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ID Date Author Type Category Subjectup Text Attachments
  17171   Mon Oct 3 15:19:05 2022 PacoUpdateBHDLO phase noise and control after violin mode filters[Anchal, Paco]

We started the day by taking a
spectrum of C1:HPC-LO_PHASE_IN1,
 filters_c1sus_lo1_lsc.pngBHDC_asd_act.pngboosted_lo_phase_control.png 
  17167   Fri Sep 30 20:18:55 2022 PacoUpdateBHDLO phase noise with different actuation points[Paco, Koji]

We took lo phase noise spectra
actuating on the for different optics-- LO1,
 BHDC_asd_actuation_point.png 
  16572   Tue Jan 11 12:19:12 2022 AnchalSummaryBHDLO1 Input Matrix Diagonalization performed.The frree swinging test was successful.
I ran the input matrix diagonalization code
(scripts/SUS/InMAtCalc/sus_diagonalization.py)
 LO1_SUS_InpMat_Diagnolization.pdfLO1_FreeSwingData_PeakFitting.pdf 
  16919   Wed Jun 15 15:45:37 2022 yutaUpdateSUSLO1 LLCOIL now working, it was loose connectionWe tracked the issue of LO1 LLCOIL not
actuating LO1, and found that the DB9 cable
from the coil driver to the sat amp was loose.
 Measurement.JPGBAD.JPGScreenshot_2022-06-15_15-59-05.png 
  17133   Tue Sep 6 17:39:40 2022 PacoUpdateSUSLO1 LO2 AS1 AS4 damping loop step responsesI tuned the local damping gains for LO1,
LO2, AS1, and AS4 by looking at step responses
in the DOF basis (i.e. POS, PIT, YAW, and
 LO1_Step_Response_Test_2022-09-06_17-19.pdfLO2_Step_Response_Test_2022-09-06_17-30.pdfAS1_Step_Response_Test_2022-09-06_17-53.pdfAS4_Step_Response_Test_2022-09-06_18-16.pdf 
  16562   Mon Jan 10 14:52:51 2022 AnchalSummaryBHDLO1 OSEMs roughly calibrated and noise measuredI used the open light level output of 908
for ITMX side OSEM from 40m/16549
to roughly calibrate cts2um filter module
 LO1_vs_ETMX_OSEM_Spectrum_LF_x30_Gain.pdfLO1_vs_ETMX_OSEM_Spectrum_HF_x30_Gain.pdf 
  16567   Mon Jan 10 18:36:41 2022 AnchalSummaryBHDLO1 free swinging test set to triggerLO1 is set to go through a free swinging
test at 1 am tonight. We have used this script
(scripts/SUS/InMatCalc/freeSwing.py) reliably
  
  16851   Fri May 13 14:26:00 2022 JCUpdateAlignmentLO2 Beam[Yehonathan, JC]

Yehonathan and I attempted to align
the LO2 beam today through the BS chamber
  
  16918   Wed Jun 15 15:07:07 2022 KojiUpdateSUSLO2 SUS stuck fixedI checked the state of the LO2 suspension.
I found that the coil driver Enable
Mon was all red.
 Screenshot_2022-06-15_15-00-22.pngScreenshot_2022-06-15_15-00-40.png 
  16913   Tue Jun 14 18:45:43 2022 AnchalUpdateSUSLO2 lower magnets are stuck in coil, won't come off[Anchal, Yuta]

In the weekend, I ran a free swing
test on all optics. During this test, LO2
  
  2411   Mon Dec 14 13:08:33 2009 KojiUpdateTreasureLOCKSTARSGood job guys. What I did was
saying "I don't know", "Maybe",
  
  2413   Mon Dec 14 14:16:14 2009 AlbertoUpdateTreasureLOCKSTARS


   
        
            
  
  5661   Thu Oct 13 20:25:32 2011 KatrinUpdateGreen LockingLPF transfer function YARMIt is a 4th order filter with
cut of frequency of 120 kHz.
 
 designLPF.pngLC_LPF.TIF 
  7076   Thu Aug 2 03:06:57 2012 SashaUpdateSimulationsLS Plant (LSP) is officially ONLINEMy ls plant compiled!! The
RCG code can now be found in
 Screenshot-1.png 
  4689   Wed May 11 13:54:32 2011 steveUpdateLSCLSC power suppliesAux- rack _1Y2 is just behind 1Y3 
It contains Kepco Analoge DC power supplies
for +- 5, 15 and 24V
 P1070679.JPG 
  4523   Thu Apr 14 01:03:43 2011 KojiUpdateLSCLSC Campaign ~ StatusTarget:
To lock the Michelson with the new RF/LSC

Status
  
  5210   Fri Aug 12 16:42:51 2011 YoichiConfigurationLSCLSC Feed Forward CompensatorI've been working on adding feed forward (FF)
paths to our LSC code.
So far, I've made a basic feed forward functionality
 FFCinLSC.pngFFC.png 
  11445   Fri Jul 24 20:32:15 2015 ericqUpdateElectronicsLSC LO distribution box power button replaced As happened with the RF distribution box
in the IOO rack a while back, the shiny blue
power button in the LSC LO distribution box
 2015-07-24_15.43.56.jpg2015-07-24_16.57.19.jpg 
  5473   Tue Sep 20 02:21:10 2011 KojiUpdateLSCLSC MEDM screen cleaning upI have made some cleaning up of the LSC-related
MEDM screens.
- LSC overview screen: ADC OVFL and
  
  10390   Thu Aug 14 18:31:45 2014 ericqUpdateLSCLSC Modeling Update Based on the game plan, I have created
a slew of updated pretty plots about our
signals and loops. 
 7x 
  4982   Mon Jul 18 14:39:53 2011 JenneUpdateComputersLSC PD chans acquiredThere's too much tromping around, so I'm
not going to actually measure PRC length
right now, but I did set some channels to
  
  4951   Thu Jul 7 02:23:59 2011 JenneSummaryLSCLSC Whitening Filters have been fitI have fit all of the LSC whitening filters
using vectfit4.m
All the data is in my folder ..../users/jenne/LSC_WhiteningTest_29June2011/
 AS55Q.png 
  4955   Thu Jul 7 15:34:44 2011 JenneSummaryLSCLSC Whitening Filters have been fit


   
        
            
  
  11607   Wed Sep 16 23:07:06 2015 ranaUpdateElectronicsLSC Whitening board: LP filters added, pictures takenI added the 0.1 uF and 47 nF caps
that I mentioned so that we can now bypass
the AA filters for these channels. (mistakenly
 20150916_221210.jpgout.pdf 
  9509   Sat Dec 21 01:54:04 2013 KojiConfigurationLSCLSC Whitening for the DCPDs/CM servo replacedThe previous LSC whitening filters for
the DCPDs were in an unknown state (although
the transfer functions were actually measured
  
  9136   Tue Sep 17 18:44:29 2013 MasayukiUpdateLSCLSC calibration screenI update the LSC calibration screen. This
screen is for real time calibration of each
DOF with using error signal and control signal.
 calibration_screen.png 
  9149   Fri Sep 20 22:49:10 2013 MasayukiUpdateLSCLSC calibration screen

    

       
            
 plot.pdf 
  9158   Wed Sep 25 08:11:01 2013 MasayukiSummaryLSCLSC calibration screen 
  
 plot.pdfScreenshot.pngScreenshot-1.pngfringe.pdf 
  9169   Fri Sep 27 13:55:11 2013 MasayukiUpdateLSCLSC calibration screen  I added the DAQ channel to
all output of calibration servo. The name
of channels are C1CAL_(plant name)_W_OUT_DQ.
  
  9172   Fri Sep 27 21:01:50 2013 MasayukiUpdateLSCLSC calibration screen 
 I fixed the XARM and YARM real
time calibration servo.
  
  9174   Mon Sep 30 11:33:15 2013 ranaUpdateLSCLSC calibration screen

    

       
            
  
  381   Fri Mar 14 15:52:07 2008 robConfigurationLSCLSC code change
I've edited the LSC code to send different
signals to the ASS box.  Now, instead of
  
  386   Thu Mar 20 16:06:27 2008 robConfigurationLSCLSC code change
I changed the LSC code again.  I noticed
that when turning off the LSC (e.g., going
  
  1457   Tue Apr 7 21:39:57 2009 YoichiConfigurationComputersLSC code recompiled with a fix for denormalization problemThis is not my work but I will put it for
the record.
  
  1460   Wed Apr 8 18:18:33 2009 ranaConfigurationComputersLSC code recompiled with a fix for denormalization problemBelow is the link to the anti-denormalization
technique that Rolf and Alex implemented
at the sites,
  
  3995   Tue Nov 30 12:25:08 2010 josephbUpdateCDSLSC computer to chassis cable deadProblem:
We
seemed to have a broken fiber link for use
  
  9312   Wed Oct 30 00:02:25 2013 JenneUpdateLSCLSC demod boards need some thoughtAs we are meditating on things to look
at for PRMI + 2 arms, Rana brought up the
question of the demod board situation. 
  
  9316   Wed Oct 30 03:33:17 2013 RanaUpdateLSCLSC demod boards need some thought 
 
 0309.png 
  14313   Wed Nov 21 09:59:26 2018 gautamUpdateLSCLSC feedforward block diagramAttachment
#1 is a block diagram depicting
the pathway by which the vertex DOF control
 IMG_7173.JPG 
  14326   Fri Nov 30 19:37:47 2018 gautamUpdateLSCLSC feedforward block diagramI wanted to set up an RTCDS model to understand
this problem better. Attachment #1 is the
simulink diagram of the signal flow. The
 LSC_FF_tester.pngScreenshot_from_2018-11-30_19-41-07.pngScreenshot_from_2018-12-10_15-31-23.pngSimLSC.png 
  8623   Thu May 23 00:49:13 2013 JenneUpdateLSCLSC filters loaded

    

       
            
  
  8422   Mon Apr 8 10:19:46 2013 JenneUpdatePSLLSC left enabled 
 Note: The TRY PD isn't installed
and normalized properly yet, so the IFO OVERVIEW
  
  5495   Wed Sep 21 02:49:39 2011 KeikoSummaryLSCLSC matricesI created 3 kinds of LSC matrices, PRMI condition
with carrier resonant in PRC, PRMI condition
  
  10904   Thu Jan 15 14:28:14 2015 JenneUpdateLSCLSC model change ideaSomething that kind of drives me crazy
with our current LSC model setup is that
I can't make "finished" error
 SwitchableErrorSignalProposal_Jan2015.pdf 
  10910   Fri Jan 16 03:31:35 2015 JenneUpdateLSCLSC model change implementedOkay, it has taken me almost exactly 12
hours (with a dinner break), but I have implemented
this change.
 LSCorig_15Jan2015.pngLSCpost_15Jan2015.png 
  10914   Fri Jan 16 18:46:15 2015 KojiUpdateLSCLSC model change implementedWas the screen modified directly on LSC_OVERVIEW.adl?
Even if so, that's OK. I'll
incorporate the change to the screen making
  
  10915   Fri Jan 16 20:01:32 2015 JenneUpdateLSCLSC model change implementedNope, I used the script.

Yesterday's changes were mostly
to the generateLSCscreen/C1LSC_OVERVIEW_INPUT_MATRIX.adl
  
  10923   Tue Jan 20 15:09:01 2015 JenneUpdateLSCLSC model change implemented 




  
  9820   Thu Apr 17 01:01:02 2014 JenneUpdateLSCLSC model modificationsLast night, EricQ and I were concerned
that we might need some CARM UGF servoing,
so I added a UGF servo block, copied from
  
  9766   Mon Mar 31 13:26:23 2014 manasaUpdateLSCLSC model modifiedI have included Yarm CESAR to the LSC model.
It was just a copy paste of the Xarm CESAR.
Since we are now meditating about implementing
  
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