Reports until 16:53, Tuesday 10 June 2025
H1 General
anthony.sanchez@LIGO.ORG - posted 16:53, Tuesday 10 June 2025 (84952)
Tuesday Ops Day Shift - A Lite Maintenance Day report.

TITLE: 06/10 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Commissioning
INCOMING OPERATOR: Oli
SHIFT SUMMARY:
Locking notes
Started Manual_Initial_Alignment
Touched up ALS-Y alignment.
Requested Initial_Alignment_Offloaded on the ALSX&Y Guardians.
Took Align_IFO to Input_Align_Offloaded, then to PRX_LOCKED. Maxed out PRM alignment.
Requested Mich_Bright_Offloaded and then finished the Manual_Initial_Alignment.

15:00 UTC Norco Truck heading down to EY.

TripLite Power plug is still on. Dave is turning it off. 15:55 UTC

16:00 UTC TEST T1572825
Nominal Low Noise Reached 16:15 UTC
Unknown Lockloss from NLN @ 16:18 UTC

Sat in DRMI For a while pushing around the Beam Splitter to get better flashes.

I returned the BS back to its last position when we had left the last IA.

Running the return slider values script in Print Only Mode reveals the following optics needed to move
Before: SUS-PRM_M1_OPTICALIGN_P_OFFSET: -1681.2,
After: SUS-PRM_M1_OPTICALIGN_P_OFFSET: -1679.4,

Before: SUS-PRM_M1_OPTICALIGN_Y_OFFSET: -41.9,
After: SUS-PRM_M1_OPTICALIGN_Y_OFFSET: -35.7,

Before: SUS-PR2_M1_OPTICALIGN_Y_OFFSET: -230.6,
After: SUS-PR2_M1_OPTICALIGN_Y_OFFSET: -228.9,

Before: SUS-SRM_M1_OPTICALIGN_P_OFFSET: 2544.1,
After: SUS-SRM_M1_OPTICALIGN_P_OFFSET: 2532.9,
Eventually we gave up and did another Man.Initial_Alignment. But may be I should have been moving PRM instead of BS.

While relocking there was a temperature excursion in the +Y side of the LVEA. Tyler took a look at it and was able to make the changes needed to reverse it.

15 minutes of NOMINAL_LOW_NOISE & Observing!!! 21:29 - 21:46 UTC ! 

The Squeeze is not Squoze for 15 minutes.
 

GRB-Short E572842 22:22 UTC
Three Calibration Sweeps !!!  84932  84940  84949


GRB-Short E572844 @ 23:12 UTC

Kevin K. started some ADF sweeps:
GPS time for start of one ADF sweep
1433628819
Kevin K. also started one more a bit earlier at
1433628286

LOG:

Start Time System Name Location Lazer_Haz Task Time End
15:22 FAC LVEA is LASER HAZARD LVEA YES LVEA is LASER HAZARD \u0d26\u0d4d\u0d26\u0d3f(\u239a_\u239a) 22:54
14:35 fac Eric Mech Room N working in mech room on mezanine 14:51
14:36 GAC Nelly & Kim EY & EX N Technical cleaning 16:36
14:44 FAC Randy LVEA y finding path and Moving Forklift. 14:51
15:12 VAC Gerardo & Travis LVEA HAM1 y Checking VAC Status 15:20
15:33 FAC Eric Mech Mezz N Working in mech room on mezanine 15:50
16:01 PEM Richard CER N Putting PEM wire Coil back up 16:16
16:21 FAC Randy Mid stations N Storing parts. 17:21
16:25 OPS Camilla, TJ LVEA Y Sweep the LVEA 16:52
16:48 VCA Travis CER N Getting parts 16:51
16:59 VAC Jordan LVEA Output Arm Y Shutting down pump 17:05
17:25 Tour Jeff +15 GWANW Control Room & Overpass N GWANW tour 17:26
17:26 Tour Rick + 4 ET LVEA Mech Room y Giving Tour to ET Scientists 18:26
17:44 SEI Patrick EY N Getting USB stick for BSRY 18:51
18:07 FAC Chris ALL Mids & Ends N Testing Phone functionality 18:51
18:31 FAC Tyler VAC Prep N Storing tools & parts. 18:46
18:55 Tour Rick Robert & ET EY N Giving tour to ET scientists 19:27
19:09 IMC Sheila LVEA Y Plug in SR75 into psl racks 19:23
23:07 Tour Rick, Robert +ET Roof N Heading to the roof for a good view 23:37