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Reports until 16:30, Tuesday 13 October 2026
LHO General
thomas.shaffer@LIGO.ORG - posted 16:30, Tuesday 13 October 2026 (92297)
Ops Day Shift End

TITLE: 10/13 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Commissioning
INCOMING OPERATOR: Ryan S
SHIFT SUMMARY: Maintenance day activities were limited, with EX PCAL measurement, EX HEPI VFD electrical work, and some HAM2/3 blend testing being the main tasks. Initial alignment has been easierthan yesterday with ALSY DOF3 P only causing trouble for the first alignment. I first turned off this filter and let the other dofs converge, then I turned on DOF3 P with a gain of -1.0 rather than the usual -2.5. This seemed to work and it converged less than 5 minutes later. The second initial alignment after that I didn't have to touch anything for ALS. Relocking has been straight forward, only having to touch up SRM P in DRMI since SRCL P is still out of order.
LOG:

Start Time System Name Location Lazer_Haz Task Time End
15:12 FAC Chris Outbuildings - Safety items and checks 17:55
15:29 PCAL Tony, Caroline PCAL lab yes Prep for meas 15:58
15:32 VAC Norco MY n CP3 LN2 fill 19:03
15:33 FAC Kim EX n Tech clean 16:18
15:58 PCAL Tony, Caroline EX YES PCAL meas 18:15
16:10 CDS Fil EX YES HEPI power load reactor install 18:13
16:36 SEI/SPI Jim, Jennie Office n HAM2/3 blend testing with SPI 18:30
16:50 FAC Kim EY n Tech clean 18:07
16:58 EPO Ibrahim, Maggie LVEA Yes B roll in and around the beir garten 17:48
17:10 VAC Jordan LVEA Yes Parts collection and clean up 17:37
17:37 TCS Camilla, Miriam Opt lab, LVEA Yes Moving CHETA equiptment from opt lab to LVEA 18:08
17:40 CDS Richard EX Yes Checking in with Fil 18:30
17:56 FAC Chris LVEA Yes More safety checks 18:35
18:08 FAC Kim LVEA Yes Tech clean 18:52
18:16 PCAL Tony, Caroline PCAL Lab yes Post end station measurement meas. 18:31
18:41 VAC Gerardo, Jordan LVEA Yes Taking quick cable measurement 19:01
19:50 - Fellows Xarm n Afternoon stroll 20:30
20:27 TCS Camilla, Sophie, Miriam LVEA Yes Setting up laser curtains around CHETA Y (Miriam in at 2209) 23:28
21:47 PCAL Tony, Caroline PCAL lab Yes Another post measurement meas 22:04
22:32 ISC Sheila LVEA Yes Pushing button 22:38
23:16 VAC Gerardo, Jordan FCES n Check for parts 00:16
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