A 52 mm cubic scintillating fiber camera with 75mmΦ gated-image intensifier as a dosimeter in space

Haruhisa Matsumoto, Hajime Kawakami, Kazuhiro Terasawa, Tadayoshi Doke, Tateo Goka, Wang Zhao, Qian Song, Binxun Ye, Houkun Ni, Ian Ferguson, John Howorth, Takashi Nozaki, Yukio Uchihori

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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.

Original languageEnglish
Title of host publicationInfrared and Photoelectronic Imagers and Detector Devices II
DOIs
Publication statusPublished - 2006 Nov 6
Externally publishedYes
EventInfrared and Photoelectronic Imagers and Detector Devices II - San Diego, CA, United States
Duration: 2006 Aug 132006 Aug 14

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume6294
ISSN (Print)0277-786X

Other

OtherInfrared and Photoelectronic Imagers and Detector Devices II
CountryUnited States
CitySan Diego, CA
Period06/8/1306/8/14

Keywords

  • Image intensifier
  • LET
  • Neutron detector
  • Plastic scintillating fiber

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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