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ID Date Author Type Categorydown Subject Text Attachments
  61   Wed Jun 30 00:00:13 2010 Kathryn and WonComputingHartmann sensorrms of centroid position changesGiven
below is a brief overview of calculating
rms of spot position changes to test the
 rms_plot_shuffle.jpgrms_plot_shuffle.jpgrms_plot_noshuffle.jpgeLOG.zip 
  62   Thu Jul 1 09:40:13 2010 James KunertMiscHartmann sensorSURF Log 8 -- more SLED characterizationAs I started setting up my next experiment,
I noticed that the beam size from the SLED
appeared to be larger than expected from
 8x 
  63   Sun Jul 4 06:45:50 2010 Kathryn and WonComputingHartmann sensoranalyzing the wavefront aberrationHappy
Fourth of July!
 eLOG.zipwf_aberration_plot_hightemp_byintegration.jpgwf_aberration_plot_hightemp_fitted.jpg 
  64   Tue Jul 6 21:57:19 2010 James KunertMiscHartmann sensorSURF Log -- SLED fiber output temporal analysisIn the previous log, I describe the direct
measurement of the fiber output beam using
the Hartmann sensor with the plate removed.
 6x 
  65   Thu Jul 15 20:06:37 2010 James KMiscHartmann sensorSURF Log: Thermally Induced Defocus ExperimentsA quick write-up on recent work can be
found at: Google
Docs
 pydefoc.mpyanalyze.mpyimportsingle.mpyimportM.mframesumexport2.py 
  69   Thu Jul 22 21:46:55 2010 James KunertMiscHartmann sensorHartmann Sensor Thermal Defocus Measurement Noise & Ambient Light EffectsAs discussed during the teleconference,
a series of experiments have been conducted
which attempt to measure the thermally induced
 72210b_ambient.png 
  70   Fri Jul 23 10:33:08 2010 AidanComputingHartmann sensorDalsa camera ADC 8th digitizer error I plotted a histogram of the total intensity
of the Hartmann sensor when illuminated and
found that the 128 count problem extends
 histogram_of_dalsa_intensity.pdf 
  71   Fri Jul 23 12:33:51 2010 AidanComputingHartmann sensorInvar clamp scatterI illuminated the Hartmann sensor with
the output of a fiber placed ~1m away.
I noticed that the illumination was
  
  72   Fri Jul 23 12:38:58 2010 AidanComputingHartmann sensorImages for DalsaAttached are the background and 80% illumination
(~uniform spatially uniform) images that
Dalsa requested. 
 dark_0000.jpgbright_0000.jpg 
  73   Fri Jul 23 19:52:49 2010 AidanComputingHartmann sensorDalsa camera ADC 8th digitizer error I've attached an image that shows the locations
of those pixels that record a number of counts
= (2*n-1)*128. 
 image-location-of-excess_pixel_count_pixels.jpg 
  74   Sat Jul 24 10:50:14 2010 AidanElectronicsHartmann sensorLab Temperature and HWS temperature: pre-indium Hour-long trend puts the lab temperature
at 19.51C
Dalsa temperature:
  
  77   Mon Jul 26 12:17:25 2010 AidanElectronicsHartmann sensorAdded Indium to HWS I added some 0.004" thick indium
sheet to the copper heat spreaders and and
the heat sinks on the side of the HWS to
 indium-01.jpgindium-03.jpgindium-05.jpgindium-02.jpgindium-04.jpg 
  78   Mon Jul 26 18:47:12 2010 James KMiscHartmann sensorHex Grid Analysis Errors and Thermal Defocus NoiseMy previous eLog details how the noise
in Hartmann Sensor defocus measurements appears
to vary with ambient light. New troubleshooting
 centerror.PNGcentinit.pnghexgrid.png72010a.png72010a_nohex.PNG 
  82   Fri Jul 30 10:04:54 2010 AidanComputingHartmann sensorRestarted the HWS EPICS channels Restarted the HWS EPICS channels
on hartmann with the following
command:
  
  83   Fri Jul 30 11:01:31 2010 AidanComputingHartmann sensorEPICS softIoc alias I added an alias HWSIoc to
controls which can be used to
start the HWS EPICS softIoc.
  
  84   Fri Jul 30 13:38:39 2010 James KunertComputingHartmann sensorSummary of Thermal Defocus Data AnalysisBelow is a table summarizing the results
of recent thermal defocus experiments. The
values are the calculated change in measured
 ThermDefocMasterFunctions.pngThermDefoc--py4plot.png 
  88   Wed Aug 4 09:57:38 2010 Aidan, JamesComputingHartmann sensorRMS measurements with Hartmann sensor[INCOMPLETE
ENTRY]
We set up the Hartmann sensor and
 rms_analyze_centroids_aidan.pdfRMS_WonCode.pngRMS_WonCodeLessPrism.png 
  92   Wed Aug 18 18:38:11 2010 AidanComputingHartmann sensorHartmann sensor code I downloaded and tested revision
47 of the Adelaide Hartmann sensor code from
the SVN (https://trac.ligo.caltech.edu/Hartmann_Sensor/browser/users/won/HS_OO?rev=47).
 test_HS_Classes.mHS_Image.mHS_Centroids.mHWS_code_output.pngHWS_input_image.png 
  94   Mon Sep 13 18:24:52 2010 AidanLaserHartmann sensorEnclosure for the HWSI've assembled the box Mindy ordered from
Newport that will house the Hartmann sensor.
It's mainly to reduce ambient light, air
 00001.jpg00002.jpg00003.jpg00005.jpg 
  95   Tue Sep 28 10:41:32 2010 AidanLaserHartmann sensorAligning HWS cross-sample experiment - polarization issuesI'm in the process of aligning the cross-sampling
experiment for the HWS. I've put the 1"
PBS cube into the beam from the fiber-coupled
  
  96   Tue Sep 28 17:53:40 2010 AidanLaserHartmann sensorCrude alignment of cross-sampling measurementI've set up a crude alignment of the cross-sampling
system (optical layout to come). This was
just a sanity check to make sure that the
 2010_09_28-HWS_cross_sample_expt_crude_alignment_01.pdf 
  97   Wed Sep 29 16:49:36 2010 AidanLaserHartmann sensorCross-sampling experiment power budgetI've been setting up the cross-sampling
test of the Hartmann sensor, Right now I'm
waiting on a 50/50 BS so I'm improvising
 00001.jpg 
  98   Mon Oct 4 19:44:03 2010 AidanLaserHartmann sensorCross-sampling experiment - two beams on HWSI've set up the HWS with the probe beam
sampling two optics in a Michelson configuration
(source = SLED, beamsplitter = PBS cube).
 test001_two_beams_on_HWS.pdf 
  99   Tue Oct 5 12:51:16 2010 AidanLaserHartmann sensorVariable power in two beams of cross-sampling experimentThe SLED in the cross-sampling experiment
produces unpolarized light at 980nm. So I
added a PBS after the output and then a HWP
 test002_two_beams_on_HWS_analyze.pdfHartmann_Enclosure_Diagram__x-sampling.png 
  100   Thu Nov 4 13:31:19 2010 Won KimComputingHartmann sensorFrame Grabber SDK installation Appended
below is the step by step procedure that
  
  101   Tue Nov 23 06:15:08 2010 WonComputingHartmann sensorImage folder structureAttached below is a diagram that describes
the organisation of image folders that I
am using at the moment with Run_initialize
 image_folders.png 
  109   Wed Feb 23 20:18:30 2011 AidanElectronicsHartmann sensorSuccessfully re-started the Hartmann sensor I reattached the Hartmann Sensor
to the LENOVO machine that is running Ubuntu
and turned it on (it's been disconnected
  
  113   Thu Feb 24 14:23:58 2011 AidanLab InfrastructureHartmann sensorHartmann Sensor box cut down to size I reduced the height of the Hartmann
sensor box. This is what it looks like now:
 
 P1000109.jpgP1000110.jpgP1000111.jpgP1000113.jpg 
  114   Mon Feb 28 17:33:07 2011 AidanComputingHartmann sensorHartmann Seidel abberation channels in frame builderUsing the same methods as before, see below,
I've added some Hartmann sensor EPICS channels
to the frames.
  
  115   Mon Feb 28 17:56:32 2011 AidanComputingHartmann sensorGot HWS code running and interface to EPICSHere are the notes from today's efforts:
 
 
  
  116   Tue Mar 1 10:47:18 2011 AidanMiscHartmann sensorElectron to Counts conversion efficiencyUsing some of the old data from James (attached
below), I calculated the CCD conversion efficiency
(CE) from electrons to bits (Counts).
  
  119   Tue Mar 1 17:05:45 2011 AidanElectronicsHartmann sensorDalsa 1M60 current drawSteve and I measured the current drawn
by the Dalsa 1M60 by connecting it to the
BK Precision 1735 lab power supply that display
  
  120   Thu Mar 3 07:30:18 2011 WonComputingHartmann sensorEffect of high pixel count on rmsWe have been investigating how pixel count
is related to the centroid displacements
by taking several sets of image frames with
 11x 
  121   Tue Mar 8 11:30:26 2011 AidanComputingHartmann sensorHartmann sensor code changes and NTP serverI've made the following changes to the
Hartmann sensor code and to the machine running
the HWS.
  
  123   Tue Mar 8 18:48:00 2011 AidanComputingHartmann sensorHWS code is running and recording centroidsThe Hartmann sensor is running continuously
and is now recording data to file. The formatting
has changed slightly with the data now stored
  
  125   Wed Mar 9 01:00:12 2011 Peter Veitch, Won KimComputingHartmann sensorControl of frame rate usign external triggerWe managed to successfully apply frame
rate control via external trigger from a
pulse generator.
  
  128   Mon Mar 28 13:00:50 2011 AidanLaserHartmann sensorTo do: Check the polarization from the SLED    
  129   Wed Mar 30 12:55:54 2011 AidanLaserHartmann sensorPrism modulation experimentI've set up a quick experiment to modulate
the angle of the Hartmann sensor probe beam
at 10mHz and to monitor the measured prism.
  
  130   Thu Mar 31 11:27:02 2011 AidanLaserHartmann sensorPrism modulation experimentI changed the drive amplitude on the function
generator to 0.05Vpp and have measured the
angle of deflection by bouncing a laser off
  
  131   Fri Apr 1 02:41:55 2011 WonComputingHartmann sensorexposure time and reproducibility of centroids Here is a brief and preliminary summary
of rms of centroid displacements calculated
at a number of different exposure time values.
 9x 
  132   Fri Apr 1 09:51:45 2011 AidanComputingHartmann sensorPrism measurement I analyzed the results from the prism
experiment. The time series and spectra of
the prism are attached.
 Hartmann_Sensor_prism_measurement_2011-03-31.pdfHartmann_Sensor_Prism_measurement_times_series_2011-03-31.pdf 
  137   Sun Apr 17 21:55:51 2011 AidanLaserHartmann sensorHartmann sensor prism/displacement testI've set up an experiment to test the HWS
intensity distribution displacement measurement
code. Basically the beam from a SLED is just
 HWS_prims.jpg 
  139   Mon Apr 18 15:06:53 2011 AidanThings to BuyHartmann sensorOrdered 2" optics from Newport Given that the HWS requires several
2" optics to handle the big beam size,
I've ordered the following items from Newport:
  
  144   Tue May 10 00:55:08 2011 WonComputingHartmann sensorMatlab Compiler and Matlab Compiler Runtime 
I have spent some time with Matlab
Compiler and Matlab Compiler Runtime (MCR).
  
  145   Wed May 11 09:07:03 2011 AidanComputingHartmann sensorChanged ownership of /opt/EDTpdv I changed the ownership of /opt/EDTpdv
to controls with the command:

controls@princess_sparkle:/opt/EDTpdv$
  
  146   Wed May 11 18:38:47 2011 AidanComputingHartmann sensortest_HS binary From Won: (the zip file is also on
the SVN /users/won/compiled_code/test_HS.zip)
 
 test_HS.zip 
  147   Wed May 11 18:44:54 2011 AidanComputingHartmann sensorMatlab Compiler and Matlab Compiler RuntimeInstalling MCR
I located the MCRInstaller on our
distribution of MATLAB on the Ubuntu machine
  
  148   Tue May 17 16:08:02 2011 AidanComputingHartmann sensorWrite speed of the frame grabber to file The attached file shows the output
of the command. The maximum average frame
rate is 57.2Hz when the nominal frame rate
 max_frame_rate_data.txt 
  149   Wed May 18 18:52:12 2011 AidanComputingHartmann sensorTest of position modulation algorithm I measured the prism and displacement
of the Gaussian beam on the Hartmann sensor.
The beam pointing was modulated at 10mHz
 galvo_mirror_experiment.jpg2011-05-18_gaussian_beam_with_galvo_constant.pdf2011-05-18_gaussian_beam_with_galvo.pdf 
  151   Mon May 30 10:53:00 2011 AidanLaserHartmann sensorDefocus vs time I've had the output from a fiber
projected about 400mm onto the Hartmann sensor
for around 5 days now. (The divergence angle
 HWS_defocus_vs_temperature.pdf 
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