Gamma-ray dosimetry system using radiation-resistant optical fibers and a luminescent material

Author

Toh, K. ; Nakamura, T. ; Yamagishi, Hisao ; Sakasai, K. ; Soyama, K. ; Nagata, Satoshi ; Shikama, T.

Author_Institution

J-PARC center, Japan Atomic Energy Agency, Tokai, Japan

fYear

2013

fDate

23-27 June 2013

Firstpage

1

Lastpage

4

Abstract

Gamma-ray dosimetry system using radiation-resistant optical fibers and a luminescent material was developed for use in a damaged Fukushima Dai-ichi nuclear power plant. The system was designed to be compact and unnecessary of an external supply of electricity to a radiation sensor head with a contaminated working environment and restricted through-holes to a measurement point in the damaged reactor. The system can detect a gamma-ray dose rate at a measurement point using a couple of optical fibers and a luminescent material with a coincidence method. This system demonstrated a linear response with respect to the gamma-ray dose rate from 0.5 mGy/h to 0.1 Gy/h and the system had a capability to measure the dose rate of more than 10² Gy/h.

Keywords

coincidence techniques; dosimetry; gamma-ray apparatus; nuclear power stations; optical fibres; Fukushima Dai-ichi nuclear power plant; coincidence method; electricity supply; gamma-ray dosimetry system; luminescent material; radiation sensor; radiation-resistant optical fibers; Dosimetry; Gamma-rays; Materials; Optical fiber amplifiers; Optical variables measurement; Radiation effects; Coincidence method; Dose rate; Gamma-ray; Luminescent material; Radiation-resistant optical fiber;

fLanguage

English

Publisher

ieee

Conference_Titel

Advancements in Nuclear Instrumentation Measurement Methods and their Applications (ANIMMA), 2013 3rd International Conference on

Conference_Location

Marseille

Print_ISBN

978-1-4799-1046-5

Type

conf

DOI

10.1109/ANIMMA.2013.6727904

Filename

6727904