反应堆用核截面处理程序RXSP的研发与验证  

Development and Validation of Nuclear Cross Section Processing Code for Reactor Analysis-RXSP

作　　者：余健开[1] 李松阳[1] 王侃[1] 王冠博[2] 余纲林[1] 

机构地区：[1]清华大学工程物理系,北京100084 [2]中国工程物理研究院,四川绵阳621900

出　　处：《核动力工程》2013年第S1期10-13,共4页Nuclear Power Engineering

基　　金：国家自然科学基金资助(91126017);清华大学自主科研计划课题(20111081104)

摘　　要：反应堆用核截面处理系统(RXSP)除了具有共振重造、线性化以及能量/角度分布处理等功能外,还实现了快速多普勒展宽、热化库插值、OpenMP并行加速等关键方法和算法。程序验证表明,RXSP能够准确、高效地将ENDF/B库的中子评价核数据制作成堆用蒙特卡罗程序(RMC)计算所需的连续能量点截面库。与评价核数据库的数据处理系统(NJOY)处理生成截面库的微观比较和基准题的宏观验证表明,RXSP与NJOY具有相同的计算精度,而RXSP的处理时间则大大缩短,满足了反应堆物理-热工水力耦合计算中所需的多次大量材料的温度相关截面库更新的要求。此外,RXSP还能处理ENDF/B-Ⅶ.1中子截面库中R-matrixLimited格式的共振参数。The accuracy of the nuclear cross section data is a prerequisite for the accuracy of reactor physics calculations.The code RXSP(Reactor Cross Section Processing Code) is developed by REAL(Reactor Engineering Analysis Laboratory) of Department of Engineering Physics in Tsinghua University.The key methods such as fast Doppler broadening,thermal libraries interpolation,and OpenMP parallel acceleration,have been achieved within RXSP.This code is able to process the original data of ENDF/B(Evaluated Nuclear Data File/B) efficiently and accurately to produce the continuous energy point cross section data which is used for RMC.By comparing with NJOY,the microscopic and integral verifications show that RXSP has the same accuracy as NJOY while RXSP has much less processing time to meet the demand in the reactor physics-thermal-hydraulic coupling calculations requiring the frequent updates of a large number of materials and temperature points.In addition,RXSP make it available to process the resonance parameters of the R-matrix Limited format.

关 键 词：RXSP 快速多普勒展宽 R-MATRIX LIMITED 

分 类 号：TL329[核科学技术—核技术及应用]