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IDup Date Author Type Category Subject Text Attachments
  10210   Wed Jul 16 01:27:01 2014 NichinHowToComputer Scripts / ProgramsHP8591E spectrum analyzer remote scanThe script for running continuous scans
on HP 8591E spectrum analyzer is located
at scripts/general/netgpibdata
 HP8591E_View.pdf 
  10211   Wed Jul 16 01:35:16 2014 KojiSummaryLSCPython Wavelet peak finding for dramatic ALS - Red Resonance finding speedupFrom the last plot:
- Subtracting the offset of 0.0095,
the modulation depth were estimated to be
  
  10212   Wed Jul 16 01:46:41 2014 NichinUpdateElectronicsTest run of PDFR systemA test run was conducted on the PDFR system
last afternoon and transimpedance plots were
generated for 6 of the PDs. The laser
 PDFR_testRun_15-07-2014.pdf 
  10213   Wed Jul 16 01:54:25 2014 NichinUpdateGeneralWork plan for next week1) Debugging transimpedance calculations
in the PDFR
Requires
  
  10214   Wed Jul 16 02:22:10 2014 KojiUpdateElectronicsTest run of PDFR systemLog-log ...    
  10215   Wed Jul 16 07:51:52 2014 AkhilUpdateGeneralWeekly UpdateWork
Done:

    Solved all the timing
  
  10216   Wed Jul 16 15:26:48 2014 SteveUpdatePSLPSL Innolight controller fan is dying

    

       
            
  
  10217   Wed Jul 16 17:06:41 2014 NichinUpdateComputer Scripts / ProgramsHP8591E spectrum analyzer remote scanUpdated script does the following:
1) Gets the highest 2 peaks
2) Puts a marker on the peaks. Now
 HP8591E_View.pdf 
  10218   Wed Jul 16 17:34:11 2014 HarryUpdateGeneralFiber Coupled Purpose
To couple the spare NPRO into our
Panda PM980 fibers, in order to carry out
 fiberTestCouplingSchematic.png 
  10219   Wed Jul 16 19:38:37 2014 manasaSummaryPSLAOM alignment issues and removed from beam pathAOM removed
from the beampath and PMC relocked. 
 AOMremoved.jpg 
  10220   Wed Jul 16 21:23:35 2014 ManasaUpdatePSLPSL Innolight controller fan is dying[Koji, Manasa]
The air flow from the dying fan was
kinda weak and we decided to give a help
 IMG_1659.JPGIMG_1658.JPG 
  10221   Wed Jul 16 21:24:41 2014 ReetikaUpdateElectronicsVCO Driver inside 40m  
I
found the VCO driver, that Rana asked me
  
  10222   Wed Jul 16 22:17:40 2014 AkhilSummaryElectronicsBode Plots and complete Characterization of Frequency CounterGoal:
To estimate the transfer function
and the noise in the FC that is a part of
 Phase_Data.zipBode100MHz.png 
  10223   Wed Jul 16 23:02:16 2014 KojiSummaryElectronicsBode Plots and complete Characterization of Frequency CounterIf I assume 1sample delay for 0.1s sampling
rate, the delay is Exp[-I 2 pi f T], where
T is the sampling period.
  
  10224   Thu Jul 17 00:38:30 2014 JenneUpdateLSCRIN in arm transmission[Rana, Jenne]
We had a look at the RIN of the transmission
signals TRX and TRY, when the arms were individually
 TransRIN.pdf 
  10225   Thu Jul 17 01:24:35 2014 ranaUpdateIOOMC / EOM Stability Mystery Solved!MC loop is near
unstable. Common gain reduced. Needs more
 MC_OLG.pdf 
  10226   Thu Jul 17 02:57:32 2014 AndresUpdate40m Xend Table upgradeFInish Calculation on Current X-arm mode MatchingData and Calculation for the
Xarm Current Mode Matching
 RawDataForTheModeGreenScan.pngResultForModeMatching.pngDataAndCalculationOfModeMismatch.zip 
  10227   Thu Jul 17 16:07:34 2014 Emily UpdateElectronicsVCO DriverI took back he VCO driver that Reetika
brought over to the 40m from the PSL lab.
 
  
  10229   Thu Jul 17 16:39:34 2014 NichinUpdateElectronicsPDFR debugging attempt : REFL11In a attempt to debug the values of transimpedance
generated by the PDFR system, I did a manual
measurement for REFL11 PD.
 REFL11_17-07-2014_154534.pdfREFL11_17-07-2014_154534.zip 
  10230   Thu Jul 17 17:08:58 2014 HarryUpdateGeneral1X2 Rack Changes Purpose
 
Steve and I moved some things around
 1X2Changes.png 
  10231   Thu Jul 17 17:19:25 2014 SteveUpdatePSLPSL Innolight controller fan is dying with extra fan

    

       
            
 fanadded.png 
  10232   Thu Jul 17 17:39:57 2014 KojiUpdateElectronicsPDFR debugging attempt : REFL11What is the coupling factor between the
RF in and the RF mon of the demodulator?
  
  10233   Thu Jul 17 21:01:28 2014 ManasaUpdateGeneral1X2 Rack Changes

    

       
            
  
  10234   Thu Jul 17 22:08:14 2014 KojiUpdateGeneral1X2 Rack ChangesIt sounds like the work was done carefully.
Even so, Jenne or Manasa have to run the
ALS (X and Y) to check if they are still
  
  10235   Fri Jul 18 14:59:07 2014 EvanUpdateIOOMC servo TFs[Rana, Evan]
This morning we took several TFs
of the MC servo board using the HP4395A.
 mcServoTFSettings.pngMCtfs.pdf 
  10236   Fri Jul 18 15:21:12 2014 ericqUpdateComputer Scripts / ProgramsLocal Chiara backups

    

       
            
  
  10237   Fri Jul 18 16:52:56 2014 AndresUpdate40m Xend Table upgradeFInish Calculation on Current X-arm mode Matching

    

       
            
 OldAndNewSetupPlotsOfDisplacementAndAngleAtTheETM.pngOldSetUpDisplacementAndNewSetup.m.zip 
  10238   Fri Jul 18 17:10:57 2014 NichinSummaryElectronicsCharacterization of demodulator boards.Rack 1Y2, I took transfer function measurements
for each of the following demodulator boards:
REFL11, REFL33, REFL55, REFL165, AS55, POP22,
 Demodulators_TF.pdf 
  10239   Fri Jul 18 19:32:50 2014 AkhilSummaryElectronicsFilters used inside the Frequency Counter 
 Thanks Koji , for your  hint
for the brain teasing puzzle. I was looking
 TheoreticalGainPlot.pngTFexpected.png 
  10240   Sat Jul 19 01:59:34 2014 HarryUpdateGeneralFiber Mode MeasurementPurpose 
We wanted to measure the mode coming
out of the fibers, so we can later couple
 fiberModeMeasurement.pngfiberModeMeasurement1.pngfiberModeMeasurement1.zip 
  10241   Sat Jul 19 17:36:44 2014 JenneUpdateLSCRIN in arm transmissionI looked at what the RIN contribution of
the sqrtInv sensor is by locking the arms
individually on IR using POX and POY. 
 TransSqrtInvRIN_vs_ALSsensing_18July2014.pngThorlabsRIN_16July2014.png 
  10242   Sat Jul 19 20:51:51 2014 KojiUpdateLSCRIN in arm transmissionYour
calibration of the ALS signal should be revised.
The phase for the ALS is not an optical
  
  10243   Sun Jul 20 09:26:27 2014 EvanUpdateElectronicsMC servo card modifications in DCC

    

       
            
  
  10244   Mon Jul 21 10:30:38 2014 HarryUpdateGeneralFiber Mode Measurement Purpose
The idea was to measure the profile
of the light coming out of the fiber, so
 fiberModeMeasurement.pngfiberModeFit2.pngfiberModeMeasurement2.zip 
  10245   Mon Jul 21 10:51:06 2014 SteveUpdateVACN2 supply run outInterlock closed valve V1, V4, V5 and VM1
when the nitrogen supply run out. The IFO
pressure rose to P1 1 mTorr
 outofN2.png 
  10246   Mon Jul 21 12:16:27 2014 AkhilSummaryElectronicsFilters used inside the Frequency CounterThe expected bode plots for such
a filter with L= 4 is attached and compared
 FC_TF_Characterization.png 
  10247   Mon Jul 21 13:58:33 2014 ericqUpdateIOOMC autolocker acting upThe autolocker claimed it was running and
blinking, but not doing anything (i.e. lock
bit was not updating and no switches or sliders
  
  10248   Mon Jul 21 17:32:43 2014 ericqSummaryLSCArm losses

    

       
            
  
  10249   Mon Jul 21 18:08:19 2014 HarryUpdateGeneralFiber Mode Measurement

    

       
            
 fiberModeMeasurement3.png 
  10250   Tue Jul 22 08:24:42 2014 EvanUpdateElectronicsMC servo card: modified schematic

    

       
            
 D1400242.zip 
  10251   Tue Jul 22 08:36:08 2014 EvanUpdateIOOMC servo TFs

    

       
            
 MCtfExpectations.pdf 
  10252   Tue Jul 22 15:50:35 2014 NichinSummaryElectronicsCharacterization of demodulator boards.

    

       
            
 Demodulators_TF.pdf 
  10253   Tue Jul 22 15:54:19 2014 ericqUpdateSUSITMY Oplev Recentered ITMY oplev was nearly clipping in
yaw, causing wonky behavior (POY lock popping
in and out frequently). I recentered it and
  
  10255   Tue Jul 22 16:26:04 2014 HarryUpdateGeneralFiber Mode MeasurementI repeated this process once more, this
time using the computer controlled stage
that the beam profiler is designed to be
 fiberModeProfile3.pngfiberModeMeasurement4.zip 
  10256   Tue Jul 22 17:45:11 2014 HarryUpdateGeneralWeekly Update The Past Week
 
I spent the past week coupling NPRO
  
  10257   Tue Jul 22 23:10:12 2014 AkhilUpdateGeneralWeekly Update Work
Done
  
  10258   Wed Jul 23 02:01:15 2014 JenneUpdateLSCRIN in arm transmission - revised calibration 
As Koji pointed out, I messed up
the calibration.  However, fixing it
 TransSqrtInvRIN_vs_ALSsensing_18July2014.png 
  10259   Wed Jul 23 10:39:18 2014 SteveUpdateCamerasvideo quad processors replacedQuad
processor 2 & 3 were replaced.
  
  10260   Wed Jul 23 10:40:23 2014 NichinUpdateGeneralWeekly UpdateTo do:


   Measure and calibrate out  attenuation
and phase changes due to RF cables in the
  
  10261   Wed Jul 23 11:15:54 2014 AkhilUpdateElectronicsInstallation of FCs in the 40m As a part of installation of two(X-ARM
and Y-ARM) frequency counters in the 40m,
I have tested their performance when using
 Timingwith2FCs.png 
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