SPRR-300反应堆中子照相装置准直系统的研制  

Development of collimator system of neutron radiography facility in SPRR-300 reactor

作　　者：唐彬[1] 张松宝[1] 代君龙[1] 王云[1] 胡志勇[1] 

机构地区：[1]中国工程物理研究院核物理与化学研究所

出　　处：《核电子学与探测技术》2005年第6期718-720,756,共4页Nuclear Electronics & Detection Technology

摘　　要：准直器是中子照相装置的关键组件之一,利用石墨为慢化剂,铋为γ过滤器。采用光阑直径、准直器长度、石墨塞长度可调以实现准直比和镉比的大幅度调节,钢结构水箱快门完成了SPRR-300准直系统设计。实验结果显示设计是合理的,成像质量达ASTM-86达二级以上,能满足不同成像技术和不同样品的中子照相需求。A Collimator is the key assemble of neutron radiography facility. The collimator system of neutron radiography facility in the SPRR-300 reactor has been developed by the use of the graphite plug as a moderator, the bismuth block as a gamma filter, and its diaphragm diameter, its length of the collimator and the graphite plug can be adjusted to change collimator ratio and Cd-ratio, and a water tank shutter is used. The experiments shows that the design of the collimator is reasonable, and its image quality can reach more than the second grade of ASTM-86, and it satisfies neutron radiography of varied samples and varied imaging technology.

关 键 词：反应堆 中子照相 准直 

分 类 号：TL81[核科学技术—核技术及应用] TL99