thomas.shaffer@LIGO.ORG - posted 16:32, Wednesday 10 September 2025 (86838)
Ops Day Shift End
TITLE: 09/10 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Corrective Maintenance
INCOMING OPERATOR: Ibrahim
SHIFT SUMMARY: Locked for about 10 hours when a brief power outage on site took everything down. We have been in recovery since (see list of alogs below). We are currently getting the IMC to lock after realizing that there was an issue with the whitening and Daniel logged into Beckhoff to fix it.
Power outage alogs:
- Ryan C's notes during recovery 86826
- Fil's EE 86839
- Ryan S PSL recovery 86835
- Optic slider recovery 86834
- Camilla's TCS recovery
- Jim's SEI recovery
- Dave's CDS recovery alog
LOG:
- 1907 Power outage, lock loss
Start Time System Name Location Lazer_Haz Task Time End 15:11 CEBEX Bubba, contractors MY n CEBEX building prep 23:04 15:51 FAC Christina OSB rec. n Rollup door to drip off packages 15:56 16:41 FAC Randy, Eric MY n Check on something 19:59 17:18 SYS Betsy Opt Lab n Parts 17:22 19:19 VAC Eric Ends n Getting HVAC at ends checks 20:04 19:20 VAC Gerardo LVEA n Reset Ion pumps for RGAs 19:43 19:21 VAC Jordan Ends n Reset ion pumps for RGAs 19:51 19:25 - Fil Ends n Turning on lasers and checking HV 20:25 19:36 VAC Travis LVEA n Grab a part 19:42 19:36 VAC Travis MY n Pump work 19:58 19:47 PSL Richard LVEA n PSL diode controller power cycle at PSL racks 19:58 19:48 SEI Jim Mech room n HEPI pump startup 20:04 19:59 VAC Travis LVEA n Parts 20:16 20:04 SEI Jim Ends n HEPI pump stations 21:24 20:07 CDS Erik EX n Power dolphin extender 20:34 20:35 CDS Fil EX n HEPI trouble shooting 21:10 21:25 SYS Betsy LVEA n Taking pictures of HAM2/3 21:41 21:38 VAC Travis, Janos MY n Pump work 22:22 21:40 EE Marc LVEA n Checking out fast shutter electronics 21:58