VEGAS Team Meeting

GB-137-hub
192.33.117.12##7144
434-817-6443# (telephone)

Attendees: Mark, Ray, Adam, Joe, Sam, Paul, Marty, Jason, John, Richard, Randy, Anish

Agenda:

  1. Status of “Spikes” in all modes
  2. Update on OGP calibration measurements
  3. Potential integration time inconsistencies when mapping
  4. VEGAS Q1FY15 effort requests
  5. DIBAS status update
  6. Test Time

Meeting notes:

  1. Status of “Spikes” in all modes
    • Trying to understand the variation is tests (described in email thread)
    • MMCM calibrations do not seem to be a suspect
    • Team believes the UCB suggested additional tests are being undertaken by UCB-lead team
    • Actual scientific effect of the spikes is suspect
    • Ask Joe about his tests
    • Fix build environment (NRAO & UCB)
  2. Update on OGP calibration measurements
    • Circulated gain vs temperature plots from last weeks changes - seems that calibration is not changing due to temperature
    • OGP over time changes are not huge, but there is a longer term change (weeks)
    • Starting to measure amplitude vs. frequency and will circulate results
  3. Potential integration time inconsistencies when mapping
    • Results are as expected, but the delta between requested and actual integration times is a concern
    • Use GPU time stamps as they have higher time resolution - should close the delta
  4. VEGAS Q1FY15 effort requests
  5. DIBAS status update
  6. Test Time
    • Tuesday
      • 8:00 Calibrations runs [Marganian & Ray]
    • Friday
  7. Other

-- MartyBloss - 2014-09-15
Topic revision: r1 - 2014-09-15, MartyBloss
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