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2020 Fiscal Year Annual Research Report

Comprehensive Understanding of Galactic and Extragalactic Cosmic-ray Acceleration by Exploring Gamma-ray Observations beyond 100 TeV

Research Project

Project/Area Number 20H01916
Research InstitutionNagoya University

Principal Investigator

奥村 曉  名古屋大学, 宇宙地球環境研究所, 講師 (90645011)

Project Period (FY) 2020-04-01 – 2023-03-31
Keywordsガンマ線 / 宇宙線 / 半導体光検出器
Outline of Annual Research Achievements

本研究では 100 テラ電子ボルト(TeV)領域の超高エネルギーガンマ線を地上ガンマ線望遠鏡から観測する次世代計画、チェレンコフ望遠鏡アレイの焦点面光検出器の開発を行う。このうち焦点面光検出器として用いる半導体光検出器、光検出器の出力を波形記録する専用の集積回路、およびそれらを制御、データ取得するためのソフトウェア開発、また望遠鏡全体の高校物理シミュレーションが国際共同研究における本研究の役割分担である。2021 年度は、半導体光検出器の光検出能力の測定、またその波長・入射角度依存性のシミュレーションによる理解、半導体表面の多層膜フィルターの構造解析、半導体内部での発熱による駆動電圧の変化や利得の安定性の評価などを進めた。また望遠鏡と焦点面カメラの細部構造を取り込んだ光線追跡シミュレーションによる望遠鏡の幾何学的有効面積の評価を行い、焦点面カメラの筐体設計などを進めた。加えて、低エネルギー領域のガンマ線観測でのガンマ線検出感度の向上を目指し、異なるデザインのガンマ線望遠鏡の焦点面検出機を光電子増倍管から半導体光検出器へ置き換える試験開発を進めた。以上の結果を、2 つの修士論文として院生がまとめあげ、またこれまでの研究成果を含め、2 篇の国際共著論文や、複数の国際学会での発表を行った。2020 年度に引き続き 2021 年度は海外渡航が制限されていたため、国際共同研究相手のところに滞在して研究を進めることはできなかった。

Current Status of Research Progress
Current Status of Research Progress

3: Progress in research has been slightly delayed.

Reason

COVID-19 や、世界的な半導体不足により、装置開発全体が遅延している。また長期海外渡航による国際共同研究の推進を予定していたものの、海外渡航ができなかった。

Strategy for Future Research Activity

2022 年度には半導体不足も一部解消され、また海外渡航も元通りになると期待されるため、半導体光検出器の性能評価や焦点面カメラの性能試験、ソフトウェア開発、望遠鏡シミュレーションなどを海外と共同で進める予定である。

  • Research Products

    (25 results)

All 2022 2021

All Journal Article (20 results) (of which Int'l Joint Research: 19 results,  Peer Reviewed: 2 results,  Open Access: 19 results) Presentation (5 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Development of an advanced SiPM camera for the Large Size Telescope of the Cherenkov TelescopeArray Observatory2022

    • Author(s)
      H. Abe et al.
    • Journal Title

      Proceedings of the 37th International Cosmic Ray Conference

      Volume: NA Pages: NA

    • Open Access / Int'l Joint Research
  • [Journal Article] Status and results of the prototype LST of CTA2022

    • Author(s)
      H. Abe et al.
    • Journal Title

      Proceedings of the 37th International Cosmic Ray Conference

      Volume: NA Pages: NA

    • Open Access / Int'l Joint Research
  • [Journal Article] First follow-up of transient events with the CTA Large Size Telescope prototype2022

    • Author(s)
      H. Abe et al.
    • Journal Title

      Proceedings of the 37th International Cosmic Ray Conference

      Volume: NA Pages: NA

    • Open Access / Int'l Joint Research
  • [Journal Article] Detection of the Crab Nebula by the prototype Schwarzschild-Couder Telescope2022

    • Author(s)
      B. Mode et al.
    • Journal Title

      Proceedings of the 37th International Cosmic Ray Conference

      Volume: NA Pages: NA

    • Open Access / Int'l Joint Research
  • [Journal Article] Physics Performance of the Large Size Telescope prototype of the Cherenkov Telescope Array2022

    • Author(s)
      H. Abe et al.
    • Journal Title

      Proceedings of the 37th International Cosmic Ray Conference

      Volume: NA Pages: NA

    • Open Access / Int'l Joint Research
  • [Journal Article] Deep-learning-driven event reconstruction applied to simulated data from a single Large-Sized Telescope of CTA2022

    • Author(s)
      R. Lopez-Coto et al.
    • Journal Title

      Proceedings of the 37th International Cosmic Ray Conference

      Volume: NA Pages: NA

    • Open Access / Int'l Joint Research
  • [Journal Article] The Small-Sized Telescopes for the Southern Site of the Cherenkov Telescope Array2022

    • Author(s)
      R. White et al.
    • Journal Title

      Proceedings of the 37th International Cosmic Ray Conference

      Volume: NA Pages: NA

    • Open Access / Int'l Joint Research
  • [Journal Article] Cross-calibration and combined analysis of the CTA-LST prototype and the MAGIC telescopes2022

    • Author(s)
      Y. Ohtani et al.
    • Journal Title

      Proceedings of the 37th International Cosmic Ray Conference

      Volume: NA Pages: NA

    • Open Access / Int'l Joint Research
  • [Journal Article] Camera Calibration of the CTA-LST prototype2022

    • Author(s)
      Y. Kobayashi et al.
    • Journal Title

      Proceedings of the 37th International Cosmic Ray Conference

      Volume: NA Pages: NA

    • Open Access / Int'l Joint Research
  • [Journal Article] Commissioning of the camera of the first Large Size Telescope of the Cherenkov Telescope Array2022

    • Author(s)
      O. Blanch et al.
    • Journal Title

      Proceedings of the 37th International Cosmic Ray Conference

      Volume: NA Pages: NA

    • Open Access / Int'l Joint Research
  • [Journal Article] Prototype Schwarzschild-Couder Telescope for the Cherenkov Telescope Array: Commissioning the Optical System2022

    • Author(s)
      D. Ribeiro et al.
    • Journal Title

      Proceedings of the 37th International Cosmic Ray Conference

      Volume: NA Pages: NA

    • Open Access / Int'l Joint Research
  • [Journal Article] Reconstruction of extensive air shower images of the Large Size Telescope prototype of CTA using a novel likelihood technique2022

    • Author(s)
      C. Alispach et al.
    • Journal Title

      Proceedings of the 37th International Cosmic Ray Conference

      Volume: NA Pages: NA

    • Open Access / Int'l Joint Research
  • [Journal Article] Monitoring the pointing of the Large Size Telescope prototype using star reconstruction in the Cherenkov camera2022

    • Author(s)
      L. Foffano et al.
    • Journal Title

      Proceedings of the 37th International Cosmic Ray Conference

      Volume: NA Pages: NA

    • Open Access / Int'l Joint Research
  • [Journal Article] Analysis of the Cherenkov Telescope Array first Large Size Telescope real data using convolutional neural networks2022

    • Author(s)
      H. Abe et al.
    • Journal Title

      Proceedings of the 37th International Cosmic Ray Conference

      Volume: NA Pages: NA

    • Open Access / Int'l Joint Research
  • [Journal Article] ROBAST 32022

    • Author(s)
      A. Okumura
    • Journal Title

      Proceedings of the 37th International Cosmic Ray Conference

      Volume: NA Pages: NA

    • Open Access
  • [Journal Article] CTA - the World's largest ground-based gamma-ray observatory2022

    • Author(s)
      R. Zanin et al.
    • Journal Title

      Proceedings of the 37th International Cosmic Ray Conference

      Volume: NA Pages: NA

    • Open Access / Int'l Joint Research
  • [Journal Article] Design and performance of the prototype Schwarzschild-Couder telescope camera2022

    • Author(s)
      Colin B. Adams et al.
    • Journal Title

      Proceedings of the 37th International Cosmic Ray Conference

      Volume: NA Pages: NA

    • Open Access / Int'l Joint Research
  • [Journal Article] Technical and scientific performance of the prototype Schwarzschild-Couder telescope for CTA2022

    • Author(s)
      Colin B. Adams et al.
    • Journal Title

      Proceedings of the 37th International Cosmic Ray Conference

      Volume: NA Pages: NA

    • Open Access / Int'l Joint Research
  • [Journal Article] Design and performance of the prototype Schwarzschild-Couder telescope camera2022

    • Author(s)
      Adams Colin B. et al.
    • Journal Title

      Journal of Astronomical Telescopes, Instruments, and Systems

      Volume: 8 Pages: NA

    • DOI

      10.1117/1.JATIS.8.1.014007

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Technical and scientific performance of the prototype Schwarzschild-Couder telescope for CTA2021

    • Author(s)
      Adams Colin B.、Ambrosi Giovanni、Ambrosio Michelangelo、Aramo Carla、Batista Pedro I.、Benbow Wystan、et al.
    • Journal Title

      Society of Photo-Optical Instrumentation Engineers (SPIE Conference Series)

      Volume: 11820 Pages: 118200E

    • DOI

      10.1117/12.2594580

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] CTA 報告 197: CTA大・中口径望遠鏡のカメラのSiPM化に向けた、集光器を用いた夜光低減手法の検討(2)2022

    • Author(s)
      芳賀純也、田島宏康、奥村曉、古田和浩
    • Organizer
      日本物理学会第77回年次大会
  • [Presentation] CTA 報告 198: 月光観測の背景光環境における小口径望遠鏡用SiPMの性能評価2022

    • Author(s)
      若園香緒里、田島宏康、奥村曉、古田和浩
    • Organizer
      日本物理学会第77回年次大会
  • [Presentation] ROBAST 32021

    • Author(s)
      Akira Okumura
    • Organizer
      37th International Cosmic Ray Conference
    • Int'l Joint Research
  • [Presentation] Detailed Studies of SiPM Delayed Optical Crosstalk2021

    • Author(s)
      田島宏康、奥村曉、古田和浩
    • Organizer
      KEK Photosensor/Scintillator Workshop
  • [Presentation] 光線追跡シミュレーションへの多層膜フィルターの導入と SiPM での応用2021

    • Author(s)
      奥村曉
    • Organizer
      KEK Photosensor/Scintillator Workshop

URL: 

Published: 2022-12-28  

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