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SUMMARY:Characterization of the DUNE photodetectors and study of the event
  burst phenomenon
DTSTART;VALUE=DATE-TIME:20210916T184500Z
DTEND;VALUE=DATE-TIME:20210916T190000Z
DTSTAMP;VALUE=DATE-TIME:20260306T110312Z
UID:indico-contribution-43@indico.physics.ucsd.edu
DESCRIPTION:Speakers: Tommaso Giammaria ()\nThe Deep Underground Neutrino 
 Experiment (DUNE) is an upcoming neutrino physics experiment that will ans
 wer some of the most compelling questions in particle physics and cosmolog
 y. \nThe DUNE far detectors employ silicon photomultipliers (SiPMs) to det
 ect light produced by charged particles interacting in a large liquid argo
 n time projection chamber (LArTPC).\nThe SiPMs are photosensors consisting
  of an array of single-photon avalanche diodes (SPAD) operating in Geiger 
 mode. The choice of employing solid state photodetectors stems from their 
 high sensitivity and dynamic range\, as well as the possibility to fill la
 rge surfaces with high granularity.\nAn international consortium of resear
 ch groups is currently engaged in a systematic comparison of the performan
 ces of the SiPM models that have been custom developed for DUNE by two man
 ufacturers. Such detailed studies\, which include gain measurements and a 
 structure study of the dark count rate at 77K\, are meant to determine the
  best choice of the photodetection system for DUNE\, as well as characteri
 ze the response of the chosen detectors for the DUNE simulation. Moreover\
 , an investigation of a newly observed phenomenon\, consisting in fast bur
 sts of events separated by a short time interval and collected in individu
 al SiPMs\, is being carried out\, which potentially impacts the design of 
 future models and their implementation in particle physics experiments. Th
 is poster presents the main results in terms of characterization of the Si
 PMs that will be employed in DUNE\, as well as of our studies of the novel
  bursts phenomenon.\n\nhttps://indico.physics.ucsd.edu/event/1/contributio
 ns/43/
LOCATION:
URL:https://indico.physics.ucsd.edu/event/1/contributions/43/
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