40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  40m Log, Page 205 of 339  Not logged in ELOG logo
ID Date Authordown Type Category Subject Text Attachments
  5056   Thu Jul 28 17:04:04 2011 NicoleUpdateSUSPhotosensor Head Calibration CurveHere is the calibration curve (displacement
versus voltage output) for the photosensor
head that I made with the S5971 photodiodes
 187K_resistor.jpg 
  5098   Tue Aug 2 23:02:48 2011 NicoleUpdateSUSFixed Accelerometer

 
 shakerposts.jpgnewclips.jpgclipstoamplifier.jpg 
  5099   Tue Aug 2 23:14:21 2011 NicoleUpdateSUSCorrected Screw Alignment in TT Suspension BaseThe TT suspension base was not able to
be securely mounted to the optical table
(i.e. mounted with 4 screws)
 newholes.jpgmountedmirrorflash.jpg 
  5107   Wed Aug 3 12:27:01 2011 NicoleSummarySUSWeekly SummaryThis week I have determined the linear
region for my photosensor. I have determined
the linear region to be -14.32 V/cm in the
 calibrationplot.jpgcalibrationplot.jpgcalibrationplot.jpgnewholestobe.JPG 
  5119   Thu Aug 4 20:05:23 2011 NicoleUpdateSUSNew Horizontal Sliding Base Mount for TT suspension testingIn order to more-securely mount the TT
supsion to the horizontal sliding base, I
have made a sub-mounting plate (upon Koji's
 topplateview.jpgplatform.jpglasersetup.jpg 
  5145   Mon Aug 8 22:12:58 2011 NicoleSummarySUSDaily SummaryToday I balanced the mirror, finished putting
together the second photosensor, and finished
my photosensor circuit box! 
 frontview.jpgfrontview.jpg 
  5154   Tue Aug 9 13:34:40 2011 NicoleSummarySUSNew Calibration Plots for PhotosensorsHere are the new calibration plots for
my photosensors. These calibrations were
done using a translation stage.
 ps1.jpgps2.jpg 
  5160   Tue Aug 9 19:53:56 2011 NicoleSummarySUSWeekly SummaryThis week, I have finished assembling everything
I need to begin shaking. I built an intermediary
mounting stage to mount the TT suspension
 entiresetup.jpg 
  5169   Wed Aug 10 12:32:09 2011 NicoleSummarySUSWeekly Summary UpdateLast night, I attached a metal plate to
the Vout faceplate of my photosensor circuit
box because the BNC connection terminals
  
  5178   Wed Aug 10 19:18:26 2011 NicoleSummarySUSFixed Reflective Photosensors; Recalibrated Photosensor 2Thanks to Koji's help, the second photosensor,
which was not working, has been fixed. I
have re-calibrated the photosensor after
 ps2.jpg 
  5183   Thu Aug 11 06:45:14 2011 NicoleSummarySUSShaking TestingKoji and I have finished shaking the table for the
first round of measurements (horizontal shaking).
  
  5188   Thu Aug 11 12:31:39 2011 NicoleSummarySUSPhotosensor Head Calibration Curve for TT FrameI have re-calibrated the photosensor I
used to measure the displacements of the
TT frame (what I call "Photosensor 2").
 ps2frame.jpg 
  5191   Thu Aug 11 14:22:00 2011 NicoleSummarySUSPhotosensor Head Calibration Curve for TT Frame

    

       
            
  
  5195   Thu Aug 11 16:09:05 2011 NicoleSummarySUSBode Plot for TT SuspensionAll of my plots have already taken into
account the calibration of the photosensor
(V/mm ratio)
 6x 
  5205   Fri Aug 12 11:07:50 2011 NicoleSummarySUSMore TT Shaking Completed This MorningThis morning (about 10am to 11am), I have
collected additional transfer function measurements
for the T.T. suspension. I have finished
  
  5206   Fri Aug 12 14:15:07 2011 NicoleSummarySUSBode Plot for TT SuspensionHere is my bode plot comparing the flexibly-supported
and rigidly-supported EDCs (both with no
bar)
 EXPrigidvsflex.jpg 
  5208   Fri Aug 12 15:34:16 2011 NicoleSummarySUSBode Plot for TT Suspension

    

       
            
 RIGIDexp_model.jpgflexmodcomp.jpg 
  5222   Sat Aug 13 15:40:38 2011 NicoleSummarySUSTT Shaking Today and Hopefully More?As reported in my  previous
entry of TT supsension bode plots, I
found that my experimental data had what
 emnoise_and_flex.jpg 
  5223   Sat Aug 13 15:47:47 2011 NicoleSummarySUSTT Optimization CurvesUsing my Matlab model of the flexibly-supported
eddy current damping system, I have changed
parameters to see if/how the TTs can be optimized
 magstrength1.jpgdampermass.jpgresfreq.jpg 
  5225   Sat Aug 13 21:15:47 2011 NicoleSummarySUSTT Optimization Curves


   
        
            
  
  5227   Sun Aug 14 00:26:51 2011 NicoleSummarySUSTT Optimization Curves

    
        
  
  5229   Sun Aug 14 13:57:52 2011 NicoleSummarySUSTT Optimization Curves

    

       
            
 FLEX_exp_mod_comp.jpg 
  5231   Sun Aug 14 17:47:39 2011 NicoleSummarySUSTT Shaking Today and Hopefully More?

    

       
            
 noisetest.jpg 
  10009   Mon Jun 9 10:55:48 2014 NichinSummaryElectronicsBBPD D1002969-v8 transimpedence measurementMy SURF
week-1 work...
 PD_transimpedence_measurement.pngresults.pdfcode_and_data.zip 
  10034   Thu Jun 12 16:56:31 2014 NichinUpdateElectronicsPD Inspection






Normal
0
 Inspection_PD_Freq_Resonse_system_12th_June_2014.pdf 
  10037   Fri Jun 13 18:16:00 2014 NichinUpdateElectronicsChanges to the PD frequency response measurement system



  
  10058   Wed Jun 18 15:25:06 2014 NichinUpdateElectronicsBBPD Transimepedence plot Motivation:  BBPD.pngBBPD_readings_06-18-2014.zip 
  10062   Wed Jun 18 18:16:26 2014 NichinUpdateElectronicsChanges to the PD frequency response measurement system [Nichin,
Eric G, Koji]
Continuing
  
  10079   Fri Jun 20 11:41:18 2014 NichinUpdateElectronicsTransimpedence measurement-BBPDEDIT:
Please ignore the following data. The revised
 BBPD_readings_06-19-2014.zipBBPD_transimpedence_19thJune2014.pdf 
  10082   Fri Jun 20 16:36:44 2014 NichinUpdateElectronicsRF cables removed [Nichin, Eric G]
As mentioned in Elog 10062, we found
RF cables running between demodulators in
  
  10086   Sat Jun 21 01:25:12 2014 NichinHowToElectronicsPD Trasimpedence measurement theory Here
is the logic that I have been using to calculate
the transimpedence of PDs. Please let me
 Transimpedence_Calculation_.pdf 
  10087   Sat Jun 21 01:46:28 2014 NichinUpdateElectronicsBBPD Transimepedence plotSorry for
the late update Koji.
There
 BBPD_06-18-2014.pdfBBPD_readings_06-18-2014.zip 
  10089   Mon Jun 23 21:16:14 2014 NichinUpdateElectronicsTransimpedence measurement-BBPD  [Nichin,
Koji] 
Today
 BBPD_transimpedence_06-23-2014.pdfBBPD_readings_06-23-2014.zip 
  10093   Tue Jun 24 16:52:43 2014 NichinUpdateElectronicsAn RF cable re-installed

    

       
            
  
  10097   Wed Jun 25 02:01:21 2014 NichinSummaryGeneralWeekly Report Attached is the weekly work plan / equipment requirement
/ lab expert's presence needed for
 Nichin_Week4_update.pdf 
  10102   Wed Jun 25 17:13:10 2014 NichinUpdateElectronicsLaser power check - PDFR system[Nichin, Manasa]
I wanted to make sure Alex's system
of Diode laser + laser controller + optical
  
  10105   Wed Jun 25 20:45:04 2014 NichinUpdateElectronicsAS55 Bodeplot [Nichin]
I
 AS55_06-25-2014.zipAS55_bodeplot.pdf 
  10108   Fri Jun 27 18:07:38 2014 NichinUpdateComputer Scripts / ProgramsUpdated script for acquiring data from Agilent 4395A network analyzerThe updated script for remotely getting
data from Agilent 4395A network analyzer
is located at /users/nichin
  
  10111   Mon Jun 30 00:18:15 2014 NichinUpdateComputer Scripts / ProgramsUpdated script for acquiring data from Agilent 4395A network analyzer

    

       
            
  
  10123   Wed Jul 2 16:16:45 2014 NichinUpdateGeneralLAN wire added [Nichin, Eric Q]
We added a new LAN wire from Rack
1Y4 to 1Y1 to connect the RF switch at 1Y1
  
  10128   Thu Jul 3 16:28:38 2014 NichinUpdateElectronicsRF cables installed [ Nichin, Eric G]
RF cables have been installed between
deomodulator output PD RF MON and the RF
 AS55_03-07-2014_162634.pdf 
  10143   Mon Jul 7 17:20:09 2014 NichinUpdateElectronicsRF PDs needed

    

       
            
  
  10145   Mon Jul 7 18:38:27 2014 NichinUpdateElectronicsRF cables rerouted

    

       
            
 1.png2.png 
  10152   Tue Jul 8 15:07:24 2014 NichinHowToElectronicsRF Multiplexer in rack 1Y1The RF
multiplexer is configured as shown in the
figure. It is now effectively a 15x1 RF mux.
 RF_Multiplexers.png 
  10154   Tue Jul 8 16:45:15 2014 NichinUpdateGeneralWeekly plan My plan for next week is...
  
  10166   Wed Jul 9 17:34:11 2014 NichinUpdateElectronicsPDFR: Beam pointing adjustments and DC measurements [Nichin, Manasa]
AIM: 
  
  10183   Fri Jul 11 11:51:03 2014 NichinUpdateElectronicsPDFR: List of DC transimpedancesThe following
values are going to be entered in the param_[PDname].yml
file for each PD. I am elogging them for
  
  10186   Fri Jul 11 17:49:12 2014 NichinUpdateElectronicsNew Prologix GPIB-Ethernet controllerI have configured a NEW Prologix GPIB-Ethernet
controller to use with HP8591E Spectrum analyzer
that sits right next to the control room
  
  10192   Mon Jul 14 12:49:07 2014 NichinUpdateElectronicsNew Prologix GPIB-Ethernet controller

    

       
            
  
  10196   Mon Jul 14 16:51:07 2014 NichinUpdateElectronicsMartian table updated, Named server restarted [Nichin, Jenne]
The martian lookup tables are located
at 
  
ELOG V3.1.3-