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中文摘要：
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。
英文摘要：
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.
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