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Detector development for uncovering mysteries in neutron spectra through next-generation electron-hadron collisions

Research Project

Project/Area Number 19K03886
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 15020:Experimental studies related to particle-, nuclear-, cosmic ray and astro-physics
Research InstitutionKobe University

Principal Investigator

Yamazaki Yuji  神戸大学, 理学研究科, 教授 (00311126)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2019: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords電子・陽子散乱 / 電子・原子核散乱 / 光検出器 / 中性子生成 / カロリメーター / 放射線耐性 / ゼロ度 / 電子・重イオン散乱 / 前方散乱 / 電子・ハドロン散乱 / 前方中性子 / 宇宙線の組成
Outline of Research at the Start

高エネルギーハドロン散乱で生成される超前方中性子は,これまでの測定間でばらつきがある。その定量的理解は,空気シャワー形状測定による宇宙線組成決定に影響を与えるなど,素粒子物理を超えた重要な課題である。この研究では,加速器による電子・陽子散乱を用いて中性子生成メカニズムを理解するための検出器を開発する。検出器を放射線量の高いビーム軸付近に設置するため,放射線耐性の高いエネルギー測定器(カロリメーター)を開発する。また加速器チームと共同で,その設置場所の解を見つける。

Outline of Final Research Achievements

This research was aiming for developing basic technologies to measure forward neutrons from high-energy electron-proton scattering in two future accelerators, EIC in US and LHeC in Europe. The study is motivated by disagreements among the neutron spectrum measurements in the past. The achievement for the LHeC is a) the confirmation of the location for the ZDC, the zero-degree calorimeter in the very forward direction of the scattering with accelerator designers; b) the conceptual design of the entire LHeC detector and c) sensitivity study to physics of the the two-photon scattering at the LHeC, which is tightly related to the forward scattering. As for the EIC, the expected dose from mid-spped neutron in the ZDC was estimated by simulation and was found that it reaches to 10^14. The detailed design was made to make the ZDC detector at EIC to stand for that. The key component there is compact photo sensors for ZDC. The radiation tolerance of the silicon photomultiplier was studied.

Academic Significance and Societal Importance of the Research Achievements

高エネルギー粒子散乱による中性子の生成量は,それ自体の生成メカニズムの解明といった素粒子・原子核分野の興味のみならず,宇宙から到来する超高エネルギー宇宙線が大気と散乱するときの空気シャワーの理解にも必要である。空気シャワーの粒子数,エネルギー分布が過去の加速器実験をもとにしたシミュレーションと合っておらず,宇宙線の組成の異常か,中性子生成の不定性か決着がついていない。このように中性子生成量は宇宙の成り立ちの解明とも関連する。また,高放射線耐性検出器は,放射線量の高い分野,たとえば放射光による物質測定,加速器の医学応用,原子炉近くでの測定などへの応用が期待できる。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (25 results)

All 2023 2022 2021 2020 2019 Other

All Int'l Joint Research (15 results) Journal Article (3 results) (of which Int'l Joint Research: 3 results,  Open Access: 3 results,  Peer Reviewed: 2 results) Presentation (7 results) (of which Int'l Joint Research: 6 results,  Invited: 1 results)

  • [Int'l Joint Research] CERN(スイス)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] The University of Liverpool(英国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] DESY(ドイツ)

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

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Kansas University/Brookhaven National Laboratory/Jefferson Laboratory(米国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research]

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] カンザス大学/Brookhaven研究所/Old Dominion大学(米国)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] リバプール大学(英国)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] DESY研究所(ドイツ)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] INFNボローニャ研究所(イタリア)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] AGH科学技術大学(ポーランド)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] カンザス大学/Old Dominion University(米国)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] CERN研究所(スイス)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] ニューヨーク州立大学/Brookhaven国立研究所/Jefferson国立加速器施設(米国)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] リバプール大学/バーミンガム大学(英国)

    • Related Report
      2019 Research-status Report
  • [Journal Article] New electroweak challenges and opportunities at the LHeC2022

    • Author(s)
      Krzysztof Piotrzkowski(Louvain U., CP3), Yuji Yamazaki
    • Journal Title

      Proceedings of Science EPS-HEP2021

      Volume: - Pages: 486-486

    • DOI

      10.22323/1.398.0486

    • Related Report
      2021 Research-status Report
    • Open Access / Int'l Joint Research
  • [Journal Article] An experiment for electron-hadron scattering at the LHC2022

    • Author(s)
      K.D. J. Andre, Y. Yamazaki 他24名
    • Journal Title

      European Physical Journal

      Volume: C 82 Issue: 1

    • DOI

      10.1140/epjc/s10052-021-09967-z

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The Large Hadron-Electron Collider at the HL-LHC2021

    • Author(s)
      P. Agostini, Y. Yamazaki 他 335名
    • Journal Title

      Journal of Physics G: Nuclear and Particle Physics

      Volume: 48 Issue: 11 Pages: 110501-110501

    • DOI

      10.1088/1361-6471/abf3ba

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] ZDC Overview2023

    • Author(s)
      Yuji Yamazaki
    • Organizer
      EIC Asia Workshop at RIKEN Wako campus
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The LHEC and FCC-eh Detector Design2022

    • Author(s)
      Yuji Yamazaki
    • Organizer
      The LHeC FCCeh and PERLE Workshop at Orsay
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] EIC計画へ向けた超前方カロリメータのデザイン開発2022

    • Author(s)
      清水志真
    • Organizer
      日本物理学会第77回(2022年)年次大会
    • Related Report
      2021 Research-status Report
  • [Presentation] New electroweak challenges and opportunities at the LHeC2021

    • Author(s)
      Krzysztof Piotrzkowski(Louvain U., CP3)
    • Organizer
      European Physical Society conference on high energy physics 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] An Experiment for Electron-Hadron Scattering at the LHC2021

    • Author(s)
      Yuji Yamazaki
    • Organizer
      Offshell-2021 The virtual HEP conference on Run4@LHC
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] The Updated LHeC Detector2020

    • Author(s)
      山崎祐司
    • Organizer
      40th International Conference on High Energy Physics ICHEP2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Forward Detectors2019

    • Author(s)
      山崎祐司
    • Organizer
      ELECTRONS FOR THE LHC: Workshop on the LHeC, FCC-eh and PERLE
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited

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Published: 2019-04-18   Modified: 2024-01-30  

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