ProtoDUNE-ND Electronics and Readout

US/Central
Zoom 6308408415

Zoom 6308408415

Ting Miao (FNAL)

Sept 3 2020 ProtoDUNE-ND Electronics and Readout Integration Meeting

  • News and status of action tasks:
    • Design of light readout VGA crate has changed. Now it looks like they will fit onto top of TPC flange nicely. Sasha think this is the case.
    • Linda asked whether we need similar protection for the VFA crate like we do for  readout racks on catwalk at MINOS.  We need more info on the crate to decide.
    • Sasha to send specification of this VGA crate to DUNE docDB or email. We need to know the power requirement
    • There were some concerns whether we we have space for HV filter on top of TPC flange. Maybe we can think of moving it off the flange.
  • Rack protection and AC distribution in MINOS
    • Linda's talk is posted on indico page. Please see design detailed there.
    • We will use as much as possible equipment saved from MINOS decommissioning. The rack protection will be based on BIRA 8880. PDU and switches also recycled from MINOS
    • Rack building need input from subsystems.
      • We are starting the rack-building process, The documentations in DUNE docDB posted by subsystems will be the starting point
      • Rack-building tool example shown on page 6 of Linda's talk
      • Subsystem experts from light readout, charge readout, cryogenics instrumentation, HVS and MINERvA need to complete their documentation and put in DUNE docDB
    • The AC transformer for argonCube2x2 is about 15-20 kVA. We will go larger size than that -- probably 50kVA or more.
      • Linda to look possibility to use uBOONE spare 75kVA XFMR
  • Charge readout
    • Armin Karcher from LBNL gave an introduction of the charge readout DAQ. Detail is in his slide posted on indico page
    • All data signals from the LArPixel tiles are digital.
    • I/O to the tiles include data, clock/timing, power, Ethernet. They are expected to go through a feedthrough on top of TPC flange
    • DC power line is grounding float at suppler and terminated at the cryostat.
    • There is some concerns of noise pickup using the non-shielded DC power cables
    • We need full schematics to understand details of power distribution and equipment layout.
    • There are two options on clock distribution LBNL is looking into --  Ethernet PTP and White Rabbit receiver
      • Comment made about NUMI beam timing signal in MINOS hall
      • MINERvA is receiving beam timing from ACNET crate
      • We are starting to look options for argonCube2x2 include MINErvA modules: ACNET and SBN White Rabbi signals are two options being discussed
    • DC power suppler options are still being looked:OMRON S8VK-X and Weiner PL506
      • Suggest to have Ethernet monitoring/control option for the OMRON
      • MINOS surplus wiener is another option for 2x2 test in MINOS
    • Need to collect design documentation in DUNE docDB
      • under ArgonCube2x2 documentation group
      • Need this for integration design and also for review at Fermilab
  • Summary of action tasks
    • Sasha to send specification of this VGA crate
    • Linda to look possibility to use uBOONE spare 75kVA XFMR
    • Armin to collect charge readout documentation and post them in DUNE docDB under "ArgonCube2x2" group

Francesco to send Linda spec sheets of the DC-DC converters used in feedthrough (leftover from last action

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