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Investigation on Cosmic High-Energy Electrons Accelerated in Super Navae

Research Project

Project/Area Number 05402006
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field 素粒子・核・宇宙線
Research InstitutionKANAGAWA UNIVERSITY

Principal Investigator

NISHIMURA Jun  Kanagawa Univ.Industrial Eng.Professor, 工学部, 教授 (40013619)

Co-Investigator(Kenkyū-buntansha) YAMAGAMI Takamasa  ISAS System Eng.Associate Professor, 助教授 (40013718)
YOSHIDA Kenji  Kanagawa Univ.Industrial Eng.Research Associate, 工学部, 助手 (90260984)
TAMURA Tadahisa  Kanagawa Univ.Physics Research Associate, 工学部, 助手 (90271361)
TORII Shoji  Kanagawa Univ.Physics Associate Professor, 工学部, 助教授 (90167536)
KASAHARA Katsuaki  Kanagawa Univ.Information Associate Professor, 工学部, 助教授 (00013425)
立山 暢人  神奈川大学, 工学部, 助教授 (30102239)
桜井 邦朋  神奈川大学, 工学部, 教授
Project Period (FY) 1993 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥29,100,000 (Direct Cost: ¥29,100,000)
Fiscal Year 1996: ¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 1995: ¥4,400,000 (Direct Cost: ¥4,400,000)
Fiscal Year 1994: ¥4,900,000 (Direct Cost: ¥4,900,000)
Fiscal Year 1993: ¥16,400,000 (Direct Cost: ¥16,400,000)
KeywordsELECTRON / COSMIC RAY / SUPER NOVA / ACCELERATION / SCINTILLATING FIBER / BALLOON / IMAGING / HIGH ENERGY / 加速 / 陽電子
Research Abstract

We have successfully developed BETS (Balloon Borne Electron Telescope with Scintillating Fibers) which was flown by balloon for the observation of cosmic electrons with energies from 10GeV to a few 100GeV.A new aspcet of the origin and propagation of high energy electrons is investigated by comparing the the observed energy spectrum with those expected by a diffusion model. BETS has also capability to observe the TeV electrons for a few years in space, and we expect such an observation in near future. Summary of yearly results is presented in the following.
1993 : Prototype of BETS and the flight test
We have carried out simulations to study a detector design which has the best performance for observing the high-energy electrons. The basic performance of scintillating fibers (SciFi) was tested by using accelerator beams. The effective area of detector is 28cm*28cm. Nuclear emulsion was also used for confirming the capability of position resolution, electron detection and charge resolutio … More n. A test balloon-flight was done on September to prove the total performance including the electronics and the telemetry system.
1994 : Improvement of BETS and the second flight
By the test, some improvements were required on the image intensifier, the telemetry system and the trigger logics. A technique for analysis of the CCD image to reconstruct shower profiles was confirmed by using the observed events in the second flight.
1995 : BETS-2 and the third flight
The detector was considerably improved by incorporating two image-processing systems to detect shower profiles independently from x and y side. The BETS-2 which was flown for 7.5 hours at an altitude more than 36km, detected showers with the frequency of 1.6Hz. It is confirmed that the rejection power of the background protons is better than 1/2000. Almost all of showers over 50GeV were identified in emulsions at the positions within an error in which showers were observed with SciFi's. The electrons which identified with SciFi's was remarkably confirmed by analysis of emulsions.
1996 : Accelerator test for the calibration of BETS-2
An accelerator test of BETS-2 was carried out at CERN-SPS to confirm the detection capability of electrons and the energy resolution Energy spectrum of electrons from 10GeV to 100GeV is derived by the observed events with BETS-2 calibrated by the accelerator test. Less

Report

(5 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • 1994 Annual Research Report
  • 1993 Annual Research Report
  • Research Products

    (40 results)

All Other

All Publications (40 results)

  • [Publications] Shoji Torii: "A Balloon Borne Electron Telescope wiht Scintillating Fibers" Proc.of 24th Inetrnational Cosmic Ray Conference. 3. 575-578 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Jun Nishimura: "Astrophysical Significance of the Confinement Time of Primary Electrons in the Galaxy" Proc.of 24th International Cosmic Ray Conference. 3. 29-32 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 鳥居祥二: "BETS-2による高エネルギー電子観測" 超高エネルギー天体研究会収録、東京大学宇宙線研究所. 143-150 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Shoji Torii: "Balloon Borne Electron Telescope wiht Scintillating Fibers" Proc.of Society of Photo-Optical Instrumentation Engineers. 2806. 145-154 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Shoji Torii: "An Imaging-Calorimeter Telescope for Electron Observation Using Scintillating Fibers" Proc.of UCLA International Conf.on Imaging Detectors. 35-43 (2996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Sojio Torii: "A Balloon Borne Electron Telescope wiht Scintillating Fibers" Proc.of 20th International Symposium on Space Technology and Science. (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 鳥居祥二: "シンチレーティング・ファイバーを用いた一次電子観測装置" 宇宙科学研究所報告、特集第33号大気球研究報告. 78-87 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 鳥居祥二: "BETS-2による高エネルギー電子観測" 飛翔体による宇宙線観測研究所(東京大学宇宙線研). 38-47 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Shoji Torii: "A Scitillating-Fiber Gamma-Ray Telescope" Astronomy and Astrophysics Supplement Sereis. 665-668 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Jun Nishimura: "Observation of High Energy Primay Electrons and Ist Astrophysical Signiflcance" Proc.of 31th COSPAR Scientific Assembly. (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Hiroyuki Murakami: "A Balloon-Borne Electron Tlescpe with Scintillating Fibers" Proc.of 31st COSPAR Scientific Assembly. (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 山上隆正: "BETS-2による高エネルギー電子観測" 宇宙科学研究所報告. (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Shoji Torii: "A Balloon Borne Electron Telescope with Scintillating Fibers" Proc.of 24th ICRC. 3. 575-578 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Jun Nishimura: "Astrophysical Significance of the Confinement Time of Primary Electrons in the Galaxy" Proc.of 24th ICRC. 3. 29-32 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Shoji Torii: "Balloon Borne Electron Telescope with Scintillating Fibers" Proc.of SPIE. 2806. 145-154 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Shoji Torii: "Imaging-Calorimeter Telescope for Eelctron Observation Using Scintillating Fibers" Proc.of UCLA Int.Conf.35-43 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Shoji Torii: "A Balloon Borne Electron Telescope with Scintillating Fibers" Proc.of 20th ISTS. (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Shoji Torii: "A Scitillating-Fiber Gamma-Ray Telescope" A & A Suppl.120. 665-668 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Jun Nishimura: "Observation of High Energy Primary Electrons and Its Astrophysical Significance" Proc.of 31st COSPAR. (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Hiroyuki Murakami: "A Balloon-Borne Electron Telescope with Scintillating Fibers" Proc.of 31st COSPAR. (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Shoji Torii: "Balloon Borne Electron Telescope with Scintillating Fibers" Proc.of Society of Photo-Optical Instrumentation Engineers. 2806. 145-154 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Shoji Torii: "A Balloon Borne Electron Telescope with Scintillating Fibers" Proc.of 20th International Symposium on Space Technology and Science. (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Shoji Torii: "A Balloon Borne Electron Telescope with Scintillating Fibers" Proc.of 31st COSPAR Scientific Assembly. (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Shoji Torii: "An Imaging-Calorimeter Telescope for Electron Observation Using Scintillating Fibers" Proc.of UCLA International Conf.on Imaging Detectors. 35-43 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 鳥居祥二: "シンチレーティング・ファイバーを用いた一次電子観測装置" 宇宙科学研究所報告、特集第33号大気球研究報告. 78-87 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 鳥居祥二: "BETS-2による高エネルギー電子観測" 飛翔体による宇宙線観測研究会(東京大学宇宙線研). 38-47 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Shoji Torii: "A Balloon Borne Electron Telescope with Scintillating FIbers" Proc. of 24th Int. Cosmic Ray Conf.3. 84-87 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 鳥居祥二: "シンチファイバーを用いた一次電子観測装置" 科学衛星・宇宙観測シンポジウム(宇宙科学研究所). 226-229 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 鳥居祥二: "シンチレーティング・ファイバーを用いた一次電子観測装置" 宇宙科学研究所報告(大気球研究報告). (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] Shoji Torii: "An Imaging-Calorimeter Telescope for Electron Observation Using Scintillating Fibers" Proc. of UCLA International Conf. On Imaging Detectors. (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 田村忠久: "BET-2の観測結果-シャワー画像解析-" 大気球シンポジウム(宇宙科学研究所). (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] 吉田賢二: "BET-2の観測結果-粒子飛跡解析-" 大気球シンポジウム(宇宙科学研究所). (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] 鳥居祥二: "シンチファイバーによる一次電子観測I" 大気球シンポジウム(宇宙科学研究所). 115-118 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 村上浩之: "シンチファイバーを用いた一次電子観測用データ処理システム" 大気球シンポジウム(宇宙科学研究所). 111-114 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 田村忠久: "シンチレーティング・ファイバーによる一次電子観測II(観測報告)" 大気球シンポジウム(宇宙科学研究所). (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] 吉田賢二: "シンチレーティング・ファイバーによる一次電子観測II(モニター)" 大気球シンポジウム(宇宙科学研究所). (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] 田村忠久: "シンチレーティング・ファイバーによる一次電子観測" 飛躍体による宇宙線観測研究会(東大宇宙線研). (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] 鳥居祥二: "シンチファイバーによる電子観測" 大気球シンポジウム(宇宙科学研究所). 98-103 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 鳥居祥二: "シンチファイバーによる一次電子観測I" 大気球シンポジウム(宇宙科学研究所). (1994)

    • Related Report
      1993 Annual Research Report
  • [Publications] 村上浩之: "シンチファイバーを用いた一次電子観測用データ処理システム" 大気球シンポジウム(宇宙科学研究所). (1994)

    • Related Report
      1993 Annual Research Report

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Published: 1993-04-01   Modified: 2021-12-10  

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