Evaluation of large area photomultipliers for use in a new Baksan Large Neutrino Telescope project

Discussion timeslot (ZOOM-Meeting): 13. July 2021 - 18:00
ZOOM-Meeting URL: https://desy.zoom.us/j/91999581729
ZOOM-Meeting ID: 91999581729
ZOOM-Meeting Passcode: ICRC2021
Corresponding Session: https://icrc2021-venue.desy.de/channel/33-Photodetection-in-Cherenkov-Detectors-NU/80
Live-Stream URL: https://icrc2021-venue.desy.de/livestream/Discussion-05/6

Abstract:
'The Baksan Large Neutrino Telescope is a liquid scintillation neutrino detector with a target mass of 10 kt, which is supposed to be constructed at the Baksan Neutrino Observatory of the Russian Academy of Sciences at a depth of 4700 m.w.e. In addition to the main full-scale detector, this project includes prototypes with target masses of 0.5, 5 and 100 t. This article evaluates 10-inch photomultipliers (PMTs) Hamamatsu R7081-100 WA-S70 that are used in the first two phases of the project as the main ones. Also, this article evaluates 8-inch PMTs Hamamatsu R5912-100 WA-S70 used for the muon veto system for the 5-t detector prototype. For PMTs evaluation, the quantum efficiency, single photoelectron response, timing characteristics, anode dark count rate, linearity and long afterpulses were measured.'

Authors: Nikita Ushakov
Co-Authors: Almaz Fazliakhmetov | Vladimir Gavrin | Tatyana Ibragimova | Bayarto Lubsandorzhiev | Arslan Lukanov | Alexander Shikhin | Andrei Sidorenkov | Dmitry Voronin
Indico-ID: 1303
Proceeding URL: https://pos.sissa.it/395/1101