TITLE: 05/21 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Lock Acquisition
CURRENT ENVIRONMENT:
SEI_ENV state: CALM
Wind: 11mph Gusts, 8mph 5min avg
Primary useism: 0.01 μm/s
Secondary useism: 0.08 μm/s
QUICK SUMMARY: H1 lost lock three times last night; one of them from an earthquake, the others I will look into. Each time H1 has been able to fully relock itself and flip the Observation bit except for this morning, where it's been stuck in LOCKING_ARMS_GREEN due to an ALS PLL beatnote problem (since fixed by Sheila) and misalignment, which I will fix now.