Title: 11/13 Day Shift: 16:00-00:00UTC (08:00-16:00PDT), all times posted in UTC
State of H1: Down due to high microseism and high wind
Outgoing Operator: Cheryl
Quick Summary: Microseism is at 1um/s, winds gusts up to 40mph
A large group of middle school students participated in a field trip at LHO on the morning of 11/12. Arrival time at LSB = 9:00 AM. Departure time = 11:30 AM. Group size = ~100 middle school students; ~10 adults. Vehicles at the LSB = ~3 school buses. The group was in the control room near 11:15 AM.
Title: Owl Shift 08:00-16:00UTC (00:00-08:00PT)
State of H1: can lock arms in green, cannot go any further
Shift Summary: H1 has been unlocked all night due to high winds and useism.
Currently: No hope of locking even the X arm in IR (I tried, it's not yet possible because of the ground motion)
- useism is around 0.7
- winds are 0-30mph
- guardian state left on Locking Arms Green
With no hope of locking, Richard gave me to ok to head out a bit early.
Patrick is watching the Control Room/phones.
Three plots attached
Plot 1: ETMY ISI right before lock loss. Clear to see motion increasing, and Z positoin rings ups about 45 seconds before lockloss.
Plot 2: ETMY ISI after lock loss. The ringing in the CPS_X sensor
- at 7:14UTC ISO RX output sees something and the signal grows to 4x it's previous size - red oval
- at 8:10UTC CPS X Location Mon rings up, Jeff and I disable FM8 Boost3, signal quiets around 8:55UTC
- later, with no locking, I disable and enable again to measure a power spectrum (X and Y)
Plot 3: power spectrum comparing ISO X in
--- 2:49UTC (ref6 ,7) - baseline
--- 7:50UTC (ref8, 9) - ISO RX has run up a bit, but ISO X isn't yet
--- 8:45UTC (ref10, 11) - Boost3 turned off on ISO X
--- 10:27UTC (ref22, 23) - as a test I turned off ISO Y Boost3, and yes, it's noticable (bottom plot)
--- 12:22UTC (ref24, 25) - current state, Boost3 filters have been back on since around 11UTC, winds are between 15mph and 40mph, useism is around 0.8 (slightly better than 1.5 hours ago)
Title: Owl Shift 08:00UTC-16:00UTC (midnight to 08:00AM PT)
State of H1: unlocked for 6+ hours due to useism and wind.
Details:
- max wind speed this shift 60mph
- windspeed sitewide about 2 hours ago across all wind stations was between 18mph and 45mph
Currently:
--- useism is around 0.9 and apears to be rising in the last hour
--- wind is between 5mph and 40mph across the site
--- winds at EY have just spiked to 45mph as I wrote this
Activity Log: All Times in UTC (PT) 00:00 (16:00) Take over from TJ 01:50 (17:50) Jeff – Add 250ml water to TCS-Y chiller. TCS-X OK 06:03 (22:03) Lockloss – Environmental, high winds and microseism. 07:15 (23:15) Put IFO into DOWN to wait for conditions to improve 08:00 (00:00) Turn over to Cheryl End of Shift Summary: Title: 11/12/2015, Evening Shift 00:00 – 08:00 (16:00 – 00:00) All times in UTC (PT) Support: Jim W., Nutsinee, Incoming Operator: Cheryl Shift Summary: Lockloss at 06:03 (22:02) – Probably due to high winds (in the high 20s to mid 30s with gusts over 40mph) and increasing microseism (centered at 0.8um/s with high at plus 1.0um/s). Attempting to relock. The wind has dropped a bit, but microseism is increasing. Switched the ETM-X Y and ETM-Y X dof from Quite90 to 45mHz to see if this will help with locking. ETM ISI CPSs are not rung up. Relocking seldom making it past LOCKING_ALS and ETM-X ISI CPS starting to ring up. Put the IFO into a DOWN state and reset the ETM X & Y blends back to original settings. ETM-X ISI CPS has settled back down to a normal state. When wind and microseism calm down will work on relocking.
I added BP filters to:
H1:SUS-ITMX_L2_DAMP_MODE6_BL
H1:SUS-ITMX_L2_DAMP_MODE7_BL
H1:SUS-ITMX_L2_DAMP_MODE8_BL
H1:SUS-ITMX_L2_DAMP_MODE9_BL
H1:SUS-ITMY_L2_DAMP_MODE6_BL
H1:SUS-ITMY_L2_DAMP_MODE7_BL
H1:SUS-ITMY_L2_DAMP_MODE8_BL
H1:SUS-ITMY_L2_DAMP_MODE9_BL
H1:SUS-ETMY_L2_DAMP_MODE5_BL (broad BP)
The filters have been switched on and will be used in monitoring the violin mode second harmonics. I accepted all the changes in OAF SDF.
The space in ETMX violin RMS monitor has run out. If some of the filters are yours and you aren't currently using it please let me know if you could spare one so I can at least make a broad band filter for the ETMX second harmonics.
Lockloss at 06:03 (22:02) – Probably due to high winds (in the high 20s to mid 30s with gusts over 40mph) and increasing microseism (centered at 0.8um/s with high at plus 1.0um/s). Attempting to relock. The wind has dropped a bit, but microseism is increasing. Switched the ETM-X Y and ETM-Y X dof from Quite90 to 45mHz to see if this will help with locking. ETM ISI CPSs are not rung up.
The wind has come back up and microseism has risen to be centered at 1.0um/s. Could rarely move past LOCKING_ALS and never past DRMI_1F. The ETM-X ST1 CPS had also started to ring up. Put the IFO into DOWN to wait for conditions to improve. I returned the ETM-X and ETM-Y blends back to Jim's Odd Blends, and the ETM-X ST1 CPS quickly returned to a quite state. Will leave these set as they are.
IFO has been in Observing for the past 7.5 hours. Range is around 75Mpc. Environmental conditions have been generally deteriorating for the first half of the shift. Seismic is running between 0.1 and 0.2 um/s, microseism is centered around 0.6, with peaks of +1.0 um/s. Wind is up between 10 - 25mph, with several gusts over 30mph. There have been 4 ETM-Y saturations. The ETMs ISI CPS are normal.
Calibration parameter updates that includes data until Nov 11.
Kappa_tst is slowly trending up after the bias sign flip on Oct 16 and rest of the paremeters show normal variations that we have seen in the past.
The first plot contains all the parameters that we calculate.
The second plot highlights kappa_tst, kappa_C and cavity pole of which the kappa_tst and kappa_C will be applied to h(t).
This data is filtered for locked state using GDS state vector and thus contains some outliers at times when the IFO is locked but not in anlaysis ready state. In future, we plan to use GDS state vector which will give us the flexibility to only use analysis ready data.
Correction: Data is filtered using guardian State vector not GDS.
Attached plot includes calibration parameters from Nov 12- Nov 30. This time the data has been filtered using GDS state vector and includes the data that has first four bit of GDS vector as 1. Detailed definition of the GDS state vector can be found here.
The output mat file from this calculation is located at the svn location below:
Add 250ml water to the TCS-Y chiller. The TCS-X chiller water level has not changed.
Adam, Chris We scheduled coherent hardware injections using the updated tinj that uses PINJX_TRANSIENT_EXC to inject signals. Previous aLog H1 entries are aLog 23346 and aLog 23352. There was one injection performed at H1 and L1. The end time of the injection is 1131397646.4185 and the gracedb event is: H200134 (has links to waveform file and parameters) For this successful injection the intent bit at LLO turned off when awgstream was envoked but at LHO the intent bit remained on. Adam updated DIAG_EXC to exclude l1calex from knocking the interferometer out of observing mode if there is an excitation. Two other injections were canceled because of this problem. The canceled injections used the same waveform and had end times of: 1131398726.42 1131399806.42 After DIAG_EXC was updated Adam and I tried another injection. The end time was: 1131405166.42 We cancelled the injection because we had a gracedb alert. awgstream had already been called when we were alerted. So the last injection at 1131405166.42 was cancelled by stopping run_tinj with the monit web interface and then killing the awgstream process that was running under the hinj account. I restarted run_tinj after the awgstream process was killed.
Title: 11/12/2015, Evening Shift 00:00 – 08:00 (16:00 – 00:00) All times in UTC (PT) State of H1: 00:00 (16:00), IFO locked at NOMINAL_LOW_NOISE, 22.2w, 75Mpc. Outgoing Operator: TJ Quick Summary: IFO has been in Observing mode for 4 hours. Seismic activity is hovering around 0.1 um/s. Microseism is centered around 0.45 um/s, with a slight upward slope over the last 2 hours. Wind is a gentle to fresh breeze (8 – 24 mph). There is a strong storm system moving in from the northern Pacific, so weather conditions are predicted to deteriorate during the evening.
TITLE: 11/12 DAY Shift: 16:00-00:00UTC (08:00-16:00 PDT), all times posted in UTC"
STATE Of H1: Observing at 79Mpc for 3+ hours
SUPPORT: Keita, Jim W
SHIFT SUMMARY: Had one lockloss with similar symptoms like yesterday, the EX ISI began to have drastic movement and eventually a lockloss. Jim W and I changed the blends and for one degree of freedom on each end to the Quite_90s. It has been working so far...
INCOMING OPERATOR: Jeff B
ACTIVITY LOG:
Adam, Chris Adam has corrected the intent bit issue at LLO (see previous alog entry). We are going to schedule 1 hardware injection as a test. The following is added to the schedule: 1131405159 1 1.0 coherentbbh0_1126259455_ This is the last scheduled hardware injection for tonight. Will summarize all activities later.
I killed run_tinj and awgstream as the injection was scheduled.
Observing at 79Mpc.
Winds began to pick up a bit during alignment, but has since dropped back down to 20mph or below. Jim W wanted to change the blends for the end stations in the direction of the winds to the Quite_90s. So we did and seems to have worked well so far.
We have changed the blends for ETMX Y and ETMY X to the Quite_90 from the 45mHz.
We are hoping that this addresses the 40mhz ring up that ETMX sees when winds are moderate (~20-30 mph) and useism is higher (.5 micron or more) and we have to used 45mhz blends in the beam direction (i.e. X for ETMX, Y for ETMY). So far we have only tried this on the end stations, we may want to do this on the corner station BSC's as well, I don't know.
I switched ETMY at 19:25 UTC, ETMX at 19:27 UTC.
Attached is a plot of the time series of EX stage 1 motion from last lockloss. The oscillation shows up mostly in X.
Kyle, Gerardo Today we closed the 10" gate valve at BT port X2-8, vented the port-side, removed the existing hardware and coupled the new ion pump and hardware to it. We then pumped out the new volume with the leak detector and helium leak tested the new joints. This unit is part of the overall ETM charge mitigation efforts taking place at both sites. A similar unit was installed at BT port Y2-8 a few months ago. Both of these units still need to be baked-out and tested before being available for use. We plan on doing so over the next few weeks.
BT ion pump photos.
