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由核数据引起的不确定度是keff计算值不确定度的重要组成部分。为了分析核数据引起的中国实验快堆(CEFR)keff计算值的不确定度,推导给出了基于广义微扰理论(GPT)的计算积分量灵敏度的一般表达式,应用该一般表达式给出了keff的灵敏度计算式,然后基于多群节块扩散理论对keff的灵敏度计算式进行了离散求解,并在NAS系统的基础上开发了不确定度分析程序SUAPH。使用SUAPH计算分析了CEFR堆芯keff关于堆芯各重要核素的裂变截面、平均裂变中子数、俘获
The uncertainty caused by the nuclear data is an important part of the uncertainty of keff calculation. In order to analyze the uncertainty of keff calculated by CEFR caused by nuclear data, a general expression for calculating the integral sensitivity based on generalized perturbation theory (GPT) is derived. The general expression is given Keff sensitivity calculation formula, and then based on multi-group nodal diffusion theory keff sensitivity calculation formula discrete solution, and NAS system based on the development of the uncertainty analysis program SUAPH. Using SUAPH calculations, we analyzed the fission cross sections of CEFR core keffs with respect to the various important nuclides in the core, the average number of fission neutrons, and the capture