nutsinee.kijbunchoo@LIGO.ORG - posted 01:39, Tuesday 17 November 2015 - last comment - 06:15, Tuesday 17 November 2015(23456)
Couldn't lock ALS. Doing an initial alignment.
Unable to maximize the ALS transmitted power just by touching ETMs and TMS alone. ITMs didn't move much compared to where it was after the lockloss. COMM beatnote is low (3ish) and touching PR3 didn't improve it.
Another 5.4M earthquake from Greece coming through...... Pause the initial alignment.
We also just had a wind gust at ~50 mph. EQ band seismic is on the rise. Relocking is going to be a while......
First try relocking. Lockloss at REDUCE_CARM_OFFSET (11:02:17 UTC). Wind speed ~30 mph.
Wind reaching 40 mph. Locking seems hopeless right now. Just lost lock again at CARM_ON_TR (11:08:2 UTC). Put ISC_LOCK to DOWN.
I noticed SRC_CAGE_SERVO user message tells me to "Align SR3 to offload M2 actuators". I'm not what action to take but I've attached the cage servo output below. I also noticed OMC shutter was opened while locking DRMI couple of times. Could that have intefered with DRMI locking? I don't remember the shutter being opened that early.
Tidal still high. Relocking still unsuccesful.
Wind speed decreased to ~20mph. So I tried again. Lockloss while locking PRMI. Looks like ETMX ran away.
Wind speed is back to ~30 mph.
The forecast lied to me saying the wind speed would decrease towards the morning. The wind has been 30-40 mph since 10 hours ago with no sign of decreasing. LLO has been down also because of wind. I'm calling it a night (or morning?).