ryan.crouch@LIGO.ORG - posted 22:00, Saturday 25 January 2025 (82467)
OPS Saturday eve shift summary
TITLE: 01/26 Eve Shift: 0030-0600 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 158Mpc
INCOMING OPERATOR: Tony
SHIFT SUMMARY: The coherence checked yielded lots of CHARD_Y, MICH & SRCL. MC2 and ITMY cameras are blue from Roberts viewport work. We've been locked for ~4.5 hours.
LOG:
| Start Time | System | Name | Location | Lazer_Haz | Task | Time End |
|---|---|---|---|---|---|---|
| 17:16 | SAFETY | LASER HAZ | LVEA | YES | LVEA is Laser HAZARD | 16:35 |
| 01:11 | PEM | Robert | LVEA | Y | Viewport pictures | 01:41 |
- 01:23 UTC Observing
- I noticed that ETMY mode20 was slowly ringing up after seeing the DCPD min/max plot on NUC31 look to be slightly diverging, so I turned off the gain at 02:00 UTC. I've set its' gain to 0 in lscparams for now. I've found a setting that has been damping it well for a few hours, I changed the phase from -60 to -30 and used a gain of -1, so FM1 + FM2 + FM10, G = -1.0 (OPSinfo, SUS) the VIOLIN_DAMPING node needs to be reloaded next time we're out of observing.
I was also getting a DIAG_MAIN message about "Noisy BSC CPS on: ITMY, ST1, V2" (SEI).
Images attached to this report
