快响应门控光电倍增管设计
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摘要
门响应时间和消光比是门控光电倍增管的两个重要性能参数。介绍了将俄制CHφT5型光电倍增管改制为门控光电倍增管的设计。采用控制光电倍增管第二聚焦极的方法,设计快响应门控制电路,使门控光电倍增管具有3个量级以上的消光比,开门延迟响应时间为70 ns,光电倍增管恢复输出的时间为20 ns。光电倍增管灵敏度降低了20%。
Gating response time and cut-off ratio are two important performance parameters of gated photomultiplier.The design of gating a CHφT5 type photomultiplier,made in Russian,was discussed in this paper.The method of controlling the second focus electrode was adopted.With a high quality and fast response gating circuit,the cut-off ratio of gated photomultiplier is larger than 10~3.After turning on the gated photomultiplier,the delay time and the rise time of photomultiplier's anode output are 70 ns and 20 ns respectively.The sensitivity of photomultiplier is decreased 20%.
Gating response time and cut-off ratio are two important performance parameters of gated photomultiplier.The design of gating a CHφT5 type photomultiplier,made in Russian,was discussed in this paper.The method of controlling the second focus electrode was adopted.With a high quality and fast response gating circuit,the cut-off ratio of gated photomultiplier is larger than 10~3.After turning on the gated photomultiplier,the delay time and the rise time of photomultiplier's anode output are 70 ns and 20 ns respectively.The sensitivity of photomultiplier is decreased 20%.
引文
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[2]郭洪生,张德,杨高照.门控光电倍增管(PMT)在α测量中的应用[J].中国工程物理研究院科技年报,2003,(1):64-64.
[3]韩和同,等.电流型门控光电倍增管时间性能实验研究[J].核电子学与探测技术,2008,28(2):394-398.
[4]Hara K,et al.γFlash suppression using a gated photomultiplier assembled with an La Br3(Ce)detector to measure fast neutron capture reactions[J].Nuclear Instruments and Methods in Physics Research Section A:Accelerators,Spectrometers,Detectors and Associated Equipment,2013,723:121-127.
[5]Kanaya Y,Akimoto H.Gating a channel photomultiplier with a fast high-voltage switch:reduction of after pulse rates in a laser-induced fluorescence instrument for measurement of atmospheric OH radical concentrations[J].Applied optics,2006,45(6):1254-1259.
[6]Filus Z,et al.Delayed fluorescence from the photosynthetic reaction center measured by electronic gating of the photomultiplier[J].Biopolymers,2004,74(1):92-95.
[7]Herman J R,et al.Normally on photomultiplier gating circuit with reduced post‐gate artifacts for use in transient luminescence measurements[J].Review of scientific instruments,1992,63(11):5454-5458.
[8]Lei X,et al.Fast photomultiplier tube gating system for underwater laser detector[C]//Xun Hou,Wei Zhao,Baoli Yao.Proc of SPIE 6279,627948.Xi'an China:International Society for Optics and Photonics,2007.
[9]Yoshida T M,Jovin T M,Barisas B G.A high‐speed photomultiplier gating circuit for luminescence measurements[J].Review of scientific instruments,1989,60(9):2924-2928.
[10]Albach G,Meyer J.A Linear Gate for Photomultiplier Signals[J].Review of Scientific Instruments,1973,44(5):615-616.
[11]胡孟春,等.微秒级宽脉冲信号下能输出大于1.5 A线性电流的光电倍增管[J].核技术,2004,27(4):313-316.
[12]胡孟春,叶文英,周殿忠.一种大电流光电倍增管在脉冲测量中的应用[C].核电子学与核探测技术学术交流会论文集,2002:134-137.
[2]郭洪生,张德,杨高照.门控光电倍增管(PMT)在α测量中的应用[J].中国工程物理研究院科技年报,2003,(1):64-64.
[3]韩和同,等.电流型门控光电倍增管时间性能实验研究[J].核电子学与探测技术,2008,28(2):394-398.
[4]Hara K,et al.γFlash suppression using a gated photomultiplier assembled with an La Br3(Ce)detector to measure fast neutron capture reactions[J].Nuclear Instruments and Methods in Physics Research Section A:Accelerators,Spectrometers,Detectors and Associated Equipment,2013,723:121-127.
[5]Kanaya Y,Akimoto H.Gating a channel photomultiplier with a fast high-voltage switch:reduction of after pulse rates in a laser-induced fluorescence instrument for measurement of atmospheric OH radical concentrations[J].Applied optics,2006,45(6):1254-1259.
[6]Filus Z,et al.Delayed fluorescence from the photosynthetic reaction center measured by electronic gating of the photomultiplier[J].Biopolymers,2004,74(1):92-95.
[7]Herman J R,et al.Normally on photomultiplier gating circuit with reduced post‐gate artifacts for use in transient luminescence measurements[J].Review of scientific instruments,1992,63(11):5454-5458.
[8]Lei X,et al.Fast photomultiplier tube gating system for underwater laser detector[C]//Xun Hou,Wei Zhao,Baoli Yao.Proc of SPIE 6279,627948.Xi'an China:International Society for Optics and Photonics,2007.
[9]Yoshida T M,Jovin T M,Barisas B G.A high‐speed photomultiplier gating circuit for luminescence measurements[J].Review of scientific instruments,1989,60(9):2924-2928.
[10]Albach G,Meyer J.A Linear Gate for Photomultiplier Signals[J].Review of Scientific Instruments,1973,44(5):615-616.
[11]胡孟春,等.微秒级宽脉冲信号下能输出大于1.5 A线性电流的光电倍增管[J].核技术,2004,27(4):313-316.
[12]胡孟春,叶文英,周殿忠.一种大电流光电倍增管在脉冲测量中的应用[C].核电子学与核探测技术学术交流会论文集,2002:134-137.