Optimization study on neutron spectrum unfolding based on the least-squares method

作     者：Hong-Hu Song Yong-Gang Yuan Tai-Ping Peng Yang Yang Yong-Gang Mo Jing Wu 

作者机构：Institute of Nuclear Physics and ChemistryChina Academy of Engineering Physics 

出 版 物：《Nuclear Science and Techniques》 (核技术（英文）)

年 卷 期：2018年第29卷第8期

页      面：193-200页

核心收录：

学科分类：08[工学] 0827[工学-核科学与技术] 082701[工学-核能科学与工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：supported by the Funding Agency ITER(No.2014GB11204) 

主　　题：优化 光谱 中子 学习 平方 蒙特卡罗模拟 反应矩阵 PHS 

摘      要：The response functions and pulse height spectrum(PHS) of a 2 ×2 BC501A detector were obtained through a general-purpose Monte Carlo simulation toolkit,Geant4.A relatively simple but effective method was adopted to unfold the *** regarding the response matrix were proposed to optimize the unfolding *** results indicate that the accuracy of the unfolding can be greatly improved using many incident neutrons with a wide energy range,a proper energy interval,and an appropriate channel width of the response *** above-mentioned method was verified by unfolding three different types of simulated spectrum,the results of which are in good accord with the simulated distribution.