 Tue Feb 20 08:01:30 2024, Jon, Infrastructure, General, Power and network equipment installed in 1129 rack 
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[Jon, Tyler, Pooyan, Luis, Luke, Peter]
On Thursday we installed the power conditioning/distribution equipment and networking equipment in the new 1129
rack. The hardware is identical to the setup in the 1119 rack and includes:
Tripp Lite SU5KRT3UTF - 208V, 5kVA on-line UPS with 120V transformer
CyberPower PDU20M2F12R - metered power distribution unit, |
 Tue Feb 20 18:08:24 2024, Aiden, Update, General, Degassing the RGA
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I took an RGA measurement before and after degassing the RGA. Both data was taken with the Argon open. The pressure before taking data was 2.39 e-8 torr
in the main volume. Note that the main chamber was fully valved off for the degas and the main chamber pressure quickly rose to e-6 torr. Further investigation
of this rise should be done as this might be the main culprit for the leaking. |
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Mon Feb 26 15:15:39 2024, Aiden, Update, General, Vacuum Chamber Baking Update
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| Started Bake 12 on Wednesday Feb. 21 and turned the bake off on Saturday Feb. 24. This was a normal low temp bake with the PID controllers set to 110 degC. |
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Wed Feb 28 12:02:08 2024, Tyler, Update, General, Resistors for Heater Elements Update
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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
5= 69.9; 80.6
Heater 6= 71.1; 78.2
Heater 7= 68.5; 76.8
Heater 8= 70.1; 82.8
Quote:
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Sun Mar 24 11:49:27 2024, Aiden, Update, General, FROSTI RGA Scan
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Took RGA data 1 day after the conclusion of Bake 13. Bake 13 ended on Saturday March 23, the RGA data shown was taken on Sunday March 24. The scan shows
that the FROSTI is very clean with no outgassing. The HC levels are at 25 e-10. The pressure in the chamber was also a 1.64 e-8 Torr. |
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Mon Jun 17 11:47:46 2024, Liu, Infrastructure, General, Temporary cooling units for the labs
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Below are the temporary cooling units installed last week in labs 1119 and 1129. They are the temp. replacement for the building AC system, which will be
shut down during the Physics roof replacement. |
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Thu Jul 11 21:01:37 2024, Jon, Infrastructure, General, Cable tray installed in 1129
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Today I installed a 10' cable tray in 1129, for permanently routing Ethernet lines to the workstations. It is securely bolted to C-channels in the side
wall and in the center cable tray. |
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Sat Jul 13 15:09:04 2024, Luke, Update, General, Ring heater COMSL model update
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After the feedback from last meeting and Liu's help narrowing down what I should do to improve the model. I made some changes: First with Liu's help
I made the proportions of the test mass and ring heater much more reasonable and parametrized by constants. Second from Cao's paper "FROSTI Nonimaging
Reflector Design" Liu showed me what I should do to define the elliptical mirrors. Third during Friday's modeling/programming meeting walked me through |
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Tue Jul 30 07:42:47 2024, Jon, Infrastructure, General, Cable tray installed in 1119
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Yesterday I installed another 5' cable tray in 1119, for permanently routing Ethernet lines to the L-bench. It is securely bolted to the top of the electronics
rack, on one end, and to the top of the glass-door storage cabinet, on the other. This eliminates the need for the cable ramp which previously sat behind
the rack. |
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Wed Nov 13 14:06:00 2024, Luke , Update, General,
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| slides |
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Mon Dec 2 13:35:45 2024, Luke , Update, General, Clean and bake of Viton O-rings
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[Luke, Luis]
We couldn't access the bake log on the wiki. (see attached) So we looked in the documentation provided on the DCC to find at what temperature to
bake the Viton O-rings. We found that we should bake Viton at 180°C for 24 hours. |
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Tue Jan 21 10:12:02 2025, Luke , Summary, General, Frosti toy model
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[Luke, Liu]
Over the winter break I have been working on this desmos toy model of the Frosti. There
are still a few rough spots but I belive that it is a good visual representation of a 2D slice of the frosti. |
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Sat Jan 25 18:19:39 2025, Luke , Update, General, Ringheater modeling Update
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Here is a quick update on some of
the things I have been working on regarding my project. |
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Sat Feb 1 17:25:52 2025, Luke , Summary, General, Cleanroom cleaning
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[Luke, Cece, Luis]
Particle Count Measurements:
Pre-cleaning (12:15 PM):
Zone 3:
0.3 µm: 1325
0.5 µm: 265
1.0 |
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Sun Feb 16 16:45:18 2025, Luke , Update, General, Ringheater position optimization
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Over the last couple weeks I have been working on finding the optimal position of the ringheater's thermal profile.
Today I would like to give an update of where I am at and my next steps.
Using the python COMSOL interface I have been able to run and save deformation data sweeping through a great deal of potential combinations of |
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Tue Apr 8 10:47:10 2025, Liu, Update, General, Test Mass Thermal State Decoder Update
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| |
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Tue Jun 24 12:45:16 2025, Tyler, Update, General, Updated ADC spectra
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[Tyler]
Updated ADC noise spectra measurements using diaggui.
NOTE: Will update plots with proper axes |
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Mon Jul 7 17:44:04 2025, Tyler, Update, General, Lab Organization
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[Tyler, Pooyan, Ma, Cece, Luke, Luis, Christina, Maple]
After acquiring some new equipment for the labs, a few of us spent time on Thursday and Friday
sorting through everything and storing them into their appropriate places. New vacuum parts, power supplies, cables, and much more were included. The rooms
are now ready for the lab tours commencing Tuesday afternoon. |
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Tue Sep 2 18:33:38 2025, Liu, Infrastructure, General, New lab room 1125 layout and measurement
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Action items for facilities
Ceiling lights replacement
Fume hood cleaned and refurbished
Sink countertop cleaning
Floor cleaned and waxed
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Thu Nov 20 12:40:47 2025, Xuesi Ma, Infrastructure, General, Room 1125 Optical Table
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| Cleaned off the tapes on the optical table with acetone. |
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Thu Jan 22 10:10:31 2026, Jon, Infrastructure, General, Lab floor plans
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| Attached are the starting and final floor plans for the February 2026 expansion into the Physics 1125 lab. |
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Thu Jan 22 13:18:12 2026, Pooyan, Infrastructure, General, Lab floor plans
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The working document of tasks regarding moving the clean room is attached. Needs LIGO account to access and edit.
https://docs.google.com/document/d/14HhMYBcHmM62Hc1YJhinMsG5uPx6xoW0WEBmDcbNMMg/edit?usp=sharing
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Thu Feb 5 11:42:47 2026, Jon, Infrastructure, General, Lab floor plans
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[Audrey, Cece, Jon, Ma, Mary, Michael, Pooyan, Tyler, Shane]
We have completed the preliminary reorganization of our Physics 1119 lab space. This includes:
Moving all cabinets to their final positions
Clearing out all equipment from the cleanroom in prep for HVAC work, and storing |
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Thu Feb 12 12:25:38 2026, Xuesi Ma, Infrastructure, General, Lab floor plans 8x
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[Cece, Ma, Mary, Pooyan, Tyler, Paul]
We have continued the reorganization of our Physics 1125 and 1129 lab spaces. This includes:
Moving two workbenches from Room 1129 into Room 1125
The workbench with the oven is still in Room 1129
Assembling |
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Wed Apr 19 17:39:50 2023, Pamella, Update, FLIR, FLIR project
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FLIR project updates- Initial tests
10:00: Starting test in position 2 cm to the black wall.
Parameters : 0,305
A, 05,5 V and the temperature inside the mirrors 141,8°C.
10:23 Finished this first tried and take snap. The image is attached below.
The name for the picture for this tried is “AcquisitionImage(Apr-19-2023_10 23)”.
10:37. Starting test in another position |
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Fri Apr 21 15:21:18 2023, Pamella, Update, FLIR,
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FLIR project updates
01:50 pm: Starting test position 34 mm distance to black wall.
Parameters : 0.100 A, 1.5 V and
the temperature inside the mirrors 40°C.
2:09 pm : Finished the test and figured out this position it is too far the black wall so now we change
for more close position.
2:17 pm: Starting test in another position: 10 mm distance to the black wall( this measurement |
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Mon May 22 17:08:50 2023, Pamella, Update, FLIR, FLIR project - Installing the mask.
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[Pamella]
The new mask for the reflector.
1:40 pm: Started reconfiguration on the FLIR camera project. Changed the
old bridge for the new mask-bridge.
2:00 pm: Started figure out the best way to cutting the aluminum foil with the new mask. Unfortunately,
I had been some problems for cutting the perfect shape triangles with the mask because the size inside the triangle is different (smaller) than cutter/knife, |
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Tue May 23 16:52:56 2023, Pamella, Update, FLIR, FLIR project - Reinstalling the mask and Reconfiguration FLIR position.
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[Pamella]
Reinstalling the mask and Reconfiguration FLIR position.
Today i change the aluminum foil inside the 3D mask. After some
tries i was able to have a better shape for the triangles.
I reinstalled the connections (the light with the thermometer point). Also i checked
for the focal point inside the reflector, looks fine.
I did a reconfiguration for the initial tests, without the black wall. I moved the FLIR |
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Wed May 24 14:06:27 2023, Pamella, Update, FLIR, FLIR project - Tests
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[Pamella]
Initial tests
10:30 am : Started trying take some test with the new position/configuration between the 3D reflector-mask
and the FLIR camera.
10:41 am : Started running the python code and take a snap. Parameters: 0.10 A, 1.4 V.
10:50 am : Started take
the snap.It is possible see the triangles, this is a good thing. Negative thing: The middle/center point for the light maybe would be some problems for |
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Tue May 30 14:51:27 2023, Pamella, Update, FLIR, New 3D mask - Bigger triangles shapes.
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[Pamella]
Change the 3D mask
Started removing the old mask in the reflector.
Started cutting the new aluminum lid for the
new 3D mask and assembling in the 3D mask.
Started doing the new cable connections for the light.
Started testing the resistance
in the new cable connections. The multimeter show us 14.2 Ω.
Started attaching the mask with the light and the thermometer sensor.
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Wed May 31 16:55:55 2023, Pamella, Update, FLIR, FLIR- Focus distance
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[Pamella and Tyler]
We changed the FLIR Focus Distance for around 0.55 m.
Note: The old focus distance was 1.3 m.
We
tested this new focus distances and looks good. I attached a snap below.
Parameters: 0.1 A , 1.5 V and 38.4 C.
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Thu Jun 1 14:41:36 2023, Pamella, Update, FLIR, FLIR project - Test without the black wall.
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[Pamella]
Test without the black wall.
General test:.
11:15 am : Started running the code. Parameters: 0.11 A, 1.9V and
focus distance around 0.55m.
11:28 am : Started snapping the screen. Parameters: 0.12 A, 1.8V and 44.1 C .
First trying:
01:18 pm : Started testing and collection data. Parameters: 0.09 A, 1.4V. Reference position: (0,0).
01:28 pm : Started snapping the screen. |
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Fri Jun 2 14:28:40 2023, Pamella, Update, FLIR, FLIR project - Test without the black wall.
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[Pamella]
Test without the black wall.
Note: So today i collected data for some positions in axis Y (height) for starting
analyses and compares the triangles shapes. I tried keep the same parameters every time.
First position:
01:20 pm :
Started testing and collection data. Parameters: 0.10 A, 1.6V. Reference position: (0,0.05).
01:30 pm : Started snapping the screen. Parameters: |
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Thu Jun 8 14:51:58 2023, Pamella, Update, FLIR, FLIR- Distance
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[Pamella, Tyler]
Today we change the distance between the FLIR camera and reflector (3D-Mask with mirrors and light). Now the distance is
0.2032 m.
Note: This distance is just for take a snap most close possible but we need move again for a little far way because in this distance
we can't move up and down the reflector for have data to compare.
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Mon Jun 12 12:15:10 2023, Pamella, Update, FLIR, FLIR- Take data in the closest point.
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[Pamella]
Used the closest point possible for the reflector in front of the FLIR camera.
11:32 am : Turned on the electronic device
(current on) for started taking data.
11:50 am: Started checking the temperature and the parameters.
12:04 pm: Started taking snap
after waited for 30 minutes with the current on. Parameters: Current: 0.13A , Volt: 1.8V and Temperature: 51.4 C.
Note: This snap is in the |
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Fri Jun 16 16:17:13 2023, Pamella, Update, FLIR, FLIR - Change the position
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[Pamella]
Today I change the distance between the FLIR camera and reflector (3D-Mask with mirrors and light). Now the distance is 0.3282 m.
Note: In this distance is possible move up and down the reflector and take data to compare.
The focal point inside the reflector keeping
like little problem, every time I tried adjust this I got some triangles is not with "perfect emission" (looks like different than the others). Also if |
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Mon Jun 19 11:20:57 2023, Pamella, Update, FLIR, FLIR - Fixed some problems
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[Pamella]
08:59 am: Turned on the electronic device (current on) for started taking data.
09:37 am: Tried understanding the
error in the focal point. I realized the pillars was in the wrong place and because of that we got problems to keep the reflector in the correct position
to FLIR focus.
09:58 am: Started checking the temperature and the parameters.Changed the pillars to the original position (0.5645m) just |
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Fri Jun 23 15:47:06 2023, Pamella, Update, FLIR, Collecting data - Moving horizontal and vertical on screen. 6x
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[Pamella]
02:09 pm: Turned on the device (current on)
02:42 pm: Started taking snap on position one (Reference point: 0,-0.062).
Parameters:0.10A,1.5V,41.5C
I took multiplier snap on the same position for compare after on data analyzes. I just wanted one/two minute
break between the snaps. I did that same for every position.
02:55 pm: Started taking snap on position two (Reference point:-0.10,-0.062 |
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Tue Jun 27 15:18:26 2023, Pamella, Update, FLIR, New data collection
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[Pamella]
Yesterday, I did a new data collection. I could get a better data in this time and I realized than I need use some
angle on the reflector for got a better shot. I need do that because the FLIR camera just is able to get the triangle shape for complete if I keep exactly
in same line for center point on the camera but for the data now I need move the refletor to go up and go down. So wasn't working very well if I keep the |
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Fri Jun 30 15:57:28 2023, Pamella, Update, FLIR, Data and python code update
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[Pamella]
Updates: Problems with the emission intensity and python code.
Yesterday I was working on get data from FLIR
reflector but unfortunately we got some problems:
I realized than if I move the reflector a to left or right the screen
doesn't get data very well(I attached a photo below). This is a problem because our idea is have the same type of emission every part on screen. Tyler |
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Fri Jun 30 16:43:14 2023, Pamella, Update, FLIR, Updates: Small moving the FLIR camera
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[Pamella]
Today, I was able to make some adjustments to the FLIR camera angle, suggested by Dr. Richardson, and we got small possible movements
keeping the same pattern in the shapes of the triangles. I have attached photos below. I was able to move left and right as well as up and down and it
worked in four points that I marked on the table.
The only problem is that it only worked on a part of the screen, if I try to place it farther |
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Mon Jul 3 18:38:13 2023, Pamella, Update, FLIR, FLIR project
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[Pamella]
I was able to work on the python code to do analysis on the FLIR-Reflector data.
I could plot images of total area (Tyler
help me on that) with csv file and also could have isolation area for triangles. I have attached examples below. Just for now the images are of different
data, so there are some differences in the shapes.
I'm working on getting a complete analysis code to work with the different positions of the |
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Tue Jul 4 15:35:38 2023, Pamella, Update, FLIR, FLIR - reflexion problem
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[Pamella]
I was testing all the positions we need to cover when moving the FLIR camera or the reflector. I tried to find out more about the problem so
I tested the position without the mask, just with the old bridge and I got the same problems, in the middle of the screen we have a very good image but
if we move we have the visualization problem and we don't see the reflection very well (intensity, emissivity) in FLIR.
For this test I used very low |
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Thu Jul 6 18:03:19 2023, Pamella, Update, FLIR, FLIR project - New configuration
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[Pamella]
Cao suggested using the project without the reflector and mask because in this case we probably got good images around the screen. So I started
this yesterday and today I started to get some data to see the stabilization position and check how the parameters fluctuated. I was looking and taking
snaps for an hour and a half. I'll repeat this one more time to make sure we have enough data to do analysis.
To do: The next step is to start |
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Sat Jul 8 14:26:17 2023, Pamella, Update, FLIR, Data with the new configuration without the mask and reflector. 6x
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[Pamella]
I started collecting data by moving the camera FLIR and covering all six positions on the screen (2x3). I was looking and taking snaps for more
than one hour and a half. I'll repeat this one more time to make sure we have enough data to do analysis.
I attached snap data below. This images is
processed on python code. |
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Fri Jul 14 16:49:42 2023, Pamella, Update, FLIR, New bridge and calibration data
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[Pamella]
Aiden 3D printed a new bridge for the heater and I installed the new bridge yesterday.
I started collecting data to plot
a calibration with the heater. I'm doing measurements with current and the thermocouple (thermometer) to compare with FLIR measurements and have a good
calibration. |
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Mon Jul 17 11:46:24 2023, Pamella, Update, FLIR, Thermocouple plot.
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[Pamella]
I collected data to plot a calibration with the heater. I took measurements with current and temperature (the thermocouple - thermometer)
to compare with the FLIR measurements.
I made a plot with this data and we can see how temperature vs current behaves.
Note: This data
I measured manually.
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Tue Jul 18 16:04:26 2023, Pamella, Update, FLIR, Setup FLIR with black wall (black body)
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[Pamella]
Today I tried get data the heater with the black screen but doesn't looks possible have just one "energy" point straight to FLIR camera.
Tyler and I tried different current and temperatures but keep very bad data. I attached a snap below.
I attached a photo about the new setup
below. The FLIR is in the most close point possible/safety with the heater. The heater is very close to the black wall but is not touch the screen so is |
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Tue Jul 18 16:12:27 2023, Pamella, Update, FLIR, Thermocouple plot.
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I noticed that these measurements have some issues with the weather on different days. We can see in the photo attached below how different the
temperatures are on different days, I took the data with the same procedure every day, but we can see the differences between them.
To Do: I
will do a new data collection using FLIR and thermocouple at the same time to plot comparison between both.
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Tue Jul 18 16:35:06 2023, Pamella, Update, FLIR, Plot-Data with the new configuration without the mask and reflector.
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[Pamella]
I was able to plot the first graph for a result between the six different positions on the screen, for now we can see the behavior
of the heater temperature in a Gaussian graph with combination data between the six files.
To do: Tyler gave me some ideas today to improve
the plot. So I'm going to change the code to have insulation on the values for just the heater ("insulation") and I'm going to plot after this insulation |