UMN CDMS Wiki archive
start › cdms › k100 › meetings › 20161215

Agenda

  • Operations:
    • Run 61 (HV#2) status
      • More HV data taken
        • positive bias only, up to 100V with 115V pre-bias
        • can claim that “breakdown” is greater than +100V
        • there was some pulse distortion in some channels at high biases, but it went away with SQUID zapping. Good 100V data.
      • Oscillation study at higher base temperature finished, results sent to Noah. (interesting plot)
      • Noise data with different prebiasing schemes finished, copying this to the SLAC backup for Bill
      • More coincidence data taken, DAQ upgrade work
      • Finishing the run
        • Let bath run out today, begin warmup
        • Don't know yet when the Si HV is due (it would be nice if they sent me shipping info)
    • Next run, Run 62: HV#4
      • wirebonding to access all channels won't match our HV wiring, will need to prepare rerouting boards
      • calibration still a question
        • Matt P may be able to send “bare” Am source - may be expensive to ship and/or take a while to work out
        • alternatively can dismantle a smoke detector (questionable). Some web-surfing suggests activities around 1-2 μCi, comparable to our Am sources
        • last resort is one of our Am sources, for 60 keV line, no lower energies available
    • Processing and Analysis
      • Run 60, 6“ detector, analysis
        • Geant sims
        • Measuring capacitance
      • Old items
        • need to get back to work on NSOF, should test whether resolution is improved with new filtering
        • Then work on reprocessing old data
  • Physics
    • Measuring low-energy comptons with 88Y, triggering with external detectors
    • Low-energy NR peaks from neutron capture in Ge, external trigger
  • DAQ and data pipe
    • DAQ upgrade - progress
    • Old/continuing items:
      • Data storage and backup:
        • Need to copy Run 60 data to SLAC
        • Need to clean up vuk1/vuk2 before they are retired. Need to ask Angie again when she will finish copying data
      • Autoprocessing and data organization development:
        • should work on implementing smart processing so that data with different configurations can be processed automatically
        • should add more info to database, particularly for potential outside manpower