CAP1000核电厂堆外探测器响应函数计算方法研究

堆外探测器响应函数代表了堆芯活性区各组件对堆外探测器读数的贡献,反映了堆芯功率分布与探测器读数的关系。本文利用二维离散纵标法(S_N)程序DORT,研究其共轭输运方法,建立CAP1000反应堆模型,分析其堆外探测器径向和轴向响应函数及其特性,并与采用DORT程序正向输运计算的结果进行比较。研究表明,共轭输运方法可以极大简化计算量,且计算结果与正向输运方法结果符合较好。

Research of ExGcore Detector Response Function Calculation method for CAP1000 Nuclear Power Plant

Ex-core detector response function represents the contribution to the detector tally from each reactor core assemblies,reflects the relationship between reactor core power distribution and detector tally.In this paper,using the two-dimensional discrete coordinate method (SN ) program DORT to make the research of adj oint transport method,establish the CAP1000 reactor model,calculate its ex-core detector response function and analyse its characteristic in radial and axial direction.The research shows that the adj oint calculation could increase the calculation efficiency,and its calculation results are nearly accordant with the adj oint calculation results.