travis.sadecki@LIGO.ORG - posted 00:56, Sunday 19 February 2017 (34238)
Lockloss 8:54 UTC
Cause unknown as nothing is apparent on FOMs
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.
TITLE: 02/18 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 68Mpc
INCOMING OPERATOR: Jeff
SHIFT SUMMARY:
LOG:
Quiet shift. One PI rang up once. Nothing else of interest.
TITLE: 02/18 Owl Shift: 08:00-16:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Observing at 68Mpc
INCOMING OPERATOR: Jim
SHIFT SUMMARY: Locked in Observing for ~7.5 hrs.
LOG: No issues to report.
Observing for 3.5 hours. No issues.
No issues going to NLN after IA.
TITLE: 02/18 Owl Shift: 08:00-16:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Lock Acquisition
OUTGOING OPERATOR: Jeff
CURRENT ENVIRONMENT:
Wind: 13mph Gusts, 12mph 5min avg
Primary useism: 0.06 μm/s
Secondary useism: 0.36 μm/s
QUICK SUMMARY: Jeff finished IA before his shift ended. Currently we are past locking DRMI.
Shift Summary: Lost lock and was unable to relock. Ran initial alignment but could not get the Y-Arm green to lock. Spoke with Sheila. We ran Dither Align on the Y-Arm. I was able to get the Y-Arm green to lock after some fine adjustments of ETMY. Completed the initial alignment and started to relock. Turned over to Travis to finish relocking.
IFO locked and Observing for the past 8.75 hours. Range is currently 67.3 Mpc. PIs are behaving and the A2L signal is below the reference line. No issues or problems to report.
Environmental conditions are deteriorating somewhat with the wind gusting up above 20 MPH the microseism (X and Y) is ringing up a bit. The Seismic band is declining and now sits around 0.7Um/s. Rain is forecast for later tonight or early tomorrow.
Robert, Sheila
Similar to what was done in LLO alog 31104 Robert and I made some injections on the end reaction masses while LLO was briefly unlocked last night.
We only got a good measurement of fringing for ETMX, where we did see a shelf around 45 Hz with a 1 Hz longitudnal excitation. The RMS velocity of the top mass of the reaction chain was 46nm/s rms durrig our 1Hz excitation, and about 13 nm/sec rms without any excitation. Looking at osems on M0 and lower down the chain, it seems like we were driving the test mass at a resonance, so that lower masses were moving more. At L2 the relative motion between the main and reaction chain was several um/sec, which is 2.5 orders of magnitude larger than the normal velocity at L2, so we don't think this is a problem.
Times: 17/02/2017 1:42:44 UTC excitation on 1:45:51 quiet time
SR3 oplev sum is jumping about 1300 counts, but is only 4% of the signal.
TITLE: 02/18 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:
18:21 Jason+Betsy to Mid Y
19:46 Jason back
21:09 Robert's taking fellows to the roof
21:25 Robert back
21:29 TCSX guardian lost lock point and kicked the IFO out of Observe
21:44 TCSX guardian kicked us out of Observe again. The experts are aware of the issue.
After TCSX guardian kicked us out of observing the second time and came back with SDF differences I unmonitored three channels as they are being altered by Guardian.
In an attempt to make the IFOs more robust, figure out what is going on, and get ready for the commissioning meeting at LLO next week, I and others have been comparing the IFO response during wind and earthquakes. There is a bunch on info on the seismic log. If you want to see what we've been thinking about, please take a look at the SEI log.
In particular, 1121 is an entry about wind , and entry 1114 claims that Jim is a smart guy.
Dan has reconfigured the seismon channel_access_client process on h1hwinj2 to be managed by systemd. This will automatically restart the process if it terminates. The script currently has a race condition bug, wherein during the clean up of the H1O2 directory of data older than 5 hours, the program trips up on the oldest file being deleted (even though it is not read). Until this bug is fixed, a crashed process will now be respawned. In any event, this feature was required no matter what caused the crash.
Verified restart system works, the process died and was restarted. Operators should now be sure to check if seismon reported an earthquake prior to its arrival at LHO. The seismon medm is launched from the sitemap via the SEI pull-down in the main area, last entry is SEISMON. S, P and R wave arrival times are marked ORANGE if the arrival is more than 2 minutes in the future, YELLOW if between one and two minutes, RED if within the current minute, GREY if in the past.
oh well, that didn't last long. The restarting appears to have stopped working early this morning at Feb 18 2017 02:55:45 PST We are investigating
Starting CP3 fill. LLCV enabled. LLCV set to manual control. LLCV set to 50% open. Fill completed in 207 seconds. TC A did not register fill. LLCV set back to 15.0% open. Starting CP4 fill. LLCV enabled. LLCV set to manual control. LLCV set to 70% open. Fill completed in 1113 seconds. LLCV set back to 34.0% open.
Raised CP3 LLCV to 16% and CP4 to 36% open.
