Reports until 16:35, Monday 08 December 2025
H1 General
ryan.crouch@LIGO.ORG - posted 16:35, Monday 08 December 2025 (88419)
OPS Monday Day shift summary

TITLE: 12/08 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Planned Engineering
INCOMING OPERATOR: None
SHIFT SUMMARY:

HAM7 was prepped then vented today and there are 4 bolts left on each door, the HAM7 HV was turned off alog88421. I changed the nuc30 DARM fom to the NO_GDS template in the launch.yaml file. Team CDS has been working their way through some of the EDC channel disconnects, the list length shrinks everytime I look at it.

We wanted to lock for health checks today but the Earth disagreed, a 7.6 from Japan rumbled in around 14:00 UTC and then a 6.7 from the same region at 22:00 UTC, and the wind started to pick up around 21:00UTC. Windy.com reports the wind will increase/remain elevated till it peaks around 10/11 PM PST | 06/07 UTC then it will should start to decrease. Ground motion and wind is still elevated as of the end of the shift.

LOG:                                                                                                                                                                                                                                          

Start Time System Name Location Lazer_Haz Task Time End
15:45 FAC Nellie LVEA N->Y->N Tech clean 18:21
16:03 FAC Kim LVEA N->Y->N Tech clean 18:21
16:14 FAC Randy LVEA N Door prep, HAM6/7 17:07
16:44 SAF Sheila LVEA N -> Y LASER HAZARD transition to HAZARD 16:53
16:53   LASER HAZARD LVEA Y LVEA IS LASER HAZARD 18:00
16:54 ISC Sheila LVEA Y SQZT7 work 17:53
17:08 CAL Tony PCAL lab Y PCAL measurement 18:28
17:13 EE Fil Mid/EndY N Power cycle electronics, timing issue 17:46
17:36 EE Marc, Daniel LVEA Y Check on racks by SQZT7 18:46
17:47 EE Fil LVEA Y Join Marc 18:13
17:55 ISC Matt Prep lab N Checks, JOT lab 18:28
18:05 VAC Travis LVEA N Prep for HAM7 vent 19:20
18:10 EE Fil LVEA n Shutting HV off for HAM7 19:10
18:17 SAF Richard LVEA N Check on FIl and Marc 18:28
18:21 VAC Gerardo LVEA N HAM7 checks 19:36
18:29 CAL Tony, Yuri FCES N   19:19
20:29 CDS Dave MidY and EndY N Plug in switch 21:16
20:46 CAL Tony PCAL lab LOCAL Grab goggles 20:48
21:48 VAC Randy LVEA N Door bolts 22:58
22:05 VAC Gerardo LVEA N HAM7 doors 23:20
22:12 VAC Jordan LVEA N HAM7 door bolts 22:38
22:16 FAC Tyler +1 MY, EY N Fire inspections 00:06
22:18 ISC Matt Prep Lab N Parts on CHETA table 22:53
22:43 VAC Travis LVEA N Join door crew 23:19
22:58   Anamaria, Rene, Alicia LVEA N Checks by PSL 23:30
23:55 CAL Tony PCAL lab LOCAL Take a quick picture 00:03
23:57 ISC Jennie Prep lab, LVEA N Gather parts Ongoing

18:32 UTC SEI_CONF back to AUTO from MAINTENANCE where it was all weekend

18:58 UTC HAM7 ISI tripped

22:03 UTC Earthquake mode as a 6.6 from Japan hit us