| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
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 |
|
|
153
|
Thu Sep 1 15:51:38 2011 |
Aidan | Laser | Ordering | Access Lasy50 50W laser arrived. | The 50W Access Laser is now in the
lab. We need to wire up the interlock to
the laser, plumb the chiller lines to the |
|
|
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. |
|
|
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 |
|
|
157
|
Tue Jun 5 17:25:43 2012 |
Alex Mauney | Misc | aLIGO Modeling | 6/5/12 Daily Summary | - Had a meeting to talk about the basics
of LIGO (esp. TCS) and discuss the project
- Created COMSOL model for the test |
|
|
158
|
Wed Jun 6 16:54:09 2012 |
Alex Mauney | Misc | aLIGO Modeling | 6/6/12 Daily Summary | - Got access to and started working with
SIS on Rigel1
- Fixed SVN issues |
|
|
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 |
|
|
160
|
Thu Jun 7 16:50:16 2012 |
Alex Mauney | Misc | aLIGO Modeling | 6/7/12 Daily Summary | - Created a COMSOL model with thermal deformations
- Added non-symmetrical heating to
cause astigmatism |
|
|
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 |
|
|
162
|
Fri Jun 8 16:36:47 2012 |
Alex Mauney | Misc | aLIGO Modeling | 6/8/12 Daily Summary | - Tried to fix COMSOL error using the (ts)
module, ended up emailing support as the
issue is new in 4.3 |
|
|
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 |
|
|
164
|
Mon Jun 11 17:11:01 2012 |
Alex Mauney | Misc | aLIGO Modeling | 6/11/12 Daily Summary | - Fixed the (ts) model, got strange results
that indicate that the antisymmetric heating
mode is much more prominent than previously |
|
|
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 |
|
|
166
|
Wed Jun 13 16:36:14 2012 |
Alex Mauney | Misc | aLIGO Modeling | 6/12 and 6/13 Daily Summary | - Realized that the strange deformations
that we were seeing only occur on the face
nearest the ring heater, and not on the face |
|
|
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 |
|
|
168
|
Thu Jun 14 16:51:03 2012 |
Alex Mauney | Misc | aLIGO Modeling | 6/14/12 Daily Summary | - Plugged the output of the model with
uniform heating into SIS using both modification
of the radius of curvature, and direct importation |
|
|
169
|
Mon Jun 18 16:30:36 2012 |
Alex Mauney | Misc | aLIGO Modeling | 6/18/12 Daily Summary | - Verified that the SIS output does match
satisfy the equations for Gaussian beam propagation
- Investigated how changing the amount |
|
|
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 |
|
|
171
|
Tue Jun 19 16:24:52 2012 |
Alex Mauney | Misc | aLIGO Modeling | 6/19/12 Daily Summary | - Did more modeling for different levels
of heating and different mesh densities for
the SIS input. |
|
|
172
|
Wed Jun 20 16:44:58 2012 |
Alex Mauney | Misc | aLIGO Modeling | 6/20/12 Daily Summary | - Attended a lot of meetings (Safety, LIGO
Orientation)
- Finished draft of week 3 report |
|
|
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 |
|
|
174
|
Thu Jun 21 16:54:45 2012 |
Alex Mauney | Misc | aLIGO Modeling | 6/21/12 Daily Summary | - Paper edits and more data generation
for the paper (lower resolution grid data)
- Attended a talk on LIGO |
|
|
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 |
|
|
177
|
Wed Jun 27 16:43:56 2012 |
Alex Mauney | Misc | aLIGO Modeling | 6/27/12 Daily Summary | Plan for building the model
- Find the fields that would be incident
on the beam splitter from each arm (This |
|
|
178
|
Thu Jun 28 16:27:37 2012 |
Alex Mauney | Misc | aLIGO Modeling | 6/28/12 Daily Summary | - Finished the MatLab code that both combines
two fields and simulates the adjustment of
the beamsplitter to minimize the power out |
|
|
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) |
|
|
180
|
Mon Jul 9 16:54:17 2012 |
Alex Mauney | Misc | aLIGO Modeling | 7/9/12 Summary | Made a COMSOL model that can include CO2
laser heating, self heating, and ring heating
Figured out how to run SIS out of |
|
|
181
|
Mon May 13 14:09:02 2013 |
Zach | Computing | DAQ | C2ATF model rebuilt | ATF:1812 |
|
|
182
|
Thu Dec 15 14:02:01 2016 |
Aidan | Computing | Network architecture | Correct network settings for Ubuntu 14 in /etc/network/interfaces | These settings work to get a computer onto
the TCS/ATF network. |
|
|
183
|
Fri Dec 16 10:41:33 2016 |
Aidan | Computing | Network architecture | Correct network settings for Ubuntu 14 in /etc/network/interfaces | Spelt out in a searchable fashion:
auto <portname>
iface <portname> inet |
|
|
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 |
|
|
185
|
Wed May 24 09:58:17 2017 |
Aidan | Electronics | Electronics | Temperature sensor batteries swapped in TCS Lab | I noticed that the TCS lab temperature
sensor batteries died. Apparently they died
two days ago. I swapped in some new batteries |
|
|
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 |
|
|
187
|
Thu Jul 13 10:11:57 2017 |
awade | Electronics | Borrowed | Borrowed newport TrueRMS Supermeter | I lent your fancy Newport TrueRMS Supermeter
with the thermocouple plugs on the top to
the SURF student Jordon. He has it |
|
|
188
|
Thu Sep 21 18:56:53 2017 |
awade | Misc | Borrowed | Borrowed thorlabs power meter | Borrowed thorlabs power meter on 21 Sep
2017. It is on the south table of the
ATF lab. |
|
|
189
|
Wed Oct 11 19:14:16 2017 |
Jon Richardson | Computing | Electronics | Replaced TCS Monitor | I replaced the dead 24" monitor on
the work bench, which is connected to the
video multiplexer. Mike Pedraza was |
|
|
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 |
|
|
191
|
Fri Oct 13 15:52:41 2017 |
Aidan | Lab Infrastructure | General | Broadband mirror BB2-E03 reflectivity at 532nm | I measured the reflectivity of a possible
HWS replacement mirror at 532nm. Thorlabs
BB2-EO3 |
|
|
192
|
Fri Oct 13 18:35:29 2017 |
Jon Richardson | Computing | Electronics | Installed Maku Ethernet CCD Camera | I installed the Maku Gigabit CCD camera
driver software on the hws-ws machine. The
camera viewer can be opened from the terminal |
|
|
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. |
|
|
194
|
Tue Oct 24 10:19:53 2017 |
Jon Richardson | Computing | Electronics | Installed Maku Ethernet CCD Camera | There is an SDK for the camera with compiled
examples. For a really quick image grab from
the command line, use the following: |
|
|
195
|
Tue Oct 24 15:05:57 2017 |
Jon Richardson | Computing | Electronics | Installed a Realtime Beam Profiler for the Mako CCD Camera | Aidan found a C demo code for acquiring
a single image from the Mako CCD camera and
saving it to disk (SynchronousGrab -- aliased |
|
|
196
|
Wed Oct 25 15:34:14 2017 |
Jon Richardson | Computing | Frame Grabber | Mako CCD Camera Code is Fixed | I fixed a bug in how the raw Mako CCD camera
images are being read into memory. The bmp
files turn out to have a block memory layout |
|
|
197
|
Thu Oct 26 10:21:28 2017 |
Aidan | Computing | | Beam size EPICS channels added to TCS-WS softIoc | I've added a softIoc to TCS-WS to capture
the beam size from the MAKO camera. The IOC
is run using ... |
|
|
198
|
Thu Oct 26 10:31:31 2017 |
Aidan | Computing | DAQ | Beam size EPICS channels added to TCS-WS softIoc | These are also being written to frames
on FB4.
|
|
|
199
|
Thu Oct 26 10:45:44 2017 |
Aidan | Computing | DAQ | Beam size EPICS channels added to TCS-WS softIoc | See attached photo for how data is written
to frames ...
|
|
|
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. |
|