A Measurement of Transit Time Spread of Photomultiplier Tube with Cherenkov Light

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WU Chong, SUN Zhi-Jia, HENG Yue-Kun, ZHAO Xiao-Jian, WU Jin-Jie, SHI Feng, XUE Sheng-Tian, ZHAO Yu-Da, ZHAO Li, JIANG Lin-Li and WANG Feng-Mei. A Measurement of Transit Time Spread of Photomultiplier Tube with Cherenkov Light[J]. Chinese Physics C, 2005, 29(9): 896-899.
WU Chong, SUN Zhi-Jia, HENG Yue-Kun, ZHAO Xiao-Jian, WU Jin-Jie, SHI Feng, XUE Sheng-Tian, ZHAO Yu-Da, ZHAO Li, JIANG Lin-Li and WANG Feng-Mei. A Measurement of Transit Time Spread of Photomultiplier Tube with Cherenkov Light[J]. Chinese Physics C, 2005, 29(9): 896-899. shu
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Received: 2005-03-14
Revised: 1900-01-01
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A Measurement of Transit Time Spread of Photomultiplier Tube with Cherenkov Light

    Corresponding author: WU Chong,
  • Institute of High Energy Physics, The Chinese Academy of Sciences, Beijing 100049, China2 Nanjing University, Nanjing 210039, China3 University of Science and Technology of China, Hefei 230036, China4 Zhengzhou University, Zhengzhou 450052, China

Abstract: Using coincidence method, transit time spread (TTS) is measured with Cherenkov light produced by cascade γ radioactive source, 60Co on photocathode window of photomultiplier tube (PMT). Transit time distributions with single and multi-photon electrons are fitted to Poisson convoluted with Gaussian, and TTS are obtained. The study to XP2020 and XP2020Q PMTs shows that TTS is consistent with data supplied by Philips. TTS is inversely proportional to the square root of number of photoelectrons. The method is feasible when single and multi-photon electrons can be distinguished.

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