强激光与粒子束2017，Vol.29Issue(12)：94-97,4.DOI:10.11884/HPLPB201729.170235
基于蒙特卡罗方法的全身计数器设计研究
Design research of whole body counter based on Monte Carlo method
李进 1周巍 1姚飞 2杨素 1张锐1
作者信息
- 1. 绵阳市维博电子有限责任公司,四川绵阳621900
- 2. 中国兵器装备集团自动化研究所核辐射监测研究实验室,四川绵阳621900
- 折叠
摘要
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.关键词
MCNP模拟/NaI探测器/探测效率/本底/脉冲沉积Key words
MCNP simulation/NaI detector/detection efficiency/background/pulse deposition分类
能源科技引用本文复制引用
李进,周巍,姚飞,杨素,张锐..基于蒙特卡罗方法的全身计数器设计研究[J].强激光与粒子束,2017,29(12):94-97,4.
