【摘要】 为了对加速器驱动次临界系统(Accelerator Driven System,ADS)的中子经济性和安全性做进一步研究,IAEA启动了ADS合作研究计划,提出了ADS基准题。基准题分为几个阶段,第一阶段主要致力于中子性能和核数据库及计算程序的验证。该文开发了ANIAN-DOT4.2-0RIGEN2输运-燃耗程序系统,并对该基准题进行了给定次临界度下的富集度及零燃耗下的径向与轴向功率分布、空泡效应、外源价值和燃耗的计算等,取得了满意的结果。更多还原

【Abstract】 In order to investigate neutron economy and safety of Accelerator Driven System, IAEA launched the Co-ordinated Researched Program (CRP) and issued an ADS benchmark. This ADS benchmark was divided into several stages. The 1st stage devoted to analyze neutron performances of ADS and validate the nuclear databases; and the codes and burnup code system ANISN-DOT4.2-ORIGEN2 is developed. Initial enrichments of 233U which corresponds to all given initial (BOL)Keff values are calculated. Then, the spatial distributions of power density (BOL), the void reactivity effects, the spallation source effectiveness ψ*, and the evolution curves of Keff and source as function of time are also calculated for every given Keff(BOL). The numerical results are in good agreement with those of various countries.更多还原