General EEEMCal Meeting Summary 5/13/22

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PARTICIPANTS: Douglas, Sasha, Carlos, Joerg, Renee, Richard, Vardan, Vladimir, Yuwei Zhu, Tanja, Hamlet, Crytur-USA,


UPDATES FROM DESY PROTOTYPE TEST RUN (Douglas)

  • TPEX: calorimeter detector will be 5x5 array
  • Main goals: streaming readout comparison, TPEX prototype 5x5 PWO, EIC EMCAL PWO and SciGlass
  • Currently doing cooling test at -10degC and -25degC - with cooling from outside
  • See spectra with similar features for PWO and SciGlass
  • SciGlass has lower resolution as expected as radiation lengths are different
  • SciGlass shows small temperature effect at lower temperatures - for PWO it is a significant effect
  • To address condenstation can use absorber
  • Discussion:
  • For Sciglass need to take into account radiation length
  • The blocks being tested at DESY are shorter radiation length than those that would be used in a detector and also shorter than the PWO crystals.
  • One therefore cannot expect to see the same performance, regardless of the state of the formulation. It is primarily a matter of shower leakage.
  • One would observe the same for PWO of shorter dimensions - indeed, these tests have been performed for PANDA and similar "not impressive" performance was found for shorter PWO blocks.
  • For the analysis, suggest comparing the measured performance of the Sciglass blocks with the expected performance for blocks of these dimensions - similar to what has been done for PWO blocks of different lengths. Agreement with the expected performance would be a quite promising result for SciGlass.
  • Streaming: have analog and digital signal in the stream


JLAB PROTOTYPE TESTS

  • Main goal of the tests: SiPM
  • plan to use 3x3 matrix PWO crystal - each crystal uses 4x4 SiPM of 10um (~76k/SiPM)
  • Crytur-USA prototype revised ongoing
  • initial tests show no overheating
  • next are cosmics tests


AANL PROTOTYPE

  • Procured 20 crystals
  • Issues with procurement from Hamamatsu - working on resolution


DISCUSSION OF DETECTOR-1 ACTIVITIES

  • No additional tasks to those already in EEEMCAL R&D plan identified in WG or PM meetings
  • For 5/19 meeting with EIC Detector-1 contacts
  • use EEEMCAL slides from recent WG meeting
  • Constraints from project


NEXT MEETING: FRIDAY 10 JUNE AT 8:00AM ET

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