聚变-裂变混合能源堆球模型中子学对算研究  

Comparative Study on Spherical Model of Fusion-Fission Hybrid Energy Reactor

作　　者：邵增 程和平 刘国明 

机构地区：[1]中国核电工程有限公司,北京100840

出　　处：《原子能科学技术》2012年第3期277-281,共5页Atomic Energy Science and Technology

基　　金：国家磁约束核聚变能研究专项资助项目(2010GB111001)

摘　　要：利用蒙特卡罗程序和自主开发的蒙特卡罗-燃耗耦合程序MOCouple-s,对北京应用物理与计算数学研究所提出的聚变-裂变混合能源堆球模型进行了对算研究。对初始时刻及各燃耗时刻下的有效增殖因数、能量倍增因子、氚增殖比、中子源强度等堆芯参数进行了比较,结果总体符合较好。对寿期末重要核素的成分进行了详细比较,除个别核素外,偏差很小,表明所采用的计算程序与核参数库一致性良好。对核参数库的选择、铀水体积比等对燃耗计算结果的影响进行敏感性分析,并对外中子源驱动的次临界堆芯的燃耗计算进行详细讨论,提出可行的燃耗计算基准。The comparative study on fusion-fission hybrid spherical model proposed by the Institute of Applied Physics and Computational Mathematics was performed with Monte-Carlo code and MOCouple-s code. Comparisons of reactor parameters, such as neutron effective multiplication factor, energy multiplication factor, tritium breeding ratio and neutron source intensity, were made. The results agree well with the reference as a whole. The concentrations of important isotopes were also compared in detail. Most of the biases are very small except a tiny fraction of the iotopes. It proves that both codes and nuclear data !ibrary have very good consistency. In calculation of the model used, the burnup sensitivity of nuclear data and uranium-water ratio employed in the simulation model were analyzed. For such a fixed external source driven subcritical reactor core, detailed discussion was made about the burnup calculation method, and a feasible hurnup calculation benchmark was proposed.

关 键 词：混合堆 球模型 对算研究 燃耗 铀水体积比 

分 类 号：TL46[核科学技术—核技术及应用]