一种新型Ce∶GAGG闪烁探测器性能研究  

Study on the Performance of a Novel Ce∶GAGG Scintillation Detector

作　　者：王璐[1] 王强 屈菁菁 董鸿林 方承丽 丁雨憧[1] WANG Lu;WANG Qiang;QU Jingjing;DONG Honglin;FANG Chengli;DING Yuchong(The 26th Institute of China Electronics Technology Group Corporation, Chongqing 400060, China)

机构地区：[1]中国电子科技集团公司第二十六研究所,重庆400060

出　　处：《压电与声光》2020年第6期806-809,共4页Piezoelectrics & Acoustooptics

基　　金：2016年工信部工业强基工程基金资助项目(TC160A310-17)。

摘　　要：该文将新型掺铈钆稼铝石榴石(Ce∶GAGG)闪烁晶体与CR-173光电倍增管耦合,并将其和分压电路、高压模块、前放电路一起封装在铝合金外壳中,制成新型Ce∶GAGG闪烁探测器。研究了不同尺寸Ce∶GAGG闪烁晶体、不同耦合方式及反射层封装材料对新型Ce∶GAGG闪烁探测器光产额和能量分辨率的影响,同时与封装好的1英寸(1英寸=2.54 cm)掺铊碘化钠(NaI(Tl))闪烁晶体进行对比实验,并对Ce∶GAGG和NaI(Tl)闪烁探测器的能量线性进行测量。实验结果表明,小体积的Ce∶GAGG闪烁探测器性能最好;光学硅脂耦合可提高闪烁探测器的性能;银反射膜(ESR膜)材料封装闪烁探测器性能最好;Ce∶GAGG闪烁探测器性能优于NaI(Tl)闪烁探测器。In this work,a new Ce∶GAGG scintillation crystal is coupled with the CR-173 photomultiplier tube,and then is packaged in an aluminum alloy shell together with voltage divider circuit,high voltage module and preamplifier circuit to fabricate a novel Ce∶GAGG scintillation detector.The effects of different sizes of Ce∶GAGG scintillation crystals,different coupling modes and different reflective layer packaging materials on the light yield and energy resolution of the Ce∶GAGG scintillation detector are studied,at the same time,it is compared with the packaged 1 inch(1 inch=2.54 cm)thallium doped sodium iodide(NaI(Tl))scintillation crystal,and the energy linearity of Ce∶GAGG and NaI(Tl)scintillation detectors is measured.The experimental results show that the small size of Ce∶GAGG scintillation detector has the best performance;the optical silicone coupling can significantly improve the performance of the scintillation detector;the enhanced specular reflector(ESR)material packaging scintillation detector has the best performance;the performance of Ce∶GAGG scintillation detector is better than NaI(Tl)scintillation detector.

关 键 词：掺铈钆稼铝石榴石(Ce∶GAGG)闪烁晶体 探测器 光电倍增管 光产额 能量分辨率 

分 类 号：TN29[电子电信—物理电子学] TL812[核科学技术—核技术及应用]