UMN CDMS Wiki archive
start › cdms › k100 › group_meetings › 20241008
Teleconference link: https://umn.zoom.us/j/9024497080?omn=98454621599
Meeting ID: 902 449 7080
Domestic: 1-408-638-0968 (US toll)
Access code:
  • Lab Update - Run 81 ending
    • Status : Fridge is warming up.
    • Collected the mix: 700 mbar
    • 1K pot was flushed with He4 gas, and cleaned needle-valve: cleaned the tip, cleaned o-rings and re-lubricated with vacuum grease.
    • Cleaned LN2 trap: pressure in the trap was >= a bar (Pressure gauge maxed out).
    • Other possible repair plans:
      • One of the SQUID joint connection is flaky at the SQUET card.
        • It results in open sometimes so we lose one channel. Should we open up the fridge and fix it?
      • Can't operate original GHS which shows 1K pot temperature readings.
        • Re-route the thermometer line from GHS to Lakeshore?
        • We dont know the exact line in the connector. Needs to be located and hooked up to Lakeshore.
      • He cold trap?
      • Turbo pump?
  • New DAQ system:
    • Old DAQ hardware is hard to work with. No DAQ/cdmsBats support.
    • Located one RevE board in the lab (SN18 or SN8?)
    • We already have RevD to IO cable adaptor board
    • Pin/channel mapping seems to be fine on paper but needs to be checked by running the detector : Pin map
    • Can we run with HV box?
      • Documentation: Link
  • Other news: Received accelerometers from Lauren. Need help with testing.
  • Priority Updates