11 MeV质子回旋加速器自屏蔽体MC模拟设计  

Design of Self-shielding Body on 11 MeV Proton Cyclotron by MC Method

作　　者：叶豪 胡斌[1] 张焱 汤彬[1] 张雄杰[1] 张丽娇[1,2] 田兴宇 周鹏飞[1] 程璨[3] YE Hao;HU Bin;ZHANG Yan;TANG Bin;ZHANG Xiong-jie;ZHANG Li-jao;TIAN Xing-yu;ZHOU Peng-fei;CHENG Can(Laboratory of Nuclear Resources and Environment,East China University of Technology,Nanchang Jiangxi 330013,China;Engineering Research Center of Nuclear Technology Application,Ministry of Education,East China University of Technology,Nanchang Jiangxi 330013,China;College of Material Science and Technology,Nanjing Jiangsu University of Aeronautics and Astronautics,Nanjing,220016)

机构地区：[1]东华理工大学核技术应用教育部工程研究中心,江西南昌330013 [2]东华理工大学江西省放射性地学大数据技术工程实验室,江西南昌330013 [3]南京航空航天大学材料科学与技术学院,江苏南京220016

出　　处：《核电子学与探测技术》2022年第4期723-728,共6页Nuclear Electronics & Detection Technology

基　　金：国家自然科学基金(41904160);国防科工局“十三五”核能开发项目子课题(20201192-01);核技术应用教育部工程研究中心开放基金(HJSJYB2020-2,HJSJYB2020-1);核技术应用教育部工程研究中心开发基金(HJSJYB2018-1)。

摘　　要：应用MCNP程序模拟设计了一套11MeV质子回旋加速器的自屏蔽体。该自屏蔽体由慢化层和吸收层两个部分组成。首先通过源项分析得到了本次屏蔽设计的中子能谱及其角分布,再通过材料效果的模拟对比确定了慢化层材料为聚乙烯和吸收层材料为含硼聚乙烯,最后给出了配备该自屏蔽体后的加速器机房的预评价设计。A set of self-shielding body of 11 MeV proton cyclotron was designed and simulated by MCNP program.The self-shielding body consists of two parts,a moderating layer and an absorbing layer.Firstly,the neutron energy spectrum and angular distribution of this shielding design were obtained through source term analysis,and then the material of the moderator layer was determined to be polyethylene and the material of the absorption layer to be boron-containing polyethylene through the simulation and comparison of material effects.Pre-evaluation design of the accelerator room equipped with the self-shielding body.

关 键 词：MCNP 回旋加速器 自屏蔽 中子 辐射防护 

分 类 号：TL77[核科学技术—辐射防护及环境保护] TL54