【摘要】 为了对加速器驱动次临界系统(Accelerator Driven System)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ADS的中子性能和核数据库及计算程序的验证。本文开发了ANS N-DOT4.2-ORIGEN2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、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,取得了满意的结果。更多还原

【Abstract】 In order to investigate the neutron economy and safety of Accelerator Driven System, IAEA launched the Co-ordinated Researched Program (CRP), and issued an ADS benchmark. This ADS bench-mark was divided into several stages, and the 1st stage devoted to analyzing the neutron performances of ADS and validating the nuclear databases and the codes. The burnup code system ANISN-DOT4.2-ORIGEN2 is developed. Initial enrichments of 233U which correspond to all given initial (BOL) keff values are calculated. and then, the spatial distributions of power density (BOL), the void reactiv-ity effects, the spallation source effectiveness *j, 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 a good agreement with those of various countries.更多还原