Reports until 07:37, Friday 18 September 2026
H1 General
ryan.crouch@LIGO.ORG - posted 07:37, Friday 18 September 2026 (91955)
OPS Thursday Day shift summary

TITLE: 09/17 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Corrective Maintenance
INCOMING OPERATOR: Corey
SHIFT SUMMARY: *I forgot to click post for this last night*

The LVEA was transitioned to SAFE, the CHETA viewports were installed, EndX pump down continues, and the HAM2 CPS cables were rerouted. Commissioners spent the afternoon touching up some corner alignment then they worked on PRMI and some phasing. A few optics lab and PSL anteroom dust alarms in the late afternoon, corresponding roughly with wind increase but the wind increase 3 hours previously did not increase the dust counts.

LOG:                              

Start Time System Name Location Lazer_Haz Task Time End
15:26 OPS Betsy LVEA Y -> N Transition to laser SAFE 15:42
15:30 VAC Jordan EndX N Check on pump down 16:22
15:37 FAC Kim FCES N Tech clean 16:49
15:40 VAC Gerardo LVEA Y -> N Vent BSC7 volume XARM 16:43
15:42 ISC Betsy LVEA N Checks 15:44
15:48 CRS Jim LVEA, H2 N H2 PSL room, wrap and bag parts 18:16
15:49 EE Fil LVEA N HAM2 cps cabling, L4C chassis work 18:26
15:49 VAC Camilla LVEA N Bring out viewport parts 15:59
15:51 FAC Mitch LVEA N Checks 16:00
16:25 FAC Chris + contractor LVEA N North bay crane work 18:13
16:34 VAC Jordan, Travis EndX, High bay N Bring pumps from EndX to high bay 17:08
16:43 VAC Camilla, Gerardo LVEA N Yarm viewport swap with Gerardo 20:00
16:47 FAC Richard LVEA N Safety checks 17:37
16:47 TCS TJ LVEA N Cleaning up 17:54
17:08 VAC Jordan LVEA N Viewport swap 20:17
17:30 CAL Tony EndX N Turn on PCAL laser 17:59
17:31 VAC Travis LVEA N Check with VAC crew on viewports 18:50
17:56 FAC Kim MY N Technical cleaning 18:46
18:00 FAC Richard LVEA N Give crane documents to Travis 18:07
18:16 SEI Jim LVEA N Join Fil to finish CPS cabling 18:26
18:32 EE Fil LVEA N Remove camera used for cartridge removal, by Yarm 20:29
20:43 VAC Jordan LVEA N Start pump down for BSC8/7 volumes 22:12
20:46 CAL Tony PCAL lab LOCAL New laser inspection 22:16
20:47 TCS TJ High bay N Water access 22:09
21:06 VAC Gerardo LVEA N Join Jordan with the pump down 22:11
21:07 VAC Richard LVEA N Help VAC team with the pump down 21:31
21:17 VAC Travis LVEA N Join VAC team 22:06
22:11 TCS TJ LVEA N Put buckets under new tcs lines just in case 22:21
22:44 TCS TJ LVEA N Cover outlet hole 23:00
23:16 TCS Camilla Vac prep, Optics, and LVEA N Clean up 00:16
23:22 CRS Jim, Mitch LVEA N H2 PSL wrap and bag 00:22