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Innovation in time-domain astronomy by X-ray optics with high-precision microfabrication

Research Project

Project/Area Number 20K20525
Research Category

Grant-in-Aid for Challenging Research (Pioneering)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 15:Particle-, nuclear-, astro-physics, and related fields
Research InstitutionKanazawa University

Principal Investigator

Yonetoku Daisuke  金沢大学, 数物科学系, 教授 (40345608)

Project Period (FY) 2020-07-30 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥25,480,000 (Direct Cost: ¥19,600,000、Indirect Cost: ¥5,880,000)
Fiscal Year 2022: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
Fiscal Year 2021: ¥9,100,000 (Direct Cost: ¥7,000,000、Indirect Cost: ¥2,100,000)
Fiscal Year 2020: ¥9,750,000 (Direct Cost: ¥7,500,000、Indirect Cost: ¥2,250,000)
KeywordsX線光学系 / 微細加工 / ガンマ線バースト / X線天文学 / 人工衛星 / 検出器開発
Outline of Research at the Start

本研究は、高エネルギー突発天体現象の観測感度を約2桁も改善し、時間領域天文学に革命を起こすことを目指すものである。近年の様々な観測技術の発展により、重力波源からの微弱なX線放射や、極めて遠方のガンマ線バーストなどの新たな観測対象が現れてきた。これらの最先端の観測を実現するためには、広視野X線観測の感度を約2桁程度も向上させなくてはならない。本研究では、企業と共同で高精度な3次元微細加工・研磨技術を応用した「X線結像光学素子(ロブスターアイ光学系)」を製造し、X線ビームラインでの評価を繰り返すことで、その製造技術・量産体制を確立することを目標とする。

Outline of Final Research Achievements

Aiming to avoid deterioration of imaging performance due to elementary deformation, which has been a manufacturing problem of conventional lobster-eye optics (LEO), we constructed an LEO on a glass flat plate by 3D laser micro-machining and magnetohydrodynamic polishing. We were able to obtain X-ray imaging performance of about 10 arcmin squared, which is equivalent to that of conventional LEOs. However, to achieve higher precision, the surface roughness by laser processing needs to be reduced by one order of magnitude or more. The technology to array multiple LEOs to achieve a wide field of view has made great progress. Using collimator light, the effective focal length of LEOs was measured, and making a mechanical adjustment of several 10 microns, we successfully constructed wide-field imaging optics which can be achieved with performance comparable to one of single LEO.

Academic Significance and Societal Importance of the Research Achievements

宇宙物理学・天文学では、「広い視野を持った観測装置による広域探査・モニター」と「狭い視野で高感度な大型望遠鏡による詳細観測」が協調することで宇宙の観測可能領域を拡大し、真理を追求している。とりわけ、高エネルギー宇宙物理学における広視野観測では、全天の1/10以上にもおよぶ広域をモニターすることで突発天体の発見に貢献してきた。 本研究により、最先端の観測を実現するために必要な約1.5桁の観測感度の改善が見込める基盤技術が得られ、同時にさらなる課題を確認した。この技術は、トンネル・橋・建造物などの非破壊検査を圧倒的に高効率化することにも寄与でき、産業界においてもインパクトのある開発である。

Report

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

    (22 results)

All 2023 2022 2021 2020

All Journal Article (6 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (16 results) (of which Int'l Joint Research: 5 results,  Invited: 7 results)

  • [Journal Article] High-redshift gamma-ray burst for unraveling the dark ages Mission: HiZ-GUNDAM2022

    • Author(s)
      Daisuke Yonetoku, et al.
    • Journal Title

      Proceedings of the SPIE

      Volume: 12181

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Development of a method for aligning lobster eye optics onboard HiZ-GUNDAM with visible light and shape measurements2022

    • Author(s)
      Hatsune Goto, Daisuke Yonetoku, et al.
    • Journal Title

      Proceedings of the SPIE

      Volume: 12181 Pages: 248-248

    • DOI

      10.1117/12.2627445

    • Related Report
      2022 Annual Research Report
  • [Journal Article] High-z gamma-ray bursts unraveling the dark ages and extreme space-time mission: HiZ-GUNDAM2020

    • Author(s)
      Yonetoku Daisuke、Mihara Tatehiro、Doi Akihiro、Sakamoto Takanori、Tsumura Kohji、Ioka Kunihito、et al.
    • Journal Title

      Proceedings of the SPIE, Volume 11444, id. 114442Z 13 pp. (2020).

      Volume: 11444 Pages: 1-13

    • DOI

      10.1117/12.2560603

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] X-ray performance and simulation study of lobster eye optics2020

    • Author(s)
      Jin Li、Sakamoto Takanori、Serino Motoko、Yonetoku Daisuke、Sawano Tatsuya、Mitsuish Ikuyuki、Mihara Tatehiro
    • Journal Title

      Proceedings of the SPIE, Volume 11444, id. 114447C 12 pp. (2020).

      Volume: 11444 Pages: 1-12

    • DOI

      10.1117/12.2560121

    • Related Report
      2020 Research-status Report
  • [Journal Article] Development of a fast readout system of a CMOS image sensor for the time-domain astronomy2020

    • Author(s)
      Ogino Naoki、Arimoto Makoto、Sawano Tatsuya、Yonetoku Daisuke、Goto Hatsune、Hyeongsoon Wang、Hiraga Junko、Sakamoto Takanori、Sei Kensyo、Yatsu Yoichi
    • Journal Title

      Proceedings of the SPIE, Volume 11444, id. 114445L 7 pp. (2020).

      Volume: 11444 Pages: 1-7

    • DOI

      10.1117/12.2560605

    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Journal Article] A detection algorithm for faint sources based on 1-d projection for a lobster-eye x-ray imaging system2020

    • Author(s)
      Sawano Tatsuya、Yonetoku Daisuke、Arimoto Makoto、Li Jin、Mihara Tatehiro、Ogino Naoki、Sakamoto Takanori、Serino Motoko
    • Journal Title

      Proceedings of the SPIE, Volume 11444, id. 114445K 7 pp. (2020).

      Volume: 11444 Pages: 1-7

    • DOI

      10.1117/12.2560604

    • Related Report
      2020 Research-status Report
  • [Presentation] High-redshift gamma-ray burst for unraveling the dark ages Mission: HiZ-GUNDAM2023

    • Author(s)
      Daisuke Yonetoku
    • Organizer
      American Astronomical Society High Energy Astronomy Division
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ガンマ線バーストを用いた初期宇宙・極限時空探査計画 HiZ-GUNDAMの進捗2023

    • Author(s)
      米徳大輔
    • Organizer
      宇宙科学シンポジウム
    • Related Report
      2022 Annual Research Report
  • [Presentation] ガンマ線バーストを用いた初期宇宙・極限時空探査計画 HiZ-GUNDAM2023

    • Author(s)
      米徳大輔
    • Organizer
      高エネルギー宇宙物理学連絡会「高エネルギー宇宙物理ミッションの現状から近未来を考える」
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] ガンマ線バーストを用いた初期宇宙・極限時空探査計画 HiZ-GUNDAM の進捗2022

    • Author(s)
      米徳大輔
    • Organizer
      宇宙科学シンポジウム
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] ガンマ線バーストを用いた初期宇宙・極限時空探査計画 HiZ-GUNDAM2022

    • Author(s)
      米徳大輔
    • Organizer
      光赤外線天文学連絡会シンポジウム
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 公募型小型計画の課題 - 高宇連へのメッセージ -2022

    • Author(s)
      米徳大輔
    • Organizer
      高エネルギー宇宙物理連絡会研究会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] HiZ-GUNDAMとGREX-PLUSのシナジー2022

    • Author(s)
      米徳大輔
    • Organizer
      GREX-PLUSサイエンス会議
    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Invited
  • [Presentation] High-redshift gamma-ray burst for unraveling the dark ages Mission: HiZ-GUNDAM2022

    • Author(s)
      Daisuke Yonetoku
    • Organizer
      SPIE Space Telescope and Instrumentation 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Development of a method for aligning lobster eye optics onboard HiZ-GUNDAM with visible light and shape measurements2022

    • Author(s)
      Hatsune Goto
    • Organizer
      SPIE Space Telescope and Instrumentation 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 軟X線ビームラインによる Lobster Eye Optics の結像性能評価2022

    • Author(s)
      後藤初音
    • Organizer
      日本物理学会 第77回年次大会(2022年)
    • Related Report
      2021 Research-status Report
  • [Presentation] ガンマ線バーストを用いた初期宇宙・極限時空探査計画 HiZ-GUNDAM2022

    • Author(s)
      米徳大輔
    • Organizer
      光赤外線天文学連絡会将来計画シンポジウム
    • Related Report
      2021 Research-status Report
  • [Presentation] X 線ビームラインによる Lobster Eye Optics の性能評価2021

    • Author(s)
      後藤初音
    • Organizer
      日本天文学会2021年 秋季年会
    • Related Report
      2021 Research-status Report
  • [Presentation] ガンマ線バーストを用いた初期宇宙・極限時空探査計画 HiZ-GUNDAM2021

    • Author(s)
      米徳大輔
    • Organizer
      高エネルギー宇宙物理連絡会研究会
    • Related Report
      2021 Research-status Report
  • [Presentation] High-z Gamma-ray Burst Unraveling the Dark Age and Extreme Space Time Mission: HiZ-GUNDAM2021

    • Author(s)
      Daisuke Yonetoku
    • Organizer
      THESEUS Conference 2021
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] High-z Gamma-ray Burst Unraveling the Dark Age and Extreme Space Time Mission: HiZ-GUNDAM の進捗2021

    • Author(s)
      米徳大輔
    • Organizer
      宇宙科学シンポジウム
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] High-z Gamma-ray Burst Unraveling the Dark Age and Extreme Space Time Mission: HiZ-GUNDAM2020

    • Author(s)
      Daisuke Yonetoku
    • Organizer
      SPIE Conference
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research

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Published: 2020-08-03   Modified: 2024-01-30  

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