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Description
The optical modules will be used for the outer water Cherenkov detector of Hyper-Kamiokande. This solution increases light collection in the detector's volume. The aim of the study is to create an optical module made of a wavelength-shifting (WLS) plate (an acrylic plate with a wavelength-shifting dopant) and a photomultiplier tube (PMT) that meets the requirements for usage in water Cherenkov detectors.
Preliminary results of the characteristics of the PMT for usage as an element of a module with a WLS plate are presented, and the optimal design of the plate is developed. The choice of WLS dopants and their concentrations, as well as types of reflectors, is based on the tests performed. An assessment of the wavelength-shifting plates’ aging properties was also done.
