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ID Date Author Type Category Subjectup Text Attachments
  16752   Fri Apr 1 17:02:02 2022 KojiUpdateOptical LeversSimplified sketch on MC tableWe are supposed to have BS Oplev Beams.
We don't like the shallow angle reflections
(i.e. AOI>45deg).
  
  16753   Fri Apr 1 22:22:29 2022 KojiUpdateOptical LeversSimplified sketch on MC tablePossibility to swap BS and ITMX
tables:
BS table, which Tega said MC table,
  
  4388   Tue Mar 8 16:59:47 2011 josephbUpdateCDSSimulated Plant WorkThe screens for the simplified c1spx model
have been updated.  I re-introduced
the suspension point information into the
  
  16948   Sat Jun 25 22:18:41 2022 TomislavUpdateASCSimulation and reality comparisonsIn the attachment please find plots comparing
controller output, local damping output,
and error signals.
 sens_output_comparison_23_6_new.pngcontr_out_comparison_23_6_new.pnglocal_damp_out_comp_23_6_new.png 
  14667   Wed Jun 12 22:02:04 2019 MilindUpdateCamerasSimulation enhancements Today, Rana asked me to work on improving
simulations based on the ideas we discussed
last week. As of the previous elog the simulation
 simulated_motion0.mp4simulated_motion0.mp4simulated_motion0.mp4 
  14698   Tue Jun 25 23:52:37 2019 MilindUpdateCamerasSimulation enhancements Yesterday,
Rana asked me to look at Hiro Yamamoto's
  
  14714   Mon Jul 1 20:11:34 2019 MilindUpdateCamerasSimulation enhancements Today, I read a lot more about BRDF and
modelling but could not make much headway
regarding the implementation in the simulation.
  
  14635   Thu May 23 15:37:30 2019 MilindUpdateCamerasSimulation enhancements and performance of contour detection
Implemented image level noise for
simulation. Added only uniform random noise.
Implemented
addition of uniform random noise to any sinusoidal
 6x 
  14638   Sat May 25 20:29:08 2019 MilindUpdateCamerasSimulation enhancements and performance of contour detection
I used the same motion as defined
in the previous elog. I gradually added noise
to the images. Noise added was uniform random
 residue_normalised_x.pdfresidue_normalised_x.pdfresidue_normalised_x.pdfpredicted_motion_x.pdfnormalised_comparison_y.pdf 
  9326   Fri Nov 1 17:01:46 2013 GabrieleSummaryLSCSimulation of REFL_3f signal when the arms come in I simulated how the 3f signal is
affected by the resonance condition of the
arms.
 refl_3f_I_vs_cavity_tuning_noresf2.pngrefl_3f_I_vs_cavity_tuning.png 
  9327   Fri Nov 1 17:44:06 2013 KojiSummaryLSCSimulation of REFL_3f signal when the arms come inYes, the resonance of the 2nd-order sidebands
to the IFO screws up the 3f scheme.
2f (~22MHz) and 10f (~110MHz) are
  
  9337   Mon Nov 4 14:11:23 2013 GabrieleSummaryLSCSimulation of REFL_3f signal when the arms come in

    

       
            
  
  16934   Tue Jun 21 18:41:46 2022 TomislavUpdateASCSimulation plotIn the attachment please find a comparison
of error signals of simulation and reality.
For C1:IOO-WFS1/2_PIT_IN1 excess signal ('belly')
 sens_output_comparison.png 
  16930   Mon Jun 20 19:46:04 2022 TomislavUpdateASCSimulation plotsIn the attachment please find IMC ASC simulation
plots. Let me know what you think, if you
want some other plots, and if you need any
 pit_mot_cl_MCs.pngloc_damp_cl_MCs.pngcontr_output_cl_MCs.pngsens_output_cl_MCs.pngBS_motion_cl_MCs.png 
  11564   Thu Sep 3 02:12:08 2015 ranaUpdateCDSSimulink Webview updatedBack in 2011, JoeB wrote
some entries on how to automatically
update the Simulink webview stuff.
  
  11567   Thu Sep 3 13:25:40 2015 ranaUpdateCDSSimulink Webview updatedadded the cron script for this to megatron
to run at 8:44 AM each morning. Here's
the new MegaCron attached :-()-
 crontab_150903.rtf 
  12727   Tue Jan 17 20:47:23 2017 ranaUpdateCDSSimulink Webview updatedSeems like this stops working every ~2
years. Its been busted since early 2016 according
to cron, so I fixed up the paths and restored
  
  8299   Fri Mar 15 02:14:27 2013 JenneUpdateCDSSimulink linking to wrong library partJamie and I discovered a problem with Matlab/Simulink
earlier today. 
In the end suspension models, there
  
  16168   Fri May 28 17:32:48 2021 AnchalSummaryALSSingle Arm Actuation Calibration with IR ALS BeatI attempted a single arm actuation calibration
using IR beatnote (in the directions of soCal
idea for DARM calibration)
 SingleArmActCalwithIRALSBeat.pdfstateSpaceModel.zip 
  16171   Tue Jun 1 16:55:32 2021 Anchal, PacoSummaryALSSingle Arm Actuation Calibration with IR ALS BeatRana suggested in today's meeting to
put in a notch filter in the XARM IR PDH
loop to avoid suppressing the excitation
 SingleArmActCalwithIRALSBeat-1306624785.pdf 
  16192   Tue Jun 8 11:40:53 2021 Anchal, PacoSummaryALSSingle Arm Actuation Calibration with IR ALS BeatWe attempted to simulate "oscillator
based realtime calibration noise monitoring"
in offline analysis with python. This helped
 ITMX_Cal_Noise_Spectrum_1307143423.pdf 
  16242   Fri Jul 9 15:39:08 2021 AnchalSummaryALSSingle Arm Actuation Calibration with IR ALS Beat [Correction]I did this analysis again by just doing
demodulation go 5s time segments of the 60s
excitation signal. The major difference is
 ITMX_calibration_With_ALS_Beat.pdf 
  1757   Thu Jul 16 10:52:58 2009 ClaraUpdatePEMSingle Channel TRS-RNC CableI made and tested a female-to-female TRS(audio)-RNC
cable. It only has a single channel, so it
won't work for stereo speakers or anything,
  
  1432   Thu Mar 26 04:09:38 2009 YoichiUpdateIOOSingle X arm lock spectra with different MC lock schemesThe attached plots show MC_F, FSS_FAST_F and
XARM IN/OUT spectra with different MC locking
modes.
 XarmSpectra.pdfXarmSpectraZoom.pdf 
  11061   Tue Feb 24 18:54:26 2015 ericqUpdateASCSingle arm QPD ASC stabilityI've lowered the UGFs for the transmission
QPD servos to ~1-2Hz, and made it just an
integrator. I left the arms locked with the
 trend.png 
  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
  
  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 
  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.
  
  17221   Wed Nov 2 16:34:56 2022 PacoSummaryCalibrationSingle arm calibration run [Anchal, Paco]

We added a notch filter on ETMY
(the actuation point of the YARM control
 frac_adev_demod_ybeat.pdf 
  15611   Mon Oct 5 00:37:19 2020 gautamUpdateBHDSingle bounce interferometer lockedSummary:

The simple interferometer, composed
of a single bounce reflection from ITMY and
 simpleHomodyne.pngsingleBounceIFO.pdfproposedController.pdffreeRunningSuppressed.pdf 
  15612   Mon Oct 5 00:53:16 2020 KojiUpdateBHDSingle bounce interferometer locked🤘🤘🤘

 
  
  15290   Wed Apr 1 00:51:41 2020 gautamUpdateWienerSlightly improved MCL FFSummary:

Retraining the MCL filters resulted
in a slight improvement in the performance.
 MC2_act_calib.pdfIIR_fit_to_FIR.pdfFIRvIIR.pdf 
  12290   Tue Jul 12 09:18:12 2016 ericqUpdateGeneralSlippery substance mysteryI found a note on Steve's desk that R.
Abbott left yesterday afternoon about an
unidentified slippery substance being present
  
  12291   Tue Jul 12 09:35:51 2016 JohannesUpdateGeneralSlippery substance mysteryI've noticed the spot that Rich means
before, too. I think you only notice this
when you're wearing the shoe covers,
  
  13443   Wed Nov 22 00:54:18 2017 johannesOmnistructureComputersSlow DAQ replacement computer progressI got the the SuperMicro 1U server box
from Larry W on Monday and set it up in the
CryoLab for initial testing.
  
  13458   Wed Nov 29 21:40:30 2017 johannesOmnistructureComputersSlow DAQ replacement computer progress[Aaron, Johannes]

We
configured the AtomServer for the Martian
  
  13185   Thu Aug 10 14:25:52 2017 gautamUpdateCDSSlow EPICS channels -> Frames re-enabledI went into /opt/rtcds/caltech/c1/target/daqd,   
  13189   Fri Aug 11 00:10:03 2017 gautamUpdateCDSSlow EPICS channels -> Frames re-enabledSeems
like something has failed after I did this
  
  13192   Fri Aug 11 11:14:24 2017 gautamUpdateCDSSlow EPICS channels -> Frames re-enabledI commented
out the line pertaining to C0EDCU again,
now full frames are being written
  
  13197   Fri Aug 11 18:53:35 2017 gautamUpdateCDSSlow EPICS channels -> Frames re-enabled


  
  8957   Thu Aug 1 21:28:09 2013 gautamUpdateCDSSlow channels set-up in ALS The following
slow channels have been added and are now
  
  12651   Wed Nov 30 14:54:01 2016 JohannesUpdateCDSSlow machine replacementI was talking with Larry yesterday, and
he suggested the rack-mounted supermicro
machines SYS-5017A-EP
  
  11754   Wed Nov 11 22:50:39 2015 KojiConfigurationCDSSlow machine time&dateI was gazing at the log file for Autolocker
script (/opt/rtcds/caltech/c1/scripts/MC/logs/AutoLocker.log
)
  
  4201   Tue Jan 25 20:42:46 2011 OsamuUpdateGreen LockingSlow servo for green laserI implemented a slow servo for green laser
thermal control on c1scx.mdl. Ch6,7 of ADC
and ch6 of DAC are assigned for this servo
  
  4202   Tue Jan 25 21:57:59 2011 KojiUpdateGreen LockingSlow servo for green laser1. The dewhitening filter CH6 had no output.
I disconnected the cable and put it to the
monitor out of the AI filter.
 110125_Xend_thermal.pdf 
  665   Mon Jul 14 00:36:19 2008 JohnSummaryPSLSlow sweep of laser temp - PMC PZT responseJohn, Rana

Follow up to # 663
 SlowTsweep.png 
  15159   Mon Jan 27 18:16:30 2020 gautamConfigurationComputersSluggish megatron?I've also been noticing that the IMC
Autolocker scripts are running rather sluggishly
on Megatron recently. Some evidence - on
  
  15164   Tue Jan 28 15:39:04 2020 gautamConfigurationComputersSluggish megatron?There were a bunch of medm processes stalled
on megatron (connected with screenshot taking).
To see if they were interfering with the
  
  4844   Mon Jun 20 18:12:20 2011 NicoleUpdateSUSSmall Table Cleaned and Levelled    P6220198.JPGP6220199.JPG 
  5483   Tue Sep 20 16:31:24 2011 KeikoUpdateIOOSmall modulation depth Modulation
resonator box is removed and the modulation
  
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