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  40m Log, Page 294 of 344  Not logged in ELOG logo
ID Date Author Type Category Subjectup Text Attachments
  3066   Fri Jun 11 13:32:28 2010 KojiUpdateGreen Lockingend PDH with thermal feedbackGJ! 

  
  425   Fri Apr 18 16:02:58 2008 alexUpdateSUSend station sus front-end bug fixinstalled and started new susEtmx.o and susEtmy.o
to fix a problem with ETMY optical lever
variables.
  
  426   Fri Apr 18 16:27:04 2008 robUpdateSUSend station sus front-end bug fix[quote]installed and started new susEtmx.o
and susEtmy.o to fix a problem with ETMY
optical lever variables.[/quote]
  
  436   Tue Apr 22 16:17:48 2008 robUpdateSUSend station sus front-end bug fix[quote]installed and started new susEtmx.o
and susEtmy.o to fix a problem with ETMY
optical lever variables.[/quote]
  
  6875   Tue Jun 26 22:37:43 2012 yutaUpdateIOOenergized OMC stages[Koji, Yuta]

We checked that PZTs between SRM and
  
  5918   Wed Nov 16 21:01:08 2011 JenneUpdateTreasureeom boxI made a super sweet new foam box for our
EOM.  It's awesome, and should be reasonably
easy to duplicate.  Check out the 
  
  5944   Fri Nov 18 11:16:08 2011 ranaUpdateIOOeom box

    

       
            
  
  117   Tue Nov 20 11:10:07 2007 tobinUpdateComputersepics access from matlabI installed "[url=http://www.slac.stanford.edu/~strauman/labca/]labca[/url]",
which allows [b]direct access to EPICS channels
from within Matlab[/b].  It comes with both
  
  3867   Fri Nov 5 09:08:14 2010 steveUpdateSUSepoxyPhysical Electronics: Vac-Seal #288-6000
arriving Monday. Our last bag used last week
had a p/n 1002003 with expiration date  
 11081001.PDF 
  2677   Tue Mar 16 09:37:30 2010 steveUpdateSUSeq 4.4 seen by oplevs and osemsThe oplev plots clearly show the alignment
effect of this eq.
 opleveq4.4.jpgeq4.4.jpgopleveq4.4d3.jpg 
  6661   Tue May 22 20:01:26 2012 DenUpdateCDSerror monitorI've created transmission error monitors
in rfm, oaf, sus, lsc, scx, scy and ioo models.
I tried to get data from every channel transmitted
  
  9862   Mon Apr 28 10:24:10 2014 KojiUpdateLSCerror signal characterizationAs we now have the loop model, we can characterize
the error signals.
We have the following data:
 ALSX_SPE.pdfALSY_SPE.pdf 
  6211   Wed Jan 18 14:28:36 2012 kiwamuUpdateLSCestimation of optical length between PRM and scattering objectAssuming
that PRM is interfering with some other optics,
I have estimated the optical distance between
 calibration.pngscattering.png 
  6212   Wed Jan 18 16:31:10 2012 kiwamuUpdateLSCestimation of optical length between PRM and scattering objectI
searched for a scattering body in the REFL
path.
 ND1atten.png 
  228   Wed Jan 9 10:47:15 2008 frickeUpdateComputersethernet wiring in office/control roomThe electrical people have been here for three
days, installing ethernet cables and drops
in the 40m office area, in the old conduits
  
  13517   Tue Jan 9 00:07:03 2018 johannesUpdateDAQetmx slow daq chassisAll parts received and assembly near complete,
small problem detected because the two DSub
connectors are too close together for two
  
  13529   Wed Jan 10 22:24:28 2018 johannesUpdateDAQetmx slow daq chassisThis evening I transitioned the slow controls
to c1auxex2.


Disconnected satellite
  
  13535   Thu Jan 11 20:59:41 2018 gautamUpdateDAQetmx slow daq chassisSome suggestions of checks to
run, based on the rightmost colum in the
wiring diagram here
  
  13537   Fri Jan 12 10:02:05 2018 johannesUpdateDAQetmx slow daq chassis


Quote:


  
  13543   Fri Jan 12 19:15:34 2018 johannesUpdateDAQetmx slow daq chassisSteve and I removed c1auxex from 1X9 today
to make space for the DAQ chassis. Steve
installed rails for mounting. To install
  
  232   Thu Jan 10 10:38:02 2008 steveUpdateSUSetmy damping restoredThe IST building onstruction has really started
yesterday and continuing today with big heavy
ground breaking
 etmysus.jpgsustrend16d.jpg 
  938   Wed Sep 10 08:57:03 2008 steveUpdateGeneraletmy illuminator turned offThe ETMY illuminator was left on yesterday.
I just turned it off.
  
  504   Thu May 29 16:32:09 2008 steveUpdateSUSetmy oplev is backI relayed the optics for ETMY-oplev as shown
in pictures below.
The reflected beam goes directly to the qpd
 P1020417.pngP1020420.png 
  507   Fri May 30 12:37:45 2008 robUpdateSUSetmy oplev is back[quote]I relayed the optics for ETMY-oplev
as shown in pictures below.
The reflected beam goes directly to the qpd[/quote]
  
  487   Mon May 19 11:49:57 2008 steveUpdateSUSetmy oplev laser replacedThe 9 years old Uniphase HeNe was replaced
by a new JDSU 1103P
Power output ~3.5 mW, reflected light back
  
  1578   Tue May 12 17:26:56 2009 peteUpdateoplevsetmy oplev quad was badPete, Rob
After looking at some oplev noise
spectra in DTT, we discovered that the ETMY
 bad_oplev_quad.pdf 
  1580   Wed May 13 03:05:13 2009 peteUpdateoplevsetmy oplev quad was bad


   
        
            
  
  122   Mon Nov 26 10:17:31 2007 steveOmnistructureSUSetmy sus damping restored20 days plot is showing etmy loosing damping
4 times.
I zoomed in with each event. Three of them
 etmyrms20d.jpgetmyrmseq.jpg 
  222   Thu Jan 3 09:55:11 2008 steveUpdateSUSetmy sus damping restoredETMY watch dog was lost at midnight  etmy12h.jpg 
  254   Wed Jan 23 09:27:55 2008 steveUpdate etmy sus damping restoredSeismis event trips etmy  etmysus.jpg 
  237   Mon Jan 14 14:41:09 2008 steveUpdateSUSetmy sus damping restored & mz relockedTree days trend of MZ HV drift is typical
these days.
So as the etmy sus inability to hold damping
 etmysus&mzhvtrend.jpg 
  225   Fri Jan 4 08:42:03 2008 steveUpdateSUSetmy trips againETMY sus damping tripped at 6am this morning
It was reset. We should put an accelerometer
to the south end to see
 etmy20m.jpgetmy120s.jpgetmysenV.jpg 
  220   Thu Jan 3 08:53:55 2008 steveUpdateSUSetmy vs etmxRana have corrected sus gain damping setting
of ETMY 8 days ago
 sus.jpg 
  6226   Thu Jan 26 08:36:38 2012 steveUpdateSAFETYevacuation drillIt started with fire alarm test yesterday
at 14:50 All alarms are  functioning
VERY loud and their flashers are bright.
  
  3311   Wed Jul 28 14:54:56 2010 steveUpdateSAFETYevacuation drill at the 40mHead count at the evacuation drill today.
I checked  alarms and flashers 
at room 104,102,101, 103, 105 and 107. They
 P1060520.JPG 
  6348   Fri Mar 2 18:11:50 2012 jamieSummarySUSevaluation of eLIGO tip-tilts from LLO[Suresh, Jamie]
Suresh and I opened up and checked
out the eLIGO tip-tilts assemblies we received
  
  609   Tue Jul 1 10:15:22 2008 steveUpdatePSLeventfull two daysThe laser recovered from a short temp rise.
The MZ was aligned and realigned. The suspentions
were kicked up accidentally. 
 2d.jpg 
  6403   Tue Mar 13 07:04:55 2012 kiwamuUpdateLSCevolution of the sensing matrix in PRMI as a function of timeThe
punch line is -- the sensing matrix still
looks strange in the PRMI configuration.
 PRCL.pngMICH.png 
  6406   Tue Mar 13 16:56:19 2012 kiwamuUpdateLSCevolution of the sensing matrix in PRMI as a function of timeNext steps:

    Compare the obtained sensing
matrix with an Optickle model. Particularly
  
  6419   Wed Mar 14 21:01:36 2012 keikoUpdateLSCevolution of the sensing matrix in PRMI as a function of timeThis is the simulated signals
to compare with the original post #6403
  
  6405   Tue Mar 13 16:40:06 2012 kiwamuUpdateLSCevolution of the sensing matrix in PRMI as a function of time: detailsHere
I describe the measurement of the sensing
matrix.
 lockins_MICH.png 
  9489   Wed Dec 18 15:35:48 2013 SteveUpdatePEMexcess seismic noiseThis is not a test. Life can be dangerous
in the 40m Control  Room.
 seismicCar.jpg 
  7669   Mon Nov 5 10:34:48 2012 SteveUpdateVACexisting vacuum documents

    

       
            
  
  7154   Sun Aug 12 01:21:26 2012 steveUpdateSAFETYexit door left unlockedCaltech security called me at 1am Sunday.
 Control room emergency
  
  7155   Sun Aug 12 10:34:45 2012 KojiUpdateSAFETYexit door left unlockedI unlocked the door on Tuesday in order
to move the red cart. 
After that I confirmed that the door
  
  6444   Mon Mar 26 15:15:16 2012 kiwamuUpdateIOOexpected beam profile of PRM reflectionI have estimated how the mode profile
of the PRM reflection should be, as shown
in the plot blow.
 expected_edit.png 
  4154   Fri Jan 14 11:29:00 2011 kiwamuUpdateLSCexpected open loop TF of X arm lockingHere shows a plot of the expected open
loop transfer function (TF) for the X arm
locking.
 xarm_oltf.png 
  6445   Mon Mar 26 16:25:44 2012 kiwamuUpdateIOOexpected v.s. measured beam profile of PRM reflection[Suresh / Kiwamu]
 We did the 2nd round of
the PRM reflection mode scan on Friday.
 PRMreflection.pngDSC_4001_small.jpg 
  6692   Sat May 26 20:40:48 2012 DenUpdatePEMexperiments with seismic noiseI measured relative motion of 2 seismometers
separated by 4, 18 and 38 feet.
 DSC_4307.JPGDSC_4308.JPGsim_delta.pngratio.pngpsd_distance.png 
  6695   Sun May 27 23:15:22 2012 DenUpdatePEMexperiments with seismometersI wondered if linoleum is a reason of high
Guralp noise. I measured Guralp noise in
3 cases: they stand on a very soft piece
 DSC_4309.JPGDSC_4310.JPGDSC_4311.JPGloc_noise.png 
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