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In-flight calibration of high energy electron detector on board the ERG

Research Project

Project/Area Number 18K03733
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 17010:Space and planetary sciences-related
Research InstitutionJapan Aerospace EXploration Agency

Principal Investigator

Mitani Takefumi  国立研究開発法人宇宙航空研究開発機構, 宇宙科学研究所, 助教 (70455468)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Keywords高エネルギー電子 / ERG / あらせ / シリコン半導体
Outline of Final Research Achievements

In this study, we studied calibration method of the HEP instruments onboard the ERG satellite. We have developed a detector simulator using the Geant4 toolkit, in order to deduce the distribution of incident electrons from the direction and energy detections in orbit. Using the simulator, we calculate response matrices of the detectors and derive incident fluxes from the detected counts. The derived fluxes of electrons at around 90 keV are consistent with those observed by the medium-energy particle experiments - electron analyzer (MEP-e), which utilizes an electrostatic analyzer. Thus, we have illustrate the validity of our method using in-flight data. The calibrate data is open to the public.

Academic Significance and Societal Importance of the Research Achievements

地球周辺の宇宙空間「ジオスペース」において高エネルギー電子が生成・消滅する過程を明らかにするためには、軌道上で計測された電子フラックスデータを校正し、その妥当性を示すことが肝要である。本研究にて開発した校正方法で得られたデータを、異なる検出原理をもつ計測器で得られたデータと比較することにより本手法の妥当性を示したとともに、他衛星ともほぼ整合する結果を得ている。これにより海外の衛星データと合わせて、放射線帯の複数の地点において電子のエネルギーに応じたフラックス変動を議論することが可能となった。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (6 results)

All 2020 2019 2018

All Presentation (6 results) (of which Int'l Joint Research: 2 results)

  • [Presentation] Improvement of detector response matrices of the high-energy electron experiments (HEP) onboard the Arase satellite2020

    • Author(s)
      Takefumi Mitani, PARK INCHUN, Tomoaki Hori, Takeshi Takashima, Satoshi Kasahara, Satoshi Kurita, Mariko Teramoto, Nana Higashio, Yoshizumi Miyoshi, Iku Shinohara
    • Organizer
      日本地球惑星科学連合2020年大会
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Calibration status of the high-energy electron experiment (HEP) onboard the Arase satellite2019

    • Author(s)
      Takefumi Mitani, Inchun Park, Tomoaki Hori, Takeshi Takashima, Satoshi Kasahara, Satoshi Kurita, Mariko Teramoto, Nana Higashio, Yoshizumi Miyoshi, and Iku Shinohara
    • Organizer
      AGU Fall Meeting 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Validation of High-energy electron detector simulator for the HEP instruments onboard Arase2019

    • Author(s)
      三谷 烈史, PARK INCHUN, 堀 智昭, 滑川 拓, 浅村 和史, 高島 健, 笠原 慧, 栗田 怜, 寺本 万里子, 東尾 奈々, 三好 由純, 篠原 育
    • Organizer
      日本地球惑星科学連合2019年大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Validation of High-energy electron detector simulator for the HEP instruments onboard Arase2019

    • Author(s)
      三谷 烈史, Park Inchun, 堀 智昭, 滑川 拓, 浅村 和史, 高島 健, 笠原 慧, 栗田 怜, 寺本 万里子, 東尾 奈々, 三好 由純, 篠原 育
    • Organizer
      第146回地球電磁気・地球惑星圏学会(SGEPSS) 総会および講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] Validation of High-energy electron detector simulator for the HEP instruments onboard Arase2019

    • Author(s)
      三谷 烈史, PARK INCHUN, 堀 智昭, 滑川拓, 浅村和史, 高島 健, 笠原 慧, 栗田 怜, 寺本 万里子, 東尾 奈々, 三好 由純, 篠原 育
    • Organizer
      日本地球惑星科学連合2019年大会
    • Related Report
      2018 Research-status Report
  • [Presentation] High-energy electron observations with the HEP instruments onboard Arase and its calibration status2018

    • Author(s)
      三谷 烈史, 高島 健, 堀 智昭, PARK INCHUN, 三好 由純, 笠原 慧, 栗田 怜, 寺本 万里子, 東尾 奈々, 篠原 育
    • Organizer
      第144回地球電磁気・地球惑星圏学会(SGEPSS) 総会および講演会
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2022-01-27  

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