thomas.shaffer@LIGO.ORG - posted 16:07, Thursday 07 September 2023 - last comment - 16:46, Thursday 07 September 2023(72733)
Ops Day Shift Summary
TITLE: 09/07 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 141Mpc
INCOMING OPERATOR: Ibrahim
SHIFT SUMMARY: We've been locked for 5 hours after a slower lock loss and automated relock. We lost the FMCS EPICs site wide around noon during work to fix the FMCS system.
LOG:
- 1704 Lock loss
- 1809 Observing
- 2224:30 EY HVAC system restart
- 2303 Out of observing, SQZer relock
- 2306 Observing
| Start Time | System | Name | Location | Lazer_Haz | Task | Time End |
|---|---|---|---|---|---|---|
| 15:00 | FAC | Kim | MX | n | Tech clean | 16:22 |
| 17:52 | PEM | Robert | LVEA | n | Picture of magnetometer | 18:02 |
| 18:02 | PSL | Jason | MX | n | Check on container | 18:36 |
| 20:04 | FAC | Tyler, Contractor | FCES, EY | n | Check on HVAC servers | 20:58 |
| 22:04 | FAC | Fil, Contractor | MY. EY | n | Connect FMCS system | 22:36 |
| 22:21 | FAC | Richard | FCES | n | Checking on HVAC servers | 22:36 |
The OPO PZT voltage reached the threshold and the squeezer relocked. After squeezer relock, the BNS range and squeezing level were worse. We tuned the OPO temperature (attached figure) and the range and squeezing level came back.