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- 2023년 04월호
[Appl Radiat Isot .] Dead layer estimation of an HPGe detector using MCNP6 and Geant4
MCNP6와 Geant4를 사용한 HPGe 검출기의 데드레이어 추정 연구UNIST / 이현민, 김희령*
- 출처
- Appl Radiat Isot .
- 등재일
- 2023 Feb
- 저널이슈번호
- 192:110597. doi: 10.1016/j.apradiso.2022.110597. Epub 2022 Dec 5.
- 내용
Abstract
In this study, Monte Carlo simulations were used to calculate the full-energy peak efficiency of a p-type coaxial high-purity germanium (HPGe) detector. The HPGe detector was modeled using MCNP6 and Geant4, and the thickness of the dead layer of germanium crystals was estimated for an accurate simulation. The dead layer was divided into front and side components, where a point source and a Marinelli beaker source were used to estimate each dead layer thickness. The model was validated by comparing the simulated as well as experimental results for the standard sources of cylindrical and Marinelli beakers. The Geant4 results and experimental results matched up to 4% in the 59.54-1836.05 keV energy range, while MCNP6 matched up to 6% when adjusted for coincidence summing effects. HPGe detector modeled in Monte Carlo simulations can be utilized for experimental validation and experimental setup prior to using actual HPGe detectors.Affiliations
Hyeonmin Lee 1, Si Hyeong Sung 1, Seung Hun Shin 1, Hee Reyoung Kim 2
1Department of Nuclear Engineering, Ulsan National Institute of Science and Technology, 50, UNIST-gil, Ulsan, Republic of Korea.
2Department of Nuclear Engineering, Ulsan National Institute of Science and Technology, 50, UNIST-gil, Ulsan, Republic of Korea. Electronic address: kimhr@unist.ac.kr.
- 키워드
- Dead layer; Detection efficiency; HPGe; High-purity germanium detector; Monte Carlo simulation.
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