4.7k mode has been rung up since yesterday, LLO just dropped out so I'll attempt to damp it.

TITLE: 04/23 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 64Mpc
OUTGOING OPERATOR: Travis
CURRENT ENVIRONMENT:
    Wind: 6mph Gusts, 4mph 5min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.21 μm/s
QUICK SUMMARY: 4.7k is still high, I will damp when I can.

TITLE: 04/23 Owl Shift: 07:00-15:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Observing at 64Mpc
INCOMING OPERATOR: TJ
SHIFT SUMMARY:  Lock is 29.5 hours old.  No issues overnight.
LOG:  None.

Locked for 25.5 hours.  Just waiting for a GW.

TITLE: 04/23 Owl Shift: 07:00-15:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Observing at 62Mpc
OUTGOING OPERATOR: Jeff
CURRENT ENVIRONMENT:
    Wind: 10mph Gusts, 9mph 5min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.20 μm/s
QUICK SUMMARY:  No issues handed off.  21.5 hours locked and counting.

Shift Summary: Run A2L check script. Pitch and Yaw are both under the reference. Rode through several earthquakes without difficulty.

   Good observing shift. Locked for 21.5 hours. Range has been mostly in the mid to lower 60Mpc. Environmental conditions remain favorable. No problems of note.

   Between 03:24 and 03:50 (20:24 & 20:50) rode through 1 Mag5.9 and 4 smaller additional after quakes/socks with no apparent problems. Primary microseism peaked at 0.8um/s, and is ringing down. We registered a glitch around the time on the first quake's arrival. No other adverse effects were noted. The range has improved since the first quake passed and is currently in the mid to lower 60s.     

   All is well. The IFO has been locked for 17.5 hours. The wind and microseism is calming down. Range is around 62.3Mpc. A2L is below the reference. No other issues at this time.  

   We rode through a couple of smaller earthquakes with no apparent problems. The R-Wave of 3.193um/s from a Mag 5.9 EQ near Valparaiso Chile is due to arrive around 03:23 (20:23). Will see if we ride through this one. 

   

TITLE: 04/22 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 62Mpc
INCOMING OPERATOR: Jeff
SHIFT SUMMARY: I never got the chance to damp the 4.7k mode, but besides that it has been good and locked for 13hours.

The range dropped down to ~60Mpc for a few hours but seems to be back up. the 4.7k mode is high right now, but it is not growing. I am waiting for LLO to drop before I damp it.

TITLE: 04/22 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 64Mpc
OUTGOING OPERATOR: Travis
CURRENT ENVIRONMENT:
    Wind: 19mph Gusts, 11mph 5min avg
    Primary useism: 0.07 μm/s
    Secondary useism: 0.15 μm/s
QUICK SUMMARY: Seems like a calm Saturday so far.

TITLE: 04/22 Owl Shift: 07:00-15:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Observing at 62Mpc
INCOMING OPERATOR: TJ
SHIFT SUMMARY:  One lockloss of unknown cause early in the shift.  No issues relocking or otherwise.
LOG:  See previous aLogs.

No readily apparent cause.

TITLE: 04/22 Owl Shift: 07:00-15:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Observing at 60Mpc
OUTGOING OPERATOR: Jeff
CURRENT ENVIRONMENT:
    Wind: 5mph Gusts, 3mph 5min avg
    Primary useism: 0.01 μm/s
    Secondary useism: 0.14 μm/s
QUICK SUMMARY:  No issues handed off.  Lock is 5.5 hours old.

Shift Summary: Run A2L check script. Pitch and Yaw are both under the reference. Lost lock – reason unknown; at the time the range was moving around a bit. Relocked with no problems. Accepted SDF Diff with ETMY_L2_DAMP_MODE10_GAIN and back to Observing. Had to damp PI Mode-27 and Mode-28 a couple of times.

Ran A2L check – after relock, Yaw is slightly elevated, Pitch is good.

Locked in Observing for 5.25 hours. After the earlier lockloss, the remaining shift was quiet with no apparent problems. A2L remains at or below the reference.    

   After relocking the IFO has been behaving. The environmental and seismic conditions are benign. Range has improved (now at 62.3 Mpc) and is steady. Before the lockloss the range was in the mid to upper 50s and moving around. A2L Pitch is below the reference, YAW is elevated to 0.6.