TITLE: 06/08 Owl Shift: 07:00-15:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Lock Acquisition
CURRENT ENVIRONMENT:
SEI_ENV state: CALM
Wind: 5mph Gusts, 4mph 5min avg
Primary useism: 0.01 μm/s
Secondary useism: 0.08 μm/s
QUICK SUMMARY: Just lost lock at 06:53UTC 1370242452 after 2h49 in NLN. Ryan and I watched CSOFT P ASC control signal ring up before the lockloss, plot attached. Tagging ISC.
VAC, SUS, SEI, CDS, dust monitors all Okay.
Looked over the last locklosses. In general the CSOFT_P control signal does get larger throughout the lock. In particular the last three "unknown" locklosses show CSOFF_P_OUT16 getting up to 4000 in towards the end: this one along with 20230608 0245UTC and 20230608 0653 UTC.
20230607 1635 UTC shows some CSOFT P noise but not as bad. The other locklosses in the last 3 days CSOFT_P_OUT16 stayed below ~2000.
Plot of last 3 days attached. Did something change during at the "1 day ago" 06/07 09:37UTC? This was the second lock after maintenance and I moved PR3 to get locked 70217.
