Literally everyone (to name who I know/can recall would be unfair)
TITLE: 09/16 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: IDLE
INCOMING OPERATOR: NONE
SHIFT SUMMARY:
IFO is in IDLE and DOWN for CORRECTIVE MAINTENANCE buuuuut IFO was OBSERVING for ~1 hr.
Lockloss was intentional in order to avoid potential harmful lockloses and issues throughout the night. We actually got to NLN and OBSERVING though!
It's not exactly over yet - because we have only been locked for 2 hours. Problems may be there and dormant. Nevertheless, we got here from a outrageous outage recovery and a nasty ISC/Lock reacquisition that took 5 days to get back into observing.
The main things:
- we don't know our glitch rate yet and omicron is being slow/not showing anything. It's having trouble as confirmed by Jenne and DetChar.
- ARM_TRANS is different despite same power output, meaning likely losses elsewhere - this is why we're going IDLE for the night
- X: 1716.84(then) to 1655.87 (now) - Dif = -60.97 % change: 3.7% more pre-outage|| Y: 1530.75 (then) to 1472.84 (now) - Dif = -57.91, % change: 4% more pre-outage
How we got to NLN:
Alog 86951 summarizes the lock acquisition. We just sat there for a bit at OMC_WHITENING as violins fell (and continued to)
After NLN:
- Mass acceptance of 127 SDFs (all attached, all accepted)
- IMC REFL still stable 3 hrs into MAX POWER
- Broadband PCAL run at 2hrs 2hrs 55 mins thermalized (alog 86955)
- I killed the lock via the IMC SERVO sign switch
LOG:
None
Just want to add some notes about a few of these SDFs
In this alog I accepted the TCS SIM and OAF jitter SDFs incorrectly. The safe restore had restored old values and I mixed up the "set point" and "epics value" columns here (a mistake I have made before and will likely make again). I should have reverted these values last week instead of accepting them.
Luckily, I was able to look back at Matt's TCS sim changes and I have the script that set the jitter cleaning coeffs, so I was able to reset the values and sdf them in safe. Now they are correctly SDFed in observe as well.