| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
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 |
|
|
401
|
Thu Jul 11 15:53:39 2024 |
Luke | Update | VAC | RGA line upgrade | [ Luke, Jon ]
Started work at 11:00
As mentioned in my previous post |
|
|
427
|
Fri Aug 23 16:08:32 2024 |
Luke | Update | VAC | RGA line leak testing | [Luke, Luis, Jon, Tyler]
On the 22nd Dr. Richardson showed
Luis, Tyler and I how to preform a leak test |
|
|
429
|
Tue Aug 27 15:01:26 2024 |
Luke | Update | VAC | RGA line leak testing | [Luke, Tyler]
On the 27th Tyler and I ran the RGA
leak test again with the electron multiplier |
|
|
400
|
Wed Jul 10 17:31:07 2024 |
Luke | Update | VAC | RGA line disassembly and upgrade | [ Luke, Cynthia, Michael, Xuesi, Anthony
]
Started work around 12:45 |
|
|
261
|
Fri Nov 10 08:32:34 2023 |
Jon | Update | VAC | RGA experiments | I ran a 3-minute
degas cycle of the RGA filament for the first
time yesterday (in this process, the filament |
|
|
266
|
Tue Nov 14 17:21:40 2023 |
Jon | Update | VAC | RGA best practices | As a follow up ELOG 261,
I have received advice from one of the vacuum
experts at LIGO Hanford on best practices |
|
|
487
|
Wed Dec 11 16:06:05 2024 |
Luis | Update | VAC | RGA Status | [Luis]
I rebooted Spica and I
was able to connect the RGA again. After
Connecting the RGA, I left the filament on. |
|
|
96
|
Wed May 10 10:49:34 2023 |
Aiden | Update | General | RGA Software | [Aiden, Cao]
Went over how to use the RGA
software, how to change the graph units,
scaling and mass detection. Also went over |
|
|
440
|
Mon Sep 16 13:51:23 2024 |
Luis Martin | Update | VAC | RGA Scans |
|
|
|
448
|
Wed Sep 25 09:06:09 2024 |
Luis Martin | Update | VAC | RGA Scans |
|
|
|
488
|
Thu Dec 12 13:06:39 2024 |
Luis | Update | VAC | RGA Scan and vacuum system updates | [Luis, Luke]
RGA Volume:
T = 21°C, P = 1.74e-9 Torr |
|
|
485
|
Thu Dec 5 10:31:13 2024 |
Luis | Update | VAC | RGA Scan and RGA updates |
|
|
|
459
|
Wed Oct 16 13:58:59 2024 |
Luis Martin | Update | VAC | RGA Scan | The following figure displays data acquired
on 10/09, and it shows that we are no longer
below the cleanliness standard. Also, the |
|
|
463
|
Wed Oct 23 12:08:36 2024 |
Luis Martin | Update | VAC | RGA Scan | [Luke, Luis, Mary, Ma]
On 10/22/24 Luke, Ma, Mary and myself
ran a RGA scan, the results are displayed |
|
|
519
|
Thu Feb 20 17:07:36 2025 |
Luis | Update | VAC | RGA Scan | [Ma, Luis]
February 20, 2025 - 3:30
PM |
|
|
522
|
Mon Feb 24 17:50:13 2025 |
Luis | Update | VAC | RGA Scan | [Ma, Luis]
February 24, 2025 - 1:00PM
Ma performed an RGA scan with |
|
|
469
|
Wed Nov 6 13:48:55 2024 |
Liu | Update | Interferometer Simulations | QN modeling update | Slides |
|
|
405
|
Mon Jul 15 13:30:49 2024 |
Luke | Update | VAC | Problem with 2.75" to 1.33" zero length reducer | Last Friday while checking the depth of the
ZLR I got one of the screws stuck. Today
I tried a couple things to get it out. First |
|