| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
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:
|
|
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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 | |
|
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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)
|
|
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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 |
|
|
152
|
Mon May 30 20:11:27 2011 |
Aidan | Laser | Hartmann sensor | Hartmann sensor lever arm calibration | I ran through the procedure to calibrate
the lever arm of the Hartmann sensor. The
beam from a 632.8nm HeNe laser was expanded |
|
|
154
|
Fri Sep 2 14:41:48 2011 |
Aidan | Computing | Hartmann sensor | QFLD-950-3S long term test finished | I ran a test of the HWS with the QFLD-950-3S
for 5 days. The test was terminated as we
need to disconnect all the cabling and tidy |
|
|
155
|
Fri Sep 2 21:41:01 2011 |
Aidan | Electronics | Hartmann sensor | Restarting long term test of QFLD-950-3S | 9:40PM PDT - I've just restarted the long
term measurement of the Hartmann sensor noise
with the QFLD-950-3S. |
|
|
184
|
Wed Apr 26 15:29:25 2017 |
Aidan | Electronics | Hartmann sensor | Long term test of fiber launcher | I've started a long-term measurement
of the HWS fiber-launcher. I'm interested
in seeing how stable the output is. The HWS |
|
|
186
|
Mon Jun 5 16:41:59 2017 |
Aidan | Laser | Hartmann sensor | HWS long term measurement results. | The data from the long-term measurement
of the HWS is presented here. The beam envelope
moves by, at most, about 0.3 pixels, or around |
|
|
190
|
Wed Oct 11 20:19:06 2017 |
Jon Richardson | Lab Infrastructure | Hartmann sensor | Initial Characterization of the SRM Adaptive Wavefront Control | Today I made the first characterization
measurements of the mocked-up adaptive wavefront
control system planned for the signal recycling |
|
|
193
|
Mon Oct 23 19:02:42 2017 |
Jon Richardson | Laser | Hartmann sensor | Mitigated Heating Beam Losses | There were known to be huge (65%) heating
beam power losses on the SRM AWC table, somewhere
between the CO2 laser and the test optic. |
|
|
200
|
Mon Oct 30 17:13:32 2017 |
Jon Richardson | Laser | Hartmann sensor | Write-Up of CO2 Projector Measurements | For archive purposes, attached is a write-up
of all the HWS measurements I've made
to date for the SRM CO2 projector mock-up. |
|
|
208
|
Fri May 11 12:32:21 2018 |
Aidan | Laser | Hartmann sensor | HWS green LED fiber launcher | [Aidan, Marie]
We tested the output of the fiber
launcher D1800125-v3. We were using a 6mm |
|
|
209
|
Fri May 11 16:18:47 2018 |
Aidan | Laser | Hartmann sensor | HWS green LED fiber launcher | And here's the output of the fiber
launcher when I fixed it at 313mm from the
camera, attached an iris to the front and |
|
|
210
|
Wed May 16 16:47:29 2018 |
Aidan | Laser | Hartmann sensor | HWS green LED fiber launcher - D1800125-v5_SN01 | Here is the output from D1800125-v5_SN01.
|
|
|
211
|
Fri May 18 16:32:37 2018 |
Aidan | Laser | Hartmann sensor | HWS green LED fiber launcher - D1800125-v5_SN01 | Title was wrong - this is actually config
[12,2,4,125]
|
|
|
214
|
Thu Jun 21 17:12:38 2018 |
Aidan | Laser | Hartmann sensor | Two inch PBS from Edmund Optics - effect on ETM HWS transmission | I'm considering the 86-711 2"
532nm PBS from Edmund Optics for the ETM
HWS at the sites. |
|
|
224
|
Tue Dec 4 16:57:08 2018 |
Aidan | Computing | Hartmann sensor | Updated GIT version of HWS code | I changed the HWS code to the new git.ligo
HWS version.
Object files are in ~/hws
scripts |
|
|
156
|
Tue Nov 29 09:13:49 2011 |
rana | Misc | LIGO 3G | Switching from CO2 to shorter wavelength solid state laser | Around a year ago, Phil and I discussed
the possibility of using an OPO to possibly
generate our own laser beam at ~2 microns |
|
|
159
|
Thu Jun 7 00:23:11 2012 |
Aditi Mittal | Misc | LIGO 3G | Summary June 5 and June 6, 2012 | June 5
-Discussed the actual project outline
-Installed Comsol on the system |
|
|
161
|
Thu Jun 7 23:24:56 2012 |
Aditi Mittal | Misc | LIGO 3G | Summary June 7, 2012 | -Created a COMSOL model for variation of
temperature in two mass system.
-Used the above model for cryogenic |
|
|
163
|
Fri Jun 8 23:51:13 2012 |
Aditi Mittal | Misc | LIGO 3G | Summary June 8, 2012 | -Created a COMSOL model for cryogenically
shielded test mass with compensation plate.
-Analyzed the behavior of the model |
|
|
165
|
Mon Jun 11 20:53:31 2012 |
Aditi Mittal | Misc | LIGO 3G | Summary June 11, 2012 | -Continued with the same cryogenic
model created and varied the length of outer
shield and studied the temperature variation |
|
|
167
|
Thu Jun 14 05:37:30 2012 |
Aditi Mittal | Misc | LIGO 3G | Summary June 13, 2012 | -Derived formula for manual calculation
of temperature due to total influx.
-Compared the results by COMSOL and |
|
|
170
|
Mon Jun 18 23:42:39 2012 |
Aditi Mittal | Misc | LIGO 3G | Cryogenic Shielding | -Read about blue team design for
maximum power budget.
-Read third generation talks to get |
|
|
173
|
Thu Jun 21 11:16:27 2012 |
Aditi Mittal | Misc | LIGO 3G | Summary June 19 and 20, 2012 | -Attented LIGO orientation meeting
and safety session.
-Prepared 3 week report |
|
|
175
|
Thu Jun 21 18:35:44 2012 |
Aditi Mittal | Misc | LIGO 3G | Summary June 21, 2012 | -Updated 3 week progress report with
new additions and deletions.
-Attended LIGO lecture which was |
|
|
176
|
Tue Jun 26 17:55:44 2012 |
Aditi Mittal | Misc | LIGO 3G | Summary June 26, 2012 | - Discussed the further project with Dr.
Brooks.
-Tried to derive formula for the |
|
|
179
|
Fri Jun 29 15:51:24 2012 |
Aditi Mittal | Misc | LIGO 3G | Summary June 28 and 29, 2012 | -Discussed the project outline for
next 6 weeks.
-made a write up for the tasks. (attached) |
|
|
1
|
Fri Nov 6 20:09:47 2009 |
Aidan | Laser | Laser | Test | Does this work? |
|
|
2
|
Thu Dec 10 22:23:47 2009 |
Not Aidan | Laser | Laser | Test | Yes.
|
|
|
90
|
Tue Aug 17 16:31:55 2010 |
Aidan | Things to Buy | Laser | Bought a laser diode from Thorlabs for HWS | http://www.thorlabs.com/thorProduct.cfm?partNumber=CPS180
I bought this laser diode from Thorlabs
today to try the current modulation trick |
|