Development of gamma-ray detector arrays consisting of diced Eu-doped SrI2 scintillator arrays and TSV-MPPC arrays
Development of gamma-ray detector arrays consisting of diced Eu-doped SrI2 scintillator arrays and TSV-MPPC arrays
复制标题
开发由切割的 Eu 掺杂 SrI2 闪烁体阵列和 TSV-MPPC 阵列组成的伽马射线探测器阵列
DOI：
10.1109/tns.2020.2986460
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发表时间：
2020
影响因子：
1.8
通讯作者：
Yoshikawa A.
中科院分区：
文献类型：
--
作者：
Yoshino M.;Kamada K.;Shoji Y.;Yokota Y.;Kurosawa S.;Yamaji A.;Ohashi Y.;Sato H.;Fujieda K.;Kataoka J.;Yoshikawa A.
本文介绍了切割的SrI 2：Eu阵列的发展和闪烁性能时，与多像素光子计数器（MPPC）阵列耦合。使用特定于卤化物闪烁器的切割技术，开发了高能量分辨率闪烁体阵列，该闪烁体阵列具有成本效益和广泛适用性。所开发的SrI 2：Eu阵列是3 × 3 × 3 mm 3/像素4 × 4矩阵（TYPE 1）和1 × 1 × 1 mm 3/像素9 × 9矩阵（TYPE 2）结构。我们制作了测试伽马射线探测器模块组成的TYPE 1和TYPE 2阵列与MPPC阵列耦合。TYPE 1阵列探测器的平均峰谷比为85.3 ± 14.9，TYPE 2阵列探测器的平均峰谷比为38.5 ± 16.6。对于662 keV伽马射线，TYPE 1和TYPE 2伽马射线探测器获得的平均能量分辨率分别为5.4 ± 0.4%半峰全宽（FWHM）和5.2 ± 0.6% FWHM。TYPE 1和TYPE 2探测器的信号脉冲高度变化在FWHM中分别仅为10.6%和10.4%。这些结果表明，在这篇文章中提出的切割技术可以应用于吸湿卤化物制冷剂。
This article presents the development of diced SrI2:Eu arrays and their scintillation properties when coupled with a multipixel photon counter (MPPC) array. Using a dicing technique specific to halide scintillators, a high-energy resolution scintillator array is developed that is cost-effective and widely applicable. The developed SrI2:Eu arrays are of 3 x 3 x 3 mm3/pixel 4 x 4 matrix (TYPE1) and 1 x 1 x 1 mm3/pixel 9 x 9 matrix (TYPE2) structures. We fabricated test gamma-ray detector modules consisting of the TYPE1 and TYPE2 arrays coupled with an MPPC array. The mean peak to valleys ratio is 85.3 ± 14.9 for the TYPE1 array and 38.5 ± 16.6 for the TYPE2 array detector. The average energy resolutions obtained for the TYPE1 and TYPE2 gamma-ray detectors were 5.4 ± 0.4% full-width at half-maximum (FWHM) and 5.2 ± 0.6% FWHM, respectively, for 662-keV gamma-rays. The variation in the signal pulse height of the TYPE1 and TYPE2 detectors was only 10.6% and 10.4% in FWHM, respectively. These results demonstrated that the dicing technique proposed in this article could be applied to hygroscopic halide scintillators.