ibrahim.abouelfettouh@LIGO.ORG - posted 16:39, Wednesday 04 June 2025 (84804)
OPS Day Shift Summary
TITLE: 06/04 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Planned Engineering
INCOMING OPERATOR: Oli
SHIFT SUMMARY:
IFO is in NLN_CAL_MEAS and PLANNED ENGINEERING
Extremely productive day in which we got to Nominal Low Noise for the first time in two months!
Very briefly, here's what we did today:
- Discovered that the HAM1 ISI watchdog was tripped for 1 full day, contributing to DRMI instabilities in the last EVE
- Violins are looking okay and being actively damped by OPS and Fellows
- REFL rephasing was done to max SNR from Q into I.
- ADS optimized via A2L
- HAM1 Leak checks are ongoiong because it has been determined that the annulus gap between HAM1 door is probably leaking. Tomorrow, vacuum will go into the LVEA and find out which door it is (if possible).
- DC Centering issues fixed
- SQZ being worked on
Relevant alogs:
alog 84800: low range coherence checks
alog 84798: a2l optimized pre-NLN
alog 84796: IM4 and MC2 TRANS
There are undoubtedly more in-progress alogs about work done today.
LOG:
| Start Time | System | Name | Location | Lazer_Haz | Task | Time End |
|---|---|---|---|---|---|---|
| 15:30 | LASER | LASER HAZARD | LVEA | LASER HAZARD | LVEA IS LASER HAZARD (\u2310\u25a0_\u25a0) | 07:26 |
| 14:39 | FAC | Herc Lift Lift | MX | N | Lifting a lift | 15:05 |
| 17:11 | FAC | Randy | MX | N | Inventory | 20:10 |
| 17:29 | VAC | Travis | MY | N | Checking storage space | 17:44 |
| 20:54 | AOS | Jeff, Jordan | Optics Lab | Local | SPI Collimator | 21:06 |
| 20:55 | VAC | Travis | MY | N | Inventory | 20:55 |