In-situ characterization of the Hamamatsu R5912-HQE photomultiplier tubes used in the DEAP-3600 experiment
PA Amaudruz, M Batygov, B Beltran, CE Bina… - Nuclear Instruments and …, 2019 - Elsevier
Nuclear Instruments and Methods in Physics Research Section A: Accelerators …, 2019•Elsevier
Abstract 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 …
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 …
Abstract
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.
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