Radiation distribution sensing with normal optical fiber

Author

Naka, R. ; Kawarabayashi, J. ; Uritani, A. ; Iguchi, T. ; Kaneko, J. ; Takeuchi, H. ; Kakuta, T.

Author_Institution

Dept. of Nucl. Eng., Nagoya Univ., Japan

Volume

1

fYear

2000

fDate

2000

Abstract

The purpose of this study is to develop a radiation distribution monitor using a normal plastic optical fiber. The monitor has a long operating length and can obtain continuous radiation distributions. A principle of;the position sensing is based on a time-of-flight technique. The monitor is sensitive to beta rays or charged particles, gamma rays, and fast neutrons. The spatial resolutions for beta rays ( ⁹⁰Sr-⁹⁰Y), gamma rays (¹³⁷Cs) and D-T neutrons are 30 cm, 37 cm and 13 cm, respectively. The detection efficiencies for the beta rays, the gamma rays and D-T neutrons are 0.11%, 1.6×10^-5% and 1.2×10^-4%, respectively. The effective attenuation length of the detection efficiency is 18 m. In this paper, we describe the basic characteristics of this monitor

Keywords

Cherenkov counters; beta-ray detection; fibre optic sensors; gamma-ray detection; neutron detection; position sensitive particle detectors; solid scintillation detectors; D-T neutrons; beta rays; continuous radiation distributions; detection efficiency; effective attenuation length; gamma rays; normal plastic optical fiber; radiation distribution sensing; spatial resolutions; time-of-flight technique; Attenuation; Beta rays; Gamma ray detection; Gamma ray detectors; Gamma rays; Neutrons; Optical fibers; Plastics; Radiation monitoring; Spatial resolution;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2000 IEEE

Conference_Location

Lyon

ISSN

1082-3654

Print_ISBN

0-7803-6503-8

Type

conf

DOI

10.1109/NSSMIC.2000.949181

Filename

949181