An accurate measurement of PMT TTS based on the photoelectron spectrum

The water Cherenkov detector array（WCDA） for the Large High Altitude Air Shower Observatory（LHAASO） will employ more than 3600 hemisphere 8-inch photomultiplier tubes（PMTs）. Good time performance of the PMT, especially the transit time spread（TTS）, is required for the WCDA. In order to meet the dema...

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Published inChinese physics C Vol. 39; no. 6; pp. 76 - 80
Main Author 黄卫平 唐泽波 李澄 江琨 赵晓坤 王鹏飞
Format Journal Article
LanguageEnglish
Published 01.06.2015
Subjects
Air showers
Arrays
Circuit design
Dividers
Hemispheres
Photoelectrons
Photomultiplier tubes
PMT
Transit time
TTS
光电倍增管
光电子光谱
同时测量
探测器阵列
时间扩展
精确测量
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ISSN1674-1137
0254-3052
DOI10.1088/1674-1137/39/6/066003

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Summary:The water Cherenkov detector array（WCDA） for the Large High Altitude Air Shower Observatory（LHAASO） will employ more than 3600 hemisphere 8-inch photomultiplier tubes（PMTs）. Good time performance of the PMT, especially the transit time spread（TTS）, is required for the WCDA. In order to meet the demand of the WCDA experiment, an accurate measurement of PMT TTS based on the photoelectron spectrum is studied. The method is appropriate for multi-photoelectrons and makes it possible to measure the TTS of different photoelectrons simultaneously. The TTS of different photoelectrons for a Hamamatsu R5912 PMT is tested with a specially designed divider circuit. The relationship between TTS and number of photoelectrons is also presented in this paper.
Bibliography:The water Cherenkov detector array（WCDA） for the Large High Altitude Air Shower Observatory（LHAASO） will employ more than 3600 hemisphere 8-inch photomultiplier tubes（PMTs）. Good time performance of the PMT, especially the transit time spread（TTS）, is required for the WCDA. In order to meet the demand of the WCDA experiment, an accurate measurement of PMT TTS based on the photoelectron spectrum is studied. The method is appropriate for multi-photoelectrons and makes it possible to measure the TTS of different photoelectrons simultaneously. The TTS of different photoelectrons for a Hamamatsu R5912 PMT is tested with a specially designed divider circuit. The relationship between TTS and number of photoelectrons is also presented in this paper.
11-5641/O4
photoelectron hemisphere correction specially sized summarized cathode setup searching deviation
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ISSN:1674-1137
0254-3052
DOI:10.1088/1674-1137/39/6/066003