H1 drops lock 24hrs after lockloss during Travis OWL shift last night. Nothing obvious on our wall monitors (Striptools normal, SEIS BLRMS quiet).
HAM6 ISI tripped, and I forgot to untrip the WD, so I paused the ISC_LOCK at DRMI ON POP to get HAM6 ISI back to ISOLATED.
Starting my shift, one check we do is the Alarm Handlers. The Vacuum one has an alarm for the EX PT524 vacuum gauge. Chandra noted this went down on Tues (Fire Dept Glitch?) & looks like it's remained down ever since. Since other gauges look good with pressures of 1e-9Torr at EX, I'll assume we do not need to pay any mind to this alarm for the moment.
These cold cathode gauges sometimes take a while to turn back on at low pressures.
TITLE: 02/20 Owl Shift: 08:00-16:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Observing at 68Mpc
OUTGOING OPERATOR: Jeff
CURRENT ENVIRONMENT:
Wind: 5mph Gusts, 4mph 5min avg
Primary useism: 0.03 μm/s
Secondary useism: 0.29 μm/s
Nice and warm out and no fog to worry about. useism looks like it's been increasing a little over the last 6hrs.
QUICK SUMMARY:
As Jeff was handing off, saw no issues, except a 5.4 Peruvian EQ popped up (followed by a 4.9 New Zealand EQ) on USGS webpage---Terramon webpage apears to be down. Will monitor these.
Jeff mentioned an A2L would be useful to run if the opportunity arises.
Fundamental violin modes are down near 3e-19.
Have noticed that the H1 & L1 Summary Pages have been down for the last ~12hrs.
Shift Summary: A2L DTT script shows pitch elevated between 20 and 25 Hz. Will run the A2L script if LLO drops out of lock.
Mostly a smooth shift. Have been Observing for the past 22.5 hours. With the exception of A2L pitch, the interferometer has been humming along all shift. There was a GRB alert, which LLO received but LHO did not. As both sites were in observing, observed the one hour stand down. Environmental and seismic conditions remain favorable.
IFO in Observing for 18.5 hours. The A2L Pitch is well above the reference and Yaw is starting to climb as well. Will run the A2L script at the first appropriate opportunity. No other problem or concerns apparent at this time.
TITLE: 02/19 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 66Mpc
INCOMING OPERATOR: Jeff
SHIFT SUMMARY:
LOG:
Quiet shift. Robert connected remotely, that's been pretty much the only excitement.
TITLE: 02/19 Owl Shift: 08:00-16:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Observing at 69Mpc
INCOMING OPERATOR: Jim
SHIFT SUMMARY: Observing for 6.5 hours. No issues since relocking early in the shift.
LOG: See previous aLogs. I left a message with Bubba regarding the fire panel alarm.
Observing for 2.5 hours. Damped PI mode 27 early in the lock. No issues since.
At 11:34 UTC, I heard a sustained alarm tone near the door of the control room. I tracked it down to the fire system panel in the Computer User's Room. Other than the tone, I noticed that the "System Trouble" light was blinking. I'll call Bubba when it get closer to normal waking hours.
Seems to have fixed itself as it is no longer alarming.
The alarm stopped for an hour or so, but has since started again. I'll call Bubba now.
A bit of tweaking BS and PRM to get DRMI to lock, but otherwise no issues.
Cause unknown as nothing is apparent on FOMs
TCS ITMX CO2 guardian kicked us out of Observe when the TCS laser lost lock.
TITLE: 02/19 Owl Shift: 08:00-16:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Observing at 67Mpc
OUTGOING OPERATOR: Jeff
CURRENT ENVIRONMENT:
Wind: 4mph Gusts, 3mph 5min avg
Primary useism: 0.02 μm/s
Secondary useism: 0.27 μm/s
QUICK SUMMARY: Observing for 24 hours.
Shift Summary: Jim reported as he was leaving the site there were two bike riders at the LSB front door. I have the camera pulled back to watch as many building as possible. I have not seen the riders on site or leaving. Will continue to monitor for signs of mischief.
Good evening of data collection. The IFO has been locked and observing for 23.5 hours. The wind has dropped back down to no more than a Light Breeze (up to 7 mph). Seismic activity has also leveled out. No issues, other than keeping an eye on the PIs, to report.
IFO has been locked for the past 19.5 hours. The wind has calmed down bring down the microseism as well. The PIs and A2L are behaving. No problems or issues apparent at this time.
Yesterday we had a lockloss at just before 1am PST local time & tonight we had a locklos just after 1:37amPST local time. Hmmmm...