Another one of those locklosses with no signs of a struggle. Wind has picked up to gusts of 20mph, but not near anything that should kick us out.
I will look at lockloss plots once I get the NDS1 going again.
Around the time of the lockloss, NDS1 went down. I will focus on relocking first (since NDS0 is still good) and then call to get NDS1 back up.
h1nds1 looks like it just froze up, last log entry was a keep-alive message at 17:07 PST. TJ says H1 had lost lock before this time, so it looks like a coincidence.
TJ power cycled h1nds1, and after a file system check it came back with no problems.
TITLE: 01/30 Eve Shift: 00:00-08:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 70Mpc
OUTGOING OPERATOR: Travis
CURRENT ENVIRONMENT:
Wind: 13mph Gusts, 11mph 5min avg
Primary useism: 0.02 μm/s
Secondary useism: 0.36 μm/s
QUICK SUMMARY: Travis's one lockloss he didn't even have to run an initial alignment. The IFO also rode through a pretty impressive earthquake ~8 hours ago.
TITLE: 01/29 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 70Mpc
INCOMING OPERATOR: TJ
SHIFT SUMMARY: Other than the lockloss from 20:41-21:11 UTC, have been locked in Observing the entire shift. No issues.
LOG: See previous alogs.
No issues with relocking.
Another mystery lockloss, nothing apparent on FOMs.
TITLE: 01/29 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 66Mpc
OUTGOING OPERATOR: Jeff
CURRENT ENVIRONMENT:
Wind: 8mph Gusts, 6mph 5min avg
Primary useism: 0.16 μm/s
Secondary useism: 0.38 μm/s
QUICK SUMMARY: Riding through an EQ that showed up just before my arrival. No issues yet.
Shift Summary: Ran the A2L DTT script a few times during the shift. The Pitch signal is a bit elevated.
Lockloss after 19.5 hours.
After relocked, ran A2L script to reduce Pitch signal. Damped the PI Mode 27. ETMY 4735 Hz violin mode was ringing up after relocking. SDF showed the FM9 filter was turned on. It had been turned off during the lock. I reverted the SDF to turn off the FM9 filter and reset the intent bit to Observing. The 4735 Hz violin mode has settled back down.
Lockloss after 25 minutes. Relocked the IFO without difficulty. Reverted the same FM9 filter to calm down the 4735 Hz violin mode. Damped the PI Mode 27.
Mag 5.8 EQ near Ragul Island N.Z. – IFO did not drop lock. Second wave coming on about 30 minutes after first. Primary microseism peaking at 1.0um/s, saw drop in BNS range.
Activity Log: Time - UTC (PT)
5.8 Mag Ragul Island New Zaeland
Second wave came on about 30 minutes after first, which moved the primary microseism to 1.0su/m. Saw drop in BNS range.
IFO is locked in Observing mode, as it has for the past 18 hours. The PIs and Violin mode at 4735 Hz are OK. The A2L Pitch between 5 and 350 Hz is elevated. Will run the A2L script if LLO drops out of lock. No other problems or issues thus far.
Ops Shift Transition: 01/29/2017, Owl Shift 08:00 – 16:00 (00:00 - 08:00) - UTC (PT)
TITLE: 01/29 Eve Shift: 00:00-08:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 66Mpc for 14hrs
INCOMING OPERATOR: Jeff
SHIFT SUMMARY: Nothing to report, locked the entire time and no PIs, 4.7k, etc.
Still purring away at 66Mpc for 10hours.
TITLE: 01/28 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 67Mpc
INCOMING OPERATOR: TJ
SHIFT SUMMARY: Observing for 6+ hours after lockloss early in the shift. Some 'standard' 4735 Hz violin mode damping. No other issues.
LOG: See previous alogs.
TITLE: 01/29 Eve Shift: 00:00-08:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 68Mpc
OUTGOING OPERATOR: Travis
CURRENT ENVIRONMENT:
Wind: 4mph Gusts, 3mph 5min avg
Primary useism: 0.05 μm/s
Secondary useism: 0.50 μm/s
QUICK SUMMARY: Locked at 68Mpc for 6hours. No issues handed off from Travis.
5.7M Hihifo, Tonga
Was it reported by Terramon, USGS, SEISMON? Yes, Yes, No
Magnitude (according to Terramon, USGS, SEISMON): 5.7, 5.7, NA
Location: 109km NE of Hihifo, Tonga; LAT: -15.3, LON: -173.0
Starting time of event (ie. when BLRMS started to increase on DMT on the wall): 23:15 UTC
Lock status? Maintained lock throughout, though I noticed the ASC loops working harder than usual.
EQ reported by Terramon BEFORE it actually arrived? No, I noticed the ASC loops working hard before I noticed it on the BLRMS or Terramon.
To damp 4735 Hz violin mode. Back to Observing 20:32 UTC.
Out of Observing again 20:50-20:53 UTC to damp 4735 Hz violin mode. The previous time I turned off FM9, waited for it to damp then turned FM9 back on. The mode started to ring up again. This time I turned FM9 off, saw that it was damping, and accepted the FM9 SDF diff (screenshot). FM9 is currently OFF.
Observing for the past 2.5 hours. No issues.
Back to Observing at 01:45 UTC.
I accepted the FM9 filter difference on ETMY L2 DAMP MODE 10 for the 4.7K.