      Progress of Theoretical and Experimental Physics

      Volume: 2019 Issue: 9 Pages: 1-30

    • DOI

      10.1093/ptep/ptz070

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Search for CP violation in Neutrino and Antineutrino Oscillations by the T2K experimen with 2.2x10^21 protons on target2018

    • Author(s)
      K.Abe, T.Ishida, Y.Oyama et al
    • Journal Title

      Physical Review Letters

      Volume: 121 Issue: 17 Pages: 171802-171802

    • DOI

      10.1103/physrevlett.121.171802

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Combined Analysis of Neutrino and Antineutrino Oscillations at T2K2017

    • Author(s)
      T. Nakaya, M. Yokoyama and the T2K Collaboration
    • Journal Title

      Phys. Rev. Lett

      Volume: 118 Issue: 15 Pages: 151801-151801

    • DOI

      10.1103/physrevlett.118.151801

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Updated T2K measurements of muon neutrino and antineutrino disappearance using 1.5×10^21 protons on target2017

    • Author(s)
      T. Nakaya, T. Nakadaira, A.K. Ichikawa, Y. Seiya 他 (T2K Collaboration 約300名)
    • Journal Title

      Phys. Rev. D

      Volume: 96 Issue: 1 Pages: 011102-011102

    • DOI

      10.1103/physrevd.96.011102

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Measurement of the muon neutrino inclusive charged-current cross section in the energy range of 1-3 GeV with the T2K INGRID detector2016

    • Author(s)
      T. Nakaya, M. Shiozawa, and the T2K collaboration
    • Journal Title

      Physical Review D

      Volume: 93 Issue: 7 Pages: 072002-072002

    • DOI

      10.1103/physrevd.93.072002

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Water/CH Neutrino Cross Section Measurement at J-PARC (WAGASCI Experiment)2015

    • Author(s)
      T. Koga, N. Chikuma, F. Hosomi, M. Yokoyama et al.
    • Journal Title

      JPS Conf.Proc.

      Volume: 8 Pages: 023003-023003

    • DOI

      10.7566/jpscp.8.023003

    • Related Report
      2014 Annual Research Report
    • Open Access / Int'l Joint Research
  • [Presentation] ニュートリノ検出器WAGASCI用エレクトロニクスの性能試験2019

    • Author(s)
      鞠谷温士
    • Organizer
      第9回高エネルギー物理春の学校
    • Related Report
      2018 Annual Research Report
  • [Presentation] T2Kニュートリノ振動実験による反電子ニュートリノ出現とCP対称性の破れの探索の最新結果2018

    • Author(s)
      横山将志
    • Organizer
      日本物理学会 2018年秋季大会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 水標的格子型検出器WAGASCIを用いた反ニュートリノビーム測定の現状2018

    • Author(s)
      竹馬匠泰
    • Organizer
      日本物理学会 2018年秋季大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] ニュートリノ検出器WAGASCIにおける時間情報取得システムの改善2018

    • Author(s)
      松下昂平
    • Organizer
      日本物理学会 2018年秋季大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Long-baseline neutrino experiments2018

    • Author(s)
      横山将志
    • Organizer
      The 39th International Conference on High Energy Physics (ICHEP2018)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] J-PARCT59実験:新検出器WAGASCI における反ニュートリノビーム測定の現状2018

    • Author(s)
      竹馬匠泰
    • Organizer
      第 72 回 日本物理学会年次大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Off-axis 角が異なる 2 つの T2K 前置検出器を用いたニュートリノ-原子核反応の測定と比較2018

    • Author(s)
      古賀太一朗
    • Organizer
      第 72 回 日本物理学会年次大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 多チャンネルの MPPC の制御読み取りに向けた SPIROC2D を用いたエレクトロニクスの開発状況及び性能評価試験2017

    • Author(s)
      田村 陸
    • Organizer
      日本物理学会 2017 年秋季大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] T2K ND280 Upgrade2017

    • Author(s)
      横山将志
    • Organizer
      11th International Workshop on Neutrino-Nucleus Scattering in the Few-GeV Region
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 水とプラスチックにおけるニュートリノ 反応断面積測定のための WAGASCI 実験2017

    • Author(s)
      細見郁直
    • Organizer
      第 23 回 素粒子物理国際研究センターシンポジウム
    • Related Report
      2016 Annual Research Report
  • [Presentation] ニュートリノ検出器 WAGASCI におけるデータ収集システムの開発2017

    • Author(s)
      竹馬匠泰
    • Organizer
      第 72 回 日本物理学会年次大会
    • Related Report
      2016 Annual Research Report
  • [Presentation] ニュートリノ検出器 WAGASCI に向けた SPIROC2D を用いた新エレクトロニクスの性能評価試験2017

    • Author(s)
      田村陸
    • Organizer
      第 72 回 日本物理学会年次大会
    • Related Report
      2016 Annual Research Report
  • [Presentation] 格子型ニュートリノ検出器 INGRID Water Module を用いた ニュートリノ・水原子核反応断面積の測定2017

    • Author(s)
      古賀太一朗
    • Organizer
      第 72 回 日本物理学会年次大会
    • Related Report
      2016 Annual Research Report
  • [Presentation] WAGASCI 実験のための新たな水モジュール検出器の建設2017

    • Author(s)
      細見郁直
    • Organizer
      第 72 回 日本物理学会年次大会
    • Related Report
      2016 Annual Research Report
  • [Presentation] ニュートリノビームを用いた水とプラスチックにおけるニュートリノ反応断面積測定のための新検出器INGRIDWaterModuleの建設2016

    • Author(s)
      古賀太一朗
    • Organizer
      日本物理学会 第71回年次大会
    • Place of Presentation
      東北学院大学(宮城県仙台市)
    • Year and Date
      2016-03-19
    • Related Report
      2015 Annual Research Report
  • [Presentation] Development of new electronics for a new detector WAGASCI2016

    • Author(s)
      田村陸
    • Organizer
      International work- shop on future potential of high intensity accelera- tors for particle and nuclear physics (HINT2016)
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The T2K Near Detector Upgrade2016

    • Author(s)
      横山将志
    • Organizer
      Workshop on Neutrino Near Detectors based on gas TPCs
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] J-PARC T59 WAGASCI 実験における 信号読出しシステムの開発2016

    • Author(s)
      竹馬匠泰
    • Organizer
      新学術領域「ニュートリノフロンティア」研究会
    • Related Report
      2016 Annual Research Report
  • [Presentation] Construction of new water module for the WAGASCI experiment2016

    • Author(s)
      細見郁直
    • Organizer
      新学術領域「ニュートリノフロンティア」研究会
    • Related Report
      2016 Annual Research Report
  • [Presentation] 新ニュートリノ検出器INGRIDWater Module で取得した宇宙線データと MC シミュレー ションとの比較結果2016

    • Author(s)
      古賀太一朗
    • Organizer
      日本物理学会 2016 年秋季大会
    • Related Report
      2016 Annual Research Report
  • [Presentation] WAGASCI 実験の信号読み出しシステム の開発2016

    • Author(s)
      竹馬匠泰
    • Organizer
      計測システム研究会 2016
    • Related Report
      2016 Annual Research Report
  • [Presentation] New Water/Plastic Muon Neutrino Cross Section Ratio Measurement at J-PARC2015

    • Author(s)
      古賀太一朗
    • Organizer
      10th International Workshop on Neutrino-Nucleus Interactions in the Few-GeV Region (NuInt15)
    • Place of Presentation
      大阪大学(大阪府吹田市)
    • Year and Date
      2015-11-16
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Performance test of new MPPC for a new neutrino detector WAGASCI2015

    • Author(s)
      細見郁直
    • Organizer
      4th International Conference on New Photo-Detectors (PhotoDet 2015)
    • Place of Presentation
      モスクワ(ロシア)
    • Year and Date
      2015-07-06
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A new experiment at J-PARC to measure the neutrino cross section ratio between water and plastic2015

    • Author(s)
      竹馬匠泰
    • Organizer
      Flavor Physics and CP Violation 2015
    • Place of Presentation
      名古屋大学(愛知県名古屋市)
    • Year and Date
      2015-05-25
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Precision neutrino cross section measurements and modeling for long-baseline oscillation experiments2015

    • Author(s)
      古賀太一朗
    • Organizer
      4th Joint workshop of the France-Japan and France-Korea International Associated Particle Physics Laboratories
    • Place of Presentation
      沖縄科学技術大学院大学(沖縄県国頭郡)
    • Year and Date
      2015-05-20
    • Related Report
      2015 Annual Research Report
  • [Presentation] 新ニュートリノ検出器 WAGASCI: J-PARCニュートリノビームを用いた水とプラスチックにおけるニュートリノ反応断面積比測定実験2015

    • Author(s)
      古賀太一朗
    • Organizer
      日本物理学会 第 70 回年次大会
    • Place of Presentation
      早稲田大学(東京都新宿区)
    • Year and Date
      2015-03-21
    • Related Report
      2014 Annual Research Report
  • [Presentation] 新ニュートリノ検出器WAGASCIのための新型MPPCの性能評価2015

    • Author(s)
      細見郁直
    • Organizer
      第21回素粒子物理国際研究センターシンポジウム
    • Place of Presentation
      岳美山荘(長野県北安曇郡白馬村)
    • Year and Date
      2015-02-08
    • Related Report
      2014 Annual Research Report
  • [Presentation] 新ニュートリノ検出器WAGASCIのための薄型プラスチックシンチレータの陽電子ビームを用いた性能評価2015

    • Author(s)
      竹馬匠泰
    • Organizer
      第21回素粒子物理国際研究センターシンポジウム
    • Place of Presentation
      岳美山荘(長野県北安曇郡白馬村)
    • Year and Date
      2015-02-08
    • Related Report
      2014 Annual Research Report
  • [Presentation] T2K 実験ニュートリノビームを用いた水とプラスチックにおけるニュートリノ荷電カレント反応断面積比測定のための新検出器WAGASCIの設計2014

    • Author(s)
      古賀太一朗
    • Organizer
      日本物理学会 2014 年秋季大会
    • Place of Presentation
      佐賀大学(佐賀県佐賀市)
    • Year and Date
      2014-09-18
    • Related Report
      2014 Annual Research Report
  • [Presentation] Water/CH Neutrino Cross Section Measurement at J-PARC2014

    • Author(s)
      古賀太一朗
    • Organizer
      J-PARC Symposium 2014
    • Place of Presentation
      つくば国際会議場(茨城県つくば市)
    • Year and Date
      2014-07-12
    • Related Report
      2014 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Detector design and R&D for Water/CH Neutrino Cross Section Measurement2014

    • Author(s)
      古賀太一朗
    • Organizer
      XXVI Conference on Neutrino Physics and Astro- physics (Neutrino 2014)
    • Place of Presentation
      ボストン(アメリカ)
    • Year and Date
      2014-06-02
    • Related Report
      2014 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ニュートリノ振動高精度測定のための H2O/CH ニュートリノ反応断面積比測定2014

    • Author(s)
      竹馬匠泰
    • Organizer
      高エネルギー物理 春の学校 2014
    • Place of Presentation
      びわこクラブ(滋賀県大津市)
    • Year and Date
      2014-05-29
    • Related Report
      2014 Annual Research Report

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Published: 2014-04-04   Modified: 2023-03-23  

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