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ID Date Authorup Type Category Subject Text Attachments
  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 
  
  10197   Mon Jul 14 17:51:34 2014 NichinUpdateComputer Scripts / ProgramsMEDM for PDFR systemA  14.png 
  10202   Tue Jul 15 12:36:17 2014 NichinUpdateElectronicsRF cables rerouted

    

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

    

       
            
 Demodulators_TF.pdf 
  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
  
  10263   Wed Jul 23 11:54:27 2014 NichinUpdateElectronicsCharacterization of demodulator boards.

    

       
            
 1.pdf2.pdf 
  10265   Wed Jul 23 18:53:11 2014 NichinUpdateElectronicsTime delay in RG405 coaxial cables A time delay can be modeled
as the exponential transfer function :  e(-sTd)
 RFcable1.pdfRFcable2.pdf 
  10266   Wed Jul 23 19:30:34 2014 NichinUpdateElectronicsTime delay in the RF multiplexer (Rack 1Y1)A time
delay can be modeled as the exponential
transfer function :  
 RFmux1.pdfRFmux2.pdf 
  10280   Mon Jul 28 10:42:43 2014 NichinUpdateElectronicsDemodulator board's characterization I used vector fitting to fit the
transfer functions between RF input and PD
RF MON of demodulator boards. These fittings
 Demod_Fit.pdf 
  10288   Tue Jul 29 18:58:57 2014 NichinUpdateComputer Scripts / ProgramsPDFR update and Test runThe PDFR system's interface and scripts
have been updated to include quite a few
more features.
 16.pngPDFR_testRun_29-07-2014.pdf 
  10305   Thu Jul 31 12:01:35 2014 NichinUpdateComputer Scripts / ProgramsPDFR updateThe Transimpedance plots of PDFR now have
a reference plot or baseline plot along with
the current measurement, for easy comparision.
 REFL11_31-07-2014_115010.pdf 
  10332   Tue Aug 5 17:24:37 2014 NichinUpdateComputer Scripts / ProgramsPDFR updateThe PDFR system now has the capability
to automatically run vectfit3.mat using a
wrapper script named vectorfitzpk.m
  
  10346   Thu Aug 7 13:39:41 2014 NichinUpdateComputer Scripts / ProgramsWrapping up PDFR1)The PDFR scripts have all been migrated
into /scripts/PDFR/
2) The MEDM screen to run PDFR is
  
  10355   Fri Aug 8 16:45:40 2014 NichinUpdateWikiPDFR wiki updated The PDFR system has been documented
in the 40m wiki and all the relevant information
about making changes and keeping it updated
  
  4839   Mon Jun 20 11:04:03 2011 NicoleUpdateSUSWork Plan for Week 2Here is my work plan for this week:
Current Week Plan (Week 2)
  
  4844   Mon Jun 20 18:12:20 2011 NicoleUpdateSUSSmall Table Cleaned and Levelled    P6220198.JPGP6220199.JPG 
  4853   Wed Jun 22 12:24:44 2011 NicoleSummarySUSMidweek 2 Work SummaryI
have made my transfer function model
 P6220200.JPG 
  4858   Wed Jun 22 18:41:23 2011 NicoleSummarySUSBROKEN bread board circuit box and L9337 LED Current Versus Voltage CurveNOTE: The potentiometers on the  LED_I_vs_V_exp_plot.png 
  4875   Fri Jun 24 01:05:32 2011 NicoleSummarySUSTransfer Function Model Analysis Summary and New Posted LED V vs. I CurveI have updated   
  4879   Fri Jun 24 17:04:25 2011 NicoleUpdateSUSBasic Laser Safety Training; Moved TT Mirror; Horizontal Displacement Mech PlanToday Ishwita,
Sonali, and I completed basic laser safety
 CompiledParts.JPGHorizontalDispMount.JPG 
  4908   Wed Jun 29 11:25:07 2011 NicoleSummarySUSWeekly Summary of WorkUpdate of Week
3 Work:
  
  4913   Wed Jun 29 22:35:06 2011 NicoleSummarySUSCompleted Quad photodiode Box Circuit DiagramsI have finished
drawing the circ
 summingcircuit.jpgQPDYcircuit.jpgQPDX_2circuit.jpg 
  4964   Wed Jul 13 12:24:46 2011 NicoleUpdateSUSWeekly UpdateThis week,  PHOTOSENSORPLAN.JPGprelimcircuit.JPGPCBforphotosensor.JPGlookingforbox.JPGaccelerometer.JPG 
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