Title: 10/09/2015, Evening Shift 23:00 – 07:00 (16:00 – 00:00) All times in UTC (PT) State of H1: At 23:00 (16:00) Locked at NOMINAL_LOW_NOISE, 22.4W, 65Mpc Outgoing Operator: Ed Quick Summary: Wind is up around 15 to 20mph, seismic activity is up. At the shift change, we were under a GRB hold. Intent Bit is set to Observing.
TITLE: Oct 9 DAY Shift 15:00-23:00UTC (08:00-04:00 PDT), all times posted in UTC
STATE Of H1: Observing
LOCK DURATION:
SUPPORT: Mike L., Sheila, Robert
INCOMING OPERATOR: Jeff B.
Activity log:
18:24 Kyle and Gerardo are going out to MY to turn on pumps they’re using for leak checking. This activity was cleared with Mike L. They are to aLog the pump start time as accurately as they can.
18:40 Pumps at MY turned on
18:50 Kyle and Gerardo back to Corner station
20:14 Kyle and Gerardo driving back out to MY
21:00 Joe B called on TS to let us know that Livingston would be coming out of Scence mode fo commissioning work
21:05 Mike Landry called to give the green light on any testing anyone would like to do as Livingston has dropped out of Science Mode
21:14 Richard out to the roof to assist Robert in PEM work
21:30 Richard leaving the roof
21:43 IFO in to commissioning mode
21:42 Robert and Mitchell outside to do PEM injections
22:30 IFO back to Observing
22:39 Loud thump from Fil closing up the CR floor.
22:40 GAMMA RAY BURST alarm
Shift Summary: Landry gave the green light for Richard to connect antenna cables on the roof while in observing mode. Came out of Science mode to do some PEM testing while LLO was out doing some commissioning . Went back into Science mode coincidentally with Livingston at 22:30UTC. Winds had increased to near 40mph for a short while and are now back down to around 15mph. Microseism increased to .5 microns while EQ seismic holds at 2.3 microns. IFO locked at 4.6 Mpc. Gamma Ray burst @ 22:40UTC has us in “Standown” mode for the next hour.
22:30UTC
On Tuesday, while most of the IFO was down for various maintenance tasks, I grabbed a bunch of SUS spectra and started a Template directory.
I set all of the references to be the ~quiet, unlocked data from the down period of the IFO. These spectra could be run when trying to troubleshoot locking. On Tuesday, I was only able to collect the following, located in /ligo/home/ops/Templates/SUS_Spectra/
BS_NOISEMON_spectra.xml
BS_OSEMINF_spectra.xml
PR2_NOISEMON_spectra.xml
PR2_OSEMINF_spectra.xml
PRM_NOISEMON_spectra.xml
PRM_OSEMINF_spectra.xm
SR3_NOISEMON_spectra.xml
SR3_OSEMINF_spectra.xml
SR2_NOISEMON_spectra.xml
SR2_OSEMINF_spectra.xml
SRM_NOISEMON_spectra.xml
SRM_OSEMINF_spectra.xml
ITMX_NOISEMON_spectra.xml
ITMX_OSEMINF_spectra.xml
ITMY_NOISEMON_spectra.xml
ITMY_OSEMINF_spectra.xml
NOTE - Many of the lower stage NOISEMON channels look... weird. They should be used as a before/.after snapshot for troubleshooting only. Work to improve what the various strangenesses of these channels is on a few low priority to-do lists.
There are templates ready to collect the balance of the SUS spectra data, namely ETMs, MCs, PR3. We should do this when the IFO is set to DOWN for whatever reason. The spectra are quick to run, then update all references (currently bogus data) and resave.
While we were unlocked due to wind during my Sunday Owl shift, I managed to get through taking, updating, and resaving templates for:
ETMX_NOISEMON_spectra.xml
ETMX_OSEMINF_spectra.xml
ETMY_NOISEMON_spectra.xml
ETMY_OSEMINF_spectra.xml
PR3_NOISEMON_spectra.xml
PR3_OSEMINF_spectra.xml
21:44UTC
This was ok'd by Mike Landry. He's assisting Robert Schofield with PEM work.
FYI, I have suspended reporting of HWInjReport runs until I can fix the bug that is causing the anomalous absence of RAW and RDS injections. Once I have that fixed, I will perform a comprehensive run of HWInjReport starting from September 12, 2015 00:00:00 UTC.
Apologies for not giving notice sooner.
We remain in Science mode locked at 72Mpc. Activities are being filtered through Mike Landry via telephone. Kyle and Gerardo have gone to Mid Y to start vacuum pumps for leak hunting. Wind has increased to ≤25mph. Earthquake graph up to .23microns/s. Terramon reported an R-Wave velocity of .25µm from a 5.1 nea New Zealand and then a 5.2 near Chile. This is most likely the reason for the rise. Microseism is up to about .5microns/s. 2.5 hours - glitch free.
The LHO Advanced Ligo CDS web page (https://lhocds.ligo-wa.caltech.edu) has been modified to include screen shots from selected control room wall displays. Not all displays are included at this time, this is only a preliminary page. The update rate is once per minute. Click on the link "Control Room Screen Shots" to view.
TITLE: Oct 9 DAY Shift 15:00-23:00UTC (08:00-04:00 PDT), all times posted in UTC
STATE Of H1: Observing
OUTGOING OPERATOR: Travis
QUICK SUMMARY:IFO in Observation mode ~75 Mpc. All lights in LVEA, PSL and M/E stations are off. Wind is ≤10mph with occassional highr gusts. EQ sei plot is nominal. Microseism plot is elevated to ~.35microns/s. Cheryl had the first 2 hours of my shift as planned.
O1 days 18-21
model restarts logged for Thu 08/Oct/2015
2015_10_08 09:29 h1nds1
2015_10_08 12:37 h1asc
2015_10_08 12:47 h1broadcast0
2015_10_08 12:47 h1dc0
2015_10_08 12:47 h1nds0
2015_10_08 12:47 h1nds1
2015_10_08 12:47 h1tw0
2015_10_08 12:47 h1tw1
One unexpected restart of nds1. ASC restart for new model code, with associated DAQ restart.
model restarts logged for Wed 07/Oct/2015
No Restarts Reported.
model restarts logged for Tue 06/Oct/2015
No Restarts Reported
model restarts logged for Mon 05/Oct/2015
Many unexpected restarts of h1tw0 due to raid issues. No other restarts. Due to large size, full report in attached file.
HAM4 and HAM5 have had strong glitches for the past several weeks (sorry if I missed this being reported already, I didn't turn it up in a search, we found these by accident). They are sometimes completely not there, but sometimes happening as fast as twice per second! Attached are a slew of plots taken roughly every two days for H1:ISI-HAM4_BLND_GS13RZ_IN1_DQ (but I also see the same in H1:ISI-HAM5_BLND_GS13RZ_IN1_DQ).
We don't have a good lead on these, but wanted to report. They look an awful lot like what we have seen before when the HWS camera was on, see e.g., 18531. I noticed a note in the log on August 25 "15:54 Elli – Going to Hartman table at HAM4", and I also noticed that the glitches started showing up after a long hiaitus around August 27th. However, if I have my sign correct (0=off) for the camera switch channels, then the HWS cameras in the central station are currently off in O1 running.
Assuming it's not HWS, we should probably check ISI actuators for DAC glitches or overflows.
I can confirm that the corner station HWS cameras are all turned off. So 0=off is correct. And If I'm reading the spectrograms correctly the glitch rate seems to change from day to day. HWS camera doesn't do that.
Title: 10/9 Owl Shift 7:00-15:00 UTC (0:00-8:00 PST). All times in UTC.
State of H1: Observing
Shift Summary: Locked for the entire shift in Observing. Wind and seismic calm. Several ETMy saturations, none of which correspond to any RF45 glitching (since there was none that I saw).
Incoming operator: TJ
Activity log: None to speak of. Very quiet night.
Locked in Observing Mode for the duration of the shift so far. A few ETMy saturations, but none of them seemed to coincide with any RF45 glitching, as that has been stable.
TITLE: "10/08 [EVE Shift]: 23:00-07:00UTC (16:00-00:00 PDT), all times posted in UTC"
STATE Of H1: Observing at ~80 Mpc for the past 6 hours
SUPPORT: Jenne, Sheila
SHIFT SUMMARY: Few problems when we began to acquire lock. Smooth ride afterward. Wind speed dropped below 10 mph. No big earthquake. Only one ETMY saturation since we acquired lock. RF45 wan't acting up when the verbal alarm went off.
INCOMING OPERATOR: Travis
ACTIVITY LOG:
23:41 LLO delayed observing for another hour. We take sometimes to do some commissioning work.
0:44 Robert to LVEA to turn off stuff. No injection.
00:38 Locked at NOMINAL LOW NOISE
00:55 Cleared off ASCIMC excitation. Switched to Observing.
05:05 GRB Alert
The new rooftop camera is amazing. I can actually see things at night!
We set all quadrant gains of IMC WFSA to [1 1 1 1] from [1, 0.25, 1, 4]. (WFSB was already all 1.)
We also disabled IMCWFS error offsets in servo filters.
After this, we steered IM2 to bring the beam position on IM4 trans back (at first we tried IM3, but it would make the OSEM output to become larger, and they're already close to saturation).
IFO locked after this without any problem.
We haven't done any jitter coupling optimization and I don't know if Robert had time to do it.
The first and the second attachment show the current and the old settings, respectively.
In the first one, yellow boxes show what we changed. Red box show what we changed but are somehow reverted (automatically?).
This is just an observation related to entry 22482 where I was investigating the relation between ISS and IMC.
After Keita and Cheryl set the IMC WFS gains back to 1, it seems to have shifted the pointing to the ISS array a little bit. See the attached trend.
The QPD signals at the ISS array have moved by 0.1 or so both in PIT and YAW when the WFS gain was changed to 1. Both PIT and YAW moved towards the center of the QPD although SUM seems to have decreased at the same time. I am not sure what exactly was going on. We may need to optimize the pico-motors to minimize the jitter-coupling to the ISS array.
Today I was able to remeasure the frequency noise coupling into DARM. I am not finished analyzing the data, but as a preview I am attaching the TF of the IMC VCO to the DCPD sum above 1 kHz. The coupling appears to go like 1/f, or perhaps slightly faster. A 1/f coupling would be consistent with what was found previously (a flat coupling from REFL9I power to DCPD photocurrent).
I was not able to get coherence between my CARM excitation and the IMC VCO below 1 kHz.
Attachment shows TF of demodulated REFL9 volts to DCPD sum (in milliamps). Compared to the previous measurement, the high-frequency portion is a factor of 3 higher. Additionally, we do not clearly see a transition to 1/f2 behavior around 250 Hz, as was seen in the last measurement. One might plausibly claim that the new measurement shows a knee around 100 Hz.
At 50 Hz, this TF predicts a frequency noise coupling that is a factor of 4 or so lower than the previous measurement.
Additionally, during the measurement I noticed that the nonlinear coupling into DARM was quite significant from 40 to 100 Hz; we could see broad wings around the excitation frequency.
Summary: We had single-IFO time so I tested the new inverse actuation filter for PCALX. WP5530 Sudarshan and I believe we tracked down the factor of 2 and sign error from the initial PCALX test, see aLog 22160. We wanted to do this test to confirm that. CBC injections: The waveform file is: https://daqsvn.ligo-la.caltech.edu/svn/injection/hwinj/Details/Inspiral/H1/coherenttest1from15hz_1126257408.out The XML parameter file is: https://daqsvn.ligo-la.caltech.edu/svn/injection/hwinj/Details/Inspiral/h1l1coherenttest1from15hz_1126257408.xml.gz I did three CBC injections. The start times of the injections were: 1128303091.000000000, 1128303224.000000000, and 1128303391.000000000. The command line to do the injections is: ezcawrite H1:CAL-INJ_TINJ_TYPE 1 awgstream H1:CAL-PCALX_SWEPT_SINE_EXC 16384 coherenttest1from15hz_1126257408.out 1.0 -d -d >> 20151006_log_pcal.out awgstream H1:CAL-PCALX_SWEPT_SINE_EXC 16384 coherenttest1from15hz_1126257408.out 1.0 -d -d >> 20151006_log_pcal.out awgstream H1:CAL-PCALX_SWEPT_SINE_EXC 16384 coherenttest1from15hz_1126257408.out 1.0 -d -d >> 20151006_log_pcal.out I have attached the log. I had to change the file extension to be posted to the aLog. DetChar injection: I injected Jordan's waveform file: https://daqsvn.ligo-la.caltech.edu/svn/injection/hwinj/Details/detchar/detchar_03Oct2015_PCAL.txt The start time of the injection is: 1128303531.000000000 The command line to do the injections is: awgstream H1:CAL-PCALX_SWEPT_SINE_EXC 16384 detchar_03Oct2015_PCAL.txt 1.0 -d -d >> 20151006_log_pcal_detchar.out I have attached the log. I had to change the file extension to be posted to the aLog.
Chris Buchanan and Thomas Abbott,
Quick follow-up with omega scans. It looks like most of the power is seen in GDS-CALIB_STRAIN about eight seconds after each listed injection time, consistently for each of these three injections. Doesn't look like there are omicron triggers for these times yet, but omega scans for GDS-CALIB_STRAIN are attached.
Full omega scans generated here:
https://ldas-jobs.ligo.caltech.edu/~christopher.buchanan/Omega/Oct07_PCALX_Inj1/
https://ldas-jobs.ligo.caltech.edu/~christopher.buchanan/Omega/Oct07_PCALX_Inj2/
https://ldas-jobs.ligo.caltech.edu/~christopher.buchanan/Omega/Oct07_PCALX_Inj3/
For complete documentation of the detchar safety injections:
The injections are 12 sine-gaussians, evenly spaced from 30hz to 430hz, 3 seconds apart with a Q of 6. There are three sets with increasing SNR of 25, 50, 100 (intended). However, the SNR is limited by the PCAL acuation range at higher frequencies.
To generate the waveforms I used the script written by Peter Shawhan / Andy located here: https://daqsvn.ligo-la.caltech.edu/websvn/filedetails.php?repname=injection&path=%2Fhwinj%2FDetails%2Fdetchar%2FGenerateSGSequencePCAL.m
I tuned the injections to stay within the PCAL actuation limits referenced in Peter Fritschel's document https://dcc.ligo.org/LIGO-
The intended time (seconds from start time of injections), freqency, snr, and amplitude (in units of strain) for all injections are pasted below:
__time__ __freq__ __SNR__ __AMP__
0.50 30.0 25.0 5.14e-21
3.50 38.2 25.0 4.96e-21
6.50 48.7 25.0 2.15e-21
9.50 62.0 25.0 2.07e-21
12.50 79.0 25.0 1.75e-21
15.50 100.6 25.0 1.78e-21
18.50 128.2 25.0 1.92e-21
21.50 163.3 25.0 2.06e-21
24.50 208.0 25.0 2.39e-21
27.50 265.0 10.0 1.11e-21
30.50 337.6 5.0 8.39e-22
33.50 430.0 5.0 8.51e-22
36.50 30.0 50.0 1.03e-20
39.50 38.2 50.0 9.92e-21
42.50 48.7 50.0 4.31e-21
45.50 62.0 50.0 4.14e-21
48.50 79.0 50.0 3.51e-21
51.50 100.6 50.0 3.55e-21
54.50 128.2 50.0 3.85e-21
57.50 163.3 50.0 4.12e-21
60.50 208.0 50.0 4.77e-21
63.50 265.0 20.0 2.21e-21
66.50 337.6 10.0 1.68e-21
69.50 430.0 10.0 1.7e-21
72.50 30.0 100.0 2.06e-20
75.50 38.2 100.0 1.98e-20
78.50 48.7 100.0 8.62e-21
81.50 62.0 100.0 8.27e-21
84.50 79.0 100.0 7.01e-21
87.50 100.6 100.0 7.1e-21
90.50 128.2 100.0 7.69e-21
93.50 163.3 100.0 8.24e-21
96.50 208.0 100.0 9.54e-21
99.50 265.0 40.0 4.43e-21
102.50 337.6 20.0 3.36e-21
105.50 430.0 20.0 3.4e-21
Here are the SNR of the CBC injections using the daily BBH matching filtering settings: end time SNR chi-squared newSNR 1128303098.986 20.35 32.86 19.86 1128303231.985 22.62 32.73 22.10 1128303398.985 23.25 21.05 23.25 Expected SNR is 18.4. Though a recovered SNR of 20 (about 10% percent difference from 18.4) is comparable to some of the SNR measurements when doing injections with CALCS in aLog 21890. Note this is the same waveform injected here except in aLog 21890 it starts from 30Hz. In both cases the matched filtering starts at 30Hz. The last two have a bit higher SNR though.
I edited Peter S.'s matlab script to check the sign of these PCAL CBC injections. Looks like the have the correct sign. See attached plots. To run code on LHO cluster: eval '/ligotools/bin/use_ligotools' matlab -nosplash -nodisplay -r "checksign; exit" Also in hindsight I should have done a couple CALCS CBC injections just to compare the SNR at the time with the PCAL injections.
gwdetchar-overflow -i H1 -f H1_R -O segments -o overflow --deep 1128303500 1128303651 124
It returns an empty table, so no overflows.
A time-domain check of the recovered strain waveforms is here: https://wiki.ligo.org/Main/HWInjO1CheckSGs. I found that the sign is correct, the amplitude matches within a few percent at most frequencies, and the phases are generally consistent with having a frequency-independent time delay of 3 or 4 samples (about 0.2 ms). Details are on that wiki page.
Thomas Abbot, Chris Buchanan, Chris Biwer
I've taken Thomas/Chris' table of recovered omicron triggers for the PCAL detchar injection and calculated the ratio of expected/recovered SNR and added some comments:
Recovered time time since frequency recovered expected recovered/expected comments
1128303531 (s) (Hz) SNR SNR SNR
1128303531.5156 0.515599966 42.56 34.07 25 1.3628
1128303534.5078 3.5078001022 61.90 39.41 25 1.5764
1128303537.5039 6.5039000511 64.60 28.29 25 1.1316
1128303540.5039 9.5039000511 79.79 23.89 25 0.9556
1128303543.5039 12.5039000511 1978.42 21.38 25 0.8552 suspicious, the frequency is very high
1128303546.502 15.5020000935 144.05 26.24 25 1.0496
1128303549.502 18.5020000935 185.68 26.38 25 1.0552
1128303552.502 21.5020000935 229.34 26.29 25 1.0516
1128303555.501 24.5009999275 918.23 27.34 25 1.0936
1128303558.501 27.5009999275 315.97 11.05 10 1.105
1128303564.5005 33.5004999638 451.89 6.76 5 1.352
1128303567.5156 36.515599966 50.12 68.53 50 1.3706
1128303570.5078 39.5078001022 61.90 78.23 50 1.5646
1128303573.5039 42.5039000511 76.45 52.04 50 1.0408
1128303576.5039 45.5039000511 91.09 48.42 50 0.9684
1128303579.5039 48.5039000511 116.63 47.73 50 0.9546
1128303582.502 51.5020000935 144.05 52.59 50 1.0518
1128303585.502 54.5020000935 177.91 52.3 50 1.046
1128303588.502 57.5020000935 261.81 54.8 50 1.096
1128303591.501 60.5009999275 323.36 55.64 50 1.1128
1128303594.501 63.5009999275 414.01 19.67 20 0.9835
1128303597.501 66.5009999275 390.25 9.55 10 0.955
1128303600.5005 69.5004999638 481.99 9.34 10 0.934
1128303603.5156 72.515599966 48.35 136.81 100 1.3681
1128303606.5078 75.5078001022 71.56 156.91 100 1.5691
1128303609.5039 78.5039000511 76.45 102.72 100 1.0272
1128303612.5039 81.5039000511 138.03 102.85 100 1.0285
1128303615.5039 84.5039000511 134.83 95.52 100 0.9552
1128303618.502 87.5020000935 1283.14 104.17 100 1.0417 frequency seems a bit high
1128303621.502 90.5020000935 211.97 107.18 100 1.0718
1128303624.502 93.5020000935 261.81 104.53 100 1.0453
1128303627.501 96.5009999275 323.36 109.66 100 1.0966
1128303630.501 99.5009999275 414.01 42.15 40 1.05375
1128303633.5005 102.5004999638 959.39 19.11 20 0.9555 this last injection had some kind of glitch on it
In most cases looks like the ratio is within 0.1 of 1. On a quick glance I see 10 injections that were not within this range.