An accurate measurement of PMT TTS based on the photoelectron spectrum

作     者：黄卫平 唐泽波 李澄 江琨 赵晓坤 王鹏飞 

作者机构：State Key Laboratory of Particle Detection and ElectronicsDepartment of Modern PhysicsUniversity of Science and Technology of China 

出 版 物：《Chinese Physics C》 (中国物理C（英文版）)

年 卷 期：2015年第39卷第6期

页      面：76-80页

核心收录：

学科分类：070207[理学-光学] 07[理学] 08[工学] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：Supported by Natural Science Foundation of China(11275196) "Strategic Priority Program"of the Chinese Academy of Sciences(XDA03010100) 

主　　题：photoelectron hemisphere correction specially sized summarized cathode setup searching deviation 

摘      要：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.