Reports until 16:00, Saturday 23 November 2019
LHO General
patrick.thomas@LIGO.ORG - posted 16:00, Saturday 23 November 2019 (53454)
Ops Day Shift Summary
TITLE: 11/23 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 114Mpc
INCOMING OPERATOR: Jeff
SHIFT SUMMARY: One lock loss, no obvious cause. Struggled to relock, see log below. Standing down for a GRB alert.
LOG:

16:18 UTC Someone through gate. Could not hear them very well. Suspect wind fence crew.
16:39 UTC Switched SEI_CONF to EARTH_QUAKE for 5.8 magnitude earthquake in New Zealand
18:08 UTC Switched SEI_CONF back to WINDY
21:35 UTC Lock loss. Nothing obvious.
21:50 UTC Lock loss from RESONANCE. ISI BS stage 2 tripped
21:52 UTC Reset ISI BS watchdog
SEI_BS guardian is stalled
Lock loss from ACQUIRE_DRMI_1F
SEI_BS guardian is no longer stalled
Lock loss from RESONANCE again
Lock loss from TURN_ON_BS_STAGE2
ENGAGE_DRMI_ASC: OMC is continuously saturating according to verbal alarms. It would not stop so I hit DOWN and INIT.
Lock loss from TURN_ON_BS_STAGE2
22:49 UTC Cleared history on OM1 and OM2 lock filters. This cleared their saturations.
23:21 UTC Back to observing. No SDF differences.
23:44 UTC GRB short E355384. Set INJ_TRANS to INJECT_KILL. Notified LLO.
Fermi 596245432
TRIGGER_DUR:     0.256 [sec]
Standing Down