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ID Dateup Author Type Category Subject Text Attachments
  8600   Mon May 20 17:49:36 2013 JenneUpdateLSCPRMI sensing matrix - not high quality dataJust so we have some numbers, I did a by-hand
analysis of the PRMI sensing matrix numbers
I posted here in the elog the other day. 
 PRMIsensMatQuickAnalysis.m.gz 
  8601   Mon May 20 18:47:47 2013 KojiUpdateLSCPRMI sensing matrix - not high quality dataFor now forget about the demodulation phase
and assume all of the ports are independent.
  
  8602   Mon May 20 18:50:22 2013 JenneUpdateLSCKiwamu's sensing matrix measurement script revivedSo that I don't have to do loop compensation
every time I measure a sensing matrix, I
have put (back) in notches into FM10 of all
  
  8603   Tue May 21 14:48:08 2013 JenneUpdateLSCPRMI sensing matrix - not high quality dataThe PRMI sensing matrix, as measured last
Thursday, in a more readable format:
EDIT: DON'T Look at this
  
  8604   Tue May 21 14:50:52 2013 Max HortonUpdate Importing New CodeThere was an issue with running the new
summary pages, because laldetchar was not
included (the website I used for instructions
  
  8605   Tue May 21 16:23:06 2013 ManasaUpdateGeneral40MARS wireless network problem RETURNS

    

       
            
  
  8606   Tue May 21 17:03:45 2013 SteveUpdateendtable upgradeenclosure tops are sealed

    

       
            
 ETMYoptable.jpgsurgtubclamps.jpgquickrelease.jpgreinforcbridge.jpg 
  8607   Tue May 21 18:18:23 2013 ManasaUpdateGreen LockingXend Green alignedX arm aligned to green.
Aligned the X arm to IR. 
Used steering mirrors to align the
  
  8608   Tue May 21 18:18:28 2013 JamieUpdateComputer Scripts / ProgramsnetGPIB stuff update/modernized/cleanedup/improvedI did a bunch of cleanup work on the netGPIB
stuff:

    Removed extensions from
  
  8609   Tue May 21 18:22:18 2013 JenneUpdateLSCSensing matrix scripts modified to include actuator calibrationThe PRMI sensing matrix scripts have been
modified to output a sensing matrix which
is calibrated into units of counts/meter.
  
  8610   Tue May 21 23:29:57 2013 ManasaUpdateGreen LockingXend Green alignedX-green and PSL green have been aligned
so that they interfere at the beat PD for
X. 
  
  8611   Wed May 22 00:08:19 2013 KojiUpdateLSCSensing matrix scripts modified to include actuator calibrationIt
was too embarassing to see that the actuation
frequency was set at the violin mode frequency
  
  8612   Wed May 22 00:42:13 2013 KojiSummarySUSviolin QWhile looking at the decay of the violin
mode of the PRM, I made a simple measurement
of the decay rate.
  
  8613   Wed May 22 11:09:33 2013 JamieSummaryCDSWeird DAC bit flipping at half integer output valuesAfter querying CDS folks about this issue,
I got some responses that indicated the problems
was likely limit-cycle oscillations due to
 nopad.pdf 
  8614   Wed May 22 11:21:28 2013 KojiSummaryCDSWeird DAC bit flipping at half integer output valuesIs this limit cycle caused by the residual
of the digital AI filtering at the half sampling
freq and that his the threshold?
  
  8615   Wed May 22 11:35:06 2013 JamieSummaryCDSWeird DAC bit flipping at half integer output values

    

       
            
  
  8616   Wed May 22 15:08:37 2013 KojiSummaryCDSWeird DAC bit flipping at half integer output valuesIt seems that the effect is from the (linear)
residual fluctuation of the digital AI filter
for the zero-padded signal.
 Screenshot.png 
  8617   Wed May 22 15:48:56 2013 JamieUpdateSUSTurn off zero padding in DAC outputsAfter the results of the analysis in the
#8598
thread, I have added the "no_zero_pad=1"
  
  8618   Wed May 22 17:29:34 2013 JenneUpdateASCQPD for POP ASC testedI fiddled around with the QPD that I'll
use to replace Koji's temporary razor blade
yaw sensor for detecting POP beam angular
  
  8619   Wed May 22 18:07:36 2013 JenneUpdateLSCKiwamu's sensing matrix measurement script revived 
 To avoid exciting at the PRM
violin mode frequency, I have changed all
  
  8620   Wed May 22 18:24:19 2013 JenneUpdateSUSViolin mode survey

    

       
            
  
  8621   Wed May 22 20:50:26 2013 JenneUpdateLSCSensing matrix scripts don't calculate correctlyI am trying to re-analyze the data that
Koji took last night.  
I think that my script is just pulling
  
  8622   Thu May 23 00:16:32 2013 AnnalisaUpdate40m upgradingETMY - progress [Annalisa, Koji] 
 GREEN
 TransMonAndOplev.jpg 
  8623   Thu May 23 00:49:13 2013 JenneUpdateLSCLSC filters loaded

    

       
            
  
  8624   Thu May 23 01:27:11 2013 ManasaSummaryLSCXarm beat note search continuesTowards finding the x-arm beat note:

The green would not lock to a maximum
  
  8625   Thu May 23 10:20:33 2013 JamieUpdateSUSTurn off zero padding in DAC outputs

    

       
            
  
  8626   Thu May 23 10:24:23 2013 JamieSummaryCDSc1scy model continues to run at the hairy edgec1scy, the controller model at  the Y END,
is still running very long, typically at
55/60 microseconds, or ~92% of it's cycle. 
  
  8627   Thu May 23 10:48:42 2013 ManasaUpdateIOOMC autolocker and MCWFS enabledSome strong seismic noise (not related
to any earthquakes - watchdogs are all green)
had got the MC unlocked this morning.
  
  8628   Thu May 23 12:02:48 2013 SteveUpdateendtable upgradeETMY - oplev Temporary oplev in place. The spot
on the qpd is still big. My two lens solution
did not work.
 ETMYopl.jpg 
  8629   Thu May 23 13:14:34 2013 KojiSummaryLSCXarm beat note search continuesWe should consider to hook up the temperature
monitors of the NPROs to the ADCs.
  
  8630   Thu May 23 14:45:08 2013 JenneUpdateLSCSensing matrix scripts calculations make more sense nowI think I have most of the magnitude issues
figured out now. 
First of all, the lockin outputs
 SensMat_JenneMeas_23May2013.pngSensMat_KojiMeas_23May2013.png 
  8631   Thu May 23 17:51:39 2013 KojiSummaryLSCMy usual locking procedureFor purpose of the automation and my record,
I summarized my locking procedure as a chart.
 PRMI_locking_procedure.pdf 
  8632   Thu May 23 19:09:15 2013 JenneUpdateLSCSensing matrix scripts modified to include actuator calibrationAfter fixing up my calculations in my scripts,
I have calculated the final PRMI sensing
matrix (as measured very close to the violin
 SensMat_21May2013.png 
  8633   Thu May 23 20:39:50 2013 JenneUpdateLSCPRMI sensing matrix measured at 580.1HzI locked the PRMI and remeasured the sensing
matrix, this time at 580Hz.  The excellent
news here is that the matrix looks quite
 SensMat_23May2013.png 
  8634   Thu May 23 20:58:49 2013 JenneUpdatePEMPRM, ITMX optics tripped, restored
M5.7
- 11km WNW of Greenville, California
Time2013-05-23
  
  8635   Thu May 23 21:45:51 2013 JenneUpdateLSCSensing matrix scripts now check for locklossA few more small mods to the sensing matrix
script.  Now the script saves the data
after each measurement, so that in case you
  
  8636   Thu May 23 22:13:12 2013 KojiUpdateLSCPRMI sensing matrix measured at 580.1HzCan you clarify the definition of the phase
"0deg" of your plot?
Is "I" the definition of
  
  8637   Fri May 24 02:12:50 2013 AnnalisaUpdate40m upgradingETMY - Mode Matching for green 
 Mode
Matching calculation for green beam - Yarm
 ModeMatchingGreen.jpgModeMatchingGreenZoom.jpgXYpath.jpg 
  8638   Fri May 24 11:38:00 2013 KojiUpdate40m upgradingETMY - Mode Matching for greenI got confused. Is the mode calculation
in the cavity correct? 
Are you sure the wavelength in the
  
  8639   Fri May 24 12:50:25 2013 AnnalisaUpdate40m upgradingETMY - Mode Matching for green

    

       
            
  
  8640   Fri May 24 13:41:19 2013 JenneUpdateLSCPRMI sensing matrix measured at 580.1Hz"0 degrees" is 0 degrees of demod
phase.  I have now added the PD demod
phases to the plot:
 SensMat_23May2013_withIQ.png 
  8641   Fri May 24 14:01:59 2013 KojiUpdateLSCPRMI sensing matrix measured at 580.1HzIt's hard to believe but is AS55Q really
almost insensitive to MICH?
Well, anyway, now it is the time
  
  8642   Fri May 24 14:40:22 2013 JenneUpdateLSCPRMI sensing matrix: now what?

    

       
            
  
  8643   Fri May 24 14:44:34 2013 JenneUpdateGeneralRossa freezes all the timeI am getting tired of having to restart
Rossa all the time.  She freezes almost
once per day now.  Jamie has looked
  
  8644   Fri May 24 22:18:33 2013 JenneUpdateLSCPRMI sensing matrix: Got it!Okay, I think I am finished with the sensing
matrix scripts!  
I had the syntax for atan2() wrong,
 SensMat_23May2013_withIQ_andCorrectPhases.png 
  8645   Sat May 25 02:03:48 2013 AnnalisaUpdate40m upgradingETMY - Mode Matching for green - new calculation Mode
matching calculation for green - Yarm
I
 ModeMatchingGreenNEW.jpgModeMatchingGreenZoomNEW.jpgXYpathNEW.jpgphoto1.JPGphoto2.JPG 
  8646   Mon May 27 21:38:53 2013 AnnalisaUpdate40m upgradingETMY - Beam Dumps 
I put many razor dumps along the
IR/green path. The rejected beam from the
  
  8647   Tue May 28 11:11:37 2013 ManasaUpdateIOOMC aligned[Jenne, Manasa]
Fixed crappy alignment of MC by moving
MC mirrors. MC REFL PD measured 0.5 after
 MC_0528.png 
  8648   Tue May 28 14:52:56 2013 JenneUpdateLSCPRMI sensing matrix: Got it!Just so we have it, here is the re-analysis
with the correct plot and phases for the
May 21st data, taken near the violin mode:
 SensMat_21May2013_withIQ_andCorrectPhases.png 
  8649   Tue May 28 17:00:50 2013 JenneUpdateASCProposed POP path, to be installed this eveningI have mounted 2 2" G&H high reflective
mirrors, to be used in the new POP path. 
Manasa and Annalisa are doing green things
 CurrentPOPpath.pdfProposedPOPpath.pdf 
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