TITLE: 12/04 Owl Shift: 08:00-16:00 UTC (00:00-08:00 PST), all times posted in UTC

STATE of H1: Observing at 72.7098Mpc

INCOMING OPERATOR: Patrick

SHIFT SUMMARY: Been locked since last night. 25 hours and counting! LLO is still down.

LOG:

10:46 Got a TCSY low flow alarm. Time series showed a quick drop of flow rate and then back to normal. I went to check the chiller on the mezzanine anyway. The flow rate read 4 pgm (normal).

14:12 Suddenly there were nasty group of lines appeared in DARM between 500-1000 Hz. Verbal alarm complained EY saturation multiple times (well, that doesn't tell us much). Lasted less than a minute (14:11:47-14:12:29).