thomas.shaffer@LIGO.ORG - posted 15:49, Friday 07 November 2025 (88006)
Ops Day Shift End
TITLE: 11/07 Day Shift: 1530-0000 UTC (0730-1600 PST), all times posted in UTC
STATE of H1: Lock Acquisition
INCOMING OPERATOR: Tony
SHIFT SUMMARY: Recovery from the Mexico earthquake this morning was fairly fast, but it left rung up violin modes that took hours to damp to the point that we could go to low noise. Once in low noise we managed to Observe for over an hour before we lost lock from what seem to be an ETMX/DARM glitch. We ran an initial alignment and now we are powering up. The 0.3-1Hz seismic blrm is starting to come down, so that's a good thing.
LOG:
- 2106 Observing
| Start Time | System | Name | Location | Lazer_Haz | Task | Time End |
|---|---|---|---|---|---|---|
| 15:59 | FAC | Nellie | Optics Lab | N | Technical cleaning | 16:17 |
| 16:00 | FAC | SUS | MY, EY | N | Caulking on Y-arm | 19:46 |
| 17:33 | ISS | Keita, Rahul | Optics Lab | N | Inventory - Keita out at 10:49 | 19:33 |
| 21:16 | PCAL | Tony | PCAL Lab | n | Setup meas. | 21:17 |
| 21:40 | - | Corey | Opt Lab | n | Optics cleaning | 23:15 |
| 21:54 | ISC | Kar Meng | Opt Lab | n | Looking for parts | 21:55 |
| 21:55 | IO | Rahul | Opt Lab | n | Also cleaning optics | 22:41 |