| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
61
|
Wed Jun 30 00:00:13 2010 |
Kathryn and Won | Computing | Hartmann sensor | rms of centroid position changes | Given
below is a brief overview of calculating
rms of spot position changes to test the |
|
|
62
|
Thu Jul 1 09:40:13 2010 |
James Kunert | Misc | Hartmann sensor | SURF Log 8 -- more SLED characterization | As 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 Won | Computing | Hartmann sensor | analyzing the wavefront aberration | Happy
Fourth of July!
|
|
|
64
|
Tue Jul 6 21:57:19 2010 |
James Kunert | Misc | Hartmann sensor | SURF Log -- SLED fiber output temporal analysis | In 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 K | Misc | Hartmann sensor | SURF Log: Thermally Induced Defocus Experiments | A quick write-up on recent work can be
found at: Google
Docs |
|
|
69
|
Thu Jul 22 21:46:55 2010 |
James Kunert | Misc | Hartmann sensor | Hartmann Sensor Thermal Defocus Measurement Noise & Ambient Light Effects | As discussed during the teleconference,
a series of experiments have been conducted
which attempt to measure the thermally induced |
|
|
70
|
Fri Jul 23 10:33:08 2010 |
Aidan | Computing | Hartmann sensor | Dalsa 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 |
|
|
71
|
Fri Jul 23 12:33:51 2010 |
Aidan | Computing | Hartmann sensor | Invar clamp scatter | I 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 |
Aidan | Computing | Hartmann sensor | Images for Dalsa | Attached are the background and 80% illumination
(~uniform spatially uniform) images that
Dalsa requested. |
|
|
73
|
Fri Jul 23 19:52:49 2010 |
Aidan | Computing | Hartmann sensor | Dalsa 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. |
|
|
74
|
Sat Jul 24 10:50:14 2010 |
Aidan | Electronics | Hartmann sensor | Lab 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 |
Aidan | Electronics | Hartmann sensor | Added 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 |
|
|
78
|
Mon Jul 26 18:47:12 2010 |
James K | Misc | Hartmann sensor | Hex Grid Analysis Errors and Thermal Defocus Noise | My previous eLog details how the noise
in Hartmann Sensor defocus measurements appears
to vary with ambient light. New troubleshooting |
|
|
82
|
Fri Jul 30 10:04:54 2010 |
Aidan | Computing | Hartmann sensor | Restarted the HWS EPICS channels | Restarted the HWS EPICS channels
on hartmann with the following
command: |
|
|
83
|
Fri Jul 30 11:01:31 2010 |
Aidan | Computing | Hartmann sensor | EPICS 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 Kunert | Computing | Hartmann sensor | Summary of Thermal Defocus Data Analysis | Below is a table summarizing the results
of recent thermal defocus experiments. The
values are the calculated change in measured |
|
|
88
|
Wed Aug 4 09:57:38 2010 |
Aidan, James | Computing | Hartmann sensor | RMS measurements with Hartmann sensor | [INCOMPLETE
ENTRY]
We set up the Hartmann sensor and |
|
|
92
|
Wed Aug 18 18:38:11 2010 |
Aidan | Computing | Hartmann sensor | Hartmann 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). |
|
|
94
|
Mon Sep 13 18:24:52 2010 |
Aidan | Laser | Hartmann sensor | Enclosure for the HWS | I've assembled the box Mindy ordered from
Newport that will house the Hartmann sensor.
It's mainly to reduce ambient light, air |
|
|
95
|
Tue Sep 28 10:41:32 2010 |
Aidan | Laser | Hartmann sensor | Aligning HWS cross-sample experiment - polarization issues | I'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 |
Aidan | Laser | Hartmann sensor | Crude alignment of cross-sampling measurement | I'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 |
|
|
97
|
Wed Sep 29 16:49:36 2010 |
Aidan | Laser | Hartmann sensor | Cross-sampling experiment power budget | I'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 |
|
|
98
|
Mon Oct 4 19:44:03 2010 |
Aidan | Laser | Hartmann sensor | Cross-sampling experiment - two beams on HWS | I've set up the HWS with the probe beam
sampling two optics in a Michelson configuration
(source = SLED, beamsplitter = PBS cube). |
|
|
99
|
Tue Oct 5 12:51:16 2010 |
Aidan | Laser | Hartmann sensor | Variable power in two beams of cross-sampling experiment | The SLED in the cross-sampling experiment
produces unpolarized light at 980nm. So I
added a PBS after the output and then a HWP |
|
|
100
|
Thu Nov 4 13:31:19 2010 |
Won Kim | Computing | Hartmann sensor | Frame Grabber SDK installation | Appended
below is the step by step procedure that |
|
|
101
|
Tue Nov 23 06:15:08 2010 |
Won | Computing | Hartmann sensor | Image folder structure | Attached below is a diagram that describes
the organisation of image folders that I
am using at the moment with Run_initialize |
|
|
109
|
Wed Feb 23 20:18:30 2011 |
Aidan | Electronics | Hartmann sensor | Successfully 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 |
Aidan | Lab Infrastructure | Hartmann sensor | Hartmann Sensor box cut down to size | I reduced the height of the Hartmann
sensor box. This is what it looks like now:
|
|
|
114
|
Mon Feb 28 17:33:07 2011 |
Aidan | Computing | Hartmann sensor | Hartmann Seidel abberation channels in frame builder | Using 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 |
Aidan | Computing | Hartmann sensor | Got HWS code running and interface to EPICS | Here are the notes from today's efforts:
|
|
|
116
|
Tue Mar 1 10:47:18 2011 |
Aidan | Misc | Hartmann sensor | Electron to Counts conversion efficiency | Using 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 |
Aidan | Electronics | Hartmann sensor | Dalsa 1M60 current draw | Steve 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 |
Won | Computing | Hartmann sensor | Effect of high pixel count on rms | We 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 |
Aidan | Computing | Hartmann sensor | Hartmann sensor code changes and NTP server | I'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 |
Aidan | Computing | Hartmann sensor | HWS code is running and recording centroids | The 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 Kim | Computing | Hartmann sensor | Control of frame rate usign external trigger | We managed to successfully apply frame
rate control via external trigger from a
pulse generator. |
|
|
128
|
Mon Mar 28 13:00:50 2011 |
Aidan | Laser | Hartmann sensor | To do: Check the polarization from the SLED | |
|
|
129
|
Wed Mar 30 12:55:54 2011 |
Aidan | Laser | Hartmann sensor | Prism modulation experiment | I'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 |
Aidan | Laser | Hartmann sensor | Prism modulation experiment | I 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 |
Won | Computing | Hartmann sensor | exposure 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 |
Aidan | Computing | Hartmann sensor | Prism measurement | I analyzed the results from the prism
experiment. The time series and spectra of
the prism are attached. |
|
|
137
|
Sun Apr 17 21:55:51 2011 |
Aidan | Laser | Hartmann sensor | Hartmann sensor prism/displacement test | I've set up an experiment to test the HWS
intensity distribution displacement measurement
code. Basically the beam from a SLED is just |
|
|
139
|
Mon Apr 18 15:06:53 2011 |
Aidan | Things to Buy | Hartmann sensor | Ordered 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 |
Won | Computing | Hartmann sensor | Matlab 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 |
Aidan | Computing | Hartmann sensor | Changed 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 |
Aidan | Computing | Hartmann sensor | test_HS binary | From Won: (the zip file is also on
the SVN /users/won/compiled_code/test_HS.zip)
|
|
|
147
|
Wed May 11 18:44:54 2011 |
Aidan | Computing | Hartmann sensor | Matlab Compiler and Matlab Compiler Runtime | Installing MCR
I located the MCRInstaller on our
distribution of MATLAB on the Ubuntu machine |
|
|
148
|
Tue May 17 16:08:02 2011 |
Aidan | Computing | Hartmann sensor | Write 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 |
|
|
149
|
Wed May 18 18:52:12 2011 |
Aidan | Computing | Hartmann sensor | Test 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 |
|
|
151
|
Mon May 30 10:53:00 2011 |
Aidan | Laser | Hartmann sensor | Defocus 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 |
|