Reports until 16:32, Tuesday 04 November 2025
LHO General
thomas.shaffer@LIGO.ORG - posted 16:32, Tuesday 04 November 2025 (87959)
Ops Day Shift End

TITLE: 11/05 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Preventive Maintenance
INCOMING OPERATOR: Corey
SHIFT SUMMARY: Maintenance Tuesday. Relocking hasn't been very successful so far. CO2Y was having IR faulting issues (alog87952), then we had a lock loss that occurred when we got to the Close_Beam_Diverters state, which we saw last week (alog87877). Now we are having a few earthquakes rolling through as we sit in max power. We don't want to advance until the ground stop shaking a bit so we can keep high gain asc on. 
LOG:                                                                                        

Start Time System Name Location Lazer_Haz Task Time End
16:06 ISC Matt CR n IMC 60W meas. 17:01
16:07 SYS Mitchell, Randy LVEA n Mega cleanroom sock install 17:15
16:10 FAC Kim, Nellie LVEA n Tech clean 18:03
16:11 VAC Jordan, Travis, Janos EY n Purge air line install 19:59
16:12 VAC Gerardo LVEA, Mech room n Run Kobelco, pump CP1 LN2 line, test turbo pumps 20:35
16:12 CDS Betsy CER n Putting stickers on racks 16:23
16:20 FAC Tyler, Rays Site n Septic tank inspection and pumping 17:59
16:22 CDS Fil EX n Connecting fibers to prep for RFM test 17:27
16:31 PCAL Dripta, Tony PCAL lab LOCAL Check on lab 16:47
16:38 SYS Betsy LVEA n Check on sock and domes 17:14
16:44 VAC Norco CP1 n LN2 fill 18:49
16:44 FAC Chirs, pest LVEA, outbuildings n Pest control 17:49
16:49 PCAL Tony, Dripta EX YES PCAL calibration meas. 19:31
17:07 CDS Betsy CER n Removing stickers from ISCC3&4 17:16
17:17 VAC Norco CP5 MX n LN2 fill 19:14
17:31 CDS Fil LVEA n Cable pull around HAM2/3 20:05
17:34 - Richard LVEA n Checking on a few things 17:57
17:34 SUS Oli CR n PRM, SRM estimator measurements 20:08
17:40 PEM Robert, Sam LVEA n Mounting accel. 18:49
17:45 SYS Randy LVEA n Taking measurements of HAM3 and BSC2 areas 18:27
17:49 FAC Chris LVEA n FAMIS checks 18:32
17:49 PSL Jason LVEA n Walking the PSL chiller lines, FAMIS 18:01
17:57 SQZ Sheila, Matt CR n OM2 hot OMC meas. 20:08
17:59 FAC Tyler, Geotech MY n CEBEX surverying 23:24
18:03 FAC Kim EX yes Tech clean 19:17
18:04 FAC Nellie EY n Tech clean 19:20
18:05 CDS Erik EY, EX n Grabbing equipment from EY, doing RFM test at EX 19:18
18:13 CDS Marc LVEA n Helping Fil with cables at HAM2/3 20:05
18:14 IO Rahul Opt Lab LOCAL JAC testing 19:07
18:55 PEM Robert, Sam LVEA n More accelerometer moving 20:28
19:20 FAC Rana, Mike, Tour LVEA n Tour 20:12
19:41 FAC Kim FCES n Tech clean 19:42
19:51 FAC Randy XTube n Filling cracks 23:02
20:47 PCAL Tony PCAL lab LOCAL Wrapping up meas. 21:32
20:52 TCS Ryan C LVEA n Turn TCS CO2Y back on 20:53
20:58 PCAL Rene, Alicia PCAL lab LOCAL Check out lab with Tony 21:44
21:09 TCS TJ LVEA N Reset CO2Y laser 21:24
22:19 SPI Corey, Ryan S Opt Lab n Optics cleaning 23:29
23:04 PEM Robert, Sam Arms n BTE cell phone signal testing 02:04