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Development of the multi-cubic $$gamma$$-ray spectrometer and its performance under intense $$^{137}$$Cs and $$^{60}$$Co radiation fields

Kaburagi, Masaaki   ; Shimazoe, Kenji*; Kato, Masahiro*; Kurosawa, Tadahiro*; Kamada, Kei*; Kim, K. J.*; Yoshino, Masao*; Shoji, Yasuhiro*; Yoshikawa, Akira*; Takahashi, Hiroyuki*

The number of nuclear facilities being decommissioned has been increasing worldwide, in particular following the accident of the Tokyo Electric Power Company Holdings' Fukushima Daiichi Nuclear Power Station in 2011. In these nuclear facilities, proper management of radioactive materials is required. Then, A $$gamma$$-ray spectrometer with four segmentations using small volume CeBr$$_{3}$$ scintillators with a dimension of $$5 times 5 times 5$$ $$rm{mm}^3$$ was developed. The four scintillators were coupled to a multi-anode photomultiplier tube specific to intense radiation fields. We performed the $$gamma$$-ray exposure study under $$^{137}$$Cs and $$^{60}$$Co radiation fields. Under the $$^{137}$$Cs radiation field, the relative energy resolution at 1375 mSv/h was the relative energy resolution at 1375 mSv/h was 9.2$$pm$$0.05%, 8.0$$pm$$0.08%, 8.0$$pm$$0.03%, and 9.0$$pm$$0.04% for the four channels, respectively.

Language

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English

Journal

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Nuclear Instruments and Methods in Physics Research A

Volume

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1010

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Pages

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p.165544_1 - 165544_9

Publication Year/Month

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2021/09

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Paper URL

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https://doi.org/10.1016/j.nima.2021.165544

DOI for research data

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Link to research data related to this paper/report.

Keywords

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CeBr$$_3$$; pixel detector; $$gamma$$-ray spectroscopy; intense radiation field; 福島第一原子力発電所事故; Fukushima Daiichi Nuclear Power Station Accident

Research Facility

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Press Release

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Article of JAEA R&D Review

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Cooperating Institute

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産業技術総合研究所; 東京大学

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Category:Instruments & Instrumentation

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