Reports until 16:48, Tuesday 25 November 2025
LHO General
ryan.short@LIGO.ORG - posted 16:48, Tuesday 25 November 2025 (88243)
Ops Day Shift Summary

TITLE: 11/26 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Planned Engineering
INCOMING OPERATOR: Ryan C
SHIFT SUMMARY: Maintenance day went pretty smoothly and wrapped up mid-morning. After running an alignment, locking went smoothly, but H1 lost lock after 1 minute at low noise. Relocking after that went smoothly also, but took just a bit longer. Since then, PEM measurements have been ongoing and H1 has been locked for just over 2 hours.

LOG:

Start Time System Name Location Lazer_Haz Task Time End
15:56 FAC Ken LVEA N Outlet work BSC1/2 18:09
15:56 FAC Richard LVEA N Showing Ken the outlet 16:13
15:59 FAC Eric MER N Replacing heating element 16:28
16:14 FAC Nellie EY N Technical cleaning 17:22
16:16 CDS Erik Remote N Rebooting h1susauxe{x,y} 16:17
16:20 VAC Gerardo EX N Turning on compressor 18:01
16:26 FAC Kim EX N Technical cleaning 17:53
16:28 FAC Eric Site N Running fire pumps 17:07
16:29 CDS Fil LVEA N Pulling JAC cables [HAM1/2 to SAFE] 18:59
16:30 VAC Jordan LVEA N Measurements near Y-BTM 16:40
16:47 CDS Marc LVEA N Pulling JAC cables 18:59
16:54 CDS Daniel LVEA N Pulling JAC cables 18:59
16:59 VAC Jordan EX N Compressor 18:01
17:03 CDS Jackie LVEA N Pulling JAC cables 18:59
17:34 FAC Richard LVEA N Checking on Ken 17:43
17:35 FAC Nellie FCES N Technical cleaning 18:31
18:10 FAC Richard LVEA N Taking pictures 18:22
18:13 VAC Jordan LVEA N Measurements at HAM6 septum 18:18
18:20 FAC Kim LVEA N Technical cleaning 19:24
18:31 FAC Nellie LVEA N Technical cleaning 19:16
18:46 PEM Robert, Rene, Alicia CER N Setting up magnetometers 19:46
18:55 ISC Keita, Kar Meng Opt Lab N OPO work 19:35
19:25 VAC Jordan, Gerardo EX N Shutting down compressor 19:53
20:57 ISC Kar Meng Opt Lab Local OPO work 00:03
21:21 CDS Jackie MY N Delivering parts 21:57
22:41 ISC Sheila Opt Lab Local OPO work 23:08
00:16 PEM Rene, Alicia CER N Setup measurement, huddle test 00:33
00:20 ISC Kar Meng Optics lab LOCAL OPO work Ongoing
00:21 ISC Marc Optics lab LOCAL Help with osciliscope issue Ongoing