多阳极光电倍增管信号简化读出方法研究

Studies of Pad Matrix Readout Concept for Multi-anode Photomultiplier Tube

鉴于电阻矩阵法可以实现对多阳极光电倍增管H9500信号的简化读出,一系列实验用来探究由该方法搭建的探测系统的性能,如能量分辨率、能量线性及位置分辨力等。对多种放射源照射CsI晶体的测试表明:由电阻矩阵法搭建的读出系统,其各方面性能都很理想,可以为未来基于H9500光电倍增管信号读出的正电子发射断层扫描系统的研制提供信号通道数简化方法。

Since the readout concept for multi-anode photomultiplier tube with a pad matrix layout has been developed,much testing has been carried out to explore its performance,such as energy resolution,energy linearity,positioning capability.With various kinds of radioactive source irradiating on small cylindrical CsI crystal,it came out the conclusion that the novel readout board based on the pad matrix concept works well and each pixel of H9500 is clearly resolved.As long as the system performed well,it may be helpful in reducing readout channels of H9500,which could be a significant part of new generation of positron emission tomography system.