| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
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 ...
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|
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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 |
|
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 |
|
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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 |
|
|
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 |
|
|
91
|
Tue Aug 17 22:34:14 2010 |
rana | Misc | General | ETM temperature after a 1W step | This attachment is a Shockwave Flash animation
of the iLIGO ETM getting a 1 W beam with
a 3.5 cm radius getting fully absorbed onto |
|
|
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. |
|
|
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). |
|
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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 |
|
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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 |
|
|
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. |
|
|
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 |
|
|
243
|
Wed Oct 30 12:13:14 2019 |
Jon | Misc | Delivery Note | New lab hardware | Ian and I moved some new hardware into
the lab, shown in the below photos. It is
from the shipment of loaned |
|
|
245
|
Mon Jul 26 16:23:03 2021 |
Aidan | Misc | Flood | Lab flooded from broken pipe leading to sump room |
Koji: QIL/TCS entrance flooding. |
|
|
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. |
|
|
248
|
Wed Aug 25 11:28:56 2021 |
Aidan | Misc | Flood | Lab flooded from broken pipe leading to sump room | 11:29AM - Lab has flooded again this morning.
I'm calling PMA. Looks to be the same
issue as before. |
|
|
249
|
Thu Aug 26 09:00:39 2021 |
Aidan | Misc | Flood | Lab flooded from broken pipe leading to sump room | Some photos of water and clean-up.
Summary: I came into the lab around
11:30AM and found water on the floor in the |
|
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254
|
Fri Jul 8 07:06:41 2022 |
Jc | Misc | VAC | Dewar | [Stephen, JC]
Stephen and I added a new valve
to Dewar's vacuum system. This valve |
|
|
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 |
|
|
93
|
Mon Aug 23 08:43:16 2010 |
Aidan | Things to Buy | Laser | Bought a laser diode from Thorlabs for HWS | It arrived on Friday.
|
|
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106
|
Fri Feb 18 13:26:23 2011 |
Aidan | Things to Buy | Delivery Note | First parts of Bosch framing have arrived from Valin | The first pieces of the Bosch framing have
arrived from Valin Corporation. These are
just small pieces such as the fasteners and |
|
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108
|
Wed Feb 23 18:04:38 2011 |
Aidan | Things to Buy | Delivery Note | First parts of Bosch framing have arrived from Valin |
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|
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111
|
Thu Feb 24 13:35:41 2011 |
Aidan | Things to Buy | Delivery Note | Bosch framing has arrived | The custom pieces of the Bosch framing
have arrived. Transportation is currently
moving them downstairs to the lab. The packing |
|
|
117
|
Tue Mar 1 11:19:34 2011 |
Aidan | Things to Buy | Delivery Note | MFF001 flipper mirror has arrived | The Thorlabs MFF001 flipper mirror
recommended by Bram has arrived. The delivery
note is attached. |
|
|
118
|
Tue Mar 1 11:21:37 2011 |
Aidan | Things to Buy | Delivery Note | More Bosch framing parts - angle connectors | Another box of Bosch framing parts
arrived today. The delivery note is attached. |
|
|
124
|
Tue Mar 8 18:57:50 2011 |
Aidan | Things to Buy | Delivery Note | Fiber optics cable and Bosch Fastener | |
|