Characterization of 1-inch CLYC scintillator coupled with 8 × 8 SiPM array
Characterization of 1-inch CLYC scintillator coupled with 8 × 8 SiPM array
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DOI：
10.1016/j.nima.2021.165225
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发表时间：
2021-03
影响因子：
1.4
通讯作者：
Tuchen Huang;Zhibo Zhang
中科院分区：
文献类型：
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作者：
Tuchen Huang;Zhibo Zhang
评价了1英寸CLYC闪烁体与8 × 8阵列3 mm硅光电倍增管（SiPMs，SensL ArrayJ-30035- 64 P）耦合的性能。设计了用于SiPM阵列读出的电压放大器和跨阻放大器电路，并与LED的时序性能进行了比较。中子和伽马脉冲形状的鉴别是用一个12位的数字化器，以500 MSPS的采样率和离线处理。CLYC晶体与SiPM阵列相结合，使用适当设计的单通道跨导放大器读出，在662 keV处产生6.5%的能量分辨率，FOM为4.0，接近2英寸Hamamatsu R6231-100 PMT的性能。在1408 keV能量范围内，SiPM阵列的响应具有良好的线性。采用四通道互阻抗放大器读出，主要在低能区，对PSD性能略有改善。实验结果表明，CLYC晶体结合SiPM阵列具有良好的中子/γ射线分辨能力和合理的能量分辨率，是紧凑型γ、中子双探测装置的理想选择。
The performance of an 1-inch CLYC scintillator coupled with 8 × 8 array of 3 mm silicon photomultipliers (SiPMs, SensL ArrayJ-30035-64P) were evaluated. Voltage amplifier and transimpedance amplifier circuits were developed for SiPM array readout, and their timing performances were compared with LED. Neutron and gamma pulse shape discrimination was implemented with a 12-bit digitizer running at 500 MSPS sampling rate and off-line processing. The CLYC crystal combined with SiPM array, readout with properly designed single channel transimpedance amplifier, yields 6.5% energy resolution at 662 keV and a FOM of 4.0, close to the performance of a 2-inch Hamamatsu R6231-100 PMT with the same crystal. The response of SiPM array was well linear in the energy range up to 1408 keV. Readout with four channel transimpedance amplifiers improves the PSD performance slightly, mainly at low energy region. The experimental results show that CLYC crystal combined with SiPM array has excellent neutron/gamma-ray discrimination and reasonable energy resolution, making it an ideal choice for compact devices with gamma and neutron dual detection capabilities.