| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
77
|
Mon Apr 24 17:38:45 2023 |
Aiden | Summary | General | Clean and Bake Batch 12 | Today I Bagged and tagged the o-rings from
batch 11 and placed them inside the clean
room. I also cleaned batch 12 parts in liquinox |
|
|
23
|
Tue Feb 7 17:27:30 2023 |
Aiden | Physics | ELOG | Clean and Bake Batch #1 | Cleaned SS parts with liquinox for 20 min.
Then put in oven for 5 steps;
1. Ramp, 100
degC, 15 min
2. Const, 100 degC, 30 min
3. |
|
|
356
|
Wed Mar 27 00:03:57 2024 |
Pooyan | Update | Computers | Chimay relocation to Physics 1129 | [Jon, Pooyan]
Moved Chimay from
the server rack in Physics 1119 to a new
rack in Physics 1129. It is connected to |
|
|
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 |
|
|
171
|
Mon Jul 24 16:19:29 2023 |
Shane, Jon | Update | Electronics | Chassis semi-assembled and moved | Began assembly on AA and AI chassis today,
moved them both to top work bench shelf (image
attached). They are delicate so please do |
|
|
95
|
Tue May 9 20:55:12 2023 |
Jon | Infrastructure | VAC | Calibrated Ar leak rate | For future reference, the calibrated Argon
source has a leak rate of 7.55E-8
atm cc/s, or equivalently |
|
|
353
|
Sun Mar 24 11:50:37 2024 |
Aiden | Update | Clean & Bake | Cal Tech FROSTI Parts | Bagged the FROSTI legs and feet after the
conclusion of the clean and bake. They are
double bagged and sitting in the flow bench. |
|
|
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. |
|
|
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 |
|
|
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 |
|
|
44
|
Mon Mar 6 15:32:58 2023 |
Jon | Infrastructure | General | Cabinet installation completed | Jon, Cao, Peter
This morning Facilities delivered
and installed two new cabinets with sliding |
|
|
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 |
|
|
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 |
|
375
|
Mon Jun 10 14:52:38 2024 |
Tyler | Update | FLIR | CIT FROSTI Analysis Update | [Tyler]
Upon further inspection, one
adjustment was made to the FROSTI profile
analysis: changing the transmission value |
|
|
586
|
Tue Jun 3 11:54:06 2025 |
Cece Ochoa | Update | | CE Cavity Design Update | Update on the design for the CE Cavity Mirrors |
|
|
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 |
|
|
585
|
Tue Jun 3 11:50:08 2025 |
Pooyan | Update | CDS | CDS update | There are three major issues with the lab's
CDS system that should be addressed. They
are ordered from the highest priority to |
|
|
590
|
Tue Jun 10 12:11:14 2025 |
Pooyan | Update | CDS | CDS update |
The MEDM models issue was fixed.
The issue was that building the c1msc model
alone was not enough and we had to re-build |
|
|
592
|
Wed Jun 11 16:19:37 2025 |
Pooyan | Update | CDS | CDS update |
Fast channels recorded to .gwf frame
files
Had to add a DAQ Channels
block to the c1msc model for those channel |
|
|
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. |
|
|
199
|
Wed Aug 9 17:35:26 2023 |
Shane | Update | CDS | Binary output chassis finished | Finished the internal wiring for the binary
output chassis today, which completes its
assembly. Also secured ribbon cables and |
|
|
211
|
Wed Aug 16 17:17:02 2023 |
Shane, Jon | Update | CDS | Binary input chassis powering correctly | Binary input chassis passed power-on test,
and is lighting up as expected. Binary output
chassis also successfully powered on. AA |
|
|
197
|
Tue Aug 8 17:03:22 2023 |
Shane, Jon | Update | CDS | Binary input chassis finished | Finished assembly of the binary input chassis
today, including DC on/off switch and LED
installation. external cable assemblies still |
|
|
537
|
Mon Mar 10 21:32:29 2025 |
Nathan | Physics | Electronics | Beam Profiling and PBS Measurements | Beam wasn't diverging, however maybe was about
to diverge when measurements stopped? Will
discuss the PBS measurements and how the |
|
|
80
|
Thu Apr 27 09:48:34 2023 |
Aiden | Summary | General | Batch 12 Bagging | I took batch 12 out of the oven and put them
in a bag and placed the bag inside the clean
room in the first large stainless steel container.
I |
|
|
510
|
Tue Feb 11 08:07:02 2025 |
Luis | Update | VAC | Bake stopped | [Luis, Ma]
Feb/10/25 4:00pm
Bake was stopped. |
|
|
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 |
|
|
25
|
Fri Feb 10 15:15:30 2023 |
Aiden | Update | General | Bagging First Batch | Aiden Bagged and Tagged the first batch of
stainless steel parts shown on the google
spread sheet.
1. Removed two parts from |
|
|
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 |
|
|
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 |
|
|
191
|
Thu Aug 3 18:03:42 2023 |
Shane, Jon | Update | CDS | Anti-Aliasing chassis complete | We finished installing the internal power
supply cables in the anti-aliasing chassis
today, which concludes its assembly. Work |
|
|
154
|
Thu Jul 13 15:31:21 2023 |
Jon | Update | General | Ant traps placed around lab | In response to reports that ants have been
observed in the lab, I placed five ant bait
traps around the room today. Each is sitting |
|
|
155
|
Thu Jul 13 16:59:03 2023 |
Jon | Update | General | Ant traps placed around lab | Update: After seeing the
strong response to the first set, I redistributed
them to the hottest spots and added one more |
|
|
598
|
Tue Jun 24 13:47:58 2025 |
Liu | Update | Interferometer Simulations | Alternative FROSTI A# optimization approach | Alternative FROSTI A# optimization approach |
|
|
63
|
Tue Apr 4 16:43:53 2023 |
Jon | Update | VLC Electronics | Additional Thorlabs PDA10A2 | I ordered a second PDA10A2 and mounting post
+ spacer (which puts the aperture at the
VLC's standard 3" beam height). These arrived |
|
|
14
|
Wed Dec 14 18:34:33 2022 |
Jon | Configuration | Electronics | Adapter for 532 nm laser power supply | I installed an EU-to-US plug adapter for the
532nm laser's 9V power supply. I then re-measured
the laser's power with the correct supply |
|
|
142
|
Mon Jul 3 16:26:21 2023 |
Cao | Infrastructure | DAQ | Access and control Red Pitaya remotely and run it on local machine | [Cao]
To access and control the Red
Pitaya using Python locally on a machine
within the local network, one should follow |
|
|
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). |
|
|
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 |
|
|
285
|
Mon Dec 4 21:27:53 2023 |
Shane | Update | CDS | ADC-DAC loopback test results | Here are the test results from today's ADC-DAC
loopback tests. Channels 14 and 15 were the
only ones behaving abnormally. Not sure what |
|
|
176
|
Thu Jul 27 14:46:55 2023 |
Shane, Jon | Update | Electronics | AA chassis DC on/off switch assembled | Made the first DC on/off switch assembly today
and installed in anti-aliasing chassis. Second
switch assembly to be completed later. |
|
|
247
|
Fri Oct 27 15:28:30 2023 |
Shane | Update | CDS | AA and AI chassis for CyMAC powered on and functional | CyMAC updates: Switched out the faulty power
regulator boards in the Anti-Aliasing and
Anti-Imaging chassis. Both chassis are now |
|
|
577
|
Tue May 13 12:41:06 2025 |
Tyler | Update | TCS | A# Profiles Update | Slides on the A# ITM FROSTI profile modeling
efforts can be found here. |
|
|
209
|
Tue Aug 15 16:10:06 2023 |
Celeste | Update | TCS | 8/15/2023 Simulation Progress | |
|
|
204
|
Fri Aug 11 10:57:20 2023 |
Celeste | Update | TCS | 8/11/23 Simulation Progress | |
|
|
200
|
Thu Aug 10 14:13:38 2023 |
Celeste | Update | TCS | 8/10/23, Simulation Graphical Progress | |
|
|
88
|
Mon May 1 18:56:57 2023 |
Peter | Update | VLC Electronics | 532nm Intensity Measurement | I've configured the two PDA's to the Red Pitaya.
I put a 50 ohm resistor connector to each
red pitaya input port. This was because the |
|
|
89
|
Tue May 2 15:55:33 2023 |
Peter | Update | VLC Electronics | 532nm Intensity Measurement | I changed the 1/2 wave plate from the lens
mount to the rotational optic mount. This
allowed me to rotate the 1/2 wave plate, |
|
|
92
|
Thu May 4 14:01:10 2023 |
Peter | Update | VLC Electronics | 532nm Intensity Measurement | I adjusted the rotational mount of the wave
plate to see if the power can be 100% coupled
into either S or P polarization. The images |
|