| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
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 |
|
|
198
|
Wed Aug 9 11:32:56 2023 |
Jon | Infrastructure | General | New power cables | I delivered new NEMA 5-15 (120V / 15 A)
power cables to the lab for the following
items: |
|
|
202
|
Thu Aug 10 15:10:12 2023 |
Jon | Update | VAC | VAC System Heating Update | I shut down the turbo pump since this is evidently
a large leak. We CANNOT turn on the RGA for
leak checking with the pressure above 1E-5 |
|
|
238
|
Wed Oct 11 20:47:11 2023 |
Jon | Update | VAC | Vacuum upgrade begins | [Jon, Tyler, Aiden, Peter]
Upgrade of the UHV system to a larger
turbo pump began today. After obtaining a |
|
|
248
|
Mon Oct 30 08:42:22 2023 |
Jon | Update | VAC | Vacuum Leak Test | By 5:30 pm Friday, the pressure had reached
8.6e-8 torr and was continuing to fall. So
it seems we are OK to proceed with permanentizing |
|
|
257
|
Wed Nov 8 17:55:49 2023 |
Jon | Update | General | Lab Clean-Up Day 1 | [Jon, Tyler, Shane, Peter, Luis]
Today we completed the first phase
of lab clean-up. Activities included: |
|
|
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 |
|
|
277
|
Thu Nov 23 12:34:44 2023 |
Jon | Update | CDS | DB25 signal connections for FROSTI heaters | Update: I was able to put the
FROSTI power controller on the lab network.
It is connected to the switch in the top |
|
|
289
|
Sat Dec 9 12:34:12 2023 |
Jon | Update | General | Electronics workshop migrated to 1129 | [Jon, Tyler, Shane, Luis]
On Wednesday we completed the migration
of the electronics workshop from 1119 to |
|
|
291
|
Mon Dec 11 16:20:17 2023 |
Jon | Summary | TCS | FROSTI Assembly Procedure | Below is the procedure we will follow to
assemble the FROSTI prototype.
Install SS guide rods and |
|
|
294
|
Sun Dec 17 21:04:15 2023 |
Jon | Infrastructure | Clean & Bake | Clean and bake lab migrated to 1129 | [Jon, Tyler, Aiden, Luke]
On Friday we completed assembly of
the new stainless steel-topped benches in |
|
|
297
|
Wed Dec 20 10:33:34 2023 |
Jon | Infrastructure | Clean & Bake | Clean and bake lab migrated to 1129 | Update: I
have completed permanent routing of the electrical
cables. I also ran the ultrasonic washer's |
|
|
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 |
|
|
303
|
Mon Jan 15 22:29:34 2024 |
Jon | Infrastructure | General | Cabinet installation & lab clean-up completed | [Jon, Tyler, Aiden, Shane, Pooyan, Michael,
Cynthia, Luke]
On Wednesday, we completed long list |
|
|
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. |
|
|
327
|
Fri Feb 16 18:37:28 2024 |
Jon | Update | VAC | Bake ended 6:23 pm | I ended the bake of the UHV system (that
began on Monday) at 6:23 pm today by switching
OFF both PID controllers. The heaters elements |
|
|
330
|
Tue Feb 20 08:01:30 2024 |
Jon | Infrastructure | General | Power and network equipment installed in 1129 rack | [Jon, Tyler, Pooyan, Luis, Luke, Peter]
On
Thursday we installed the power conditioning/distribution
equipment and networking equipment in the |
|
|
335
|
Thu Feb 22 21:48:16 2024 |
Jon | Update | VAC | Vacuum vent for RGA testing of reflector | [Jon, Tyler, Luke, Aiden]
Summary
Following
Wednesday's cleanroom cleaning [333],
we proceeded to vent the vacuum chamber, |
|
|
339
|
Sat Feb 24 08:53:38 2024 |
Jon | Infrastructure | Computers | Matlab upgraded to 2023b on Chimay | I upgraded Matlab on chimay to the latest
stable release, 2023b. From some quick tests,
it appears to be in working order. Let me |
|
|
341
|
Mon Feb 26 21:23:27 2024 |
Jon | Update | TCS | FROSTI Assembly - Day 1 | [Jon, Tyler, Luis, Luke, Mohak, Cynthia, Michael,
Aiden]
FROSTI assembly began today. After
a final set of RGA scans were taken, the |
7x |
|
379
|
Thu Jun 20 18:01:11 2024 |
Jon | Infrastructure | Computers | New workstation ws3 in 1129 | I have repurposed a spare Intel NUC to serve
as the first of two planned workstations
in 1129. Today I set it up with a fresh installation |
|
|
385
|
Wed Jun 26 15:33:41 2024 |
Jon | Infrastructure | Computers | New workstation ws3 in 1129 |
Set-up of the first CDS workstation for
1129, ws3, is complete and the machine is
ready for use. The login credentials are |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
26
|
Fri Feb 10 16:34:45 2023 |
Huy Tuong Cao | Infrastructure | Clean & Bake | Nitrogen gas tank ready to use | Cao,
Today I fixed the final bit related
to the nitrogen gas tank, which is to apply
sealing tape to M-NPT connector of the hose |
|
|
359
|
Mon Apr 8 14:57:41 2024 |
Cynthia, Pooyan | Update | Interferometer Simulations | performed cavity scans for O4 O5, and coupled cavity | |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
392
|
Mon Jul 1 15:19:42 2024 |
Cynthia | Update | Interferometer Simulations | O4 and O5 mirror cavity scans with thermal effect | |
|
|
408
|
Mon Jul 15 15:44:52 2024 |
Cynthia | Update | Interferometer Simulations | performed cavity scans with thermal effects and ring heater | |
|
|
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 |
|
|
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 |
|
|
443
|
Mon Sep 16 15:18:59 2024 |
Cynthia | Update | Interferometer Simulations | a breakdown of FROSTI and thermal effects and the resulting cavity scan | |
|
|
446
|
Mon Sep 23 15:00:41 2024 |
Cynthia | Update | Interferometer Simulations | corrections on assumption for O5 coating | The document recording ETM07 and ETM08 coating
(T2300093) was discussed:
the current
plume files are not necessarily correct in |
|
|
587
|
Tue Jun 3 12:16:13 2025 |
Cynthia | Update | Interferometer Simulations | Point absorber simulation on radially averaged profile | |
|
|
361
|
Mon Apr 15 15:25:10 2024 |
Cynthia | Update | Interferometer Simulations | progress on simulation so far | |
|
|
374
|
Mon Jun 3 14:59:44 2024 |
Cynthia | Update | Interferometer Simulations | Created cavity scan with LG modes | |
|
|
426
|
Mon Aug 19 07:11:55 2024 |
Cynthia | Update | Interferometer Simulations | cavity scans with FROSTI effects | |
|
|
454
|
Wed Oct 2 13:38:00 2024 |
Cynthia | Update | Interferometer Simulations | cavity scan with averaged O4 ETM coating as plume | |
|
|
526
|
Tue Feb 25 10:56:25 2025 |
Cynthia | Update | Interferometer Simulations | mirror coating added for simulation rerun | I have tried to rerun the simulation on finesse
after adding the mirror coating. The result
has a large fluctuation in required input |
|
|
530
|
Tue Mar 4 10:18:43 2025 |
Cynthia | Update | Interferometer Simulations | attempted to remove curvature and tilt for the coating | |
|
|
540
|
Tue Mar 11 11:28:52 2025 |
Cynthia | Update | Interferometer Simulations | flattening mirror to study power discrepency | |
|
|
554
|
Tue Apr 15 11:37:17 2025 |
Cynthia | Update | Interferometer Simulations | Finishing up mirror coating map step | |
|
|
635
|
Tue Aug 26 12:45:41 2025 |
Christina, Ma, Tyler | Update | CDS | RIN Update | Slides |
|
|
600
|
Fri Jun 27 15:38:22 2025 |
Christina | Update | TCS | FROSTI Reconstruction | [Tyler, Ma, Christina, Luke]
We threaded the wiring of the
heater elements through the reflective surfaces |
|
|
601
|
Tue Jul 1 11:04:00 2025 |
Christina | Update | TCS | FROSTI Reconstruction II | [Ma, Tyler, Christina]
Finished
external reconstruction of the FROSTI by
installing all the pins to the 2 DB 25 connectors. |
|
|
604
|
Mon Jul 7 16:39:18 2025 |
Christina | Update | TCS | Pomona Box Drawings | Below are the drawings for the pomona
box modifications |
|