SuperMC在ITER中子学建模中的应用  

The Application of SuperMC in ITER Neutronics Modeling

作　　者：俞盛朋[1] 吴斌[1] 宋婧[1] 龙鹏程[1] 胡丽琴[1] 吴宜灿[1] 

机构地区：[1]中国科学院核能安全技术研究所,中国科学院中子输运理论与辐射安全重点实验室,安徽合肥230031

出　　处：《核科学与工程》2016年第1期84-87,共4页Nuclear Science and Engineering

基　　金：中国科学院战略性先导科技专项XDA03040000;国家自然科学基金91026004与11305205;国家ITER973计划2014GB112001等资助

摘　　要：安全高效的新型核能系统(聚变堆和先进裂变堆等)的几何结构、材料种类与中子源特性与传统核反应堆有很大不同,其时空分布复杂,传统基于规则体组合近似的蒙特卡罗粒子输运手工建模方式存在难度大、精度低、工作量大、且易出错的问题。针对该问题,SuperMC发展了基于体面混合与四级栅元层次树的中子输运非规则建模方法。本文介绍了SuperMC在系列ITER中子学标准模型创建中的应用,对比结果表明SuperMC将ITER中子学建模效率提升了千倍以上。The geometry structure, materials and Neutron source characteristics of new safety and efficient nuclear systems are very different from tradition nuclear reactors. Describing and verifying of their models for Monte Carlo transport simulation with tradition manual method are time-consuming and error-prone. Irregular modeling method based on ＂constructive solid/surface geometry＂ and ＂four levels hierarchical tree＂ has been implemented in SuperMC. The application of SuperMC in ITER neutronics modeling has been presented with the representative ITER neutronics reference models. The comparison results demonstrated that SuperMC has enhanced the efficiency of ITER neutronics modeling for more than one thousand times.

关 键 词：蒙特卡罗 非规则建模 SuperMC ITER 

分 类 号：O571[理学—粒子物理与原子核物理]