jeffrey.bartlett@LIGO.ORG - posted 08:41, Friday 13 September 2019 (51930)
Ops Owl Shift Summary
Ops Shift Log: 09/13/2019, Owl Shift 07:00 – 15:00 (00:00 - 08:00) Time - UTC (PT)
State of H1: relocking
Intent Bit: Locking
Support: N/A
Incoming Operator: Jim
Shift Summary: IFO lost lock after about 31 hours. Had a bit of trouble relocking, summarized below
12:12 (05:12) Lockloss – Unknown
This was after 31 hours of lock. The lock seem lately to be braking around 30 hour mark
Had to do a lot of work to get ALS-Y Green to lock.
12:42 (05:12) Start DARM_1F
12:52 (05:52) Drop to ACQUIRE_PRMI
PRMI not locking
13:05 (06:05) Start Initial Alignment
13:25 (06:25) Finish Initial Alignment
13:26 (06:26) Try locking again
13:31 (06:31) Back to DRMI_1F
13:41 (06:41) Drop to ACQUIRE_PRMI
Getting IMC WFS NOT CENTERED messages
13:57 (06:57) Lockloss – while researching how to fix IMC WFS
14:02 (07:02) Back to DRMI_1F
14:12 Drop to ACQUIRE_PRMI
Bump PRM in pitch and yaw, put back to starting point and then PRMI locked
14:25 (07:25) Back to DRMI_1F
14:34 (07:34) Run CHECK_MITCH_FRINGES
Tweak the BS – DRMI_1F locked
Running up through rest of the locking sequence
14:53 (07:53) Lockloss
OMC saturating. Tried clearing histories, but lost lock before could take action
14:54 (07:54) Start relocking
Activity Log: Time - UTC (PT)
07:00 (00:00) Take over from Niko
12:12 (05:12) Lockloss – Unknown
12:13 (05:13) Start relocking (see shift summary for details)
14:33 (07:33) Switch the EARTHQUAKE mode for incoming EQ from the Mid-Atlantic Ridge
14:54 (07:54) Switch back to WINDY
15:00 (08:00) Turn over to Jim