反应堆瞬发伽玛活化分析装置屏蔽性能研究  

Study on Shielding Performance of Prompt Gamma Neutron Activation Analysis Facility on China Advanced Research Reactor

作　　者：孙洪超[1] 洪哲[2] 肖才锦[3] 姚永刚[3] Sun Hongchao;Hong Zhe;Xiao Caijin;Yao Yonggang(China Institute for Radiation Protection,Taijuan 030006, China;Nuclear and Radiation Safety Center of MEP, Beijing 100082, China;China Institute of Atomic Energy,Beijing 102413, China)

机构地区：[1]中国辐射防护研究院,山西太原030006 [2]环境保护部核与辐射安全中心,北京100082 [3]中国原子能科学研究院,北京102413

出　　处：《环境科学与管理》2018年第4期133-136,共4页Environmental Science and Management

摘　　要：瞬发伽玛活化分析是一种高灵敏、非破坏的核分析技术。反应堆瞬发伽玛中子活化分析装置屏蔽设计是保护实验人员和提高装置分析灵敏度的重要保障。采用蒙特卡罗方法计算了中国先进研究堆瞬发伽玛活化分析装置的屏蔽性能和测量本底。利用公式修正的通过单晶铋过滤器的中子束流参数,使后续辐射水平计算结果更准确;采用分段-衔接的方法节省了计算时间。模拟结果显示,瞬发伽玛活化分析装置屏蔽性能满足辐射防护和低本底的要求,可为后续辐射防护措施的制定,实验人员辐射剂量优化以及同类装置屏蔽设计提供参考。Prompt Gamma Neutron Activation Analysis is a highly sensitive and nondestructive nuclear analytical technique. The shielding design of the Prompt Gamma Neutron Activation Analysis facility is the important guarantee for protecting research-ers and increasing sensitivity. The shielding performance of the whole facility is obtained by use of Monte - Carlo calculation. Some approaches are adopted for obtaining beam parameter and saving the calculating time. The sdesign meets the requirements of radiation protection, and low gamma background. Some help was etion measures,staff radiation dose optimization and shielding design of other similar systems.

关 键 词：瞬发伽玛中子活化分析 装置屏蔽设计 中子截面 辐射防护 

分 类 号：X830.1[环境科学与工程—环境工程]