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ID Date Author Type Category Subject Text Attachments
  9727   Fri Mar 14 10:31:10 2014 jamieUpdateGreen LockingALS Slow servo settings

    

       
            
  
  9726   Fri Mar 14 09:44:34 2014 SteveUpdateLSCmorning lock   2hrsMorningLock.png 
  9725   Thu Mar 13 16:05:48 2014 steveUpdatesafetysafety audit 2014

    

       
            
 T1400198-v1-CIT-LIGO_Labs_Annual_Safety_Audit_2014.pdf 
  9724   Thu Mar 13 01:18:00 2014 JenneUpdateLSCComposite Error Signal for ARms (8)[Jenne, EricQ]
As Koji suggested in his email this
afternoon, we looked at how much actuator
 7x 
  9723   Wed Mar 12 08:40:42 2014 SteveUpdateVACRGA scan at day 35 
 
 pd77m35d.png 
  9722   Tue Mar 11 21:38:43 2014 manasaUpdateComputer Scripts / ProgramsIFO configure scripts in burt modifiedI have modified the IFOconfigure scripts
and the corresponding .req files for the
  
  9721   Tue Mar 11 19:38:26 2014 manasaUpdateGreen LockingALS Slow servo settings

    

       
            
  
  9720   Tue Mar 11 19:07:24 2014 ericqUpdateElectronicsHigh gain Trans PD electronics changeSpeaking of the whitening board, I had
neglected to post details showing the the
whitening was at least having a positive
 SQRTINVwhitening.pdfsqrtinvWhitening.zip 
  9719   Tue Mar 11 18:34:11 2014 JenneUpdateLSCComposite Error Signal for ARms (7)[Nic, Jenne, EricQ, and Koji]
We
have used CESAR successfully to bring the
 spectra-ungarble.pdfScreenshot-1.pngScanFromOffToOnResonance.pdfScanThroughResonance.pdf 
  9718   Tue Mar 11 18:33:21 2014 KojiUpdateLSCComposite Error Signal for ARms (6) Today we modified the CESAR block.
- Now the sign(X) function is in
a block.
 14.png 
  9717   Tue Mar 11 15:21:08 2014 KojiSummaryLSCComposite Error Signal for ARms (1)True. But we first want to realize this
for a single arm, then move onto the two
arms case. 
  
  9716   Tue Mar 11 15:19:45 2014 JenneUpdateElectronicsHigh gain Trans PD electronics changeAs
part of our CESAR testing last night, we
had a look at the noise of the 1/sqrt(TR)
 IMG_1309.JPG 
  9715   Tue Mar 11 15:14:34 2014 denSummaryLSCComposite Error Signal for ARms (1)

    

       
            
  
  9714   Tue Mar 11 15:01:28 2014 ericqUpdateComputer Scripts / ProgramsMC Signal MonitoringTwo weeks ago (Feb 26) I took the "Q
MON" output of the demodulator that
sends its Q output to the MC servo board
  
  9713   Tue Mar 11 14:49:01 2014 KojiSummaryLSCImportant notice on the XARM servoThe nominal gain
of the XARM for the POX11 error signal is
  
  9712   Mon Mar 10 21:16:56 2014 KojiSummaryLSCComposite Error Signal for ARms (5) After making the CDS modification, CESAR
was tested with ALS.
First of all, we run CESAR with threshold
  
  9711   Mon Mar 10 21:16:13 2014 KojiSummaryLSCComposite Error Signal for ARms (4) The LSC model was modified for CESAR.
A block called ALSX_COMBINE was made
in the LSC block. This block receives the
 ss1.pngss2.pngCESAR_OFFSETS.pdf 
  9710   Mon Mar 10 21:14:58 2014 ericqSummaryLSCComposite Error Signal for ARms (3)Using Koji's mathematica notebook, and
Nic's python work, I set out to run a time
domain simulation of the error signal, with
 model.pngsimSweep.pdfalsSweep.pdf 
  9709   Mon Mar 10 21:13:43 2014 nicolasSummaryLSC Composite Error Signal for ARms (2)In order to better understand how the composite
signal would behave in the presence of noise,
I decided to do a simple analysis of the
 rawsigs.pngerrorsigs.pngoptimalweights.pngcompositenoise.png 
  9708   Mon Mar 10 21:12:30 2014 KojiSummaryLSCComposite Error Signal for ARms (1)The ALS error (i.e. phase tracker output)
is linear everywhere, but noisy. 
The 1/sqrt(TR) is linear and less
 composite_linear_signal.nb.zip 
  9707   Mon Mar 10 12:49:27 2014 JenneUpdateIOOPMC input pointing misalignedI don't know why, but as you can see in
Steve's plot from earlier this morning, the
PMC transmission has been going down significantly
  
  9706   Mon Mar 10 11:42:36 2014 JenneUpdateCDSfb timing was offfb timing was off again.   
  9705   Mon Mar 10 09:28:48 2014 steveUpdateIOOIOO pointing 2 days Morning seconds without adjustment.
 
 IOOpointing2d.pngmorningseconds.png 
  9704   Fri Mar 7 16:56:17 2014 steveUpdateIOOIOO qpds centered

    

       
            
 IOOqpdCentered.png 
  9703   Fri Mar 7 16:13:03 2014 SteveUpdateVACpumping speed is recovered

    

       
            
 pumpingSpeed.png 
  9702   Fri Mar 7 00:43:34 2014 manasaUpdateLSCALS C&D locked (on MC2 and ETMs) and IR resonance obtained[EricQ, Manasa]

 ALS_MC2CARM.pdf 
  9701   Thu Mar 6 19:17:05 2014 manasaUpdateIOOMC calmed down

    

       
            
 MC_spots_Mar6.png 
  9700   Thu Mar 6 17:34:03 2014 ranaUpdateSUSOplev Tuning - Cartoon cost function

    

       
            
  
  9699   Thu Mar 6 11:43:17 2014 steveUpdateGeneralGuralp control unitCMG-40T handheld controller unit is missing
its power supply. In order to zero the instrument
one has to apply plus and minus DC voltage.
 GuralpCU.jpgBAH.jpg 
  9698   Thu Mar 6 11:15:32 2014 KojiSummaryLSCStuck at step 2You don't need to make transition from
ALS X/Y to ALS C/D. Just stabilize the arms
with ALS C/D from the beginning.
  
  9697   Thu Mar 6 09:47:11 2014 SteveUpdateIOOMC trend of 20 days

    

       
            
 IOO_20days.png 
  9696   Wed Mar 5 22:32:21 2014 manasaUpdateLSCStuck at step 2

    

       
            
  
  9695   Wed Mar 5 19:27:24 2014 manasaUpdateIOOMC calmed downThe IMC has not been behaving well since
this morning and totally not happy when Q
was finishing his measurements. The WFS servo
  
  9694   Wed Mar 5 19:15:39 2014 JenneSummaryLSCALS offset moving script modified

    

       
            
  
  9693   Wed Mar 5 18:04:36 2014 ericqUpdateLSCEquivalent Displacement Noise from QPD Dark Noise in SQRTINVAt today's meeting, it was suspected that
these noise levels were far too low. (ELOG
 calc1.jpgcalc2.jpgSQRTINVspectra.dat.zipdarkTransmonSpec.py 
  9692   Wed Mar 5 16:27:51 2014 ericqUpdateLSCPreliminary Arm Loss MeasurementsI measured the arm cavity losses as Kiwamu
did way back in ELOG
5074.
 Yarm.pdf 
  9691   Wed Mar 5 11:33:10 2014 KojiSummaryLSC2 arm ALS->LSC transition - road mapStep by step description of transition
from 2arm ALS to Common/Differential LSC
for FPMI
  
  9690   Wed Mar 5 09:52:31 2014 JenneUpdateSUSOplev Tuning - Cartoon cost functionNot a whiteboard, but here's a cartoon
of my oplev cost function cartoon. 
For the "maximize this area" and
 CostFunctionOplev.pdf 
  9689   Tue Mar 4 17:07:27 2014 SteveUpdatePEM floor cleaning under racks

    

       
            
  
  9688   Mon Mar 3 23:16:06 2014 ranaUpdateLSCY Arm Loop Shape found to be weird: changed now I was getting the Y Arm ready for
Eric Q's loss measurements and so I looked
at the noise and loop shape. The loop shape
 Yarm_sweep_140303.pdfYarm_sweep_140303b.pdfyarm.pdf 
  9687   Mon Mar 3 22:21:43 2014 KojiSummaryLSCPRMIsb locked with REFL165I&QSuccessful
PRMIsb locking with REFL165I/Q
My
  
  9686   Mon Mar 3 21:50:35 2014 JenneUpdateComputer Scripts / ProgramsDropbox installed on WorkstationsI have installed Dropbox on the 40m workstations,
using the foteee account. 
I put it in /users/Dropbox.
  
  9685   Mon Mar 3 17:35:10 2014 KojiUpdateLSCVarious demod phase measurementI wanted to check how the refl signals
looked like. 
I decided to measure the demod phase
  
  9684   Mon Mar 3 11:55:39 2014 KojiUpdateCDSfb timing was offWe need to correctly setup crontab or rc.local
for the frontend machines.
  
  9683   Mon Mar 3 10:42:53 2014 JenneUpdateCDSfb timing was off...yet again.
lsc and sus needed mxstream restarts
after I restarted the ntp on fb.
  
  9682   Thu Feb 27 22:25:29 2014 ranaUpdateSUSOplev Tuning Party - round 1 commentary  in order to Win in Loop Tuning,
you must draw a 
  
  9681   Thu Feb 27 13:11:13 2014 steveUpdatesafetysafety audit correction

    

       
            
 noDaisyChaining.jpgZbThumbnail.info 
  9680   Thu Feb 27 01:02:57 2014 JenneUpdateSUSOplev Tuning Party - round 1[Jenne, Vivien]
We
had an oplev tuning party this afternoon. 
 PRM_oplevTuning_26Feb2014.pdf 
  9679   Wed Feb 26 23:14:07 2014 JenneUpdateCDSfb timing was off....fb timing issue happened again.
I thought that it was the thing that
Koji and I saw the other day, where it was
  
  9678   Wed Feb 26 10:08:14 2014 SteveUpdateIOOIOO trend 
 The MC is happy 
 IOOtrend3&24h.png 
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