Design research of whole body counter based on Monte Carlo method

Li Jin; Zhou Wei; Yao Fei; Yang Su; Zhang Rui

doi:10.11884/HPLPB201729.170235

Volume 29 Issue 12

Feb. 2018

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Article Navigation > High Power Laser and Particle Beams > 2017 > 29(12): 126005

Wang Weijie, Zhou Haijing. Surface electromagnetic modes of SiC and non-linear optimization[J]. High Power Laser and Particle Beams, 2015, 27: 103206. doi: 10.11884/HPLPB201527.103206

Citation:

Li Jin, Zhou Wei, Yao Fei, et al. Design research of whole body counter based on Monte Carlo method[J]. High Power Laser and Particle Beams, 2017, 29: 126005. doi: 10.11884/HPLPB201729.170235

Wang Weijie, Zhou Haijing. Surface electromagnetic modes of SiC and non-linear optimization[J]. High Power Laser and Particle Beams, 2015, 27: 103206. doi: 10.11884/HPLPB201527.103206

Citation:

Li Jin, Zhou Wei, Yao Fei, et al. Design research of whole body counter based on Monte Carlo method[J]. High Power Laser and Particle Beams, 2017, 29: 126005. doi: 10.11884/HPLPB201729.170235

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Design research of whole body counter based on Monte Carlo method

doi: 10.11884/HPLPB201729.170235

1.
Mianyang Weibo Eletric Company,Mianyang 621900,China;
2.
Nuclear Radiation Monitoring Laboratory,Automation Research Institute of China South Industries Group Corporation,Mianyang 621900,China

Received Date: 2017-06-21
Rev Recd Date: 2017-08-29
Publish Date: 2017-12-15

Abstract

Abstract

The whole body counter is used to monitor the contamination of the human body and has a high requirement for the minimum detection limit (MDA). In order to have a better sensitivity for the whole body counter, it is necessary to reduce the background radiation and improve the radiation detection efficiency. Based on MCNP5, the energy response of the NaI detector in the geometric position is simulated. The position of the detector and the angle of the collimator are studied. At the same time, the shielded structure with different thickness is simulated and analyzed. The study shows that when the thickness of the shielded steel plate is 14.9 cm, the background radiation can be reduced to a large extent. In the source structure to detect the cavity collimator angle above 26, when the distance between the detector and the body mold is 20 cm, the detector can get the ideal energy spectrum response and detection efficiency.
- MCNP simulation,
- NaI detector,
- detection efficiency,
- background,
- pulse deposition

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