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New entries since:Wed Dec 31 16:00:00 1969
ID Datedown Author Type Category Subject Text Attachments
  17297   Tue Nov 22 08:56:27 2022 JCUpdatePSLPMC input beam alignment[Paco, Anchal, JC]

C1:PSL-PMC_PMCTRANSPD ~ 0.715 this
morning, this was increased to ~0.730. There
 Screenshot_from_2022-11-22_08-58-45.png 
  17296   Mon Nov 21 18:43:46 2022 yutaUpdateBHDc1hpc and c1lsc modified to send BHD_DIFF and BHD_SUM[Anchal, Yuta]

To send BHD signals from c1hpc after
 Screenshot_2022-11-21_18-42-49_BHD.png 
  17295   Mon Nov 21 18:33:05 2022 AnchalUpdateSUSMC2 OSEMs calibrated using MC_FRepeated this for MC2 using the error measurement
technique mentioned in 40m/17286
using this notebook.
  
  17294   Mon Nov 21 17:44:00 2022 yutaSummaryBHDMICH BHD displacement sensitivity with AS55_Q and BHD_DIFF[Paco, Yuta]

MICH displacement sensitivity was
compared under AS55_Q locking and BHD_DIFF
 Screenshot_2022-11-21_17-33-20_OLTF.pngScreenshot_2022-11-21_17-45-25_MICHBHDDisplacement.png 
  17293   Mon Nov 21 15:16:12 2022 TegaUpdateCDSworkstation upgradeWe are currently working on donatella workstation
upgrade, which we are calling donatellaclone
for now. After installing Debian 11, we install
  
  17292   Mon Nov 21 14:55:58 2022 JCConfigurationGeneralLED Instead of Incandescent Lights Electrical came by today to see the lights.
The issue may be the switches, but they will
come by tomorrow to solve the issue. A couple
  
  17291   Mon Nov 21 11:52:50 2022 RadhikaSummaryCalibrationSingle arm cal with 5 lines[Paco, Radhika]

We set out to realign the YARM
AUX laser input into the arm cavity.
  
  17290   Mon Nov 21 09:13:31 2022 JCUpdatePSLPMC input beam aligned again, IMC [JC, Paco]

I attempted to align PMC Beam from
a transmission of 0.72. I failed to do so
  
  17289   Sun Nov 20 13:42:21 2022 AnchalUpdateSUSIMC testI repeated this test for the following
configuration:


PSL shutter closed at good
  
  17288   Fri Nov 18 23:21:54 2022 ranaUpdateASCIMC WFS ongoingOn Wednesday, I did some rework of the
MC WFS gains. I think it should still work
as before as long as the overall input gain
  
  17287   Fri Nov 18 22:46:02 2022 yutaSummaryBHDMICH optical gain measurements with different LO phases, with signsMICH
optical gain with a sign was measured with
different LO phases over ~180 degrees, with
 UncalibratedMICHOpticalGainVSLOphase20221118.pngCalibratedMICHOpticalGainVSLOphase20221118.png 
  17286   Fri Nov 18 17:00:15 2022 AnchalUpdateSUSMC1 and MC3 OSEMs calibrated using MC_FAfter the MC1 osem dewhitening was fixed,
I did the calibration of MC1 OSEM signals
using MC_F using this notebook.
  
  17285   Fri Nov 18 16:58:39 2022 yutaSummaryBHDActuator calibrations for MICH BHDAs there is some confusion in actuator
calibration, we have done the measurement
again from scratch.
 7x 
  17284   Fri Nov 18 13:05:00 2022 yutaSummaryBHDGains adjusted for bandstop filters for BHD optics[Paco, Yuta]

We realized that bandstop filters
 Screenshot_2022-11-18_13-16-31_AS1ViolinFilters.png 
  17283   Fri Nov 18 09:00:27 2022 JCUpdateVACPressure Gauge InformationI bought the spare Full-Range Pirani Gauge
a while ago and realized that I never logged
this. The Pirani Gauges we are using is described
  
  17282   Thu Nov 17 20:02:10 2022 yutaSummaryBHDMICH optical gain measurements with different LO phasesMICH
optical gain was measured with different
LO phases over ~90 degrees.
 UncalibratedMICHOpticalGainVSLOphase20221117.pngCalibratedMICHOpticalGainVSLOphase20221117.png 
  17281   Thu Nov 17 16:48:07 2022 AnchalFrogsComputer Scripts / ProgramsFSS SLOW servo running NowI've moved the FSS Slow PID script
running to megatron through systemd daemons.
The script is working as expected right now.
  
  17280   Thu Nov 17 15:53:47 2022 JCConfigurationCamerasITMX Camera -- attempt at fixThe issue was the power supply.

  
  17279   Thu Nov 17 14:12:58 2022 yutaSummaryBHDOptical gain calibrations for BHD MICH with lower UGF[Paco, Yuta]

We found that MICH UGF was unexpectedly
 Screenshot_2022-11-17_14-39-17_MICHLOPHASEOLTF.pngScreenshot_2022-11-17_14-41-40_LowUGFConfiguration.png 
  17278   Thu Nov 17 12:24:48 2022 PacoConfigurationCamerasITMX Camera -- attempt at fixI found that an old BNC cable for ITMXF
video existed so I first tried swapping both
ends of the cable, one on the ITMX viewport
  
  17277   Thu Nov 17 11:24:39 2022 JCHowToLSCLocking MICH[Yuta, JC]

Here is the Yuta's Alignment
Scheme from elog
  
  17276   Thu Nov 17 09:06:35 2022 JCSummaryGeneralLight ReplaceElectrical Shop came in today to replace
the lightbulbs around 40m. I supervised the
entire visit, inside and outside the lab
  
  17275   Thu Nov 17 07:39:01 2022 JCConfigurationCamerasITMX CameraComing in this morning, I found ITMX Camera
malfunctioning.
  
  17274   Wed Nov 16 18:41:17 2022 yutaSummaryBHDOptical gain calibrations for BHD MICHOptical gains of AS55 and BH55 are calibrated
for BHD MICH.

LO-ITM single bounce:
 Screenshot_2022-11-16_18-57-12.pngScreenshot_2022-11-16_18-49-53_BHDMICHCalLines.pngLSC-AS55_Q_ERR_DQ_1352689642.png 
  17273   Wed Nov 16 15:09:08 2022 yutaUpdateBHDBHD fringe contrast measured with unwhitening filtersBHD fringe visibility was measured again
with unwhitening filters on on BHDC_A and
B, which removed signal leakage to zero (
 ContrastMeasurements20221116_edited.pdf 
  17272   Wed Nov 16 12:53:36 2022 ranaUpdateASCIMC WFS ongoingIn the middle of aportioning gains and
signs in the IMC WFS screen, so beware. More
updates soon.
  
  17271   Wed Nov 16 11:56:21 2022 RadhikaUpdatePSLPMC input beam aligned again, IMC [Yuta, JC, Radhika]

PMC input beam was aligned again,
bringing transmission from 0.70 to ~0.75.
 Screen_Shot_2022-11-16_at_12.04.18_PM.png 
  17270   Tue Nov 15 19:00:56 2022 yutaSummaryBHDMICH locked with balanced homodyne readout at some LO phase[Paco, Yuta]

MICH
was locked with BHD DCPD A-B signal with
 Screenshot_2022-11-15_18-34-25_MICHBHDLocked.pngScreenshot_2022-11-15_19-02-02_MICHLine.pngScreenshot_2022-11-15_18-38-20_BHDMICHOLTF.png 
  17269   Tue Nov 15 17:58:00 2022 PacoConfigurationCamerasPOP camera realignment after IFO alignment[Paco, Yuta]

I swapped the 1 inch BS and lenses
along the POP beam to clear the apertures
 Screenshot_2022-11-15_16-22-26_AlignedBothArmLocked.pngPXL_20221115_215851553.jpgPXL_20221115_233429500.jpg 
  17268   Tue Nov 15 17:08:59 2022 PacoUpdateBHDRequest for estimates[Yehonathan, Yuta, Paco]

We would like to estimate:


LO phase sensitivty (for
  
  17267   Tue Nov 15 16:34:55 2022 alexUpdateGeneralDebian with SensorayI have confirmed the ability to install
the sensoray drivers on Debian 11 in a virtual
machine environment. I will
 sensoray_debian_VM_1.png 
  17266   Tue Nov 15 11:04:01 2022 PacoSummaryCalibrationSingle arm cal with 5 linesYALS Hardware inspection

The
ALS Cal for ITMY actuation was off by ~ 1000,
so I decided I don't trust / understand
 als_cal_osc_2022_11_15.png 
  17265   Mon Nov 14 17:45:02 2022 yutaUpdateBHDBHD DC PD unwhitening and removing cables to c1lsc[Paco, Yuta]

We removed splitter to route BHD DC
 Screenshot_2022-11-15_13-08-17.png 
  17264   Mon Nov 14 14:52:56 2022 PacoConfigurationSUSBHD SUS Coil output balance[JC, Paco]

We installed a steering mirror
intersecting the BHD beam path and put the
 PXL_20221114_224829547~2.jpgScreenshot_2022-11-14_16-07-26_AS1CoilBalancing.pngScreenshot_2022-11-14_16-23-17_AS4CoilBalancing.pngScreenshot_2022-11-14_16-38-16_LO1CoilBalancing.pngScreenshot_2022-11-14_16-54-14_LO2CoilBalancing.png 
  17263   Sat Nov 12 21:59:24 2022 AnchalFrogsComputer Scripts / ProgramsFSS SLOW servo not runningI stopped the Docker PID script and started
the old python script on megatron. Instructions
on how to do this are here.
  
  17262   Fri Nov 11 20:59:13 2022 ChrisFrogsComputer Scripts / ProgramsFSS SLOW servo not runningThe problem with trends was due to the
epics data collection process (standalone_edc)
that runs on c1sus. When all the FEs were
  
  17261   Fri Nov 11 20:01:56 2022 ranaFrogsComputer Scripts / ProgramsFSS SLOW servo not runningI was trying to debug why the NPRO PZT
is all over the place, and it turns out that
the new FSS SLOW script is not actually running.
  
  17260   Fri Nov 11 19:47:04 2022 ranaUpdateSUSMC SUS were overdamped: damping gains all reducedAfter clicking on the extra MC1 unwhitening
filter, I was going to retune the damping
gains to give a Q ~ 5 for the suspension.
  
  17259   Fri Nov 11 19:20:23 2022 ranaUpdateSUSMC1 OSEMs output is weirdI
turned on the extra un-whitening filter (not
 secretIMCsecrets.png 
  17258   Fri Nov 11 19:11:50 2022 JCUpdateGeneralWFS Whitening and Demod BoardsWFS Whitening and Demod boards were scavenged.
 IMG_6419.JPGIMG_6424.JPG 
  17257   Fri Nov 11 14:15:45 2022 PacoSummaryCalibrationSingle arm cal with 5 linesI turned all the LSC oscillators on and
used the digital demod for BEATYF (fine y
als beat) to grab the data. For this I added
  
  17256   Fri Nov 11 11:29:11 2022 AnchalUpdateSUSMC1 OSEMs output is weirdLate elog; original time Thursday, Nov
10 16:00 2022

MC1 is using a new satellite
 MC1_UR_WhtnBrd_TF.png 
  17255   Thu Nov 10 20:46:32 2022 ranaUpdateASCIMC WFS servo diagnosisTo check out the bandwidths and
cross-coupling in the WFS loops, I made a
script (attached) to step the offsets around,
 toggleWFSoffsets.pyimc-wfs-steps.pdf 
  17254   Thu Nov 10 18:09:28 2022 ranaUpdateSUSMC WFS settings all weirdToday I found the MC WFS settings all weird.
Not only was the input slider set to zero,
but the filter bank outputs were off, and
 Photo_on_11-10-22_at_6.11_PM.jpg 
  17253   Thu Nov 10 17:40:31 2022 PacoSummaryCalibrationCalibration PlanPlan to calibrate single arm actuation
strength


Lock single arm cavity
 allan_dev_beatY_demodI.pdfasd_and_rms_beatY_demodI.pdf 
  17252   Wed Nov 9 20:29:20 2022 AnchalUpdateSUSMC2 and MC3 set to undergo free swing test tonightI have set a free swing test for MC2 and
MC3 to trigger at 1 am tonight. The test
should last for about 4.5 hrs upto 5:30 am.
  
  17251   Wed Nov 9 20:01:38 2022 AnchalUpdateSUSMC1 OSEMs output is weirdI took a coil to OSEM transfer function
for MC1 osems  (LL, UR) today and again
the slope of the transfer function was -1.4
 MC1_COIL_to_OSEM_TF.pdfMC3_COIL_to_OSEM_TF.pdfMC1_UR_OSEM_TF.pdf 
  17250   Wed Nov 9 14:19:18 2022 TegaUpdateCDSfb1 OS migration[Tega, Chris]

We migrated fb1 OS from the
teststand fb1 drive to the internal 2TB RAID
  
  17249   Wed Nov 9 11:07:16 2022 AnchalUpdateSUSIMC testFollowing configurations were kept today
morning:

  
  17248   Wed Nov 9 07:49:59 2022 ranaUpdateSUSMC2 OSEMs calibrated using MC_FIt would be good if you can post the uncertainties
with these measurements (and for generally
any measurements). This is so that we can
  
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