TITLE: 06/07 Owl Shift: 07:00-15:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Observing at 137Mpc
SHIFT SUMMARY: Locked in Observing majority of shift, IFO has been locked last 4h20. 
LOG:

Lock #1 Lockloss at 09:07UTC 1370164044 after 9h54 in NLN.

Unsure of cause, lockloss tool tagged "DCPD saturation" but there were low violins,  no PI's (checked sitemap > PI > PI Overview > ! DTT  Templates > 10.4kHz) and this wasn't a PRCL 11Hz ring up. This lockloss rang up the violins.

Relocking

Green arms locked well with good beatnotes (-4dB COMM and -8dB DIFF). PRMI didn't lock so I moved PR3 yaw from 154.6 to 154.1 (direction suggested by TJ in 70176, he moved 153.5 to 154.6 due to temperature excursion). This move it dropped COMM beatnote from -4 to -6dB but locked PRMI. Attached is the PR3 sliders and oplevs today and over the last 2 months (y-cursors at current values). All automatic apart from PR3 touch.

Had to wait in OMC_WHITENING for ~20 minutes for the violins to damp. 

Lock #2 NLN and Observing at 10:38UTC.

Attempted to speed up EY01 violin damping but neither increasing or turning off the gain worked, reverted to nominal settings, slow and steady, see attached plot.