摘要
建立高温气冷堆核电厂示范工程(HTR-PM)反应堆堆外探测器空间响应函数的计算模型。基于共轭输运理论,分别使用蒙特卡罗程序(MCNP)和三维离散纵标(SN)程序TORT计算高温气冷堆堆外探测器空间响应函数。对堆外探测器空间响应函数主要特性的分析及对2种计算结果的比较表明:SN程序TORT的计算结果和MCNP的计算结果一致;基于共轭中子输运理论建立堆外探测器读数和堆芯功率分布的映射关系(探测器空间响应函数)可行;MCNP的计算效率较低,得到三维分布的空间响应函数存在较大的统计误差;堆外探测器读数主要由正对探测器的堆芯局部区域的高能中子产生。
The calculation model of ex-core detector spatial response function for the High-Temperature gas-cooled Reactor-Pebble-bed Module（HTR-PM） is constructed.Based on the adjoint transport theory,the ex-core detector spatial response function is calculated by the Monte Carlo method program（MCNP） and 3D discrete ordinate method program（TORT）.The characteristic analysis of ex-core detector spatial response function and comparison of these two results indicates that the result of 3D discrete ordinate method program accords with that of Monte Carlo method program,the adjoint transport theory is appropriate to construct the relationship of ex-core detector reading and in-core power distribution which is named as detector spatial re-sponse function,and the reading of ex-core detector is mainly contributed by the high energy group neutrons of the region facing to ex-core detector.
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2011年第6期1-6,共6页
Nuclear Power Engineering
基金
国家自然科学基金资助项目(10675071)
关键词
高温气冷堆
空间响应函数
共轭输运
蒙特卡罗程序
离散纵标法
High temperature gas-cooled reactor
Spatial response function
ajoint
Monte Carlo method program（MCNP）
Discrete ordinate method
