Reports until 00:14, Saturday 30 November 2019
LHO General
patrick.thomas@LIGO.ORG - posted 00:14, Saturday 30 November 2019 (53581)
Ops Eve Shift Summary
TITLE: 11/29 Eve Shift: 00:00-08:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 117Mpc
INCOMING OPERATOR: Ed
SHIFT SUMMARY: Lost lock early on due to earthquake in Canada. Had some trouble relocking. Dropped out of observing for about 7 minutes likely due to network switch error. Currently in earthquake mode due to an earthquake in Guatemala.
LOG:

01:14 UTC Dick in electronics lab
01:48 UTC Lock loss, 4.1 magnitude earthquake in Canada
01:50 UTC Robert to end Y to replace illuminator on viewport
01:54 UTC Both arms need green alignment. No flashes at all for Y arm.
01:56 UTC Trying INCREASE_FLASHES state on X arm.
02:04 UTC Going to start aligning the Y arm by hand while INCREASE_FLASHES is running on the X arm.
02:07 UTC Got Y arm above .8. Had to move ETMY largely in pitch. Took to ETM_TMS_WFS_OFFLOADED.
02:24 UTC INCREASE_FLASHES has dropped the flashes to 0. Stopping it and aligning the X arm by hand.
02:32 UTC Got X arm above .8. Had to move both ETMX and TMSX. Took to ETM_TMS_WFS_OFFLOADED.
02:33 UTC Lock loss from LOCKING_ALS.
02:44 UTC Automatically went to ACQUIRE_PRMI.
02:45 UTC PRMI locked
02:47 UTC DRMI locked
03:12 UTC Lockloss from MAXIMUM_POWER
03:24 UTC Lockloss from CARM_OFFSET_REDUCTION
04:04 UTC Nominal low noise. There is a SDF difference H1:SUS-ETMX_M0_TEST_Y_OFFSET. This is likely left over from the INCREASE_FLASHES script that I ran and ended up canceling. I think I need to accept it for now, since changing it will probably break the lock.
04:08 UTC Observing
05:11 UTC Dropped out of observing by connection error on LASER_PWR guardian node.
05:18 UTC Back to observing
06:05 UTC "GRB-Long" verbal alarm
E356051
Fermi
Trigger ID 596786686
TRIGGER_DUR:     4.096 [sec]
Alert may be ignored
07:50 UTC Changed SEI_CONF to EARTH_QUAKE for 5.8 magnitude earthquake in Guatemala.