Influencing Factors of Performance of Nuclear Radiation Imaging Detector Based on MPPC Array

doi:10.16553/j.cnki.issn1000-985x.2024.0180

Abstract

Abstract: This paper employs YSO crystal arrays and MPPC arrays to construct a nuclear radiation imaging detector, investigating the key factors influencing the performance of MPPC array-based nuclear radiation imaging detectors, including front-end resistance networks, light guide thickness, and light guide edge cutting depth. Initially, through front-end electronics experiments, it is found that using symmetric charge division circuit (SCD) can improve image distortion issues and enhance signal-to-noise ratio. Subsequently, based on SCD, the impact of different thicknesses of light guides (0, 1.0, 1.5, 2.0, 2.5 mm) on imaging performance was studied.The results show that a thickness of 1.5 mm provides the best resolution. However, the edge pixels of the crystal array still cannot be distinguished. Lastly, building upon the 1.5 mm light guide, experiments cutting the light guide periphery to varying depths and insertingelectron spin resonance (ESR) reflective film demonstrats that complete cutting through with the addition of reflective film allows for clear distinction of edge crystal units.

Key words: MPPC array, YSO crystal array, nuclear radiation imaging detector, electronics, front-end resistance network, light guide thickness, light guide edge cutting depth

CLC Number:

TL812⁺.1

TAO Zucai, WANG Qiang, XIAO Xiong, SONG Baolin, ZHANG Wenqiang, LIU Shuangquan, HUANG Xianchao, DING Yuchang, XU Yang. Influencing Factors of Performance of Nuclear Radiation Imaging Detector Based on MPPC Array[J]. Journal of Synthetic Crystals, 2025, 54(1): 40-48.

References

[1] 张钰海, 张根, 李静静, 等. 基于大科学装置的放射性新核素产生进展[J]. 同位素, 2022, 35(2): 104-113.
ZHANG Y H, ZHANG G, LI J J, et al. Progress in the production of new radioactive nuclides based on large-scale scientific facilities[J]. Journal of Isotopes, 2022, 35(2): 104-113 (in Chinese).
[2] YOKOYAMA R, SINGH M, GRZYWACZ R, et al., Segmented YSO scintillation detectors as a new β-implant detection tool for decay spectroscopy in fragmentation facilities[J]. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2019, 937: 93-97.
[3] 祁中, 郭忠言, 詹文龙, 等. 用于中能重离子反应测量的塑料闪烁探测器阵列[J]. 高能物理与核物理, 1997, 21(7): 577-582.
QI Z, GUO Z Y, ZHAN W L, et al. Plastic scintillation detector array for medium energy heavy ion reaction measurement[J]. Chinese Physics C, 1997, 21(7): 577-582 (in Chinese).
[4] 黄秋, 方方, 丁卫撑, 等. 大面积塑料闪烁探测器剂量线性测量及修正[J]. 中国测试, 2015, 41(6): 30-33.
HUANG Q, FANG F, DING W C, et al. Measurement and correction of large-area plastic scintillation detector dose linearity[J]. China Measurement & Test, 2015, 41(6): 30-33 (in Chinese).
[5] 王强, 王璐, 屈菁菁, 等. 基于单光子技术的闪烁体衰减时间常数测量[J]. 压电与声光, 2020, 42(2): 200-202.
WANG Q, WANG L, QU J J, et al. Measurement of scintillator decay time constant based on single photon technology[J]. Piezoelectrics & Acoustooptics, 2020, 42(2): 200-202 (in Chinese).
[6] LI Y Y, LI C Y, HU K. Design and development of multi-channel front end electronics based on dual-polarity charge-to-digital converter for SiPM detector applications[J]. Nuclear Science and Techniques, 2023, 34(2): 18.
[7] SIEGEL S, SILVERMAN R W, SHAO Y P, et al. Simple charge division readouts for imaging scintillator arrays using a multi-channel PMT[J]. IEEE Transactions on Nuclear Science, 1996, 43(3): 1634-1641.
[8] 刘毅. 康普顿散射成像探测器的研制[D]. 成都: 成都理工大学, 2018.
LIU Y. Development of Compton scattering imaging detector[D]. Chengdu: Chengdu University of Technology, 2018 (in Chinese).
[9] 李英帼, 黄川, 王天泉, 等. PET探测器波形积分法位置分辨性能测量[J]. 核电子学与探测技术, 2020, 40(2): 346-352.
LI Y G, HUANG C, WANG T Q, et al. Waveform integration method for measuring position resolution of PET detectors[J]. Nuclear Electronics & Detection Technology, 2020, 40(2): 346-352 (in Chinese).
[10] POPOV V, MAJEWSKI S, WEISENBERGER A G, et al. Analog readout system with charge division type output[C]//2001 IEEE Nuclear Science Symposium Conference Record. November 4-10, 2001, San Diego, CA, USA. IEEE, 2001: 1937-1940.
[11] POPOV V, MAJEWSKI S, WEISENBERGER A G. Readout electronics for multianode photomultiplier tubes with pad matrix anode layout[C]. IEEE Nuclear Science Symposium. Conference Record. October 19-25, 2003, Portland, OR, USA. IEEE, 2003: 2156-2159.
[12] 征云飞, 李兰君, 邝忠华, 等. 光导厚度对基于高分辨率LYSO和SiPM阵列PET探测器性能的影响[J]. 核技术, 2018, 41(4): 44-50.
ZHENG Y F, LI L J, KUANG Z H, et al. Effects of light guide thickness on the performance of PET detectors consisting of high-resolution LYSO and SiPM array[J]. Nuclear Techniques, 2018, 41(4): 44-50 (in Chinese).
[13] 李岩, 王强, 黄先超, 等. 大面积高灵敏度编码相机探测器的设计与性能测试[J]. 核技术, 2020, 43(5): 33-38.
LI Y, WANG Q, HUANG X C, et al. Detector design and performance test for coded camera of large area and high sensitivity[J]. Nuclear Techniques, 2020, 43(5): 33-38 (in Chinese).
[14] 蔡小杰, 黄畅, 唐彬, 等. Anger-camera型中子探测器位置分辨性能研究[J]. 核科学与工程, 2024, 44(1): 233-242.
CAI X J, HUANG C, TANG B, et al. Study on position resolution of neutron detector based on anger-camera[J]. Nuclear Science and Engineering, 2024, 44(1): 233-242 (in Chinese).
[15] LIU Z, NIU M, KUANG Z H, et al. High resolution detectors for whole-body PET scanners by using dual-ended readout[J]. EJNMMI Physics, 2022, 9(1): 29.
[16] 佟林格. 高分辨率小动物PET成像系统探测器性能测试与初步断层成像研究[D]. 兰州: 兰州大学, 2018.
TONG L G. Performance test and preliminary tomography study of detector in high resolution PET imaging system for small animals[D]. Lanzhou: Lanzhou University, 2018 (in Chinese).
[17] 尹红, 徐扬, 李德辉, 等. 小动物PET成像用LYSO闪烁晶体阵列研究[J]. 压电与声光, 2014, 36(3): 406-408+411.
YIN H, XU Y, LI D H, et al. Study on LYSO scintillation crystal array for small animal PET applications[J]. Piezoelectrics & Acoustooptics, 2014, 36(3): 406-408+411 (in Chinese).