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ZHAO Cui-lan, QI Yu-jin, #, SHI Liang, JIN Qing, DAI Qiu-sheng. Design and Implementation of Simplified Readout Circuits for Multi anode Position sensitive Photomultiplier Tubes[J]. Nuclear Physics Review, 2010, 27(1): 63-67. DOI: 10.11804/NuclPhysRev.27.01.063
Citation: ZHAO Cui-lan, QI Yu-jin, #, SHI Liang, JIN Qing, DAI Qiu-sheng. Design and Implementation of Simplified Readout Circuits for Multi anode Position sensitive Photomultiplier Tubes[J]. Nuclear Physics Review, 2010, 27(1): 63-67. DOI: 10.11804/NuclPhysRev.27.01.063
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Design and Implementation of Simplified Readout Circuits for Multi anode Position sensitive Photomultiplier Tubes

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  • The multianode position sensitive photomultiplier tube(PSPMT) has been used for the development of highresolution γ camera module. This study is aimed to investigate the simplified readout design for the multianode flat panel PSPMT. Based on the Hamamatsu H8500 PSPMT with 64 multianodes, we designed and developed two simplified readout circuits, discretized positioning circuit(DPC) and symmetric charge division circuit(SCDC). The truncated centerofgravity(TCOG) positioning method was used to optimize the readout signal processing and then further reduce the readout channels by a resistor chain. The preliminary results show that the SCDC readout with the TCOG could significantly reduce the nonlinearity of positioning and improve the effective fieldofview of the detector by about 20% as compared to the DPC readout.
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