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SUMMARY:Progress in the R&D of the ASHIPH counter based on silicon photomu
 ltipliers for the SND detector
DTSTART;VALUE=DATE-TIME:20261030T073000Z
DTEND;VALUE=DATE-TIME:20261030T074500Z
DTSTAMP;VALUE=DATE-TIME:20261030T064750Z
UID:indico-contribution-6391@cern.ch
DESCRIPTION:Speakers: Robert Efremov (Budker Institute of Nuclear Physics 
 of Siberian Branch Russian Academy of Sciences (BINP SB RAS))\nTo increase
  particle identification quality in the Spherical Neutral Detector (SND) a
 t the VEPP-2000 electron-positron collider\, we propose upgrading the ASHI
 PH (Aerogel\, SHifter\, PHotomultiplier) Cherenkov counters. With the repl
 acement of the current microchannel-plate photomultipliers (MCP-PMTs) with
  silicon photomultipliers (SiPMs)\, we expect the number of detected photo
 ns per particle to increase by a factor of 2.5.\nThe front-end electronics
  (FEE) for an array of five SiPMs were developed. The SiPM array calibrati
 on procedure and its results are presented\, and the array homogeneity is 
 estimated. The results of testing the FEE together with a thermal stabiliz
 ation system inside the SND detector are reported. An ASHIPH-SiPM counter 
 prototype was developed and investigated with a test electron beam to stud
 y the light-collection inhomogeneity across the counter. Results for both 
 aerogels (refractive indices n = 1.05 and n = 1.13) are presented. The est
 imated π/K separation quality is about 6σ.\n\nhttps://indico.particle.me
 phi.ru/event/626/contributions/6391/
LOCATION: Conference Hall 5
URL:https://indico.particle.mephi.ru/event/626/contributions/6391/
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