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SUMMARY:Development of wavelength-shifting plate light collector for   Out
 er Detector  of  Hyper-Kamiokande
DTSTART;VALUE=DATE-TIME:20230905T102000Z
DTEND;VALUE=DATE-TIME:20230905T104000Z
DTSTAMP;VALUE=DATE-TIME:20260811T112029Z
UID:indico-contribution-2814@indico.tlabs.ac.za
DESCRIPTION:Speakers: Alexander Izmaylov (INR\, Moscow)\, Yury Kudenko ()\
 nHyper-Kamiokande (HK) is a next generation underground water Cherenkov de
 tector to be built in Japan for  neutrino oscillation studies\, proton dec
 ay searches\, and neutrino astrophysics. An Outer Detector (OD)  will prov
 ide  information to identify interactions originating from particles outsi
 de the inner detector of HK and to veto background events.  The baseline c
 onfiguration of OD includes a few thousand photosensitive units. Each unit
  consists of a 3-inch PMT with a wavelength shifting (WLS) plate mounted a
 round it to collect Cherenkov light\, reemit it  and concentrate  on the P
 MT. The plates doped with different fluors  were tested  in air and water 
 using a set of UV LED light sources with different wavelengths. The photon
  detection efficiency of wavelength shifting fluors\, side reflectors\,  o
 ptical coupling between a  PMT and a plate were studied. Presented results
  include comparative performance of  WLS plates\, absolute photodetection 
 efficiencies\, parameters of attenuation and light collection efficiency\,
  optimization of chemical composition of WLS dopants.\n\nhttps://indico.tl
 abs.ac.za/event/112/contributions/2814/
LOCATION: Meeting Room 2.41 - 2.43
URL:https://indico.tlabs.ac.za/event/112/contributions/2814/
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