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  40m Log, Page 168 of 339  Not logged in ELOG logo
ID Date Author Type Category Subject Text Attachments
  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.
  
  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 
  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.
  
  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. 
  
  8625   Thu May 23 10:20:33 2013 JamieUpdateSUSTurn off zero padding in DAC outputs

    

       
            
  
  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
  
  8623   Thu May 23 00:49:13 2013 JenneUpdateLSCLSC filters loaded

    

       
            
  
  8622   Thu May 23 00:16:32 2013 AnnalisaUpdate40m upgradingETMY - progress [Annalisa, Koji] 
 GREEN
 TransMonAndOplev.jpg 
  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
  
  8620   Wed May 22 18:24:19 2013 JenneUpdateSUSViolin mode survey

    

       
            
  
  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
  
  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
  
  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"
  
  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 
  8615   Wed May 22 11:35:06 2013 JamieSummaryCDSWeird DAC bit flipping at half integer output values

    

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

    

       
            
 ETMYoptable.jpgsurgtubclamps.jpgquickrelease.jpgreinforcbridge.jpg 
  8605   Tue May 21 16:23:06 2013 ManasaUpdateGeneral40MARS wireless network problem RETURNS

    

       
            
  
  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
  
  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
  
  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
  
  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.
  
  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 
  8599   Fri May 17 19:56:52 2013 KojiSummaryCDSWeird DAC bit flipping at half integer output valuesLet me make a complimentary comment on
this effect.
Because of this oscillation feature,
  
  8598   Fri May 17 18:58:58 2013 Jamie, KojiSummaryCDSWeird DAC bit flipping at half integer output valuesWhile looking at the DAC anti-imaging filters,
Koji noticed an odd feature of the DAC output:
 const.pdfsweep.pdf 
  8597   Fri May 17 18:24:04 2013 AnnalisaUpdate40m upgradingETMY - progressI aligned the green beam into the Faraday.
I needed an HWP to have the right polarization
for the light entering the Faraday itself.
  
  8596   Fri May 17 16:06:14 2013 ranaUpdate40m upgradingETMY op table disabled 
 TODO:

    We need to replace all
  
  8595   Fri May 17 15:38:51 2013 SteveUpdate40m upgradingETMY enclosure is on the way back 
 It  will arrive around 10 am Monday morning.
  
  8594   Fri May 17 00:32:32 2013 AnnalisaUpdate40m upgradingETMY - progress[Rana, Annalisa] 
 GREEN
 IMG_0536.JPG 
  8593   Thu May 16 23:48:39 2013 JenneUpdateLSCKiwamu's sensing matrix measurement script revivedKoji locked the PRMI for me, and I took
some data.  I haven't finished figuring
out what to do with it / writing a processing
  
  8592   Thu May 16 22:03:16 2013 KojiConfigurationLSCY Green BBPD returned to the PSL tableI borrowed the GTRY BBPD  for the
REFL165 trial before.
Now the PD is back on the PSL table.
  
  8591   Thu May 16 11:50:25 2013 KojiConfigurationElectronicsMeasurement and empirical models of the AI board TFsYesterday, I pulled out the AI board
for the PRM/BS SUSs. (After the investigation
it was restored)
 D000186AD_TF.pdfD000186AD_TF.zip 
  8590   Thu May 16 08:32:05 2013 SteveUpdate40m upgradingETMY op table disabled 
All ETMY optical table electronics-
lasers-pds turned off, disconnected in order
 linguaa.jpg 
  8589   Thu May 16 04:46:37 2013 JenneUpdateLSCKiwamu's sensing matrix measurement script revivedKiwamu had an old set of scripts for
measuring
the sensing matrices, but they were
  
  8588   Thu May 16 02:34:38 2013 ranaUpdateComputer Scripts / ProgramsAutoRUN GUI resurrectedWe talked about the thing that watches
the scripts for autolocking during the meeting
today.
 Autorun.png 
  8587   Thu May 16 01:41:31 2013 JenneSummaryIOOFSS gain settings set

    

       
            
  
  8586   Wed May 15 23:38:04 2013 ranaUpdateelogcategories trimmedI deleted a bunch of useless categories
from the 40m elogd.cfg file. IF you find
your category has been deleted, you can now
  
  8585   Wed May 15 22:47:11 2013 JamieSummaryCDSAccounting of ADC/DAC channel availability

    

       
            
  
  8584   Wed May 15 21:27:39 2013 AnnalisaUpdate40m UpgradingEndtable upgrade for auxiliary green laser : progress 
GREEN
I still have problems in maximizing
  
  8583   Wed May 15 19:32:04 2013 ranaSummaryCDSAccounting of ADC/DAC channel availability
    
  
  8582   Wed May 15 17:48:25 2013 JamieUpdateCDSmisc problems noticed in modelsI noticed a couple potential issues in
some of the models while I was investigating
the ADC/DAC situation:
  
  8581   Wed May 15 17:38:49 2013 JamieSummaryCDSAA/AI requirements

    

       
            
  
  8580   Wed May 15 17:17:05 2013 JamieSummaryCDSAccounting of ADC/DAC channel availabilityWe need ADC and DAC channels for a couple
of things:

    POP QPD: 3x ADC
  
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