【摘要】 采用扩散和输运两种方法对高通量工程试验堆(HFETR)热中子阱进行研究。计算结果表明:水热中子阱的最佳热阱半径为6.0cm,其最大热中子注量率约是无阱时最大热中子注量率的3.1～3.7倍;铍-水热中子阱的最佳热阱半径分别为7.5cm(扩散方法)和2.5cm(输运方法),其最大热中子注量率约是无阱时最大热中子注量率的3.2～4倍.更多还原

【Abstract】 In this paper, the thermal neutron traps are studied for HFETR by transport method and diffu-sion method. The calculation results show that the best radius is 6.0cm for water thermal neutron trap and the maximal thermal flux is 3.1～3.7 times of the one in the non-trap core;and for beryllium-water thermal neu-tron trap, the best radius is 7.5cm(diffusion method) and 2.5cm(transport method), respectively and the maxi-mal thermal flux is 3.2～4.0 times of the one in the non-trap core.更多还原