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.   

   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.

   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:

•  
• 16:42 Karen into Change Room to grab some booties.
• 16:42 Joe to Xarm beam enclosure sealing
• 18:11 Lockloss
• 19:25 Jim changing blends. EX-Y Quite_90, EY-X Quite_90
• 19:50 Gerardo - To X2-8
• 19:51 Joe - Back
• 20:17 Observing
• 20:17 Gerardo back
• 20:48 Start HW inj testing
• 21:20 HW inj testing done
• 21:20 Joe to Xarm beam enclosure sealing
• 22:36 Joe back
• 22:48 Gerardo to Y2-8
• 23:23 Gerardo back

• Poor duty cycle compared to O1 so far (~36%)
  • Due mainly to RF45, ETMX ISI oscillating, and earthquakes (and of course tuesday maintenance).
• Glitches
  • Two distinct bands of omicron glitches stand out between 10 - 20 hz on the 10th from ~1:30 to 7:00 UTC. These do increase the glitch rate noticeably. I could not find any correlation with environmental channels. Hveto picks out SUS-ETMY_L1_WIT_L_DQ.
  • Glitches appear as things go south towards the end of locks on the 11th. Once as wind was gusting and another when ETMX ISI started oscillating.
  • Daily CBC
    • BBH: one trigger with new SNR over 9 for all three days. Five have 8 < newSNR < 9.
    • BNS: largest new SNR for all three days was 7.295
• Fancy new colors on summary pages!

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.

GWINC quantum noise curve is replaced with dynamically-generated shot noise curve. Radiation pressure will be included later.

The null stream spectrum shows 8×10⁻⁸ mA/rtHz shot noise, which seems to imply 17 mA of dc photocurrent on the sum, rather than the expected 20 mA.

Chris, Adam

We are going to start testing using tinj with the PCAL hardware injection filters.

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.

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.