Study on Thermal Neutron Trap in Core of HFETR
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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.Abstract: In this paper, the thermal neutron traps are studied for HFETR by transport method and diffusion 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 neutron trap, the best radius is 7.5cm(diffusion method) and 2.5cm(transport method), respectively and the maximal thermal flux is 3.2~4.0 times of the one in the non-trap core.
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Key words:
- Thermal neutron trap /
- Thermal neutron flux /
- HFETR
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