| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
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 |
|
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 |
|
|
253
|
Thu Jun 23 10:53:17 2022 |
JC | Lab Infrastructure | General | Seat For Photodiode Testing | [JC, Chub, Radhika]
Chub and I ordered a few parts
from McMaster in order build a handrail-like |
|
|
229
|
Mon Jun 17 20:29:34 2019 |
Jon | Lab Infrastructure | Computing | Server rack cleaned up, new workstation installed | In anticipation of the point absorber SURF
project, I cleaned up the server rack and
installed a new workstation today. |
|
|
49
|
Tue Jun 15 16:30:10 2010 |
Peter Veitch | Misc | Hartmann sensor | Spot displacement maps - temperate sensitivity tests | Results of initial measurement of temperature
sensitivity of Hartmann sensor
"Cold" images were taken |
|
|
50
|
Wed Jun 16 11:47:11 2010 |
Aidan | Misc | Hartmann sensor | Spot displacement maps - temperate sensitivity tests - PRISM | I think that the second plot is just showing
PRISM and converting it to its radial components.
This is due to the fact that the sign of |
|
|
223
|
Fri Oct 26 09:49:47 2018 |
Aidan | Misc | Optics | Starting 80C cure of epoxy | I've started an 80C cure of two materials
bonded by EPOTEK 353ND. The objective is
to see (after curing) how much the apparent glass |
|
|
26
|
Mon May 3 17:43:48 2010 |
Aidan | Computing | Frame Grabber | Successful image capture with EDT frame grabber | I noticed that when i ran /opt/EDTpdv/camconfig
and selected camera 331, which appeared to |
|
|
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 |
|
|
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 |
|
|
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) |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
75
|
Sun Jul 25 16:24:56 2010 |
Aidan | Computing | SLED | Superlum SLED test integrated with DAQ - new channel names | I added some new channels to the
Athena DAQ that record the diagnostic channels
from the Superlum SLED. |
|
|
54
|
Tue Jun 22 00:21:47 2010 |
James K | Misc | Hartmann sensor | Surf Log -- Day 4, Hartmann Spot Flickering Investigation | I started out
the day by taking some images from the CCD |
7x |
|
43
|
Wed May 26 06:47:02 2010 |
Aidan | Laser | SLED | Switched off SLED - 6:40AM | |
|
|
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 |
|
|
122
|
Tue Mar 8 18:28:14 2011 |
Aidan | Computing | General | TO DO notes |
Write a Wiki page that describes
how to add channels to the Athena Box
Write a Wiki page that describes how |
|
|
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 |
|
|
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.
|
|
|
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 |
|
|
105
|
Tue Feb 8 13:02:26 2011 |
Aidan | Electronics | Delivery Note | Thorlabs S322C 200W power head arrived | The 200W Thermopile power head from
Thorlabs arrive today. The scanned delivery
note and calibration info are attached. |
|
|
128
|
Mon Mar 28 13:00:50 2011 |
Aidan | Laser | Hartmann sensor | To do: Check the polarization from the SLED | |
|
|
246
|
Tue Jul 27 08:39:33 2021 |
Aidan | Misc | Flood | Tuesday (27-Jul) morning check - lab looks okay | I checked the lab this morning. It was
dry and there wall was in the same state
as yesterday. |
|
|
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. |
|
|
252
|
Fri May 20 16:42:47 2022 |
Stephen | Things to Buy | Ordering | Up to Air valve for IR Labs Cryostat | Purchased from Lesker, for venting of IR
Labs Cryostat:
- P/N C35103000 |
|
|
234
|
Wed Jul 24 16:25:13 2019 |
Edita Bytyqi | Lab Infrastructure | Optics | Updated 2-lens setup | The previous 2-lens setup focused the beam
to a tight spot, however due to the divergence
angle of the laser beam, a significant amount |
|
|
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 |
|
|
59
|
Fri Jun 25 10:47:08 2010 |
Aidan | Misc | aLIGO Modeling | Uploaded aLIGO axicon+ITM COMSOL model to the 40m SVN | I added a COMSOL model of the aLIGO ITM
being heated by an axicon-formed annulus
to the 40m SVN. The model assumes a fixed |
|
|
60
|
Fri Jun 25 10:59:43 2010 |
Aidan | Misc | aLIGO Modeling | Uploaded aLIGO axicon+ITM COMSOL model to the 40m SVN | Here are the results in the annulus thickness
vs annulus diameter space ...
|
|
|
3
|
Mon Dec 28 14:48:29 2009 |
Aidan | Computing | DAQ | VME crate has a "new" CPU - needs to be configured | I installed a recycled VME crate in the
electronics rack. It currently has a Baja
4700E CPU card in it - and this needs to |
|
|
5
|
Tue Dec 29 17:50:57 2009 |
Aidan | Computing | DAQ | VME crate has proper boot settings | We fixed the start-up settings on the VME
crate to look for a TCS startup file on fb0.
The settings on the Baja 4700 are now: |
|
|
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 |
|
|
225
|
Fri Feb 8 10:48:33 2019 |
Aidan | Lab Infrastructure | General | Water damage repair work in the TCS Lab | Caltech Facilities has determined that
the walls in the SE corner of the TCS Lab
in West Bridge were water damaged during |
|
|
85
|
Fri Jul 30 19:22:24 2010 |
Aidan | Computing | EPICS | Waveform Channel Access for storing centroids | A waveform channel was added to the
HWS softIoc on hartmann. This allows arrays
of data to be stored in a single channel. |
|
|
86
|
Fri Jul 30 21:19:05 2010 |
Aidan | Computing | EPICS | Waveform Channel Access for storing centroids | After some discussion with Frank we figured
out how to edit the record type in HWS.db
so that the waveform/array channel actually |
|
|
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 |
|
|
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. |
|
|
112
|
Thu Feb 24 14:20:55 2011 |
Aidan | Misc | Ring Heater | aLIGO H2 Ring Heater Pics | Here are some pictures of the ring
heater segments destined for the H2 Y-arm
this year. |
|
|
63
|
Sun Jul 4 06:45:50 2010 |
Kathryn and Won | Computing | Hartmann sensor | analyzing the wavefront aberration | Happy
Fourth of July!
|
|
|
4
|
Tue Dec 29 16:05:09 2009 |
Frank | Computing | DAQ | booting VME crates from fb1 | http://nodus.ligo.caltech.edu:8080/AdhikariLab/514 |
|
|
33
|
Thu May 6 12:32:11 2010 |
Aidan | Computing | Hartmann sensor | dalsa_to_epics Python script crashed ... | Here's the error:
|
|
|
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 |