CFETR氦冷固态增殖剂包层产氚性能研究及优化

Study and Optimization on Tritium Production Performance of CFETR Helium Cooled Solid Breeder Blanket

摘要: 氦冷固态增殖剂包层是中国聚变工程实验堆（CFETR）的3种候选包层概念之一。本文基于中国核工业西南物理研究院提出的一种氦冷固态增殖剂包层概念，通过蒙特卡罗输运程序MCNP5建立了包层三维中子学模型，探究了不同几何布置方案及结构设计参数对包层产氚性能的影响，得到了全堆氚增殖比（TBR）及极向各包层模块产氚分布，并由优化后的模型得到了包层模块核热分布。结果表明，优化后的TBR达到1.177，满足氚自持的最低要求。

Abstract: The helium cooled solid breeder blanket is one of the three candidate blanket concepts of Chinese Fusion Engineering Test Reactor (CFETR). Based on the concept of helium cooled solid breeder blanket proposed by Southwestern Institute of Physics, the three-dimensional neutronic model of CFETR helium cooled solid breeder blanket was established by Monte Carlo transport program MCNP5, and the effects of different geometric arrangement schemes and structural parameters on tritium breeding ratio (TBR) and the TBR in each blanket module were obtained. The results show that the optimized TBR reaches 1.177 and meets the requirement of tritium self-sufficiency.