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为了在满足增殖堆自身氚需要的前提下,提高堆性能参数——支持比,本文利用一维ANISN输运程序,对直接浓缩抑制裂变包层的中子学性能作了优化计算,研究了~6Li丰度和U-233浓度及其分布对包层中子学性能的影响,提出了改进包层设计的几种措施,得到了满意的结果。在堆运行周期内,平均产氚率T可达到1.11,支持比明显提高,达到14,包层中功率密度分布均匀,使堆的安全、冷却问题容易解决,给堆的结构设计带来方便。
In order to improve the heap performance parameter-support ratio, the one-dimensional ANISN transport program was used to optimize the neutron behavior of the direct enrichment suppression fission cladding in order to meet the needs of the reactor itself. 6Li abundance and U-233 concentration and its distribution on the neutron properties of the cladding, several measures to improve the design of the cladding are proposed, and satisfactory results are obtained. During the operation cycle of reactor, the average production rate of tritium T can reach 1.11, the support ratio is obviously increased to 14, and the power density distribution in the cladding is even, so that the safety and cooling problems of the reactor can be easily solved, which brings convenience to the structural design of the reactor.