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Proceedings Paper

A 52mm cubic scintillating fiber camera with 75mmΦ gated-image intensifier as a dosimeter in space
Author(s): Haruhisa Matsumoto; Hajime Kawakami; Kazuhiro Terasawa; Tadayoshi Doke; Tateo Goka; Zhaowang Zhao; Qian Song D.D.S.; Binxun Ye; Houkun Ni; Ian Ferguson; John Howorth; Takashi Nozaki; Yukio Uchihori
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Paper Abstract

The scintillating fiber camera is a type of three-dimensional track detector. Using this camera, we can observe the scintillation track produced along the path of a charged particle, and from its scintillation yield can determine the linear energy transfer (LET) distribution of the charged particle. Such observations are also possible for recoil (charged) particles produced by fast neutrons. From these data, we can estimate the LET distribution of individual charged particles or that of recoil particles produced by neutrons; and finally, we can estimate the dose equivalent due to charged particles and/or fast neutrons. For use as a dosimeter for fast neutrons produced by the interaction between cosmic-ray particles and wall materials of a manned spaceship in space, a 52 mm cubic scintillating fiber camera with a 75 mmΦ gated-image intensifier with a maximum counting rate of 30 Hz was constructed. The dosimeter consists of a stack of scintillation fibers with a sensitive volume of 52 mm × 52 mm × 52 mm and a 75 mm diameter image intensifier for readout from the scintillation fibers. The scintillation yields were measured for high-energy heavy ions such as carbon and argon ions. An energy resolution of 12% full-width half-maximum (FWHM) was obtained for penetrated argon ions of 650 MeV/n. These results demonstrate that this type detector is very useful as a dosimeter for high-energy cosmic rays and their secondary neutrons.

Paper Details

Date Published: 7 September 2006
PDF: 8 pages
Proc. SPIE 6294, Infrared and Photoelectronic Imagers and Detector Devices II, 62940Y (7 September 2006); doi: 10.1117/12.680400
Show Author Affiliations
Haruhisa Matsumoto, Japan Aerospace Exploration Agency (Japan)
Hajime Kawakami, Japan Aerospace Exploration Agency (Japan)
Kazuhiro Terasawa, Japan Aerospace Exploration Agency (Japan)
Waseda Univ. (Japan)
Tadayoshi Doke, Japan Aerospace Exploration Agency (Japan)
Waseda Univ. (Japan)
Tateo Goka, Japan Aerospace Exploration Agency (Japan)
Zhaowang Zhao, National Astronomical Observatories (China)
Qian Song D.D.S., National Astronomical Observatories (China)
Binxun Ye, National Astronomical Observatories (China)
Houkun Ni, Nanjing Institute of Astronomical Optics & Technology (China)
Ian Ferguson, Photek Ltd. (United Kingdom)
John Howorth, Photek Ltd. (United Kingdom)
Takashi Nozaki, Meisei Electric Co. (Japan)
Yukio Uchihori, National Institute of Radiological Sciences (Japan)

Published in SPIE Proceedings Vol. 6294:
Infrared and Photoelectronic Imagers and Detector Devices II
Randolph E. Longshore; Ashok Sood, Editor(s)

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