HCSB DEMO中子通量谱分析及活化片法测量系统概念设计研究

摘要

Monte Carlo particle transport code (MCNP) was applied to build the model of HCSB DEMO. The neutron flux spectra of HCSB DEMO has been analyzed. The foils were selected according to characteristics of the neutron flux spectra. Based on the rabbit radiation system and the foil activation method, the preliminary design of the neutron detection system was performed, which can be applied to detect the breeder blanket neutron of HCSB DEMO. The functions of the components of the system was introduced. The specific reaction rates of the foils were calculated when the foils are irradiated in the irradiation station of the detection system in HCSB DEMO. The emission rates and the counting rates of the characteristicγ rays were calculated. A reasonable operation scheme of the system was obtained and it can be used to detect the breeder blanket neutron.%利用蒙特卡罗粒子输运程序(MCNP)对氦冷固态增殖剂包层聚变示范堆(HCSB DEMO)做了中子通量谱分析。根据中子通量谱特点选出活化片材料，根据跑兔系统和活化片法测中子通量的原理设计出适用于测量HCSB DEMO增殖包层中子的活化片法测量系统，并对其各组成部分及功能做了说明。计算了活化片在测量系统辐照端辐照时的活化反应率、活化片特征γ射线发射率及特征γ计数率，并得到一套合理的测量方案，用于HCSB DEMO包层中子的测量。