| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
548
|
Tue Apr 8 00:17:01 2025 |
Michael | Update | Interferometer Simulations | Squeezing Performance Graphs for Case With and Without Toroidal Mirrors in LIGO | I've created some graphs for the frequency
dependent observed squeezing level in LIGO
for both the nominal case and the case where |
|
|
129
|
Tue Jun 20 22:14:24 2023 |
Pamella, Cao | Infrastructure | VAC | Short term testing of vacuum heater controller units | [Pamella, Cao]
Fuse replacement
Replace blown 10A fuse
in ucontroller outside cleanroom
|
|
|
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 |
|
|
163
|
Tue Jul 18 16:04:26 2023 |
Pamella | Update | FLIR | Setup FLIR with black wall (black body) | [Pamella]
Today I tried get data
the heater with the black screen but doesn't
looks possible have just one "energy" point |
|
|
505
|
Tue Jan 28 13:30:46 2025 |
shane | Update | CDS | Serial comms testing update | Attempted to communicate with the smaller
vac pump (TwissTor 74) via Agilent software
today. Was able to communicate with the pump |
|
|
419
|
Fri Aug 2 13:50:22 2024 |
Shane | Update | CDS | Serial Comm. Test (Agilent Turbo Pump) | Did a brief communication test with the agilent
turbo pump today, to see if we could get
serial communications up and running for |
|
|
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 |
|
|
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 |
|
|
444
|
Mon Sep 23 08:29:49 2024 |
Luke | Update | Interferometer Simulations | Ringheater update |
Ringheater
Update
If the link does not work here is |
|
|
513
|
Sun Feb 16 16:45:18 2025 |
Luke | Update | General | Ringheater position optimization | Over the last couple weeks I have been
working on finding the optimal position of
the ringheater's thermal profile. |
|
|
423
|
Mon Aug 12 16:35:30 2024 |
Luke | Update | | Ringheater modeling Update | |
|
|
452
|
Wed Oct 2 12:05:42 2024 |
Luke | Update | | Ringheater modeling Update | Power
point slides |
|
|
502
|
Sat Jan 25 18:19:39 2025 |
Luke | Update | General | Ringheater modeling Update | Here
is a quick update on some of the things I
have been working on regarding my project. |
|
|
521
|
Sun Feb 23 16:00:07 2025 |
Luke | Update | Scripts/Programs | Ringheater modeling Update | These are some plots:
The first shows the convergence of
the 02 mode reducing the size of the mesh. |
|
|
569
|
Sun May 4 18:17:45 2025 |
Luke | Update | Scripts/Programs | Ringheater modeling Update | Slides
I have changed some properties
of the thermal model and am re-running the |
|
|
584
|
Mon Jun 2 09:45:06 2025 |
Luke | Update | Scripts/Programs | Ringheater modeling Update | Slides
I have added some slides to my meeting
updates. The updates include: my choice in |
|
|
430
|
Tue Aug 27 18:37:40 2024 |
Luke | Update | Interferometer Simulations | Ringheater model update | Updated the model to produce a more circular
deformation in the HR surface. The first
three attachments are from irradiance patterns |
|
|
541
|
Sun Mar 23 15:39:06 2025 |
Luke Johnson | Update | Scripts/Programs | Ringheater Location optimization | Attached are some plots that show a new parameter
sweep with a finer mesh then before. I have
also been able to get a heatmap of power |
|
|
439
|
Mon Sep 16 07:28:16 2024 |
Luke | Update | Interferometer Simulations | Ring heater update | |
|
|
403
|
Sat Jul 13 15:09:04 2024 |
Luke | Update | General | Ring heater COMSL model update | After the feedback from last meeting and
Liu's help narrowing down what I should do
to improve the model. I made some changes: |
|
|
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 |
|
|
344
|
Wed Feb 28 12:02:08 2024 |
Tyler | Update | General | Resistors for Heater Elements Update | Power Res (Ohm) RTD Res (Ohm)
Heater
1= 72.8; 80.6
Heater 2= 69.5; 80.8
Heater
3= 70; 83.2
Heater 4= 70.6; 78.7
Heater |
|
|
307
|
Wed Jan 17 15:47:49 2024 |
Aiden | Update | General | Resistors for Heater Elements | Power Res (Ohm) RTD Res (Ohm)
Heater
1= 73.6; 81.8
Heater 2= 70.4; 82.1
Heater
3= 71; 84.5
Heater 4= 71.5; 80
Heater |
|
|
517
|
Tue Feb 18 11:19:13 2025 |
Luke | Configuration | VAC | Repositioning of the lid's temperature probe | Before the recent bake I slightly repositioned
the temperature probe on the lid from beside
the heater tape to under the heater tape. |
|
|
170
|
Mon Jul 24 14:55:53 2023 |
Jon | Update | VAC | Removed extension power cable | I removed the extension cable that was powering
the leftmost heater controller, since there
is no bake currently happening. It is currently |
|
|
466
|
Tue Oct 29 16:37:35 2024 |
Tyler | Update | Electronics | Red Pitaya OS Update | The Red Pitaya ecosystem has been upgraded
to OS 2.00-35, with a key feature
being greater freedom in adjusting the sampling |
|
|
78
|
Tue Apr 25 11:56:37 2023 |
Jon | Update | VLC Electronics | Red Pataya has arrived | The Red Pataya 125-14 starter kit that we
ordered for locking the 532 nm cavity has
arrived. I left it laying on the optical |
|
|
366
|
Mon May 13 13:03:41 2024 |
Tyler | Update | FLIR | Readout Code Updates | [Tyler]
Some changes have been made
to the FLIR readout code to help improve
its functionality:
More accurate |
|
|
313
|
Fri Feb 2 16:56:56 2024 |
Jon | Update | CDS | RTS model implemented for FROSTI RTD readouts | Summary
Today I finished implementing
an RTS model to read out the integrated FROSTI
RTDs (temperature sensors) via the CyMAC. |
|
|
305
|
Tue Jan 16 12:20:21 2024 |
Tyler | Configuration | Electronics | RTD Readout Chassis Update 2 |
I performed another continuity test on
the RTD chassis wiring, and everything seems
to be set up correctly. The chassis should |
|
|
300
|
Tue Jan 9 12:08:59 2024 |
Tyler | Configuration | Electronics | RTD Readout Chassis Update |
Below is the current state of the RTD
readout chassis wiring. Initial continuity
tests seem good, will run through one more |
|
|
364
|
Thu May 2 22:43:36 2024 |
Tyler | Update | Electronics | RTD Readout Chassis Redesign | [Tyler, Jon]
Today the FROSTI RTD
readout chassis underwent a redesign:
Instead of the original ratiometric |
|
|
298
|
Fri Dec 29 16:02:27 2023 |
Jon | Configuration | Electronics | RTD Readout Chassis | The custom front and rear panels for the
RTD readout chassis arrived last Friday.
I installed them in the chassis frame to |
|
|
351
|
Thu Mar 21 16:56:42 2024 |
Tyler | Update | DAQ | RTD Parameter Calibration | [Jon,Tyler]
We noticed that the RTD
temperature readings given on the Cymac were
off, and traced the issue to miscalibration |
|
|
354
|
Mon Mar 25 10:55:33 2024 |
Tyler | Update | DAQ | RTD Parameter Calibration | Refitted RTD calibration, neglecting quadratic
term:
R_0
(ohm) Alpha (1/C) |
|
|
355
|
Tue Mar 26 13:51:56 2024 |
Tyler | Update | DAQ | RTD Parameter Calibration | Another re-fit, but this time the quadratic
coefficient (beta) is set to 1.003e-6:
R_0 (ohm) Alpha |
|
|
416
|
Mon Jul 29 13:39:16 2024 |
Tyler | Update | DAQ | RTD Parameter Calibration | [Tyler]
Using the data taken during
the FROSTI testing at Caltech, I attempted
to find a better calibration of the RTD sensors, |
|
|
271
|
Mon Nov 20 10:10:50 2023 |
Tyler | Configuration | Electronics | RTD Logic/Schematic Diagrams |
Below are a basic diagram of what the
RTD measurement circuit logically looks like
and an example schematic of the actual wiring. |
|
|
310
|
Tue Jan 23 12:17:41 2024 |
Tyler | Update | Electronics | RTD Chassis |
After updating the wiring in the RTD
Chassis, a signal is now seen at each ADC
input. However, there seems to be a discrepancy |
|
|
311
|
Tue Jan 30 11:36:19 2024 |
Tyler | Update | Electronics | RTD Chassis |
|
|
|
264
|
Mon Nov 13 11:07:50 2023 |
Tyler | Update | VAC | RTD Analysis |
After initial analysis from last week
on a single RTD, I then extended to looking
at all 8 in series with R_ref (set to 1 kOhm). |
|
|
498
|
Tue Jan 14 10:27:14 2025 |
Tyler | Update | TCS | RIN Updates | [Tyler]
Attached below are updated
plots for the FROSTI RIN measurements for
Jan 14 group meeting.
|
|
|
486
|
Wed Dec 11 13:39:30 2024 |
Tyler | Update | Electronics | RIN Update 12/11/2024 | [Tyler]
Attached below are updated
ASD plots for the FROSTI RIN measurements.
The parameters set for this are the following: |
|
|
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. |
|
|
470
|
Wed Nov 13 14:03:32 2024 |
Tyler | Update | Electronics | RIN Update | [Tyler]
We've added two low-pass filters
in hopes of reducing any potential aliasing
that may be introducing additional noise |
|
|
477
|
Wed Nov 20 12:59:37 2024 |
Tyler | Update | Electronics | RIN Update | I went ahead and compared the noise spectrum
of the ADC to those of the photodetectors
with the FROSTI on and off. As discussed |
|
|
479
|
Wed Nov 27 13:48:01 2024 |
Tyler | Update | Electronics | RIN Update | [Tyler]
I downgraded the Red Pitaya
back to OS 2.00-18 due to runtime errors
during measurement. Once I did this, the |
|
|
531
|
Tue Mar 4 10:28:58 2025 |
Tyler | Update | TCS | RIN Plot Updates | |
|
|
422
|
Mon Aug 12 16:24:34 2024 |
Tyler | Update | Cleanroom | RIN Measurement Update 1 | [Tyler]
For some preliminary tests,
I moved the IR photodetectors outside of
the cleanroom and onto the other optical |
|
|
417
|
Mon Jul 29 14:30:16 2024 |
Tyler | Update | Cleanroom | RIN Measurement Set-up | [Tyler]
I have begun moving parts
into the cleanroom for the upcoming FROSTI
RIN tests that will be conducted within the |
|