TITLE: 04/07 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Lock Acquisition
OUTGOING OPERATOR: TJ
CURRENT ENVIRONMENT:
Wind: 21mph Gusts, 15mph 5min avg
Primary useism: 0.04 μm/s
Secondary useism: 0.61 μm/s
Looks like there was a bit of a wind storm starting at about 5am PDT (13:00utc) with a few minutes of steady winds of 45-50mph 30min before the H1 lockloss.
QUICK SUMMARY:
- 13:30utc (6:30am) PI Mode 27 briefly rung up
- 13:31-13:44 PI Mode 19 begins ringing up and alarming
- 13:53 LOCKLOSS
- TJ had a misaligned ALSx in yaw.
- ~14:39 Talked to William P at LLO to let them know I'm on site.
- ~14:40 Saw a misaligned X-arm, so I tweaked ETMx, Green Arms could then lock, and then I tweaked the BS & PRM during a PRMI lock, and we were on our way to....
- 15:08 NOMINAL LOW NOISE, with the CSOFT Pit gain at 0.2 (instead of nominal 0.4 noted by Jim/Sheila last night)---so, this gain was walked to 0.4 by hand.
- 15:12 Rejoining L1 in OBSERVING (so, out of OBSERVING for ~80min)