In-situ characterization of the Hamamatsu R5912-HQE photomultiplier tubes used in the DEAP-3600 experiment
In-situ characterization of the Hamamatsu R5912-HQE photomultiplier tubes used in the DEAP-3600 experiment
复制标题
DOI：
10.1016/j.nima.2018.12.058
复制
发表时间：
2019-04-01
影响因子：
1.4
通讯作者：
Zielinski, J.
中科院分区：
文献类型：
--
作者：
Amaudruz, P-A;Batygov, M.;Zielinski, J.
滨松R5912-HQE光电倍增管是一种新型的高量子效率光电倍增管。它目前用于DEAP-3600暗物质探测器，对未来需要高信号产额的暗物质和中微子实验具有重要意义。我们报告了为DEAP的255 R5912-HQE PMT的现场表征和监测而开发的方法。这包括对典型测量的单光电子电荷分布、相关噪声(后脉冲)、暗噪声、双脉冲和延迟脉冲特性的详细讨论。在探测器调试阶段，使用通过光扩散球注入的激光，以及在正常探测器操作期间，使用通过光纤注入的LED光来执行表征。
The Hamamatsu R5912-HQE photomultiplier-tube (PMT) is a novel high-quantum efficiency PMT. It is currently used in the DEAP-3600 dark matter detector and is of significant interest for future dark matter and neutrino experiments where high signal yields are needed.We report on the methods developed for in-situ characterization and monitoring of DEAP's 255 R5912-HQE PMTS. This includes a detailed discussion of typical measured single-photoelectron charge distributions, correlated noise (afterpulsing), dark noise, double, and late pulsing characteristics. The characterization is performed during the detector commissioning phase using laser light injected through a light diffusing sphere and during normal detector operation using LED light injected through optical fibres.