ryan.crouch@LIGO.ORG - posted 19:32, Monday 24 November 2025 (88227)
OPS Monday EVE shift summary
TITLE: 11/25 Eve Shift: 0030-0600 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Planned Engineering
INCOMING OPERATOR: None
SHIFT SUMMARY: One lockloss with an automated relock. We are currently locked (just under an hour) and running a PEM magnetic injection that will run for ~4.5 hours (started at ~ 03:11 UTC), after which Sheila has a TCS CO2 script scheduled to run.
LOG:
| Start Time | System | Name | Location | Lazer_Haz | Task | Time End |
|---|---|---|---|---|---|---|
| 23:58 | PEM | Robert, Genevieve | EY | n | Shaking up EY | 01:03 |
| 00:11 | JAC | Jennie | JOAT | n | Putting components in | 00:32 |
| 01:03 | PEM | Robert | EndX | N | Set-up speaker | 01:32 |
- 00:59 UTC GRB-Short E619576
- 01:18 UTC lockloss
- 01:33 UTC I started an IA after The arms struggled a bit and DOF_2_P for ALS X was pulling it away. ALS_X's signal was very noisy (0.07 lines width by y cursors), DOF_2_Y ended up fixing the noisy ALS_X signal. I was prompted to find Yarm by hand but I just let it keep trying as it was pretty close and it got it on its' own.
- I was getting some TMSX saturations which I don't usually see, a look at the osems before and during GREEN_ARMS_IA. There were a few small impulses that knocked ALS_X out. There were also a lot of SRM and MC2 saturations during the last section.
- The SQZ SHG locked at a low power, 5 volts. The notification is flashing on and off, I brought it to DOWN then back to LOCKED while we were relocking and it relocked it at the same voltage.
- 02:53 UTC NLN
- 03:00 UTC I cleared some leftover PEM CS excitations
Images attached to this report
