CARR自给能探测器实验设计与验证研究

Study on Self-Powered Neutron Detector Experiment Design and Verification in CARR

辐照靶件的释热计算对堆内实验设计影响重大。本文依据在CARR堆上开展的自给能探测器实验,分析了不同核评价数据库在辐射俘获反应释热计算上的差异来源,并对较早版本数据库的计算结果进行了一定的修正。实验结果表明,以ENDF/B-VⅢ.0等库为代表的数据库计算结果更为合理,并建议研究者在进行后续堆内实验设计时,关注KERMA因子的能量平衡情况,优先采用数据更为完备的核评价数据库进行计算。

Heat releasing calculation for irradiated targets have a tremendous influence on in-core experiment design.Based on the self-powered neutron detector experiment in CARR,the difference of heat releasing calculation results on radioactive capture reaction with several evaluated nuclear data libraries has been studied,and a modification to the calculation with earlier database edition has been implemented.The experimental results show that the heat releasing calculation results with ENDF/B-VⅢ.0 are more reasonable,and a evaluated nuclear data library edition with more data is always suggested to be used for future in-core experiment design.Users should check if the KERMA factors and energy balance are adequate or not to get reliable results.