The study of linearity and detection efficiency for 20″photomultiplier tube  

作　　者：Anbo Yang Zhimin Wang Zhonghua Qin Fengjiao Luo Yuekun Heng Haiqiong Zhang Meihang Xu Qun Ou Yang 

机构地区：[1]Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China [2]State Key Laboratory of Particle Detection and Electronics,Beijing 100049,China [3]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Radiation Detection Technology and Methods》2019年第2期15-21,共7页辐射探测技术与方法（英文）

基　　金：the Strategic Priority Research Program of the Chinese Academy of Sciences,Grant No.XDA10011100.

摘　　要：Background The linearity and photon detection efficiency(PDE)are important parameters of photomultiplier tube(PMT),which need to be precisely measured with suitable techniques.Purpose To search good methods for linearity and PDE study of newly developed 20-inch PMT.Methods In this paper,we setup a testing system to use the average photoelectrons(P.E.)in pulse mode for linearity measurement with the result corrected for strong light.For the PDE measurement,we developed a relative method with a reference PMT whose efficiency is known to compare the measured PDE with both average charge and hit numbers.Results The measurements of PMT shows only 5%nonlinearity within 1000 P.E.and good PDE,the result of linearity’s corrected definition is closer to the real status of PMT.Conclusions The results show good charge and linearity response for newly developed 20-inch MCP PMT and dynode PMT.The testing techniques discussed in this paper are suitable for the study of PDE and linearity.

关 键 词：PMT LINEARITY PDE Charge spectra P.E. 

分 类 号：O17[理学—数学]