Back after a lock loss and a large earthquake. Violin modes are quite high so we will be damping those for a while, but we are now in Observing.
Thu Dec 07 10:12:35 2023 INFO: Fill completed in 12min 31secs
Travis confirmed a good fill curbside.
TITLE: 12/07 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Earthquake
OUTGOING OPERATOR: Ryan S
CURRENT ENVIRONMENT:
SEI_ENV state: EARTHQUAKE
Wind: 18mph Gusts, 13mph 5min avg
Primary useism: 0.18 μm/s
Secondary useism: 0.51 μm/s
QUICK SUMMARY: 7.1M earthquake from New Caldonia area killed a 26.5hour lock almost 3 hours ago. The SEI_ENV node just switched out of earthquake mode and has started relocking now.
TITLE: 12/07 Eve Shift: 00:00-08:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 151Mpc
INCOMING OPERATOR: Ryan S
SHIFT SUMMARY:
H1 in Observing the entire shift (currently at 23hrs for the lock). Microseism has slowly been decreasing.
LOG:
H1's been locked for 19+hrs w/ a range around/just-under 155Mpc. Microseism has slowly trended down to the 95th percentile level. There was a M5.8 EQ off Chilean coast H1 (& L1) both coasted through no worse for wear.
TITLE: 12/07 Eve Shift: 00:00-08:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 155Mpc
OUTGOING OPERATOR: TJ
CURRENT ENVIRONMENT:
SEI_ENV state: CALM
Wind: 6mph Gusts, 3mph 5min avg
Primary useism: 0.05 μm/s
Secondary useism: 0.66 μm/s
QUICK SUMMARY:
H1's been locked 15.75+hrs with a range around 153Mpc.
Handoffs from TJ:
TITLE: 12/07 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 153Mpc
INCOMING OPERATOR: Corey
SHIFT SUMMARY: Locked for almost 15.5 hours. Took some coordinated time today out of observing for calibration measurements and commissioning.
LOG:
Jenne, TJ, Sheila, Naoki,
We looked at some trends together of what's been happening with H1's range, PRG, and various sensors related to the PRC over the last few months.
The first screenshot here shows some of these trends, with the first horizontal cursor showing, Oct 24th a day when we had a particularly good BNS range just above 160 Mpc. The vertical cursors are set to show a reference of what the various signals were on that good day. Some things to notice:
I do not believe we have any sensors that are more stable than just relying on the mechanical stability of the suspensions themselves. In the past, all our attempts to stabilize the uncontrolled dof in the IMC have produced worse results than relying on the stability of its suspensions.
Naoki, Sheila
We looked at some spectra comparisons. In both attached screenshots the references are the 160+ mpc time from Oct 24th. The first one shows the good time from Oct 24th compared to a time when the DARM noise was high due to clipping from Nov 29th. This shows features that have been aloged else where, the yaw ASC loops have excess noise 74502, the coherence of LSC and ASC POP is high and the ASC pop signals have extra noise (74580). There isn't as dramatic a difference in the LSC signals, which are measured in the path that was clipped, which is interesting.
The second attachment is a comparison to after our recent PR3 moves, motived by wondering if some small amount of remaining clipping could explain why our sensitivity isn't as good as it was in October. The noise of the POP sensors and the coherence of LSC and ASC POP are similar now to the time of our best range, so there isn't any obvious indication here that we are still clipping.
X End Station Measurement:
During the Tuesday maintenace, the PCAL team(Rick Savage, Dana Jones, & Tony Sanchez) went to EndX with Working Standard Hanford aka WSH(PS4) and took an End station measurements.
The EndX Station Measurements were carried out according to the procedure outlined in Document LIGO-T1500062-v15, Pcal End Station Power Sensor Responsivity Ratio Measurements: Procedures and Log, and was completed by 11:45 am.
Note:
After the normal measurement, we did a few auxilary measurments.
LIGO-T1500062-v15 Measurement Log
First thing we did is take a picture of the beam spot before anything is touched! I then put the target apature cap on the RX sphere to see how far off from center the beam is.
Martel:
Martel Voltage sources voltage into the PCAL Chassis's Input 1 channel. We record the GPStimes that a -4.000V, -2.000V and a 0.000V voltage was applied to the Channel. This can be seen in Martel_Voltage_Test.png. We also did a measurement of the Martel's voltages in the PCAL lab to calculate the ADC conversion factor, which is included on the above document.
Plots while the Working Standard(PS4) is in the Transmitter Module during Inner beam being blocked, then the outer beam being block, followed by the background measurment: WS_at_TX.png.
The Inner, outer, and background measurement while WS in the Receiver Module: WS_at_RX.png.
The Inner, outer, and background measurement while RX Sphere is in the RX enclosure, which is our nominal set up without the WS in the beam path at all.: TX_RX.png.
The last picture is of the Beam spot after we had finished the measurement. Note this beam spot is only ONE beam but the beam postitons were not adjusted during the measurement.
All of this data is then used to generate LHO_EndX_PD_ReportV2.pdf which is attached, and a work in progress in the form of a living document. This document was created with the PCALPARAMS['WHG'] = 0.916985 # PS4_PS5 as of 2023/04/18
And Not the latest number [PCALPARAMS['WHG'] = 0.91536 # 12/05/2023].
But I did run the report with the latest number just for my own curiosity and marked it down as a "Monday End Station measurement" performed on 2023-12-04 so it sits right behind the real measurement on the 5th and it doesn't vary by much: LHO_ENDX_PD_TEST_REPORT.pdf
All of this data and Analysis has been commited to the SVN :
https://svn.ligo.caltech.edu/svn/aligocalibration/trunk/Projects/PhotonCalibrator/measurements/LHO_EndX/
This is where the measurement normally ends, but instead we took a few more iteresting measurements.
Auxilary Measurements:
Rx Sphere is in it's nominal location and the WS was not in the beam path at all.
Opened the Shutter GPStime 1385839530
RxPD = 0.2234 before moving the beam block.
Moved the beam block allowing both beams to hit RX sphere.
start time 1385839590
End time 1385839890
Shutter both beams for a background measurement.
Start time 1385839945
RxPD = 4.30966e-5
End time 1385840005
The OFSPD_OFFSET was set to 6.0. This should be the maximum power we reach while normally operating.
start time 1385840225
RXPD = 0.805388
TXPD = 0.813297
End time 1385840525
PCAL Lab Responsivity Ratio Measurement:
A WSH/GSHL (PS4/PS5)FrontBack Responsivity Ratio Measurement was ran, analyzed, and pushed to the SVN.
The analysis of this measurement produces 4 PDF files which we use to vet the data for problems.
raw_voltages.pdf
avg_voltages.pdf
raw_ratios.pdf
avg_ratios.pdf
Obligitory BackFront PS4/PS5 Responsivity Ratio:
A WSH/GSHL (PS4/PS5)BF Responsivity Ratio measurement was ran, analyzed, and pushed to the SVN.
The analysis of this measurement produces 4 PDF files which we use to vet the data for problems.
raw_voltages2.pdf
avg_voltages2.pdf
raw_ratios2.pdf
avg_ratios2.pdf
This adventure has been brought to you by Rick Savage, Dana Jones & Tony Sanchez.
Two new measurements were added to the svn, one on the 3rth of Dec, and another on the 4th.
The one on the 4th , xtD20231204 actually happened on Dec 5th and uses much of the data from Dec 5th except starttime 7 and 8 on the config.py file were changed to reflect the time that we had both beams on the RX sensor instead of only the Inner or outer.
This resulted increasing in magnitude of the Rx Calibrarion. More information can be found on the SVN.
The one on the 3rd , xtD20231203 actually happened on Dec 5th as well and uses much of the data from Dec 5th except starttime 7 and 8 on the config.py file were changed to reflect the time that we had both beams on the RX sensor AND ther OFS OFFSET was set to 6.0.
This resulted increasing in magnitude of the Rx Calibrarion. More information can be found on the SVN.
We installed the new MICHFF FM8 filter that Gabriele fit 74602, 74595. This looks to do a great job suppressing the MICH excitation, see pink trace attached. A little less suppression 150-200Hz so we'll want to run some coherences with NLN data to see if we care about MICH in this region. Saved in safe and observe sdf and ISC_LOCK.
Left the MICHFF off for 5 minutes 22:05:45 to 22:10:45UTC.
Tagging CAL, this may have an effect on the 17.6Hz line 74259
Louis and I discussed this and it seems there may have been a very small change but it is likely nothing significant, see attached plot.
Naoki and I took some no squeezing time 20:34 to 20:42UTC. See 4.2dB at 1kHz. Plot attached.
We tried to tune the OPO temperature with the aim of reducing the yellow 300Hz BLRM H1:SQZ-OPO_TEC_SETTEMP changed from 31.49 to 31.485deg. The SQZ_ANG_ADJUST guardian adjusted the SQZ angle as we adjusted the OPO temperature, which is nice.
I took a look at a few times that the PSL dust monitors have alarmed over the past two weeks, I was looking to see if there was any correlation between the wind and the CS dust monitors, particularly the PSL ones. I found a few examples where the winds picked up and then the dust monitors saw their counts increase (ref1, ref2, ref3, ref5), but only in ref1, and maybe 5 do we see the dust propogate out to the other dust monitors. In ref1 the wind also further increases after the dust counts increase and there is not another dust count jump from it. I also saw a few times where the dust counts increased without any real wind changes (ref4, ref6). Ref5 seems to show some dust moving around the LVEA with the wind?
Start:
PST: 2023-12-06 11:28:18.787126 PST
UTC: 2023-12-06 19:28:18.787126 UTC
GPS: 1385926116.787126
End:
PST: 2023-12-06 11:50:26.331166 PST
UTC: 2023-12-06 19:50:26.331166 UTC
GPS: 1385927444.331166
Files:
2023-12-06 19:50:26,172 | INFO | File written out to: /ligo/groups/cal/H1/measurements/DARMOLG_SS/DARMOLG_SS_20231206T1928
20Z.hdf5
2023-12-06 19:50:26,191 | INFO | File written out to: /ligo/groups/cal/H1/measurements/PCALY2DARM_SS/PCALY2DARM_SS_2023120
6T192820Z.hdf5
2023-12-06 19:50:26,204 | INFO | File written out to: /ligo/groups/cal/H1/measurements/SUSETMX_L1_SS/SUSETMX_L1_SS_2023120
6T192820Z.hdf5
2023-12-06 19:50:26,218 | INFO | File written out to: /ligo/groups/cal/H1/measurements/SUSETMX_L2_SS/SUSETMX_L2_SS_2023120
6T192820Z.hdf5
2023-12-06 19:50:26,230 | INFO | File written out to: /ligo/groups/cal/H1/measurements/SUSETMX_L3_SS/SUSETMX_L3_SS_2023120
6T192820Z.hdf5
ICE default IO error handler doing an exit(), pid = 354122, errno = 32
LLO and us have dropped out of Observing for planned calibration and commissioning time to last until 1500 PT (2300 UTC).
Back to Observing at 2304 UTC
Wed Dec 06 10:10:05 2023 INFO: Fill completed in 10min 1secs
Gerardo confirmed a good fill curbside.
TITLE: 12/06 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 155Mpc
OUTGOING OPERATOR: Ryan S
CURRENT ENVIRONMENT:
SEI_ENV state: CALM
Wind: 9mph Gusts, 6mph 5min avg
Primary useism: 0.05 μm/s
Secondary useism: 0.84 μm/s
QUICK SUMMARY: Range has been slowly dropping over the last hour, unsure why so far. Violins are still slowly decreasing.
The range seems ro have recovered, but has been more glitchy. The dip in range seems to correlate with noise seem in our DARM BLRMS between 10-60Hz and maybe a little into the 60-100Hz band as well. This makes me think that its the the smae noise that we've been seeing. I don't see anything in the 30-100mHz Z SEI BLRMS though.
M. Pirello, F. Mera
We completed the install of the new magnetic labels to the Kepco supplies on the Mezanine today.
While placing one of the labels, the power on the HAM-6 PZT driver was unintentionally interrupted. We contacted the control room and they verified that this glitch did not affect anyone and we could turn this power back on.
One side note, the supply in H1-VDC-C6 slot 26 LHS which supplies HI-ISC R3 & R5 (HAM-6 +18V supply) is nearly maxed out at 20V 17A in the Mezannine, see attached photo. The two supplies below it are the old squeezer +/- 18V. These are currently unused, disconnected at the racks, but still on (not sure why we keep these supplies on). We could alleviate the load by splitting up R3 and R5 with respect to +/-18V and using this +/- 18V for either R3 or R5.
The old squeezer rack will be reporpused for the balanced homodyne suspensions. This may require its own set of supplies. We will also have more ISC electroncis, so splitting the ISC-R3 and ISC-R5 18V supplies might be needed.
* Added to ICS DEFECT-TCS-7753, will give to Chrisitna for dispositioning once new stock has arrived.
New stock arrived and has been added to ICS. Will be stored in the totes in the TCS LVEA cabinet.
ISC has been updated. As of August 2023, have 2 spare SLEDs for each ITM HWS.
ISC has been updated. As of October 2023, have 1 spare SLEDs for each ITM HWS, with more ordered.
Spare 8240nm SLEDs QSDM-840-5 09.23.313 and QSDM-840-5 09.23.314 arrived and will be placed in the TCS cabinets on Tuesday. We are expecting qty 2 790nm SLEDs too.
Spare 790nm SLEDs QSDM-790-5--00-01.24.077 and QSDM-790-5--00-01.24.079 arrived and will be placed in the TCS cabinets on Tuesday.
A few notes on relocking.