TITLE: 03/31 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Lock Acquisition
OUTGOING OPERATOR: Ryan S
CURRENT ENVIRONMENT:
SEI_ENV state: CALM
Wind: 28mph Gusts, 23mph 3min avg
Primary useism: 0.06 μm/s
Secondary useism: 0.21 μm/s
QUICK SUMMARY:
IFO is LOCKING in LASER_NOISE_SUPPRESSION
Today we have planned comissioning from 8:30 to 11:30 local time.
The last lockloss seems to have been caused by wind and elevated microseism, though neither seem high enough to have necessarily caused a lockloss.
Ibrahim, Oli, Camilla
We had two 30+ minute range drops last night, plot attached. Looks to be mainly under 60Hz from the OMC BLRMs, plot.
Doesn't appear to be sqz, EX ground motion 83233, or CO2 ISS channel 82728 related. Oli also checked this wasn't PI related 82944.
Confirmed not the PIs for either range drop (drop1, drop2). There was a small drop in range a few minutes before the second range drop around the same time as PI31 had a small ringup, but zooming in, the ringup happened multiple minutes before and so doesn't account for that quick drop either(ndscope3).