June 11th 2020

  • Updates
    • VMM
      • did not hear back from Sorin
      • getting started on option 2 with Jeff Wilson
      • ESD protection advised by George, Fernando double check, many small components
      • should be able to order with STAR order : 1 or 2 wafers depending on price
      • might be able to try the different cable
  • APV
    • testing stability off SSP setup, issue every million events, testing up to 12 MPDs, could test more when we connect more. Test at 500 Hz right now,
      test trigger rates later
    • Danning will have access starting June 24th, Xinzhan taking over the activity
*FADC VXS readout : check evio format next week ( will be developped later for VETROC and other JLAB boards ), some CODA3 development to be integrated
  • first step generating correct data format ( firmware developement )
  • will need some time for data connection with event builder
  • same architecture planned for streaming readout in future
  • 10 gigE link on VTP better than 10 gigE on CPU ( no VME bus access )
*Discussion Moller DAQ and SoLID
  • Integrating DAQ : 2 modes - integrating or diagnostic ( read all samples )
  • Counting DAQ ( 10% of time ) for Q2 measurement : similar to SoLID DAQ at smaller scale ( FADC, VETROC, VTP )
  • Counting rates for Moller : 10 KHz minimum - scintillator trigger -
  • for CD1 review : need preliminary design, cost estimates ( Jan 2021 - Final Jan 2023 )
  • need to decide GEM readout - most likely either ok - seem to expect low rates in GEM
  • Issue for FADC procurement ? New revision of FADC being worked - so not an issue using old or new design - Moller could use the new design
    ( order FADC early 2023 )