高能电子加速器屏蔽体轻量化模拟设计  

Simulation Design of Lightweight Shielding for High-energy Electron Accelerator

作　　者：吴适杰 谢金森[1] 冀东[1,2] 苏晓书 乔宇洁 熊超凡 WU Shijie;XIE Jinsen;JI Dong;SU Xiaoshu;QIAO Yujie;XIONG Chaofan(School of Nuclear Science and Technology,University of South China,Hengyang 421001,China;The Fourth Research and Design Engineering Corporation of CNNC,Shijiazhuang 050021,China;School of Civil Engineering,University of South China,Hengyang 421001,China)

机构地区：[1]南华大学核科学技术学院,衡阳421001 [2]中核第四研究设计工程有限公司,石家庄050021 [3]南华大学土木工程学院,衡阳421001

出　　处：《核电子学与探测技术》2023年第6期1162-1168,共7页Nuclear Electronics & Detection Technology

摘　　要：利用FLUKA软件,对10 MeV电子加速器轻量化屏蔽进行模拟优化设计。从屏蔽源项剂量率优化与屏蔽层材料筛选两方面开展研究。结果显示,在束流扫描窗下布放6 cm厚度水的束流接收槽,可使屏蔽源项剂量率降低约33.17%;筛选出的聚乙烯+铅组合屏蔽材料较混凝土屏蔽体能够大幅度节省空间,减小屏蔽厚度,并使屏蔽体重量降低约81.74%。研究成果可为10 MeV工业辐照电子加速器实现可移动化提供技术支持。The lightweight shielding design of the 10 MeV electron accelerator was optimized and simulated using the FLUKA code.Two separate studies were conducted:optimizing the dose rate of the source term and screening the shielding layer material.The results show that placing a tank filled with 6 cm of water under the electron beam window can reduce the dose rate of the source term by about 33.17%.Compared with the concrete shielding,the lightweight composite shielding material of"polyethylene+lead"can significantly save space,reduce the shielding thickness,and reduce the shielding weight by about 81.74%.The research results can provide technical support for the realization of a mobile 10 MeV industrial irradiation electron accelerator.

关 键 词：高能电子加速器 10 MeV 轫致辐射 组合屏蔽材料 

分 类 号：TL77[核科学技术—辐射防护及环境保护]