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  40m Log, Page 292 of 346  Not logged in ELOG logo
ID Date Author Type Category Subjectup Text Attachments
  4606   Tue May 3 05:32:04 2011 kiwamuUpdateLSCdaytime tasksDaytime tasks : 
 - PRM & BS oplev (Steve)
  
  4607   Tue May 3 10:21:25 2011 KojiUpdateLSCdaytime tasksI think the installation of the PD DC
signals are quite important. What to do
1) Connect the DC signals to the right
  
  4610   Tue May 3 11:49:03 2011 KojiUpdateLSCdaytime tasksDone. C1:PSL-PMC_PMCTRANSPD was improved
from ~0.75 to 0.87.

  
  6412   Wed Mar 14 05:26:39 2012 interferomter tack forceUpdateGeneraldaytime tasksThe
following tasks need to be done in the daytime
tomorrow.
  
  6416   Wed Mar 14 14:09:01 2012 interferomter tack forceUpdateGeneraldaytime tasks

    
        
  
  4142   Wed Jan 12 02:41:19 2011 kiwamuUpdateGeneraldaytime tasks for tomorrow[Rana, Kiwamu]
Here
is the list for the daytime tasks of tomorrow,
  
  14492   Thu Mar 21 18:09:36 2019 KojiUpdateCDSdb file preparation for acromag c1susauxI have updated the google doc spreadsheet
to indicate the required action for the new
dbfile
 Screen_Shot_2019-03-21_at_18.06.53.png 
  14462   Fri Feb 15 21:15:42 2019 gautamUpdateVACdd backup of c1vac made
Connected one of the solid-state
drives to c1vac. It was /dev/sdb.
Formatted
the drive using sudo mkfs -t
  
  9937   Fri May 9 11:23:11 2014 steveUpdateGreen Lockingdecreased X green light power Green light power decreased from 3 mW to
1 mW at the ETMX-ISCT shutter. More later.
  
  6300   Tue Feb 21 16:10:29 2012 kiwamuUpdateIOOdegradation in input PZT1PZT1,
the one with Koji's custom mid-HV driver
(#5447
  
  5268   Fri Aug 19 09:14:56 2011 steveUpdateIOOdegrading laser power at atmLight into the MC is 20 mW at atm, MC_Transmitted
~10 MW = 400 count
The PMC_T is OK but something else
 power@atm.jpg 
  6120   Wed Dec 14 14:40:53 2011 steveUpdateGreen Lockingdelay line bnc cable specsThe existingly used used Pasternack Enterprices
RG58 C/U cable lenght ~ 140 ft and the specs
are here at Atm1
 rg58cu.jpgRG58-P.pdf 
  15174   Wed Jan 29 12:29:33 2020 shrutiUpdateGeneraldelay line frequency discriminator for PM Today I began working on a TF measurement
based on the delay line frequency discriminator
setup in elog
 20200128.pngIMG_BB01C068495A-1.jpeg 
  15177   Thu Jan 30 15:24:10 2020 ?UpdateGeneraldelay line frequency discriminator for PMyes, its fine to use this
with a level 3 or level 7 mixer; let's
  
  15180   Thu Jan 30 22:02:42 2020 shrutiUpdateGeneraldelay line frequency discriminator for PMI could not find any level 3 mixers, but
by adjusting the beat frequency the power
in each of the delay line channels rose to
 Figure_2.png 
  6199   Sun Jan 15 10:28:02 2012 DenUpdateAdaptive FilteringdelaysWe can account for delays in the oaf system
by compensating it in the adaptive path of
the filter. But using only this procedure
 2048_tau.png2048_delays.png 
  4554   Thu Apr 21 21:24:41 2011 kiwamuUpdateLSCdemod board : new 90 deg splitterA
new 90 degree splitter, PSCQ-2-51W, has arrived
today and I installed it on a demod board
 DSC_2949_ss.jpgDSC_2951.JPGDSC_2952_ss.jpg 
  4555   Thu Apr 21 21:46:22 2011 kiwamuUpdateLSCdemod board : new 90 deg splitterA less
LO power dependence on the relative phase
 relativephase.png 
  4560   Fri Apr 22 11:08:50 2011 kiwamuUpdateLSCdemod board AS11 : amplitude imbalanceAmplitude
imbalance between I and Q in a demod board,
 IQamplitude.png 
  4538   Mon Apr 18 13:05:57 2011 kiwamuSummaryLSCdemod board modificationHere
is the idea how we upgrade the demodulation
boards. 
 demod_board.png 
  277   Sun Jan 27 13:13:21 2008 tobinMetaphysicsGeneraldepartureIt's been grand.  Thanks for having me!

GWAVES IN '08!
  
  2525   Tue Jan 19 02:39:57 2010 kiwamuUpdateElectronicsdesign complete --- triple resonant circuit for EOM ---The design
of the triple resonant circuit has been fixed.
 realistic.pngscaling.png 
  2528   Tue Jan 19 03:20:28 2010 KojiUpdateElectronicsdesign complete --- triple resonant circuit for EOM ---First I was confused, but now I think I
understood.
My confusion: 
  
  6817   Thu Jun 14 04:53:39 2012 yutaSummaryGreen Lockingdesigning ALS loop for mode scan[[Requirement]]
 Arm cavity FWHM for IR is 
 ALSloop.pngALSopenloop.pngyarmlength.png 
  3647   Tue Oct 5 11:42:20 2010 kiwamuSummaryGreen Lockingdeveloping green locking plant With a help from Joe, I made a diagram
of the simulated plant for green locking
in order to get better understanding and
 green_sm3.png 
  13290   Mon Sep 4 18:18:29 2017 ranaUpdateLSCdewhite switching: FOTON settingsnot immediately necessary, since you have
already got it sort of working, but one of
these days we should optimize this for real.
  
  5765   Sun Oct 30 23:01:51 2011 ZachUpdateSUSdiagAllSUS -- automated input matrix generatorI finally got around to wrapping up   
  3844   Tue Nov 2 11:34:53 2010 josephb, alexUpdateCDSdiagconfd running, excitations back in dttProblem:
Diagnostic test tools was starting
with errors.
  
  2146   Mon Oct 26 19:12:50 2009 kiwamuUpdateLSCdiagnostic script for LSC timingThe diagnostic script I've written is available
in the 'caltech/users/kiwamu/work/20091026_OMC-LSC-diag/src'.
To run the script, you can just execute
  
  4026   Wed Dec 8 12:47:18 2010 kiwamuUpdateSUSdiagonalisation of ITMX input matrixThe input
matrix of ITMX has been diagonalized.
  
  7511   Tue Oct 9 17:16:14 2012 DenUpdateSUSdiagonalizationI went inside to align the beam on WFS
and noticed that oscillations in yaw are
~10 times stronger then in pitch. I've plot
 mc123_rms.pdfmc1_diag.pdfmc123_rms.pdf 
  7512   Tue Oct 9 17:33:37 2012 jamieUpdateSUSdiagonalization

    

       
            
  
  7525   Thu Oct 11 00:28:30 2012 DenUpdateSUSdiagonalizationI've written MC123 input matrixes to the
front-end.
MC1 diagonalization is poor, better
 mc1_new.pdfmc123_new.pdf 
  7526   Thu Oct 11 01:30:11 2012 DenUpdateSUSdiagonalization

    

       
            
 mc1_coils.pdf 
  7532   Thu Oct 11 14:40:20 2012 DenUpdateSUSdiagonalization

    

       
            
 mc1.pdf 
  3912   Sat Nov 13 15:53:05 2010 yutaUpdateCDSdiagonalization of MC input matrixMotivation:
  MC is aligned from the A2L
measurement, but to do the beam centering
 MCspectraNov09.pngMCspectraNov13.pngMC1spetra_wrongmatrix.png 
  4718   Sun May 15 03:58:19 2011 ranaUpdateCDSdiagonalization of MC input matrixThere has been some input matrix diagonalization
in the past by
Yuta and Kiwamu, but I find the automation
 mc1.png 
  4746   Thu May 19 00:23:44 2011 ranaUpdateCDSdiagonalization of MC input matrix I've
moved all of my SOS peak fitting stuff into
  
  4886   Sun Jun 26 16:17:22 2011 ranaUpdateCDSdiagonalization of MC input matrixI have updated the scripts/SUS/peakFit/  inMatDiag.pdf 
  5136   Mon Aug 8 00:12:58 2011 ranaUpdateCDSdiagonalization of MC input matrixI've finally   
  5137   Mon Aug 8 00:58:26 2011 ranaUpdateCDSdiagonalization of MC input matrixBesides the purpose of correctly tuning
the suspensions, my hidden goal in the input
matrix diagonalization has been to figure
 null.png 
  6413   Wed Mar 14 10:06:26 2012 steveUpdateGreen Lockingdichroic mirror quotesDichroic
mirror quotes are in the wiki.
ATF is pricy.
  
  6435   Thu Mar 22 08:14:21 2012 steveUpdateGreen Lockingdichroic mirror quotes with large wedge

    

       
            
  
  2296   Thu Nov 19 08:53:12 2009 peteFrogsEnvironmentdiesel fumes Instead of doing RCG stuff, I went
to Millikan to work on data analysis as I
couldn't stand the fumes from the construction.
  
  2377   Thu Dec 10 08:43:25 2009 steveFrogsEnvironmentdiesel fumes are less


   
        
            
 P1050817.JPG 
  4385   Tue Mar 8 15:20:31 2011 kiwamuUpdateGreen Lockingdifferential noise on Mar.8th   differential_noise20110308.png 
  4442   Fri Mar 25 01:27:29 2011 mevansFrogsGreen Lockingdigital frequency countingToday we tried the Schmitt trigger DFD,
and while it works it does not improve the
noise performance.  At least part of
  
  4444   Fri Mar 25 11:16:19 2011 josephbFrogsGreen Lockingdigital frequency countingI modified
the c1gfd.mdl simulink model.  I made
a backup as c1gfd_20110325.mdl. 
 C1GFD.png 
  6064   Sat Dec 3 16:55:52 2011 DenUpdateIOOdigital noise in MCI looked once again to the local OSEM sensors
and MC length signals. Then I replaced 1e-20
to 1e-50 in the if-statement of the iir_filter
 psd_sensors.jpgcoh_sensors.jpgpsd_mcl.jpgcoh_mcl.jpg 
  13673   Thu Mar 8 19:38:37 2018 gautamUpdateALSdigital unwhitening of daughter boardI made a LISO fit of the measured TF of
the daughter board, so that I can digitally
invert the daughter board whitening. Results
 TFfit.pdf 
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