Reports until 07:45, Wednesday 03 December 2025
LHO General
corey.gray@LIGO.ORG - posted 07:45, Wednesday 03 December 2025 - last comment - 08:05, Wednesday 03 December 2025(88329)
Wed DAY Ops Transition

TITLE: 12/03 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Planned Engineering
OUTGOING OPERATOR: None
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 5mph Gusts, 3mph 3min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.27 μm/s 
QUICK SUMMARY:

H1 was IDLE overnight (had troubles getting through DRMI and a few steps beyond yesterday afternoon/eve---see Oli's log).  In the middle of an Initial Alignment.  Then we'll see about locking...

Day #2 of Crane Inspection work continues:  This morning will be work for the South Bay crane, but will also need pendant work; this should go until about noon.  (Then remaining cranes would be:  Filter Cavity End Station, Staging Bldg, and some gantry cranes.)  Yesterday, rest of LVEA cranes were inspected as well as End & Mid Stations.

(it's been almost 15min and Green Arms are almost aligned from Initial Alignment.)

Comments related to this report
corey.gray@LIGO.ORG - 08:05, Wednesday 03 December 2025 (88331)CDS

Got word there are issues for PCal at EX (after investigations by Tony & Dave last night).  

After the alignment is done, Dave is going to restart models on h1iscex & then after that they will possibly swap back in the 18-bit DAC (after the 20bit DAC was installed yesterday).