Characterization of a CLYC detector for underground experiments
Characterization of a CLYC detector for underground experiments
复制标题
用于地下实验的 CLYC 探测器的表征
DOI：
10.1016/j.nima.2018.07.087
复制
发表时间：
2017
期刊：
影响因子：
--
通讯作者：
Spain.
中科院分区：
文献类型：
--
作者：
T. Martinez;A. Rada;D. Cano;R. Santorelli;I. Bandac;P. G. Abia;A. García;A. Ianni;B. Montes;L. Romero;D. V. C. D. I. Energ'eticas;Medioambientales y Tecnol'ogicas;Madrid;Spain Laboratorio Subterr'aneo de Canfranc;Canfranc;Spain.
基于Cs2 LiYCl 6：Ce（CLYC）的大尺寸探测器能够进行γ射线和中子联合谱测量，在核物理和高能物理中具有广泛的应用前景。由于其新奇，全面表征的性能，个人CLYC检测器是非常重要的，以确定其适用范围。在这项工作中，我们报告了一系列广泛的测量与商业2”× 2”CLYC晶体。在662 keV能量下，能量分辨率为4.7%，时间分辨率为1340 ps，中子/γ分离优值为4.2。在Spanatorio Subterráneo de Canfranc（西班牙）进行了专门的测量，用于研究检测器的固有背景。它证明了检测器材料中的相当大的污染，这限制了CLYC在低背景实验中的使用。此外，使用GEANT 4工具包进行了详细的蒙特卡罗模拟，以模拟CLYC探测器对γ射线的响应函数。与实验数据的一个很好的协议已经实现。
Large size detectors based on Cs 2 LiYCl 6: Ce (CLYC) are capable of performing a combined γ-ray and neutron spectrometry and constitute a promising technology for a wide range of applications in nuclear and high energy physics. Due to their novelty, the comprehensive characterization of the performance of individual CLYC detectors is of great importance for determining their range of applicability. In this work we report on a wide series of measurements performed with a commercial 2”× 2” CLYC crystal. Good energy and timing resolution values, of 4.7%(@ 662 keV) and 1340 ps (FWHM) respectively, were achieved, and a neutron/γ separation figure of merit value of 4.2 was obtained. A dedicated measurement for investigating the intrinsic background of the detector was performed at the Laboratorio Subterráneo de Canfranc (Spain). It evidenced a sizeable contamination in the detector materials which poses limits in the use of CLYC in low background experiments. In addition, detailed Monte Carlo simulations with the GEANT4 toolkit were performed for modelling the response function of the CLYC detector to γ-rays. An excellent agreement with the experimental data has been achieved.