Reports until 08:21, Thursday 06 July 2017
LHO General
corey.gray@LIGO.ORG - posted 08:21, Thursday 06 July 2017 (37351)
OWL Operator Summary

TITLE: 07/06 Owl Shift: 07:00-15:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: EARTHQUAKE  (recovery)
INCOMING OPERATOR: Jim
SHIFT SUMMARY:

Issue #1: IMC

A bit of a rough shift with recovery from a rare large earthquake in Montana keeping us down.  Able to untrip Watchdogs within the first 90min or so, but a large part of the night was focused on restoring the basics from the ground up.  

Getting the IMC to relock was not trivial.  The first time I finally got it to lock I steered mainly the MC2, but after chatting with Cheryl she suggested I back out the change I made to MC2 and then focus instead on the PZT mirror (and then MC1, MC2 next).  After restoring MC1-3 to their WITNESS values before the EQ, tweaked the PZT as much as I could for locking, but I then resorted to mostly using MC2 to get the IMC locked.  

NOTE:  With IMC locked, I do not see an MC Trans video spot (but AS AIR showed a 00 mode).

Issue #2:  ALS....but probably alignment

Both ALSX & Y have low REFL A power.

Issue #3:  SUSETMX Computer

Jim noticed that the ETMx had a computer issue.  He is now on the phone with Dave addressing it.

Have left the OBSERVATORY MODE in Earthquake.