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位置敏感的光倍增器具有内在的连续电阻层,用于电荷分裂

Yang Shao, Huixia Zhang, Jiaying Zhu

|July 30, 2025

概括

新的一维连续电阻层光倍增器 (CRL SiPMs) 为闪光检测提供了更好的位置和定时分辨率. 方形环电极配置对高分辨率3D成像应用特别有希望.

科学领域:

高能物理仪器仪表高能物理仪器仪表
光子检测技术的技术
闪探测器的发展发展

背景情况:

位置敏感的光倍增器 (SiPM) 在各种科学应用中对于精确的事件定位至关重要.
连续电阻层 (CRL) SiPM 提供电荷分割功能,以提高位置灵敏度.
一维 (1D) CRL SiPM正在开发中,以提高检测系统的空间和时间分辨率.

研究的目的:

审查现有的CRL SiPM并报告1D配置的新发展.
为了比较不同1D CRL SiPM电极设计的位置和时间特性.
评估1D CRL SiPMs对于先进的闪光成像的适用性.

主要方法:

三种1D CRL SiPM配置的制造和表征:方形环 (SR) 电极 (15μm和20μm微细胞大小) 和双平行侧带 (DPSS) 电极 (10μm微细胞大小).
在特定的光电子计数下分析位置分辨率,位置测量误差和时间分辨率.
性能指标的比较,包括位置分辨率 (μm),位置误差 (μm) 和时间分辨率 (ps).

主要成果:

位置分辨率随着微细胞大小的增加而降低,而位置测量误差在很大程度上与此无关.
10μm DPSS 装置显示较大的测量误差归因于反向脉冲,而不是微细胞大小.
由于电荷传输路径较短,SR结构显示出更高的时间分辨率,平均位置分辨率从72.6±13.6μm到196.2±20.2μm不等.

结论:

带有SR电极的1D CRL SiPM为需要高3D空间和时间分辨率的闪光探测提供了出色的性能.
1D CRL SiPMs的直角配置可以减轻桶扭曲,并在成像中提供交互深度 (DOI) 信息.
对于在闪光成像中要求精确事件定位和定时的应用,SR配置是有利的.

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