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Proceedings Paper

Calculation of detection efficiency of the fiber-optic sensor to measure radioactive contamination using MCNP simulation
Author(s): Hanyoung Joo; Arim Lee; Rinah Kim; Chan Hee Park; Joo Hyun Moon
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Paper Abstract

In this paper, a fiber-optic radiation sensor (FORS) was developed to measure gamma rays from the radionuclides frequently found in radioactively contaminated soil. The sensing probe of the FORS was made of an inorganic (Lu,Y)2SiO5:Ce (LYSO:Ce) scintillator, a mixture of epoxy resin and hardener and a plastic fiber. The FORS was applied to measure gamma rays from Cs-137 source (1.1 μCi) in a disk shape. Also, MCNP simulation was performed for the same geometry as that in the experimental setup. Comparison between measurements by the FORS and MCNP simulation showed that the detection efficiency of the fiber-optic sensor was about 19.2%. The FORS is expected to be useful in measuring gamma rays from the radioactive soil at nuclear facility site.

Paper Details

Date Published: 23 September 2015
PDF: 6 pages
Proc. SPIE 9577, Optical Modeling and Performance Predictions VII, 95770G (23 September 2015); doi: 10.1117/12.2187674
Show Author Affiliations
Hanyoung Joo, Dongguk Univ. (Korea, Republic of)
Arim Lee, Pohang Accelerator Lab. (Korea, Republic of)
Rinah Kim, Dongguk Univ. (Korea, Republic of)
Chan Hee Park, Dongguk Univ. (Korea, Republic of)
Joo Hyun Moon, Dongguk Univ. (Korea, Republic of)

Published in SPIE Proceedings Vol. 9577:
Optical Modeling and Performance Predictions VII
Mark A. Kahan; Marie B. Levine-West, Editor(s)

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