高频高压电子辐照加速器主机室辐射场研究  

Radiation field study on high frequency and high voltage electron irradiation accelerator machine room

作　　者：於国兵 陈志[2] 顾先宝 杜勤 陈乐 李裕熊[2] 

机构地区：[1]安徽省辐射环境监督站,合肥230071 [2]中国科学技术大学核科学技术学院,合肥230027

出　　处：《辐射防护》2015年第2期82-86,92,共6页Radiation Protection

基　　金：国家自然科学基金资助项目(11375181;11375182);中央高校基本科研业务费专项资金(WK2140000004);安徽省省级环境保护科研项目课题(2013-009)

摘　　要：通过使用MCNP模拟计算和实际测量相结合的方法,对高频高压电子辐照加速器主机室辐射场的主要来源和影响其场强的因素进行了分析。结果表明:主机室的辐射场源项贡献主要来源于辐照室电子打靶后的散射辐射,影响主机室内辐射场强度的因素主要是主机室与辐照室之间管道孔的大小,以及管道孔内屏蔽材料的厚度。By using MCNP simulation and measurement,the source terms and the influence factors to its field strength was researched for the machine hall of high frequency and high voltage electron irradiation accelerator. The results show that the source terms in machine hall mainly come from the scattering irradiation after electrons shooting the target in radiation room. The radiation field intensity in the machine hall is determined by the sizes of the pipe hole between the machine hall and radiation room,and the thicknesses of shielding material in the pipe hole.

关 键 词：高频高压电子辐照加速器 主机室 MCNP 源项 

分 类 号：TL503[核科学技术—核技术及应用]