ryan.crouch@LIGO.ORG - posted 16:32, Wednesday 20 November 2024 (81378)
OPS Wednesday DAY shift summary
TITLE: 11/20 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Microseism
INCOMING OPERATOR: Ryan S
SHIFT SUMMARY: We spent the day in IDLE again investigating the PSL issues, we've had only the PMC locked for most of the day. At the end of the shift, the power supply for the PLS was swapped. Microseism has slowly starting to come down in the last ~5 hours. We are going to remain DOWN again tonight.
LOG:
| Start Time | System | Name | Location | Lazer_Haz | Task | Time End |
|---|---|---|---|---|---|---|
| 21:17 | SAF | LVEA LASER SAFE | LVEA | N | LVEA IS LASER SAFE | 01:17 |
| 17:05 | PSL | Jason | CER, LVEA | N | Revive the PSL NPRO | 17:17 |
| 17:26 | FAC | Karen | Optics lab, vac prep | N | Tech clean | 18:26 |
| 17:40 | PSL | Jason, Marc | CER | N | Turn off PMC HV and unplug db37 cable | 17:46 |
| 18:41 | FAC | Christina | Mids | N | Check out storage | 20:02 |
| 18:48 | PSL | Jason | LVEA, CER | N | Take pictures | 18:51 |
| 19:03 | FAC | Kim | H2 enc | N | Tech clean | 20:17 |
| 19:13 | FAC | Karen | Woodshop, fire pump | N | Tech clean | 19:26 |
| 19:25 | VAC | Janos | MidY | N | Mech room, pump checks | 20:25 |
| 21:37 | VAC | Janos | MidX | N | Pump checks | 22:00 |
| 23:10 | PSL | Jason, RyanS | LVEA, Optics lab | N | Grab power supply and swap it | 23:43 |
| 23:56 | PSL | Fil | CER | N | Plug back in DB37 for the FSS | 00:08 |
- 15:00:26 UTC a minor frequency power glitch alog81376 earlier this morning tripped off the NPRO. The power discrepancy only lasted ~50ms.
- 17:15 UTC Jason brought the NPRO back
- 2ndary microseism seems to be decreasing, satellite images show the cyclone moving NW away from the WA coast today
- 17:55 UTC Jason and Marc turned off the PMC high voltage and unplugged the DB376 cable again to resume the test from yesterday (No IMC, FSS, or ISS, only PMC)
- I ran a spectra of the PMC_MIXER_OUT_DQ channel comparing times of similar range from the good lock we had on 11/19/24 to a lock back in 09/07/24
Images attached to this report
