【摘要】 核辐射成像依赖于位置灵敏探测器，其所需的读出电子学通道数一般较多。而传统采用电阻矩阵网络对电荷进行分流的信号读出方法，虽然大幅度减少了电子学通道的数量，但能量分辨率也显著变差。本文设计了一种串联读出电路来减少读出电子学的通道数量，并保证较好的能量分辨能力。探测器选用4×4阵列排布的CsI(Tl)闪烁体，并耦合了阵列SiPM来产生电流信号。电流信号经过串联电阻网络后，在两端通过电荷灵敏前放转化为电压信号。因此，单个探头模组的串联读出电路所需的读出电子学的通道数量仅为两路，而探测器的位置则是利用两端信号幅度比进行识别。针对662 keV能量的实验结果表明，探测器的相对位置分辨率为0.54%，其测得能量分辨率可达6.51%。更多还原

【Abstract】 [Background] Nuclear radiation imaging relies on position-sensitive detectors, which generally require many channels of readout electronics. The traditional signals readout methods use a resistor-matrix network for the charge division, which significantly reduces the number of electronic channels, but the energy resolution degrades significantly. [Purpose] This study aims to design a serial readout circuit that reduces the number of electronic channels while ensuring good energy resolution. [Methods] The detector used CsI(Tl) scintillators were arranged in a 4×4 array and coupled with a SiPM array to generate current signals. After passing through a serial resistor network,the current signals were converted into the voltage signals through the charge-sensitive preamplifiers at both ends.Therefore, only two channels of readout electronics were required for single detector module, and the position of the detectors were identified using the amplitude ratio of the dual-end signals. [Results] The experimental results for 662 keV energy show that when the relative position resolution of the detector is 0.54%, the measured energy resolution can reach 6.51%. [Conclusions] The serial readout circuit presented in this study offers an innovative solution for radiation imaging by reducing the number of required electronic channels and ensuring good energy resolution, potentially leading to more efficient and cost-effective imaging systems.更多还原