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ID Date Author Type Category Subjectup Text Attachments
  15030   Fri Nov 15 12:16:48 2019 gautamUpdatePEMFollow-up on seismometer discussionAttachment
#1 is a spectrogram
 BS_ZspecGram.pdf.zip 
  15032   Mon Nov 18 14:32:53 2019 gautamUpdatePEMFollow-up on seismometer discussionThe nightly seismic activity enhancement
continued during the weekend. It always shows
up around 10pm local time, persists for ~1
  
  15036   Tue Nov 19 21:53:57 2019 gautamUpdatePEMFollow-up on seismometer discussionThe shaking started earlier today than
yesterday, at ~9pm local time.

While the IFO is shaking, I thought
 seisxSpec.pdf 
  15417   Fri Jun 19 14:03:50 2020 JordanUpdateVACForepump Tip Seal ReplacementTip Seals were replaced on the forepumps
for TP2 and TP3, and both are ready to be
installed back onto the forelines.
  
  7348   Thu Sep 6 10:57:27 2012 JenneUpdateGeneralForgot to turn green refl pd back on

    

       
            
  
  5793   Thu Nov 3 13:00:52 2011 JenneUpdatePhotosFormatting of MEDM screen names

    

       
            
  
  6041   Tue Nov 29 18:31:40 2011 DenUpdatedigital noiseFoton error In the previous elog we've compared
Matlab and Foton SOS representations using
low-order filter. Now we move on to high
  
  6061   Thu Dec 1 18:30:39 2011 Vladimir, DenUpdatedigital noiseFoton errorFoton Matlab Error 
   
We investigated
some more the discrepancy between Matlab
  
  6062   Fri Dec 2 17:43:46 2011 ranaUpdatedigital noiseFoton errorIt would be useful to see some plots so
we could figure out exactly what magnitude
and phase error correspond to "gross"
  
  15287   Tue Mar 31 09:39:41 2020 gautamUpdateCDSFoton for shaped noise injectionsI'd like to re-measure the transfer
function from driving MC2 position to the
MC_L_DQ channel (for feedforward purposes).
  
  15288   Tue Mar 31 23:35:50 2020 ranaUpdateCDSFoton for shaped noise injectionsdo you really mean awggui cannot make shaped
noise injections via its foton text box ?
That has always worked for me in the past.
  
  15289   Tue Mar 31 23:54:57 2020 gautamUpdateCDSFoton for shaped noise injectionsThe problem is that foton does not inherit
the model sample rate when launched from
DTT/awggui. This is likely some shared/linked/dynamic
  
  3659   Wed Oct 6 12:00:23 2010 josephb, yuta, kiwamuUpdateCDSFound and fixed filter sampling rate problem with suspensionsWhile we looking using dtt and going over
the basics of its operation, we discovered
that the filter sample rates for the suspensions
  
  14500   Fri Mar 29 11:43:15 2019 JonUpdateUpgradeFound c1susaux database bugI found the current bias output channels,
C1:SUS-<OPTIC>_<DOF>BiasAdj,
were all pointed at C1:SUS-<OPTIC>_
  
  8653   Thu May 30 01:02:41 2013 ManasaUpdateGreen LockingFound it!X green beat note
found!
 IMG_0598.JPGIMG_0599.JPG 
  4980   Sun Jul 17 18:23:23 2011 JenneUpdatePSLFound the PMC unlockedIt was unlocked since ~4:30am.  No
idea why.  It's relocked so I can try
round N of measuring the PRC length.
 PMCunlocked_17July2011.png 
  3755   Thu Oct 21 18:45:50 2010 KojiUpdatePSLFound the beat at 1064nm[Koji Suresh]
We found the beat at 1064nm. T(PSL)=26.59deg,
  
  3756   Thu Oct 21 19:10:39 2010 AidanUpdatePSLFound the beat at 1064nm    
  3759   Fri Oct 22 01:23:13 2010 KojiUpdatePSLFound the beat at 1064nm[Koji / Suresh]
We worked on the 1064 beating a bit
more.
 101021_beat.pdf 
  8913   Tue Jul 23 21:32:43 2013 KojiUpdateIOOFound the cause of mysterious MC motionThesedays
we were continuously annoyed by unELOGGED
activities of the interferometer.
  
  8917   Wed Jul 24 14:26:24 2013 ranaUpdateIOOFound the cause of mysterious MC motionYes, this was not ELOG'd by me, unfortunately.
This was the MC tickler which I described
to some people in the control room when I
  
  9046   Wed Aug 21 19:26:19 2013 ranaUpdateIOOFound the cause of mysterious MC motion

    

       
            
  
  6160   Tue Jan 3 17:25:27 2012 KojiUpdatePSLFound the laser was offI found the PSL laser has been off for
four hours. Nobody seemed to know why.
I just turned it on and it is now
  
  6582   Mon Apr 30 13:00:50 2012 SureshUpdateCDSFrame Builder is downFrame builder is down.  PRM has tripped
its watch dogs.  I have reset the watch
dog on PRM and turned on the OPLEV. It has
  
  6583   Mon Apr 30 13:58:25 2012 JamieUpdateCDSFrame Builder is down

    

       
            
  
  6584   Mon Apr 30 16:56:05 2012 SureshUpdateCDSFrame Builder is down

    

       
            
  
  6586   Mon Apr 30 20:43:33 2012 SureshUpdateCDSFrame Builder is down

    

       
            
  
  6591   Tue May 1 08:18:50 2012 JamieUpdateCDSFrame Builder is down

    

       
            
  
  10600   Mon Oct 13 16:08:49 2014 JenneUpdateCDSFrame builder is madI think the daqd process isn't running
on the frame builder. 
 Daqd_problem_maybe.png 
  10601   Mon Oct 13 16:57:26 2014 KojiUpdateCDSFrame builder is madCPU load seems extremely high. You need
to reboot it, I think
controls@fb /proc 0$ cat loadavg
  
  10602   Mon Oct 13 17:09:38 2014 ericqUpdateCDSFrame builder is mad 
This CPU load may have been me deleting
some old frame files, to see if that would
  
  4510   Mon Apr 11 14:17:22 2011 josephb, jamieUpdateCDSFrame wiper script installed[Joe, Jamie, Alex]
Fixes:
I
asked Alex which cron to use (dcron? frcron?). 
  
  4109   Wed Jan 5 00:23:30 2011 ranaSummaryDAQFrameBuilder fails in a new waySince Leo was trying to demo his LIGO Data
Listener code, he noticed that there was
and NDS2 issue. The NDS2 guy (JZ) noticed
  
  4112   Wed Jan 5 16:00:11 2011 rana, alexSummaryDAQFrameBuilder fails in a new wayEmail from Alex:
  
  4115   Wed Jan 5 22:14:41 2011 ranaSummaryDAQFrameBuilder fails in a new wayJust a proof that the DAQ is working -
ran DTT on nodus from 3 hours ago.
 Screen_shot_2011-01-05_at_10.13.21_PM.png 
  14356   Thu Dec 13 22:56:28 2018 gautamUpdateCDSFrames[koji, gautam]

We looked into the /frames situation
a bit tonight. Here is a summary:
  
  4319   Thu Feb 17 23:41:46 2011 ranaFrogsDAQFrames Directory got the wrong name: Data unreachableDTT stopped working for recent data. An
'ls' in the frames/full/ directory reveals:
drwxr-xr-x 2 controls controls
  
  13356   Wed Oct 4 17:18:15 2017 gautamUpdateCDSFree DAC channels in c1lscThere are at least 5 free DAC channels
(4 if you discount the one channel from these
that I am hijacking) available in the 1Y2
  
  9159   Wed Sep 25 17:07:08 2013 ranaFrogsTreasureFree Green Mango Juice in fridge   aam_pana_recipe.jpg 
  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
 
  
  5347   Tue Sep 6 17:56:53 2011 JenneUpdateIOOFree Swing ITMY started


   
        
            
  
  2391   Thu Dec 10 17:13:36 2009 kiwamuUpdateSUSFree swiging spectra under the atmospheric pressureThe free swinging spectra of ITMs, ETMs,
BS, PRM and SRM were measured last night
in order to make sure that nothing wrong
 summary_freeswing.pdf 
  12523   Thu Sep 29 16:19:29 2016 LydiaUpdateSUSFree swing eigenmodes[Lydia, Teng]

Motivated by the strange pitch/yaw
coupling behavior we ran into while doing
 05.pngSUS_eigenmodes.png 
  836   Thu Aug 14 19:08:14 2008 YoichiConfigurationSUSFree swing measurement going onI started free swinging spectra measurement
of all the suspensions now Aug 14 19:05 (PDT).
The watch dogs are all shutdown. Please do
  
  9113   Thu Sep 5 15:18:41 2013 JenneUpdateLSCFree swinging DRMI power buildupsI have the DRMI free swinging right now,
since it's not really locking.  Looking
at these time series in the attached pdf,
 DRMI_free_swing_power_buildups.pdf 
  807   Thu Aug 7 10:07:13 2008 YoichiUpdateSUSFree swinging OSEM spectraLooks like there are more extra peaks in the
SRM than other optics.
Maybe because it is closer to the door ?
 FreeSwingSpectra.pdf 
  808   Thu Aug 7 10:27:59 2008 ranaUpdateSUSFree swinging OSEM spectraSometimes we see extra peaks in the OSEM spectra
coming from a beat between the regular eigenmodes.
This probably comes from the OSEM shadow
  
  2363   Tue Dec 8 03:53:49 2009 kiwamuUpdateSUSFree swinging spectra of ETMX In this night, I checked the free swinging
spectra of ETMX to make sure nothing wrong
with ETMX by the wiping.
 ETMX_air.png 
  7078   Thu Aug 2 11:09:52 2012 EricSummaryLSCFree-Swinging Michelson MeasurementsTo take the free swinging Michelson measurements
for the interferometer calibration Jamie
aligned the beam splitter with ITMX and ITMY.
 free_swing_MICH.png 
  5266   Fri Aug 19 01:15:22 2011 SureshUpdateSUSFreeSwing all opticsI ran "freeswing all" at Fri
Aug 19 01:09:28 PDT 2011 (997776583) 
and "opticshutdown"  as well.
  
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