Development of Fiber Optic Radiation Monitor using Plastic Scintillation Fibers.

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  • OKA Toru
    Industrial Electronics & Systems Laboratory, Mitsubishi Electric Corporation
  • FUJIWARA Hirotsugu
    Industrial Electronics & Systems Laboratory, Mitsubishi Electric Corporation
  • TAKASHIMA Kazuo
    Industrial Electronics & Systems Laboratory, Mitsubishi Electric Corporation
  • USAMI Teruo
    Industrial Electronics & Systems Laboratory, Mitsubishi Electric Corporation
  • TSUTAKA Yoshikazu
    Energy and Industrial Systems Center, Mitsubishi Electric Corporation

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  • Development of Fiber Optic Radiation Mo

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Abstract

We have developed a radiation monitor by using plastic scintillation fibers (PSF), which we call the fiber optic radiation monitor. For wide-area radiation monitoring, the detection part needs to be longer, therefore we have produced a prototype monitor by combining the PSF and the silica fiber for optical propagation.<BR>In this paper we first explain the characteristics when silica fiber of 100m long is connected to the PSF. We found that in this case, the position resolution would drop. In order to determine the cause, we observed the aspects of optical pulse propagation. It was found that the light is transmitted through the silica fiber and is detected at fiber end as single photons, and the resolution deteriorated due to the difference in the propagation path of each of photons.<BR>We next explain the prototype fiber optic radiation monitor with a detection length of 20m and a total length of 60m, and its performance.

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