UMN CDMS Wiki archive
start › cdms › k100 › group_meetings › 20221222
Teleconference link: https://umn.zoom.us/j/2461438631
Domestic: 1-646-558-8656 (US toll)
Domestic: 1-408-638-0968 (US toll)
Access code: 908-227-5310
  • Lab Update - Run 76 post-mortem
    • Stripline tube repolished and replaced with new Nitrile o-rings
      • may want to close up IVC without a payload, just to do a room temperature leak check (uses up one indium seal)
    • To do:
      • bench inspection and electrical checkout of damaged SQUETs
      • electrical check of detector, looking for changes. Why did we have the new leakage problem after the HV mishap?
      • modify existing SQUETs to hopefully get a full 12 operational channels
      • try replacing burned-out tower wires (and estimate whether there will be thermal problems)
      • decide on thermometry. We looked at the fridge thermometer connector, removed some protective goop on it. Two thermometers read wrong at base recently using this connector. Could the helium films have caused the problem? We have three tower thermometers to choose from: the usual Tower thermometer, the Goldman thermometer, and a new calibrated RuOx thermometer we haven't used yet. May be difficult to connect two of them if we also want to use the source mover
      • more R&D on the 2D source mover….
  • Priority Updates
    • Yield discrimination with phonon-only detectors - Matt
  • General Updates
    • Himangshu
    • Shubham
    • Jack
    • Derek
    • Zach
    • Scott
    • Giulia
  • Fun Update