Nuclear Engineering and Technology

  • 제54권12호
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  • Pages.4679-4683
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  • 2022
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  • 1738-5733(pISSN)
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  • 2234-358X(eISSN)
한국원자력학회 (Korean Nuclear Society)
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Development of a diverging collimator for environmental radiation monitoring in the industrial fields

  • Dong-Hee Han (Department of Medical Health Science, Kangwon National University) ;
  • Seung-Jae Lee (Department of Radiological Science, Dongseo University) ;
  • Jang-Oh Kim (Health and Medical Education Research Institute, Kangwon National University) ;
  • Da-Eun Kwon (Department of Medical Health Science, Kangwon National University) ;
  • Hak-Jae Lee (ARALE Laboratory Co., Ltd.) ;
  • Cheol-Ha Baek (Department of Medical Health Science, Kangwon National University)
  • 투고 : 2022.06.29
  • 심사 : 2022.08.08
  • 발행 : 2022.12.25
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초록

Environmental radiation monitoring is required to protect from the effects of radiation in industrial fields such as nuclear power plant (NPP) monitoring, and various gamma camera systems are being developed. The purpose of this study is to optimize parameters of a diverging collimator composed of pure tungsten for compactness and lightness through Monte Carlo simulation. We conducted the performance evaluation based on spatial resolution and signal-to-noise ratio for point source and obtained gamma images and profiles. As a result, optimization was determined at a collimator height of 60.0 mm, a hole size of 1.5 mm, and a septal thickness of 1.0 mm. Also, the full-width-at-half-maximum was 3.5 mm and the signal-to-noise ratio was 53.5. This study proposes a compact 45° diverging collimator structure that can quickly and accurately identify the location of the source for radiation monitoring.

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과제정보

This research was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (Ministry of Education, Science and Technology) (No. 2020R1C1C1004584).

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