TITLE: 07/05 Eve Shift: 2300-0800 UTC (1600-0100 PST), all times posted in UTC
STATE of H1: Lock Acquisition
INCOMING OPERATOR: Ryan S
SHIFT SUMMARY: An earthquake lockloss then a PI lockloss. Currently at MAX_POWER

Lock1:

• 23:25 UTC reacquired NLN, back in Observing at 23:28 after accepting some SDF diffs for ALSX
• 01:19, 01:37, and 02:12 UTC Dropped out of observing for a few seconds due to 2 SDF diffs on syscssqz (from DIAG_SDF log), I didn't catch what the channels were.
  • It seems like its a problem with the SQZ_FIBR_TRANS (Tagging SQZ)
  • It started happening again at 04:14 UTC and I was able to catch the channels, a trend of the {FAST,COM}GAINS. I unmonitored them for now
• 02:13 UTC lockloss from another earthquake, a 2.6 from Alaska?

Lock2:

• XARM is having fiber polarization issues now, H1:ALS-X_FIBR_LOCK_FIBER_POLARIZATIONPERCENT can't get below 14 (ALS_OVERVIEW -> POLARIZATION CORRECTION BOX), Sheila suggested H1:ALS-X_FIBR_LOCK_LOGIC_FORCE which did the trick for now until the root issue can be solved
• Lost it at ALS then I didn't have the issue the 2nd try
• 05:32 UTC superevents20240405at, didn;t get a verbal callout for this
• 06:37 UTC lockloss from a PI ringup

Lock3:

• ALSX fiber error is back, toggling force on the PLL doesn't do anything now. I toggled force on the PDH as well which locked it
• GRD couldnt get the POL below 22 after a bit of trying, I took over (paused ALS_XARM) and got it to 15 somehow, I unpaused it and it was finally able to get out of CHANGE_POL / FAULT
• 07:23 DRMI lockloss at CARM_150_PICO

To recap for SQZ, I have unmonitored 3 SQZ channels on syscssqz (H1:SQZ-FIBR_SERVO_COMGAIN, H1:SQZ-FIBR_SERVO_FASTGAIN, H1:SQZ-FIBR_LOCK_TEMPERATURECONTROLS_ON) that keep dropping us out of observing for now until their root issue can be fixed (Fiber trans PD error, too much power on FIBR_TRANS?). I noticed that each time the GAINS change it also drops our cleaned range