TITLE: 11/17 Owl Shift: 08:00-16:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Lock Acquisition
INCOMING OPERATOR: TJ
SHIFT SUMMARY: Relocking as my shift started. Made it to NLN with no issues.
LOG:
8:32 Changed phase of PI mode 28 damping from -250 to 250.
8:36 Changed phase of PI mode 27 damping from 150 to 120.
8:45 Observing.
8:46 Accepted SDF diffs in MC2, PR2, ETMx, and ETMy Observe files per Betsy's request. See screenshots of diffs prior to acceptance.
8:50 Out of Observing to run a2l.
8:55 Observing.
9:50 GRB alert.
11:07 Out of Observing to run measurement for Sheila.
11:37 Lockloss. Didn't abort Sheila's measurement soon enough. Saved as /ligo/svncommon/lscSVN/iscmodeling/trunk/ALIGOH1/ASC_loops/Measurements/CHARD/2016_11_17_CHARD_P_OLG_SS_50W_low_noise.xml.
12:08 Changed phase of PI mode 28 damping from 250 to -250.
12:13 Changed phase of PI mode 27 damping from 120 to 90.
12:32 Observing.
13:17 Out of Observing to attempt to tweak SRM since the range seems to be diving. Didn't seem to help much (or I didn't go far enough, but didn't want to get too risky).
13:29 Ran a2l.
13:34 Realized I didn't turn off SRC1_P (according to latest instructions, this is what you are supposed to do) while tweaking SRM. Turned off SRC1_P, tweaked SRM to no avail, and turned back on SRC1_P. Turning on SRC1_P caused lockloss. Guess I won't do that again.
13:43 Noticed that during ALS locking, the green Xarm power has come up to above 1 again. Haven't seen that in a while. Curious. See screenshot for proof.
14:25 Observing.
15:15 GRB alert.