corey.gray@LIGO.ORG - posted 07:46, Tuesday 31 March 2026 - last comment - 08:07, Tuesday 31 March 2026(89711)
Tues DAY Ops Transition
TITLE: 03/31 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Planned Engineering
OUTGOING OPERATOR: None
CURRENT ENVIRONMENT:
SEI_ENV state: MAINTENANCE
Wind: 2mph Gusts, 1mph 3min avg
Primary useism: 0.02 μm/s
Secondary useism: 0.11 μm/s
QUICK SUMMARY:
From the alog, it sounds like HAM1 checks will continue; when this is done the move will be venting the corner and prepping for opening HAM2+3 (and dome next week...but no need to get ahead of ourselves); also when HAM1 work is done, hard close GV2 (x-arm). SQZ work also continues.
Chilly sub-32degF out. LVEA door says "laser safe", but from Ibrahim's emails yesterday & alog activity, it is the LVEA is in LASER HAZARD BIFURCATED at HAM1.
Cleaning Top Of HAM3 Deferred This Morning
kim/nellie/randy noticed that HAM3 was UNLOCKED, so they did NOT clean of HAM3. LVEA is also "bifurcated safe", which would require goggles and that's not safe when climbing on top of chambers when it's hard to see with goggles on. So top-of-HAM3 cleaning will need to wait (gave betsy a heads up on this).