Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2009, Vol. 20 ›› Issue (6): 344-348 doi: 10.13538/j.1001-8042/nst.20.344-348

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A method to measure transit time spread of photomultiplier tubes with Cherenkov light

WU Chong1 DONG Huasong2,* SUN Zhijia3   

  1. 1 Department of Mathematics and Physics, China University of Petroleum, Beijing 102249, China 2 Department of Computer Science and Technology, China University of Petroleum, Beijing 102249, China 3 Institute of High Energy Physics, the Chinese Academy of Science, Beijing 100049, China
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WU Chong, DONG Huasong, SUN Zhijia. A method to measure transit time spread of photomultiplier tubes with Cherenkov light.Nuclear Science and Techniques, 2009, 20(6): 344-348     doi: 10.13538/j.1001-8042/nst.20.344-348

Abstract:

With the technology of coincidence method, transit time spreads (TTSs) of PMTs are measured with Cherenkov light on the photocathode window of photomultiplier tube (PMT) produced by cascade ? radiation source, 60Co. TTSs with single and multi-photoelectron which are analyzed by convolution of Poisson and Gaussian are obtained. The study to XP2020 and XP2020Q PMTs shows that TTSs are consistent with data supplied by Philips. TTSs are inversely proportional to the square roots of number of photoelectrons. The method is feasible when single and multi-photoelectron can be distinguished.

Key words: Transit time spread (TTS), Cherenkov light, Photomultiplier tube (PMT), Single photoelectron (SPE), Cascade gamma radiation source