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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

      PTEP

      Volume: 2019 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

      Phys. Rev. Lett.

      Volume: 121 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 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 Pages: 011102-011102

    • DOI

      10.1103/physrevd.96.011102

    • NAID

      120006537144

    • 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

      Phys. Rev. D

      Volume: 93 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: 2022-11-04  

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