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Establishment of event reconstruction technique for fluorescence telescope in future huge cosmic ray observatory

Research Project

Project/Area Number 21K03605
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 InstitutionKanagawa University

Principal Investigator

Ikeda Daisuke  神奈川大学, 工学部, 助教 (60584258)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2022: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords極高エネルギー宇宙線 / 大気蛍光望遠鏡 / 事象再構成 / フレネルレンズ / 光学シミュレーション / 米国ユタ州 / 焦点面検出器 / 再構成手法の開発 / 装置開発 / CRAFFT実験 / 測定精度
Outline of Research at the Start

極高エネルギー宇宙線の起源や加速機構の解明を目指した将来の大規模計画を実現するため、安価で、宇宙線の組成に感度のある測定手法が必要とされている。本研究では簡素化された次世代大気蛍光望遠鏡に着目し、本手法で不鮮明である装置単独での宇宙線事象測定精度を得るため、再構成手法の開発、及び手法に最適な焦点面カメラを持つ望遠鏡を構築する。本手法及び開発した望遠鏡は米国ユタ州で現在稼働中のTelescope Array実験との宇宙線同時観測により検証する。本研究により、次世代大気蛍光望遠鏡の性能を明らかにし、大規模観測実験を実現する観測手法として確立する。

Outline of Final Research Achievements

For future large-scale ultra-high energy cosmic ray observation, we have developed a next-generation fluorescence telescope that is cost-effective and satisfies the required resolution through both of a development of an event reconstruction method that can be used with the telescope alone and an optimization of the focal plane of the telescope.

We developed an event reconstruction method using observed waveforms itself. We also optimized the focal plane of the telescope and developed a new wide-angle telescope with a field of view of 24 × 18 degrees. By applying the developed reconstruction method, the wide-angle telescope has a resolution of 2.3 degrees for the arrival direction, which satisfies a requirement for mass composition measurements. The new telescope was actually constructed at the site of Telescope Array (TA) experiment in the U.S., and its performance is evaluated by simultaneous observations of cosmic rays with the TA experiment.

Academic Significance and Societal Importance of the Research Achievements

本研究で開発した事象再構成手法や、広角化したことで少数台の検出器で広い面積を安価にカバーする次世代大気蛍光望遠鏡、評価された性能は、将来の大規模極高エネルギー宇宙線観測実験を担う観測手法を選択する際に必要不可欠な情報である。
このような大規模実験が実現されれば、これまで明らかにされていない極高エネルギー宇宙線の起源や加速機構、地球までの伝播過程、宇宙空間の磁場に対する新たな知見を得ることが可能であり、本研究成果はそれを強く推進するものである。

Report

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

    (17 results)

All 2024 2023 2022 2021

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (16 results) (of which Int'l Joint Research: 7 results)

  • [Journal Article] Status and prospects of the CRAFFT project for the next generation UHECR observation2022

    • Author(s)
      Daisuke Ikeda
    • Journal Title

      Journal of Physics: Conference Series

      Volume: 2156 Issue: 1 Pages: 1-4

    • DOI

      10.1088/1742-6596/2156/1/012084

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] CRAFFT実験14:新型広角望遠鏡による観測と今後の計画2024

    • Author(s)
      池田大輔
    • Organizer
      日本物理学会2024年春季大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Detector optimization and observation plan of the CRAFFT project for the next generation UHECR observation2023

    • Author(s)
      Yuichiro Tameda
    • Organizer
      38th International Cosmic Ray Conference
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] CRAFF実験13:今後の観測計画2023

    • Author(s)
      多米田裕一郎
    • Organizer
      日本物理学会第78回年次大会
    • Related Report
      2022 Research-status Report
  • [Presentation] 超高エネルギー宇宙線の質量組成異方性探索に必要な統計量の見積もり2023

    • Author(s)
      齊藤亮介
    • Organizer
      日本物理学会第78回年次大会
    • Related Report
      2022 Research-status Report
  • [Presentation] 次世代の超高エネルギー宇宙線観測へ向けたXmax異方性探索の検討2022

    • Author(s)
      齊藤亮介
    • Organizer
      日本物理学会2022年秋季大会
    • Related Report
      2022 Research-status Report
  • [Presentation] Progress and future prospect of the CRAFFT project for the next generation UHECR observatory2022

    • Author(s)
      Y. Tameda
    • Organizer
      6th International Symposium on Ultra High Energy Cosmic Rays
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Examination of Xmax anisotropy for the next generation Ultra-high energy cosmic rays observation2022

    • Author(s)
      R. Saito
    • Organizer
      6th International Symposium on Ultra High Energy Cosmic Rays
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] CRAFFT望遠鏡のための波形フィットによる宇宙線空気シャワー再構成手法の開発2022

    • Author(s)
      西尾瑛司
    • Organizer
      第7回 宇宙素粒子若手の会 秋の研究会
    • Related Report
      2022 Research-status Report
  • [Presentation] 次世代宇宙線検出器CRAFFT望遠鏡の検出器較正2022

    • Author(s)
      村上実哉斗
    • Organizer
      第7回 宇宙素粒子若手の会 秋の研究会
    • Related Report
      2022 Research-status Report
  • [Presentation] Progress and future prospect of the CRAFFT project for the next generation UHECR observation2021

    • Author(s)
      Y. Tameda
    • Organizer
      37th International Cosmic Ray Conference
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Progress in optimizing the detection surface structure of CRAFFT2021

    • Author(s)
      Y. Kubota
    • Organizer
      37th International Cosmic Ray Conference
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Development of autonomous observation system for next-generation cosmic ray telescope2021

    • Author(s)
      T. Tomida
    • Organizer
      37th International Cosmic Ray Conference
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Status and prospects of the CRAFFT project for the next generation UHECR observation2021

    • Author(s)
      D. Ikeda
    • Organizer
      17th International Conference on Topics in Astroparticle and Underground Physics
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 次世代型極高エネルギー宇宙線観測用望遠鏡 CRAFFTに用いる光電子増倍管の感度較正2021

    • Author(s)
      柴田規迪
    • Organizer
      第39回レーザセンシングシンポジウム
    • Related Report
      2021 Research-status Report
  • [Presentation] CRAFFT実験11:波形フィットによる宇宙線空気シャワー再構成手法の開発2021

    • Author(s)
      西尾瑛司
    • Organizer
      日本物理学会2021年秋季大会
    • Related Report
      2021 Research-status Report
  • [Presentation] CRAFFT実験12:観測計画と準備状況2021

    • Author(s)
      多米田裕一郎
    • Organizer
      日本物理学会第77回年次大会
    • Related Report
      2021 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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