| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
440
|
Mon Sep 16 13:51:23 2024 |
Luis Martin | Update | VAC | RGA Scans |
|
|
|
439
|
Mon Sep 16 07:28:16 2024 |
Luke | Update | Interferometer Simulations | Ring heater update | |
|
|
438
|
Mon Sep 9 21:02:37 2024 |
Luke | Update | VAC | Steadystate temperature of flanges | I measured the temperature of the flanges
and reconnected the RGA turning on its filament.
I then turned off the PID controllers. |
|
|
437
|
Mon Sep 9 14:27:36 2024 |
Pooyan | Infrastructure | Computers | Chimay backup attempt | One ongoing work is to make all lab machines
automatically backed-up on Scribe on a daily
basis. The updates should be boatable and |
|
|
436
|
Mon Sep 9 12:36:45 2024 |
Michael | Update | Interferometer Simulations | Update on Analysis of Mode Mismatch Minimization in A# | I have taken a closer look at the solution
curve in the mirror parameter space which
I have searched, focusing on the "resilience" |
|
|
435
|
Fri Sep 6 14:34:52 2024 |
Luke | Update | VAC | Heating tape work | On the 5th I had tried to start baking
the vacuum chamber however certain parts
of the chamber were getting too hot and causing |
|
|
434
|
Tue Sep 3 18:24:17 2024 |
Tyler | Update | CDS | Cymac Timing Chassis Issue | [Tyler, Jon]
The timing chassis used
for the cymac has been shut off due to an
unknown issue causing its supplied current |
|
|
433
|
Tue Sep 3 15:52:56 2024 |
Luke | Update | VAC | Heater tape initilization | [Luke, Tyler, Jon]
On the 3rd we set up the pid controllers
for the heater tapes and after putting on |
|
|
432
|
Sun Sep 1 16:17:40 2024 |
Luke | Update | VAC | Vacuum chamber leak checking and re-applying heating tape | [Luke, Luis, Cinthia, Michal, Tyler]
On the 26th Cinthia, Michal, and
I took off the insolation on the vacuum chamber |
|
|
431
|
Thu Aug 29 16:39:34 2024 |
Luke | Update | VAC | Photos of heater tape | |
6x |
|
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 |
|
|
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 |
|
|
428
|
Mon Aug 26 14:42:04 2024 |
Cynthia | Update | Interferometer Simulations | current status on cavity scan with effects of FROSTI | I used the code and arm cavity model used
for previous O5 study on mirrors and HOM
(the pdf of the study and the result can |
|
|
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 |
|
|
426
|
Mon Aug 19 07:11:55 2024 |
Cynthia | Update | Interferometer Simulations | cavity scans with FROSTI effects | |
|
|
425
|
Fri Aug 16 12:51:46 2024 |
Luis Martin | Update | VAC | Update on vacuum chamber status | [Luis, Luke, Tyler]
Vacuum chamber parts were finally
received and assembled. After whipping down |
|
|
424
|
Mon Aug 12 17:09:04 2024 |
Cynthia | Update | Interferometer Simulations | O4 vs O5 cavity scans with ITM plume guess or ETM | So far the proposed solution for what to use
for O5 ITM mirror for SIS simulations is
either the plume guess file or using the |
|
|
423
|
Mon Aug 12 16:35:30 2024 |
Luke | Update | | Ringheater modeling Update | |
|
|
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 |
|
|
421
|
Tue Aug 6 13:07:07 2024 |
Xuejun | Update | Interferometer Simulations | | [Xuejun]
The width and location of
the measured in-air change in temperature
profile has been determined to be 0.045m |
|
|
Draft
|
Sun Aug 4 09:01:01 2024 |
Michael | Update | Interferometer Simulations | Update on SRC Mode Mismatch Analysis | An update on my analysis to minimize mode
mismatch/scattering by introducing toroidal
mirrors to the SRC. |
|
|
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 |
|
|
418
|
Tue Jul 30 07:42:47 2024 |
Jon | Infrastructure | General | Cable tray installed in 1119 | Yesterday I installed another 5' cable tray
in 1119, for permanently routing Ethernet
lines to the L-bench. It is securely bolted |
|
|
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 |
|
|
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, |
|
|
415
|
Mon Jul 29 12:23:10 2024 |
Liu | Update | Interferometer Simulations | Update on mechanical resonances of CE BS with stiffener ring | Update on mechanical resonances of CE BS with
stiffener ring is attached. |
|
|
414
|
Mon Jul 29 12:20:56 2024 |
Liu | Update | Interferometer Simulations | Update on wavefront actuation with astigmatically driven RH for CE | Update on wavefront actuation with astigmatically
driven RH for CE is attached. |
|
|
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. |
|
|
412
|
Fri Jul 26 17:25:42 2024 |
Jon | Infrastructure | Computers | New workstation ws4 installed in 1129 | Today I installed the second desktop workstation
in 1129. The new machine is an Intel NUC13ANHi5,
with a 12-Core Intel i5-1340P CPU, 32GB DDR4 |
|
|
411
|
Mon Jul 22 18:19:34 2024 |
Luke | Update | VAC | Zero length reducer stuck bolts | Today, I borrowed a bolt extractor drill
bit from the machine shop to remove some
stuck bolts from the zlr. Before starting, |
|
|
410
|
Tue Jul 16 18:43:07 2024 |
Shane | Update | CDS | ADC-DAC loopback testing and IOLAN installation |
UPDATE:
Follow up ADC-DAC loopback testing
now complete, matching all the ADC channels
to a single DAC channel, and then matching |
|
|
409
|
Mon Jul 15 15:52:40 2024 |
Michael | Update | Interferometer Simulations | aLIGO locking with varying SRC mirrors and measuring mode mismatch | |
|
|
408
|
Mon Jul 15 15:44:52 2024 |
Cynthia | Update | Interferometer Simulations | performed cavity scans with thermal effects and ring heater | |
|
|
407
|
Mon Jul 15 14:49:06 2024 |
Pooyan | Update | Computers | Synology NAS server setup | Installed a Synology NAS server (Synology
RackStation RS1221) in lab room 1129, with
host name “scribe” and ip “192.168.1.17”. |
|
|
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. |
|
|
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 |
|
|
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 |
|
|
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: |
|
|
402
|
Thu Jul 11 21:01:37 2024 |
Jon | Infrastructure | General | Cable tray installed in 1129 | Today I installed a 10' cable tray in 1129,
for permanently routing Ethernet lines to
the workstations. It is securely bolted to |
|
|
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 |
|
|
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 |
|
|
399
|
Tue Jul 9 18:19:50 2024 |
Shane | Update | CDS | ADC-DAC loopback testing and IOLAN installation | [Shane, Jon]
Finished ADC-DAC loopback
testing today (see attached xlsx file or
access directly here). |
|
|
398
|
Mon Jul 8 17:01:45 2024 |
Shane | Update | CDS | New CyMAC internal layout | [Jon, Shane]
Internal layout of CyMAC has
been updated (labeled image attached) to
accommodate the replacement of the two ribbon |
|
|
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 |
|
|
396
|
Mon Jul 8 10:39:14 2024 |
Xuejun | Update | FLIR | Average Temperature Profile | After taking data for each of the individual
heater elements, I imported them into python
and overlayed them to produce an average |
|
|
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 |
|
|
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 |
|
|
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 |
|
392
|
Mon Jul 1 15:19:42 2024 |
Cynthia | Update | Interferometer Simulations | O4 and O5 mirror cavity scans with thermal effect | |
|
|
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 |
|