摘要
中国散裂中子源(CSNS)的核心部件是一台高能强流质子加速器,其孔道屏蔽是辐射防护设计考虑的重要内容。为确保直线加速器速调管大厅的工作人员辐射安全,本文采用蒙特卡罗程序FLUKA,对直线加速器的主副隧道间屏蔽墙和副隧道上方顶屏蔽的孔道屏蔽效果进行了模拟计算,提出了多种屏蔽优化方案,并按照CSNS工作场所的剂量率限值,分析给出了该处孔道屏蔽结构的优化改进意见。
The China Spallation Neutron Source （CSNS） is an accelertor-based high-power and high- intensities project, the duct shielding structure is an important problem during the radiation protection design. From the radiation safety aspect for the staff working in the Linac Kaystron Hall, this paper adopts the M -C program FLUKA to simulate the duct shielding effect, which located in the main- auxiliary tunnel of Linac and the roof of the auxilary tunnel. After comparing some shielding optimization projects, this paper provides the improved suggestion for duct shielding according to the simulated results and the restricted dose value of the working place.
出处
《辐射防护》
CAS
CSCD
北大核心
2014年第1期11-16,共6页
Radiation Protection
