edmond.merilh@LIGO.ORG - posted 08:14, Friday 25 September 2015 (21940)
Shift Summary - OWL
TITLE: Sep 25 EVE Shift 07:00-15:00UTC (00:00-08:00 PDT), all times posted in UTC
STATE Of H1: Observing
LOCK DURATION: Entire Shift
SUPPORT: none needed
INCOMING OPERATOR: Cheryl V
Activity log:
12:17 Christina checked in the CR
12:30 Mike L gave a courtesy call to check on things and remind me that LLO is haveing GraceDB issues and that we’re to keep the apprised of any alarms that may occur.
13:47 Lockloss: ETMY saturations (9 in a row) No environmental explanation
14:28 After unsuccessfully trying to lock PRMI. I decided to go ahead and do INITIAL ALIGNMENT.
14:49 Did DIAG RESET on H1PASC0 timing error
Shift Summary:
- IFO Locked ALMOST entire shift 72-76Mpc.
- Lockloss reason is unknown except for a barrage of ETMY Saturations.
- No obtrusive Seismic or wind activity. 5 ETMY glitches prior to the series of ETMY Saturations preceding the lockloss: 10:46(2), 10:52, 11:38 and 12:05.
- Initial alignment procedure ensued after unsuccessful PRMI attempt
- Left IFO re-locking for Cheryl to take over.