| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
345
|
Wed Feb 28 17:49:18 2024 |
Tyler | Update | TCS | FROSTI Assembly - Days 2-3 | [Aiden, Jon, Luis, Luke, Michael, Tyler]
FROSTI
assembly was completed today. The RTD and
power wires were terminated at the DB-25 |
|
|
347
|
Wed Mar 6 09:57:52 2024 |
Tyler | Update | TCS | FROSTI Wiring | Upon finishing the FROSTI assembly last
week, we ran into some electrical issues.
An electrical short was found between two |
|
|
442
|
Mon Sep 16 14:59:51 2024 |
Tyler | Update | TCS | FLIR RIN Update 09/16 |
Below is the dark noise spectrum of the
Red Pitaya, which was measured over the course
of a weekend. Additionally, I have successfully |
|
|
453
|
Wed Oct 2 12:20:43 2024 |
Tyler | Update | TCS | Updated FROSTI Analysis 10/02/2024 | Attached below are updates on current FROSTI
prototype analysis. |
|
|
457
|
Wed Oct 9 13:52:31 2024 |
Tyler | Update | TCS | RIN Update 10/09/2024 | I tried adjusting the gain settings on
the photodetectors to check if this would
help improve the RIN spectra measurements. |
|
|
162
|
Tue Jul 18 14:13:46 2023 |
Sophia | Update | Scripts/Programs | Update on Laser Noise Data Collection and Analysis | We [Sophia and Tyler] have found a code which
will partition our data and generate PSD's
and CSD's automatically. We are now in the |
6x |
|
174
|
Thu Jul 27 11:28:36 2023 |
Sophia | Update | Scripts/Programs | Update on Laser Noise Data Collection and Analysis: Dynamic CSD and PSD Plots | This week I have successfully been able to
implement our dynamic CSD and PSD plotting
code, but along the way I encountered a few |
|
|
175
|
Thu Jul 27 14:11:42 2023 |
Sophia | Update | Scripts/Programs | Update on Laser Noise Data Collection and Analysis: Dynamic CSD and PSD Plots | Here's a screen recording of the dynamic raw
data and PSD/CSD plots as they are now. Will
begin working on implementing a code to generate |
|
|
183
|
Mon Jul 31 19:27:30 2023 |
Sophia | Update | Scripts/Programs | Update on Laser Noise Data Collection and Analysis: Dynamic CSD and PSD Plots | An update on the CSD/PSD code:
The code
is now taking a dynamic average of the points,
and that has significantly reduced the noise |
|
|
186
|
Tue Aug 1 15:44:31 2023 |
Sophia | Update | Scripts/Programs | Update on Laser Noise Data Collection and Analysis: Dynamic CSD and PSD Plots | We have identified two problems facing the
intensity noise calculations, which we are
working to solve.
The first of these |
6x |
|
194
|
Mon Aug 7 15:36:18 2023 |
Sophia | Update | Scripts/Programs | Update on Laser Noise Data Collection and Analysis: Dynamic CSD and PSD Plots | Today I was able to fix the red pitaya's plotting
problem, and get my code to recognize driving
frequencies from the function generator to |
7x |
|
196
|
Tue Aug 8 16:47:11 2023 |
Sophia | Update | Scripts/Programs | Update on Dynamic CSD and PSD Plots | We have fixed our rapid plotting error, and
realized that this has not been affecting
our data intake! Below is a video of the |
|
|
206
|
Tue Aug 15 10:35:00 2023 |
Sophia | Update | Scripts/Programs | Update on Laser Noise Data Collection and Analysis: Dynamic CSD and PSD Plots | I have successfully added a button to my graphics,
but it has posed a strange issue with the
CSD and PSD values. When I plot my original |
|
|
207
|
Tue Aug 15 13:32:37 2023 |
Sophia | Update | Scripts/Programs | Update on Laser Noise Data Collection and Analysis: Dynamic CSD and PSD Plots | I have now fixed all issues that I was having
this morning, and have added text boxes which
show the peak values of both PSD's and the |
|
|
249
|
Mon Oct 30 11:03:56 2023 |
Tyler | Update | Scripts/Programs | |
FLIR: After some adjustments, the plot
generated from the FLIR measurements look
much more symmetric (see attachment). There |
|
|
317
|
Tue Feb 6 22:40:25 2024 |
Michael | Update | Scripts/Programs | Long Crab 1 Design Created In Gtrace | Worked on and completed the python code for
the simulation of the Long Crab 1 layout
for Cosmic Explorer basing off of Pooyan's |
|
|
376
|
Fri Jun 14 13:32:13 2024 |
Liu | Update | Scripts/Programs | COMSOL simulation on rectangular heater elements design | I have been looking at the feasibility
of an alternative heater element design for
FROSTI that replaces the original ring-like |
6x |
|
380
|
Fri Jun 21 11:47:30 2024 |
Liu | Update | Scripts/Programs | COMSOL simulation on alternative straightened heater elements design | In the previous post, we saw
that for the heater element design with straight |
6x |
|
387
|
Thu Jun 27 11:09:14 2024 |
Liu | Update | Scripts/Programs | Straight edge STEP files and ray loss analysis | Drawings and CAD models of the straight-edge
designs are exported, and are visualized
in SOLIDWORKS. Two are attached. One is a |
|
|
447
|
Mon Sep 23 15:11:21 2024 |
Tyler | Update | Scripts/Programs | Effective Emissivity Analysis and RIN Update | A quick update on the effective emissivity
analysis for the CIT FROSTI testing:
I was able to (roughly) match |
|
|
134
|
Tue Jun 27 14:04:42 2023 |
Sophia A. | Update | Measuring Noise in Interferometer | Interferometer set up and connection to red pitaya | Today we (Sophia and Tyler) constructed the
set-up for the electrical noise calculation
that I will be conducting this summer. I |
|
|
10
|
Wed Aug 17 16:04:30 2022 |
Phoebe Zyla | Summary | Lore | Testing the Cartridge Heater and Collecting FLIR Data | We have tested the heater to find emissivity,
mounted the heater system to the optical
table, and have taken irradiance maps of |
|
|
274
|
Tue Nov 21 14:47:24 2023 |
Tyler | Update | Lore | 1129 Workbench Assembly Update 1 |
[Tyler, Shane, Mohak, Cynthia, Luke,
Michael, Luis]
Started assembly of the workbench |
|
|
278
|
Mon Nov 27 14:22:30 2023 |
Tyler | Update | Lore | 1129 Assembly Update | [Tyler, Michael, Luke, Cynthia]
The
tabletops have been attached to the workbench
frames. Unfortunately, one of the tabletops |
|
|
281
|
Thu Nov 30 13:50:32 2023 |
Tyler | Update | Lore | Workbench Assembly Completed | [Tyler, Luke, Aiden]
The workbenches
are now completely assembled and put into
their final places. Additionally, the tool |
|
|
321
|
Tue Feb 13 01:26:30 2024 |
Peter | Update | Interferometer Simulations | CARM Power Simulations | Cao's simulations of the circulating power
and gouy phase through a single arm cavity
of the interferometer have been reproduced. |
|
|
322
|
Tue Feb 13 04:05:32 2024 |
Michael | Update | Interferometer Simulations | Shoelaces 1 Layout Simulated in GTrace | I've worked on and have completed a first
simulation of Cosmic Explorer's Shoelaces
1 layout. This is based off of Pooyan's original |
|
|
324
|
Tue Feb 13 12:26:23 2024 |
Tyler | Update | Interferometer Simulations | BS Code Update | I reproduced Cao's CE beamsplitter code
(see below for example plots). I received
the current info on the beamsplitter parameters |
|
|
326
|
Tue Feb 13 13:02:41 2024 |
Pooyan | Update | Interferometer Simulations | Cacity sacn of Fabry-Perot | Created a simple model of Fabry-Perot cavity
in SIS, and did a cavity scan. Total power
in the cavity, 00 mode, and HOMs is measured. |
|
|
334
|
Wed Feb 21 23:15:07 2024 |
Michael | Update | Interferometer Simulations | Long Shoelaces 1 Layout Created in Gtrace and Fixed Ghosting in Beamsplitter | I have created the long shoelaces 1 layout
for cosmic explorer using gtrace, a slight
modification from the shoelaces 1 layout |
|
|
342
|
Tue Feb 27 03:26:28 2024 |
Michael | Update | Interferometer Simulations | Reverse aLIGO Layout Created in Gtrace | I've created the simulation for reverse aLIGO
layout in gtrace. Attached are the desmos
model and the output dxf file. From here |
|
|
343
|
Tue Feb 27 09:06:29 2024 |
Cynthia | Update | Interferometer Simulations | cavity scan with higher order input laser | I performed a few cavity scan with the inputing
laser with a different mode (not pure 00).
For each laser I included a graph for just |
|
|
357
|
Sun Apr 7 13:42:51 2024 |
Michael | Update | Interferometer Simulations | Update on status of gtrace project | [Pooyan, Michael]
After meeting and
discussing the current state of our work
with Prof. Fulda a few weeks ago, we have |
|
|
358
|
Mon Apr 8 14:43:29 2024 |
Pooyan | Update | Interferometer Simulations | SIS update single and coupled cavities | [Pooyan, Cynthia]
Attached is a brief
recap PDF file. A video file showing separate
HOMs plots for the cavity scan with ETM08 |
|
|
359
|
Mon Apr 8 14:57:41 2024 |
Cynthia, Pooyan | Update | Interferometer Simulations | performed cavity scans for O4 O5, and coupled cavity | |
|
|
361
|
Mon Apr 15 15:25:10 2024 |
Cynthia | Update | Interferometer Simulations | progress on simulation so far | |
|
|
363
|
Mon Apr 22 15:06:33 2024 |
Cynthia | Update | Interferometer Simulations | cavity scan update | [Cynthia,Pooyan]
Completed some simulations
injecting 0-10th order modes. Some graphs
will be used for the poster after some further |
|
|
374
|
Mon Jun 3 14:59:44 2024 |
Cynthia | Update | Interferometer Simulations | Created cavity scan with LG modes | |
|
|
381
|
Mon Jun 24 14:28:51 2024 |
Cynthia | Update | Interferometer Simulations | SIS cavity with thermal effect | tried to run a cavity scan with thermal deformation
and ring heater for ITM04 ETM08 (aLIGO mirrors).
Not sure about the accuracy of the graph |
|
|
391
|
Mon Jul 1 11:45:45 2024 |
Sid | Update | Interferometer Simulations | | Progress update: Most of last week was spent
getting set up with SIS, and learning how
to do basic simulations. The goal for this |
|
|
392
|
Mon Jul 1 15:19:42 2024 |
Cynthia | Update | Interferometer Simulations | O4 and O5 mirror cavity scans with thermal effect | |
|
|
393
|
Fri Jul 5 13:17:44 2024 |
Liu | Update | Interferometer Simulations | Four-quadrant FROSTI-like RH for astigmatic thermal actuation for CE optics | In the CE corner layout design and down selection
study, interferometer layouts with large
incidence angles on some of the curved optics |
7x |
|
394
|
Fri Jul 5 14:12:32 2024 |
Liu | Update | Interferometer Simulations | CE BS Mechanical Resonances | The butterfly and drumhead mechanical modes
for the aLIGO BS were calculated in COMSOL.
The resonant frequencies for the two acoustic |
|
|
395
|
Fri Jul 5 14:23:13 2024 |
Liu | Update | Interferometer Simulations | Engineering drawings for straight edge heater element designs for FROSTI | Step files and engineering drawings for the
straight edge heater element designs have
been created in COMSOL and SolidWorks. They |
|
|
397
|
Mon Jul 8 12:26:10 2024 |
Michael | Update | Interferometer Simulations | Minimizing Astigmatic Effects in the SRC of LIGO | This is the first look and analysis of the
effects of astigmatism in the aLIGO optical
layout which can lead to mode mismatch and |
|
|
404
|
Mon Jul 15 09:36:44 2024 |
Liu | Update | Interferometer Simulations | ETM Profile Optimization for FROSTI | This is to optimize the FROSTI heating
profile for ETM, by minimizing the residual
RMSE of the HR surface deformation after |
|
|
406
|
Mon Jul 15 14:28:32 2024 |
Pooyan | Update | Interferometer Simulations | aLIGO test mass surface profiles | Created a Google Slides presentation to
summarize all the mirror surface map information
that we use for simulating interferometers. |
|
|
408
|
Mon Jul 15 15:44:52 2024 |
Cynthia | Update | Interferometer Simulations | performed cavity scans with thermal effects and ring heater | |
|
|
409
|
Mon Jul 15 15:52:40 2024 |
Michael | Update | Interferometer Simulations | aLIGO locking with varying SRC mirrors and measuring mode mismatch | |
|
|
413
|
Mon Jul 29 12:18:52 2024 |
Liu | Update | Interferometer Simulations | Update on FROSTI O5 ETM profile optimization | Update on FROSTI O5 ETM profile optimization
is attached. |
|