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Searching for a sterile neutrino at J-PARC MLF

Research Project

Project/Area Number 16H06344
Research Category

Grant-in-Aid for Scientific Research (S)

Allocation TypeSingle-year Grants
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionHigh Energy Accelerator Research Organization

Principal Investigator

MARUYAMA Takasumi  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, 准教授 (80375401)

Co-Investigator(Kenkyū-buntansha) 川崎 健夫  北里大学, 理学部, 教授 (00323999)
末包 文彦  東北大学, ニュートリノ科学研究センター, 教授 (10196678)
嶋 達志  大阪大学, 核物理研究センター, 准教授 (10222035)
明午 伸一郎  国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 J-PARCセンター, 研究主席 (80354728)
長谷川 勝一  国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 原子力科学研究所 先端基礎研究センター, 研究主幹 (90391333)
Project Period (FY) 2016-05-31 – 2021-03-31
Project Status Discontinued (Fiscal Year 2020)
Budget Amount *help
¥182,130,000 (Direct Cost: ¥140,100,000、Indirect Cost: ¥42,030,000)
Fiscal Year 2020: ¥11,180,000 (Direct Cost: ¥8,600,000、Indirect Cost: ¥2,580,000)
Fiscal Year 2019: ¥13,130,000 (Direct Cost: ¥10,100,000、Indirect Cost: ¥3,030,000)
Fiscal Year 2018: ¥39,910,000 (Direct Cost: ¥30,700,000、Indirect Cost: ¥9,210,000)
Fiscal Year 2017: ¥56,030,000 (Direct Cost: ¥43,100,000、Indirect Cost: ¥12,930,000)
Fiscal Year 2016: ¥61,880,000 (Direct Cost: ¥47,600,000、Indirect Cost: ¥14,280,000)
Keywordsニュートリノ / ステライルニュートリノ / 液体シンチレータ
Outline of Final Research Achievements

During this grant-in-aid period, we have completed to construct the 50 tons of liquid scintillator detector in 2020 February from the scratch. The detector is installed in the J-PARC Material and Life science Facility (MLF), and started the data taking from 2020 June in spite of COVID-19 effects. The proton beam power from the J-PARC accelerator facility is 60% compared to the design value and COVID-19 affects to the delay of schedule, thus the planned results with 2 years of accumulated data have not yet been achieved, however we are performing the detector calibration and data analysis well. In addition, one of our co-I supports the beam transportation study from the accelerator to MLF to get better beam power.
With these achievements so far, we submitted the application of the “Grant-in-Aid for Specially Promoted Research” in 2020 and adopted. We are making the best effort to get and extend the good results.

Academic Significance and Societal Importance of the Research Achievements

前述のとおり、我々の実験は素粒子の標準理論では説明できない新型のニュートリノ(ステライルニュートリノ)の探索を行うことである。ステライルニュートリノの存在が確定されれば、素粒子の標準理論は覆り、また新粒子を発見したことから素粒子物理界に大きなインパクトを与えることになる。ステライルニュートリノは通常のニュートリノと違い、重力しか感じない粒子であり、その性質から間接的、もしくは直接的な暗黒物質との関係も指摘されている。この面からも存在の確定が急務で、本研究はその探索に関する結果を出す目途を付けた。

Assessment Rating
Verification Result (Rating)

A-

Assessment Rating
Result (Rating)

A: Progress in the research is steadily towards the initial goal. Expected research results are expected.

Report

(10 results)
  • 2021 Research Progress Assessment (Verification Result) ( PDF )
  • 2020 Final Research Report ( PDF )
  • 2019 Annual Research Report   Abstract(Research Progress Assessment) ( PDF )   Research Progress Assessment (Result) ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • 2016 Abstract ( PDF )   Comments on the Screening Results ( PDF )   Annual Research Report
  • Research Products

    (60 results)

All 2020 2019 2018 2017 2016 Other

All Int'l Joint Research (11 results) Journal Article (7 results) (of which Int'l Joint Research: 7 results,  Peer Reviewed: 5 results,  Open Access: 7 results) Presentation (38 results) (of which Int'l Joint Research: 18 results,  Invited: 21 results) Book (1 results) Remarks (3 results)

  • [Int'l Joint Research] ミシガン大学/ブルックヘブン国立研究所/アラバマ大学(米国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] ソウル国立大学/チョンナン大学/成均館大学(韓国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] サセックス大学(英国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] ソウル国立大学/成均館大学/全南大学(韓国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] ミシガン大学/アラバマ大学/ブルックヘブン国立研究所(米国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] サセックス大学(英国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] ミシガン大学/アラバマ大学/ブルックヘブン研究所(米国)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] サセックス大学(英国)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] ソウル国立大学/チョンナン大学/ドンシン大学(韓国)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] ソウル国立大学/全南大学/成均館大学(韓国)

    • Related Report
      2016 Annual Research Report
  • [Int'l Joint Research] ミシガン大学/アラバマ大学/ブルックヘブン国立研究所(米国)

    • Related Report
      2016 Annual Research Report
  • [Journal Article] Production and optical properties of liquid scinatillator for the JSNS2 experiment2019

    • Author(s)
      J.S.Park, S.Y.Kim, C.Rott, D.H. Lee, D.Jung, F.Suekane, H.Furuta, H.I.Jangm H.K.Jeon, I.Yu, J.H.Choi, J.S.Jang, K.K.Joo, K.W.Ju, M.Pac, P.J.Gwak, S.B.Kim, S.Hasegawa, S.H.Jeon, T.Maruyama, R.Ujiie, Y.Hino and Y.s.Park
    • Journal Title

      JINST

      Volume: 14 Issue: 09 Pages: T09010-T09010

    • DOI

      10.1088/1748-0221/14/09/t09010

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Stainless steel tank production and tests for the JSNS2 neutrino detector2019

    • Author(s)
      Y. Hino, H. Furuta, S. Hasegawa, T. Maruyama, K. Nishikawa, J.S. Park, F. Suekane, Y. Sugaya
    • Journal Title

      JINST

      Volume: 14 Issue: 09 Pages: T09001-T09001

    • DOI

      10.1088/1748-0221/14/09/t09001

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Aging study of Gd concentration in LAB-based Gd loaded liquid scintillator exposed to passivated stainless steel2019

    • Author(s)
      Y. Hino, H. Furuta, F. Suekane
    • Journal Title

      JINST

      Volume: 14 Issue: 09 Pages: P09007-P09007

    • DOI

      10.1088/1748-0221/14/09/p09007

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Technical Design Report (TDR): Searching for a Sterile Neutrino at J-PARC MLF (E56, JSNS2)2017

    • Author(s)
      S.Ajimura, et al
    • Journal Title

      arXiv

      Volume: 1705.08629 Pages: 1-91

    • Related Report
      2017 Annual Research Report
    • Open Access / Int'l Joint Research
  • [Journal Article] Searching for a Sterile Neutrino at J-PARC MLF: JSNS2 experiment2017

    • Author(s)
      J.S.Park for the JSNS2 collaboration
    • Journal Title

      Proceedings of Science

      Volume: 128 Pages: 1-4

    • DOI

      10.22323/1.314.0128

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Status Report (22th J-PARC PAC): Searching for a Sterile Neutrino at J-PARC MLF (E56, JSNS2)2016

    • Author(s)
      M.Harada, T.Maruyama, et al
    • Journal Title

      arXiv

      Volume: 1610.08186 Pages: 1-20

    • Related Report
      2016 Annual Research Report
    • Open Access / Int'l Joint Research
  • [Journal Article] Searching for a Sterile Neutrino at J-PARC MLF: JSNS2 experiment2016

    • Author(s)
      T.Maruyama
    • Journal Title

      PoS (ICHEP2016)

      Volume: 482 Pages: 1-6

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] JSNS2 experiment2020

    • Author(s)
      S.Hasegawa
    • Organizer
      JPS-KPS joint symposium
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] いよいよ始まるJSNS2実験2020

    • Author(s)
      丸山和純
    • Organizer
      日本物理学会 年次大会(2020)
    • Related Report
      2019 Annual Research Report
  • [Presentation] The JSNS2 experiment : commissioning2020

    • Author(s)
      Jungsic Park
    • Organizer
      日本物理学会 年次大会(2020)
    • Related Report
      2019 Annual Research Report
  • [Presentation] Neutrino Source for Sterile Neutrino Searches2019

    • Author(s)
      T.Konno
    • Organizer
      International Workshop on Neutrinos from Accelerators
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Status of JSNS2 Experiment2019

    • Author(s)
      F.Suekane
    • Organizer
      International Workshop on Neutrinos from Accelerators
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Review and Summary of Short Baseline Neutrino Experiments2019

    • Author(s)
      J.Spitz
    • Organizer
      International Workshop on Neutrinos from Accelerators
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] JSNS2 Experiment2019

    • Author(s)
      C.Rott
    • Organizer
      16th International Conference on Topics in Astroparticle and Underground Physics
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Sterile Neutrino Search at J-PARC MLF2019

    • Author(s)
      T.Maruyama
    • Organizer
      Erice School/Workshop: Star Mergers, Gravitational Waves, Dark Matter and Neutrinos in Nuclear, Particle and Astro-Physics, and in Cosmology
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Review of Accelerator-Based Sterile Neutrino Searches2019

    • Author(s)
      T.Maruyama
    • Organizer
      3rd J-PARC symposium
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Neutrino Physics Opportunities at the J-PARC MLF2019

    • Author(s)
      J.Jordan
    • Organizer
      the Magnificent CEvNS workshop
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] J-PARC MLFにおけるステライルニュートリノ探索実験(JSNS2; J-PARC E56)-12019

    • Author(s)
      古田久敬
    • Organizer
      日本物理学会 秋季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] J-PARC MLFにおけるステライルニュートリノ探索実験(JSNS2; J-PARC E56) 22019

    • Author(s)
      日野陽太
    • Organizer
      日本物理学会 秋季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] JSNS2 is coming2019

    • Author(s)
      Jungsic Park
    • Organizer
      日本物理学会 秋季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] JSNS2 experiment2018

    • Author(s)
      J.S.Park
    • Organizer
      14th Rencontres Du Vietnam INTERNATIONAL SYMPOSIUM ON NEUTRINO FRONTIERS
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Review of the sterile neutrino searches2018

    • Author(s)
      T.Maruyama
    • Organizer
      DBD2018 workshop in Hawaii
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Light Sterile Neutrinos: Is there any good pictures?2018

    • Author(s)
      丸山和純
    • Organizer
      KEK理論セミナー
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] J-PARC MLFにおけるステライルニュートリノ探索実験(JSNS2; J-PARC E56) 12018

    • Author(s)
      古田久敬
    • Organizer
      日本物理学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] J-PARC MLFにおけるステライルニュートリノ探索実験(JSNS2; J-PARC E56) 22018

    • Author(s)
      日野陽太
    • Organizer
      日本物理学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] J-PARC MLFにおけるステライルニュートリノ探索実験(JSNS2; J-PARC E56) 32018

    • Author(s)
      桑田和輝
    • Organizer
      日本物理学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Sterile neutrino search experiment at J-PARC MLF (JSNS2, J-PARC E56)-42018

    • Author(s)
      Jungsic Park
    • Organizer
      日本物理学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Searching for a Sterile Neutrino at J-PARC MLF: JSNS22017

    • Author(s)
      J.S.Park
    • Organizer
      EPS-HEP
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Sterile Neutrino experiments at Acdelerator2017

    • Author(s)
      T.Kawasaki
    • Organizer
      Recontres du Vietnum Neutrino workshop
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Sterile Neutrino Searches at J-PARC MLF2017

    • Author(s)
      T.Maruyama
    • Organizer
      Erice School/Workshop: Neutrinos in Cosmology, in Astro, in Particle and in Nuclear Physics
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] JSNS2 overview2017

    • Author(s)
      T.Maruyama
    • Organizer
      Korean Physics Society
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] JSNS2 detector construction2017

    • Author(s)
      J.S.Park
    • Organizer
      Korean Physics Society
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] J-PARC MLFにおけるステライルニュートリノ探索実験(JSNS2; J-PARC E56) 12017

    • Author(s)
      丸山和純
    • Organizer
      日本物理学会(年次大会;大阪大学)
    • Related Report
      2017 Annual Research Report
  • [Presentation] J-PARC MLFにおけるステライルニュートリノ探索実験(JSNS2; J-PARC E56) 22017

    • Author(s)
      日野陽太
    • Organizer
      日本物理学会(年次大会;大阪大学)
    • Related Report
      2017 Annual Research Report
  • [Presentation] J-PARC MLFにおけるステライルニュートリノ探索実験(JSNS2; J-PARC E56) 32017

    • Author(s)
      岩井瑛人
    • Organizer
      日本物理学会(年次大会;大阪大学)
    • Related Report
      2017 Annual Research Report
  • [Presentation] ステライルニュートリノ探索実験(JSNS2)2017

    • Author(s)
      丸山和純
    • Organizer
      核物理の将来勉強会
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] Neutrinos which is sensitive to only gravity2017

    • Author(s)
      T.Maruyama
    • Organizer
      KMIコロキウム(名古屋大学)
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] J-PARC MLFにおけるステライルニュートリノ探索実験(JSNS2; J-PARC E56) 12017

    • Author(s)
      丸山和純
    • Organizer
      日本物理学会(秋季大会:宇都宮大学)
    • Related Report
      2017 Annual Research Report
  • [Presentation] J-PARC MLFにおけるステライルニュートリノ探索実験(JSNS2; J-PARC E56) 22017

    • Author(s)
      日野陽太
    • Organizer
      日本物理学会(秋季大会:宇都宮大学)
    • Related Report
      2017 Annual Research Report
  • [Presentation] Sterile neutrino search experiment at J-PARC MLF (JSNS2, J-PARC E56) - 32017

    • Author(s)
      J.S.Park
    • Organizer
      日本物理学会(秋季大会:宇都宮大学)
    • Related Report
      2017 Annual Research Report
  • [Presentation] Searching for a Sterile Neutrino at J-PARC MLF: JSNS2 experiment2016

    • Author(s)
      丸山和純
    • Organizer
      ICHEP 2016
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Review of short-baseline programs in the world2016

    • Author(s)
      末包文彦
    • Organizer
      HINT2016 workshop
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Neutrino-Nucleus Interaction studied with MeV Neutrino Beam at J-PARC2016

    • Author(s)
      嶋達志
    • Organizer
      Nuclei in the Cosmos XIV
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] J-PARC MLFにおけるステライルニュートリノ探索実験(JSNS2; J-PARC E56)の展望2016

    • Author(s)
      丸山和純
    • Organizer
      日本物理学会秋季大会
    • Related Report
      2016 Annual Research Report
  • [Presentation] ステライルニュートリノ探索実験JSNS^2^本検出器設置候補地におけるビーム由来背景事象粒子識別測定2016

    • Author(s)
      日野陽太
    • Organizer
      日本物理学会年会
    • Related Report
      2016 Annual Research Report
  • [Book] J-PARC 物質生命科学研究施設で行うステライルニュートリノ探索実験2019

    • Author(s)
      丸山和純
    • Total Pages
      6
    • Publisher
      Cross
    • Related Report
      2019 Annual Research Report
  • [Remarks] J-PARC MLF中性子源を用いたステライルニュートリノ探索

    • URL

      https://research.kek.jp/group/mlfnu/index.html

    • Related Report
      2019 Annual Research Report
  • [Remarks] JSNS2 experiment

    • URL

      https://research.kek.jp/group/mlfnu/eng/index.html

    • Related Report
      2019 Annual Research Report
  • [Remarks] J-PARC MLF中性子源を用いたステライルニュートリノ探索

    • URL

      http://research.kek.jp/group/mlfnu/index.html

    • Related Report
      2018 Annual Research Report 2017 Annual Research Report 2016 Annual Research Report

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Published: 2016-06-01   Modified: 2023-10-16  

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