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SUMMARY:Results of testing the optical module for the Cherenkov water dete
 ctor
DTSTART;VALUE=DATE-TIME:20201009T093000Z
DTEND;VALUE=DATE-TIME:20201009T094500Z
DTSTAMP;VALUE=DATE-TIME:20260309T205457Z
UID:indico-contribution-2287@cern.ch
DESCRIPTION:Speakers: Semyon Khokhlov (National Research Nuclear Universit
 y MEPhI)\, Victor Kindin (National Research Nuclear University MEPhI (Mosc
 ow Engineering Physics Institute))\, Zarina Izhbulyakova (National Researc
 h Nuclear University MEPhI (Moscow Engineering Physics Institute))\nIn rec
 ent years\, many scientific groups working with Cherenkov water neutrino t
 elescopes (IceCube\, KM3NeT) began the development of new generation of op
 tical modules (OM). As a rule\, these are modules based on a large number 
 of PMTs in quasispherical configuration which allows getting the response 
 practically independent on Cherenkov light direction. In this regard\, it 
 becomes necessary to develop new methods for testing of optical modules in
  an environment as close as possible to the working conditions inside the 
 neutrino telescopes. \n    For the calibration of OMs\, usually LED or las
 er sources with fixed wavelengths are used. They cannot imitate the contin
 uous spectrum and the directionality of the Cherenkov radiation sufficient
 ly well. Therefore the calibration of these OMs in a Cherenkov water detec
 tor is advantageous. NEVOD is presently worldwide the only setup which mee
 ts these requirements.\n    The possibility to calibrate new optical modul
 es mDOM of the IceCube-Upgrade neutrino telescope inside the tank of the C
 herenkov water detector NEVOD is discussed. Methods to calibrate optical m
 odules are presented. Methods have been tested with quasispherical optical
  module QSM-6\, in which FEU-200 PMTs were replaced by Hamamatsu R877 phot
 omultipliers. The spatial lattice of the  NEVOD detector and calibration t
 elescope system and coordinate-tracking detector DECOR deployed outside of
  the water tank allow calibrating the response of OM to the Cherenkov ligh
 t from muons\, muon bundles and cascades with known trajectories.\n\nhttps
 ://indico.particle.mephi.ru/event/35/contributions/2287/
LOCATION:Zoom Facilities
URL:https://indico.particle.mephi.ru/event/35/contributions/2287/
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