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Reports until 16:31, Tuesday 10 September 2024
LHO General
ibrahim.abouelfettouh@LIGO.ORG - posted 16:31, Tuesday 10 September 2024 (80028)
OPS Day Shift Summary

TITLE: 09/10 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Preventive Maintenance
INCOMING OPERATOR: Ryan C
SHIFT SUMMARY:

IFO is in PREVENTATIVE_MAINTENANCE as of 23:06 UTC

Post-Tues Maintenance

We’re trying to get to observing but waiting on SQZ Team to finish alignment. We've reached NLN twice now.

Locking started at 19:58 UTC where after our SR3 move, we went into initial alignment in prep for full IFO locking. Initial alignment finished at 20:37 UTC. It took a while because we had to move SRM to alignment with the new SRM and SR2 positions.

We fully automatically got to NLN at 21:18 UTC but lost lock 22 minutes later (21:41 UTC) for unknown reasons. We didn’t get to observing due to SQZ commissioning work happening at that time.

Following the lockloss, we were not able to lock X-Arm ALS, losing lock twice unexpectedly, prompting yet another initial alignment. This initial alignment stalled at SRC align, which was unexpected considering we just moved SRM to proper alignment manually at this state. Ryan C paused the state and apparently that was all that was needed in order for initial alignment to re-catch, finishing the process. Onto real locking.

We lost lock unexpectedly at CHECK_IR but in relocking, were able to lock DRMI without going through PRMI or MICH. We then fully automatically got to NLN for a second time. SDF Diffs from first NLN acquisition attached.

UPDATE 16:21 UTC:

We lost lock again from NLN during SQZ alignment, convincing me that perhaps the previous LL was also SQZ related. 14 min lock. On the bright side, it seems we are reliably locking to NLN following the SR3 movement.

Other:

Planned + Completed Tuesday Maint Activities (All times UTC)

Other/Opportunistic (All times in UTC):

LOG:

Start Time System Name Location Lazer_Haz Task Time End
23:58 SAF H1 LHO YES LVEA is laser HAZARD 18:24
14:43 FAC Karen Optics, Vac Prep Labs N Technical Cleaning 15:20
15:19 FAC Karen EY N Technical Cleaning 16:37
15:20 FAC Kim EX N Technical Cleaning 16:37
15:21 IAS Jason LVEA YES Faro Movement 15:58
15:21 CDS Fil EY N PEM Chassis Change 17:42
15:32 FAC Christina Receiving/Hi-Bay N Forklift recycling 18:46
15:32 VAC Jordan, Erik LVEA YES HAM6 RGA 16:03
15:34 FAC Nellie FCES N Technical Cleaning 16:36
16:06 VAC Jordan, Erik LVEA YES HAM6 RGA: Part 2 16:25
16:21 OPS TJ LVEA YES TCS Line Inspection 16:49
16:22 CDS Marc EX N DAC Transition from read only to read&write 17:55
16:37 SUS Betsy, Travis LVEA YES LVEA Chamber Sweep 17:25
16:38 IAS Jason, Mitchell LVEA YES FARO Work 18:51
16:45 FAC Tyler LVEA, MX, MY YES, N, N Routine 3IFO Checks 18:11
17:01 FAC Karen, Kim LVEA YES Technical Cleaning 18:24
17:29 SEI Jim LVEA YES Checking HAM1/2 cleanroom 18:27
17:55 FAC Chris LVEA YES Battery Maintenace 18:16
18:01 VAC Janos, Gerardo LVEA YES Capturing Photos 18:20
18:01 CDS Marc EX N DAC Transition Ctd. 19:11
18:17 FAC Chris FCES N Snorkel-lift Battery Maintenance 20:16
22:20 FAC Chris Optics Lab N Battery Check 20:20
Images attached to this report
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