采用多像素光子计数器的单光子探测模块设计-《集美大学学报（自然科学版）》

文章信息/Info

Author(s):: YANG Yanli1; ZHENG Xinwang1; YANG Guangsong2; (1.Chengyi University College,Jimei University,Xiamen 361021,China;2.School of Ocean Information Engineering,Jimei University,Xiamen 361021,China)

Keywords:: multi-pixel photon counter; chemiluminescence; amplification circuit; pulse stack

摘要:: 为了在化学发光仪器中替代传统的光电倍增管（PMT），克服PMT体积大、探测效率低、需要上千伏偏置电压的缺点，设计了一种多像素光子计数器（MPPC）的单光子探测模块。在对前置放大器电路进行理论分析和仿真的基础上，设计了放大电路、MPPC偏置电路和制冷电路；利用高速比较器进行脉冲信号鉴别，滤除噪声和干扰；采用软件校正的办法处理脉冲堆积，进一步提高了计数准确性。测试结果表明，该模块的变异系数、线性相关系数、重复性等指标均优于传统的PMT探测器，能有效地应用于单光子计数检测分析仪器。

Abstract:: Multi-pixel photon counter (MPPC) has the advantages of excellent photon resolution ability,low voltage operation,insensitivity to magnetic fields and high reliability.Due to disadvantage of photo multiplier tube(PMT),such as large volume,low detection efficiency and bias voltage of thousands of volts,a photon detection module using MPPC is designed to replace the traditional PMT in chemiluminescence instruments.The amplification circuit,MPPC bias power supply circuit and refrigeration circuit are designed after theoretical analysis and simulation,and the pulse signal identification is performed using a high-speed comparator to filter out noise and interference,besides,the pulse stack is processed by software correction to further improve the counting accuracy.The results show that the designed photon detection module has priority over traditional PMT detector in the coefficients of variant,linear correlation and the repeatability.It can be used in the single-photon counting detection and analysis instrument.