n-Gd俘获测量模拟研究

Simulation of n-Gd Capture Measurement

基于兰州近物所的γ球探测器,利用探测器模拟技术,对测量n-Gd俘获之后的γ能谱和多重数实验方案进行优化,通过对比输入的γ能谱与重建的γ能谱,给出实验条件的最优值,包括放射源的选择,靶物质的尺寸和材料,靶物质中Gd的浓度,以及重建算法中多重数的定义等。

This paper is based on the gamma ball detector in Institute of Modern Physics,using the detector simulation technology,to optimize the experiment program of the n- Gd capture gamma rays measurement. By contrast the input and reconstruction γ spectrum,the optimal values of experimental conditions are given,including the choice of neutron sources,the size and material of the target substance,the Gd mass fraction,the multiplicity definition in reconstruction algorithm and so on.