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ID Date Authorup Type Category Subject Text Attachments
  5267   Fri Aug 19 01:46:06 2011 SureshUpdateGeneralIFO alignment[Keiko, Jamie, Kiwamu, Anamaria,
We followed the procedure that we
laid-out in our elog
  
  5277   Mon Aug 22 16:28:44 2011 SureshUpdateGeneralSRM tower shifted on Friday[Kiwamu,
Suresh]   This is a belated elog
entry from last Friday night + Saturday morning! 
  
  5283   Tue Aug 23 02:03:04 2011 SureshUpdateIOOMC realigned and spot positions recenteredAfter the MC1 and MC3 OSEMs were 
repositioned 
MC had to be realigned and the beam spots
 mcdecenter20110822.png 
  5305   Thu Aug 25 17:57:35 2011 SureshUpdateSUSBroken UL magnet on ITMX
  
  5313   Sat Aug 27 20:38:17 2011 SureshUpdateIOOLight is back on WFS[Valera, Suresh]
   We wanted to continue
the work with WFS servo loops.  As the
  
  5315   Sun Aug 28 22:49:40 2011 SureshUpdateCDSfb downI recompiled c1ioo after making some changes
and restarted fb. (about 9:45 - 10PM PDT) 
But it failed to restart.  It responds
  
  5321   Mon Aug 29 19:14:31 2011 SureshUpdateIOOWFS phase adjustments[Valera, Suresh]
1) To see if there are significant
dark-offsets on the WFS sensors we closed
 Screenshot-1.png 
  5327   Tue Aug 30 17:31:55 2011 SureshUpdateIOOC1IOO model reverted and fb restartedI reverted
the C1IOO model to the last working version
and restarted the fb at this time..Tue Aug
  
  5344   Tue Sep 6 17:43:01 2011 SureshUpdateIOOFree Swing ITMY startedFree swing of ITMY started at
Tue Sep  6 17:41:43 PDT 2011
 
  
  5351   Wed Sep 7 00:01:23 2011 SureshUpdateIOOITMY chamber ready for heavy doors[Jenne, Suresh]
We did the following things in the
ITMY chamber today:
  
  5362   Wed Sep 7 20:44:11 2011 SureshUpdateelogrestartedElog crashed / dormant for long time. 
A look at the log file indicated that it
was busy generating png thumbnails for pdf
  
  5390   Mon Sep 12 23:45:14 2011 SureshConfigurationComputer Scripts / ProgramsStripTool does not scale properly on PianosaWhen I run StripTool on Pianosa, I get
the following message
==== StripTool Xt Warning Handler
  
  5393   Tue Sep 13 09:16:00 2011 SureshUpdateIOOMC spots recentered and input beam alignedThe shift of MC2 which Rana noted
caused the beam spots on the MC mirrors to
decenter. I used the mcassUp and mcassOn
 mcdecenter20110912_1.pngmcdecenter20110912_2.png 
  5396   Tue Sep 13 19:04:58 2011 SureshUpdateComputer Scripts / ProgramsRestarted Frame builder several times while compiling c1ioo, c1mcs and c1rfmI restarted the frame builder at the following
times
 
  
  5397   Tue Sep 13 19:12:53 2011 SureshUpdateComputer Scripts / Programschanges to the c1ioo, c1mcs and c1rfm[Suresh, Jamie]
The new versions of these three models
have been committed to the svn.  I copy
  
  5416   Thu Sep 15 11:37:24 2011 SureshUpdateComputer Scripts / Programsfb restarted at Thu Sep 15 11:30:30 PDT 2011I changed a filter bank name (C1IOO-WFS1_PIT)
in c1ioo model reverting it to its earlier
name.  Had to restart c1ioo model and
  
  5433   Fri Sep 16 14:43:43 2011 SureshUpdateComputer Scripts / ProgramsChanged c1ioo model and restarted fbI had to change the c1ioo model and restart
the fb since the paths allowing us to select
various signals to demodulate using the lockins
  
  5490   Tue Sep 20 21:13:39 2011 SureshUpdateIOOMC aligned and PSL beam into MC readjustedThis morning after Kiwamu maximised the
PSL beam coupling into the MC we noticed
that the MC2 face camera showed the spot
  
  5505   Wed Sep 21 19:20:41 2011 SureshUpdateIOOPSL beam into MC was off in Pitch. Readjusted.I found the PSL beam into the MC off in
pitch by large amount.  I readusted
the PSL beam for optimal coupling.
  
  5524   Thu Sep 22 22:53:06 2011 SureshUpdateComputer Scripts / ProgramsActivated DAQ channels in C1IOO model and restared fbTo look at the WFS servo signals I was
using test points in the servo filter banks. 
This is not recommended for regular operation
  
  5526   Thu Sep 22 23:02:15 2011 SureshUpdateIOOno light on WFS2. Realigned input onto both WFSRana noticed that the sum on WFS2 was about
10 times smaller than that on WFS1. Though
the beam appeared centered on the DC QPD
  
  5527   Thu Sep 22 23:10:07 2011 SureshUpdateIOOproposed modifications to the C1IOO modelRana advised that we put in a lockin-output
matrix which will allow us to excite any
combination of MC mirrors so that we can
  
  5533   Fri Sep 23 18:00:54 2011 SureshUpdateIOOPSL beam realigned to MCI noticed that the beam centering on the
WFS had changed over night and the MC_TRANS_SUM
was about 40k counts.  When well aligned
 trend.png 
  5555   Tue Sep 27 09:47:52 2011 SureshUpdateAdaptive FilteringPlan for making MC_F


   
        
            
  
  5566   Wed Sep 28 15:33:58 2011 SureshUpdateComputer Scripts / Programsediting database files for medm screens and restarting the slow c1psl machineI changed the names on a switch(SW1) in
the C1:PSL-FSS screen.  To do this I
had to edit the psl.db database file in the
  
  5581   Fri Sep 30 03:36:19 2011 SureshUpdateComputer Scripts / ProgramsCIOO modified, but not yet compiledI have added a switch in series with the
WFS_GAIN. And I have also added a LKIN_OUT_MATRX
between the lockin-outputs and the MC suspensions. 
  
  5606   Mon Oct 3 20:02:59 2011 SureshUpdatePSLAM / PM ratio[Koji, Suresh]
In the previous measurement, the
PDA 255 had most probably saturated at DC,
  
  5614   Tue Oct 4 15:57:30 2011 SureshUpdateIOOMC Trans channels are digital 0
I thought this problem might be arising
because the MC2_TRANS QPD signals are not
being passed from the c1mcs to c1ioo models
  
  5615   Tue Oct 4 16:10:45 2011 SureshUpdateComputer Scripts / ProgramsMC was not dampingThe MC was not damping earlier this morning
around 11:45AM.  The reason was that
the INMATRIX on all the three MC1, 2 and
  
  5616   Tue Oct 4 16:58:45 2011 SureshUpdatePSLAM / PM ratioCorrection:        Koji noted that Mirko
actually reports a PM modulation index of
0.17 for the 11 MHz sideband (
  
  5632   Fri Oct 7 19:06:46 2011 SureshUpdateIOOMC spot positions: checked and corrected.Koji and Kiwamu had adjusted the MC beam
axis slightly such that we can couple the
MC output into the Y-arm without exceeding
  
  5635   Fri Oct 7 22:48:26 2011 SureshUpdateIOOMC2 Trans QPD spot size and incident power decreasedAfter centering the spot on the MC2, I
started to adjust the spot position on MC_TRANS_QPD
to center the beam on it.  I noticed
  
  5647   Tue Oct 11 00:59:55 2011 SureshUpdateIOOPreliminary locking of WFS loops[Kiwamu, Koji, Suresh]
After correcting several errors in
the WFS loops, we turned them on today and
 6x 
  5668   Sat Oct 15 04:53:41 2011 SureshUpdateIOOMC WFS Output Matrix determinationAfter we had a
rough idea of what the output matrix looks
like (see this elog),
 WFS1P_RespTo_MC1andMC2.pdfWFS1_IQphase20111015_1.pdfWFS2_IQphase20111015_1.pdfWFS1_IQphase20111015_2.pdfWFS2_IQphase20111015_2.pdf 
  5683   Mon Oct 17 23:56:34 2011 SureshUpdateIOOMC WFS Integrators switched on and WFS_MASTER screen updated[Rana, Suresh]
     To see if
the loops will stay locked when the Integrators
 WFS_MASTER_screenshot_20111017.png 
  5687   Tue Oct 18 20:50:19 2011 SureshUpdateIOOC1IOO and WFS associated screensIn keeping with the current protocol, 
I have started to move all the user-built
medm screens associated with C1IOO into the
  
  5689   Tue Oct 18 22:47:09 2011 SureshConfigurationIOOMC autolocker script edited to shutdown and restart WFS loops

    
        
  
  5696   Wed Oct 19 12:25:58 2011 SureshUpdate40m UpgradingActive Tiptilts from LLO moved to clean shelf along X armI have moved the active tip tilts that
we brought over from LLO to the Clean Bureau
along the X arm (closest to the ETMX). There
  
  5697   Wed Oct 19 13:45:11 2011 SureshUpdate40m UpgradingActive Tiptilts from LLO moved to clean shelf along X armI have moved the active tip tilts that
we brought over from LLO to the Clean Bureau
along the X arm (closest to the ETMX). There
  
  5706   Wed Oct 19 18:18:03 2011 SureshUpdateElectronicsStochMon : Filters installed
 PA190146.JPGPA190143.JPG 
  5716   Thu Oct 20 18:57:35 2011 SureshSummarySUSMC2 Misaligned 2:27PM on Wednesday

    

       
            
  
  5717   Fri Oct 21 02:36:44 2011 SureshSummarySUSMC2 Misaligned 2:27PM on Wednesday : MC Realigned


   
        
            
  
  5718   Fri Oct 21 02:57:38 2011 SureshSummarySUSMC2 Misaligned 2:27PM on Wednesday : cause traced


   
        
            
  
  5724   Fri Oct 21 15:49:35 2011 SureshUpdateIOOPMC input alignment improvedThe image on the PMCR camera was quite
assymetric and PMC output was at 80% ....
upon improving the alignment I managed to
  
  5725   Fri Oct 21 16:06:12 2011 SureshUpdateComputer Scripts / ProgramsMC input matrices empty againThe MC suspensions were not damping and
the reason was traced to the empty imput
matrices in the suspension controls. 
  
  5732   Tue Oct 25 01:14:15 2011 SureshUpdateIOOC1IOO model modified to include new WFS lockin structureA while back we faced the problem that
when we use several lockins to excite the
MC degrees of freedom, their relative phase
 c1ioo20111025.png 
  5733   Tue Oct 25 01:19:17 2011 SureshUpdateComputersfb restarted and c1ioo model committed to svnWhen I installed the new model I restarted
the fb between 1 and 1:30 AM PDT Oct 25,
2011
  
  5735   Tue Oct 25 16:24:58 2011 SureshUpdateIOOC1IOO model modified to include new WFS lockin structureI forgot to mention another change I made
to the C1IOO model.
The location of the WFS global
  
  5737   Tue Oct 25 18:50:22 2011 SureshUpdateIOOC1IOO model modified to include new WFS lockin structureSome small fixes to the c1ioo model.
1) I edited the WFS lockin modules
to make use of new
  
  5750   Fri Oct 28 02:41:18 2011 SureshMetaphysicselogelog unresponsive: restartedElog did not respond despite running the
/cvs/cds/caltech/elog/start-elog.csh 
script two times.  
  
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