TITLE:
Development of a Gamma Spectroscopy Detector Based on SiPMs and 1 Ce:GAGG Scintillator
AUTHORS:
Qiang Wang, Zetao Zhang, Yuchong Ding, Xuanhou Hu, Xiong Xiao, Biao Wang, Jingjing Qu, Qianyin Wan, Yang Xu
KEYWORDS:
Ce:GAGG, Gamma Spectroscopy, Detector, SiPMs, Energy Resolution
JOURNAL NAME:
Journal of Applied Mathematics and Physics,
Vol.11 No.7,
July
31,
2023
ABSTRACT: In the field of nuclear radiation detection, sodium iodide (NaI(Tl)) and lanthanum bromide (LaBr3) are the primary scintillation crystals used for energy spectrum detectors. Furthermore, energy spectrum detectors based on gadolinium gallium aluminum garnet (Ce:GAGG) scintillation crystals are minor. In this work, a 1-inch Ce:GAGG and Silicon Photomultipliers (SiPMs) are employed to construct a detector, and the coupled medium was silicone oil. An optimal SiPMs quantity scheme for the energy resolution was determined by varying the number of SiPMs coupled to Ce:GAGG and studying the effect of the different number of SiPMs on the energy resolution of the detector. Energy-resolution contrast experiments between Ce:GAGG and NaI(Tl) were performed using this scheme. The experimental results demonstrate that increasing the number of SiPMs enhances the energy resolution of the detector significantly. Notably, the energy resolution of the Ce:GAGG detector is comparable to that of the NaI(Tl) detector. Additionally, both detectors exhibit an energy linearity exceeding 99.9%.