TITLE: 11/08 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Earthquake
OUTGOING OPERATOR: Ibrahim
CURRENT ENVIRONMENT:
SEI_ENV state: CALM
Wind: 4mph Gusts, 3mph 5min avg
Primary useism: 0.10 μm/s
Secondary useism: 0.25 μm/s
QUICK SUMMARY: A few large earthquakes have been keeping us out of lock overnight, but lock acquisition has recently started. The earth is still moving a bit so we'll see how this goes.
CDS OK, no alarms.
In the last 3 overnight locks, our SQZ quickly degraded from 4.4dB to ~3.3dB as the IFO thermalized. Plot attached. The CLF RF6 slightly increased. Sheila discusses these changes in 74059.
After the last OPO temperature change, it looks like the SQZ angle should be adjusted, see attached.
This morning when we got to NLN, I changed it form 144.66deg to 138.02 deg plot, but I expect we should retune it when the IFO is thermalized at the start of commissioning.