 Mon Aug 28 14:43:50 2023, Aiden, Update, VAC, Vacuum Chamber Baking Update 
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The PID controllers were turned off on Friday and the chamber was left to cool over the weekend. Just took data and it looks like signal to noise ratio
is pretty bad again. I do not know if this means we need a hotter bake or if the chamber needs some more time to cool down. I will overlay this data and
make sure to take a second set a bit later to compare. Some good news though is that the chamber has reached a pressure below 10e-8 torr with the full |
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Mon Aug 21 17:13:25 2023, Aiden, Update, VAC, Vacuum Chamber Baking Update
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Came in to take RGA data and found the turbo pump drawing .38 Amps. This was much higher than what it was on Friday. I investigated and found that
the breaker had flipped controlling the power strip that the scroll pump was on. The scroll pump was thus not running. I flipped the breaker back and turned
the scroll pump back on. I do not know if this will be a reoccurring problem as this has happened before, or if this was due to the storm. Either way the |
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Thu Aug 17 15:18:48 2023, Aiden, Update, VAC, VAC Heating System Update
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Relocated the PID controllers so that the heating tape could be plugged in. In the picture the left one controls the top half of the chamber along with
the RGA line and has its sensor on the lid near a fold. The right one controls the bottom half along with the turbo pump line and the bypass line and has
its sensor on the barrel of the chamber. The chamber is almost ready to bake again and just needs to have the full range gauges and RGA electronics box |
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Thu Aug 17 15:02:44 2023, Aiden, Update, VAC, VAC Heating System Update 11x
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Put the heating tape back on and made sure to have 4 coils around the barrel of the chamber. To make this happen I did not put any heater tape on the
ports but made sure to place some of the heater no more than 1 inch away from the ports. Also re-placed some of the heating sensors. For the PID controllers
there is one sensor placed on the lid and one sensor placed on the barrel. For the temperature alarms one sensor was placed near the flange of the turbo |
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Wed Aug 16 17:17:02 2023, Shane, Jon, Update, CDS, Binary input chassis powering correctly
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Binary input chassis passed power-on test, and is lighting up as expected. Binary output chassis also successfully powered on. AA and AI chassis not powering
on correctly, need to do some debugging to find the problem. |
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Wed Aug 16 16:55:40 2023, Shane, Jon, Update, CDS, external power supply cables finished
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| All four external power supply cables for the CyMAC chassis are now assembled. Using them now to test if chassis power up correctly. |
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Tue Aug 15 16:10:06 2023, Celeste, Update, TCS, 8/15/2023 Simulation Progress
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Tue Aug 15 16:04:23 2023, Aiden, Update, VAC, VAC Heating System Update 6x
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Pulled off the rest of the heater tape along with the aluminum tape left behind. The aluminum tape adhesive left behind a ton of junk on the walls
of the chamber. This is probably due to excessive heating. In order to get the adhesive off I sprayed a vector alpha wipe with acetone and wiped down the
walls. This took a lot of acetone to get it off.
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Tue Aug 15 13:32:37 2023, Sophia, Update, Scripts/Programs, Update on Laser Noise Data Collection and Analysis: Dynamic CSD and PSD Plots
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I have now fixed all issues that I was having this morning, and have added text boxes which show the peak values of both PSD's and the CSD alongside the
graphs. They also update continuously with the graph. This is shown in the top image. The laser was driven at 400Hz, and had 0.5V peak to peak voltage,
both of which appear correctly in the below graphs.
Now that the code is almost fully working (we will finish debugging the screenshot method later |
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Tue Aug 15 10:35:00 2023, Sophia, Update, Scripts/Programs, Update on Laser Noise Data Collection and Analysis: Dynamic CSD and PSD Plots
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I have successfully added a button to my graphics, but it has posed a strange issue with the CSD and PSD values. When I plot my original code, I still see
the pretty peaks that I was getting originally, while my new code (as shown in the video and in the last screenshot) is giving me more of a line. In my
code that gives the peak values, the CSD values also tend to fluctuate in this new code as well (shown in the first screenshot), before returning to the |
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Fri Aug 11 18:32:00 2023, Aiden, Update, VAC, VAC System Heating Update 11x
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[Dr. Richardson, Aiden] Large Update
Removed most of the insulation on the chamber in order to pull back some of the heater tape to get
to the flange connecting the bypass line to the valve under the RGA line. Most of the heater tape on the bottom half of the chamber was pulled off and
the rest will need to be removed as well in order to place the start of the heater tape on the barrel of the chamber rather than one of the flanges.
Engaged |
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Fri Aug 11 10:57:20 2023, Celeste, Update, TCS, 8/11/23 Simulation Progress
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Thu Aug 10 18:32:39 2023, Aiden, Update, VAC, VAC System Heating Update
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[Dr. Richardson, Aiden]
DO NOT TOUCH ANY VALVES ON THE CHAMBER. THERE IS A PRESSURE DIFFERENTIAL BETWEEN THE RGA LINE,
TURBO PUMP LINE AND THE MAIN VOLUME. THE TURBO PUMP WILL BE DESTROYED IF OPENED.
Closed the valves to the turbo pump line and RGA line.
Turned the turbo pump back on and saw that the pressure in the RGA Line and Turbo pump line was going down so there was no large leak within that line |
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Thu Aug 10 14:36:00 2023, Aiden, Update, VAC, VAC System Heating Update
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Came in to install one of the Full range gauges. Checked the temperature first of the cross and it was reading 30 C. After installing the gauge above the
RGA line the controller was reading 2E-1 torr. Installed the other full range gauge to confirm this and it also read that pressure. There may be a leak
so I will let it sit for a bit and then perform a Helium leak test. |
 Thu Aug 10 15:10:12 2023, Jon, Update, VAC, VAC System Heating Update
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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 Torr.
I think
we will have to manually inspect it. The most likely cause would be that the Viton seal around the lid overheated and failed.
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Thu Aug 10 14:13:38 2023, Celeste, Update, TCS, 8/10/23, Simulation Graphical Progress
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Wed Aug 9 17:35:26 2023, Shane, Update, CDS, Binary output chassis finished
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Finished the internal wiring for the binary output chassis today, which completes its assembly. Also secured ribbon cables and chassis lid with their respective
screws. Note: one of the spade lugs' internal metal piece is a little loose and had to be reinserted after falling out once. Seemed secure after this,
and I checked continuity on everything and it was all good. |
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Wed Aug 9 11:32:56 2023, Jon, Infrastructure, General, New power cables
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I delivered new NEMA 5-15 (120V / 15 A) power cables to the lab for the following items:
WS2 (cleanroom) cart - 10ft cable
Electronics workbench overhead LED - 10ft cable
Both PI heater controller sets - (2)
6ft cables
I installed the new cables on the WS2 cart and the workbench myself, and left the two 6ft cables (as pictured below) for Aiden |
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Tue Aug 8 17:03:22 2023, Shane, Jon, Update, CDS, Binary input chassis finished
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Finished assembly of the binary input chassis today, including DC on/off switch and LED installation. external cable assemblies still needed, but internal
work done. |
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Tue Aug 8 16:47:11 2023, Sophia, Update, Scripts/Programs, Update on Dynamic CSD and PSD Plots
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We have fixed our rapid plotting error, and realized that this has not been affecting our data intake! Below is a video of the code progressing, alongside
grabbed images of the raw data. The data is now continuous, and performs as we expect. Next, I plan to add a widget which will dynamically show the peak
values instead of them just being printed in the terminal after each iteration. (Ignore the red box-- it was from me struggling with a now fixed issue). |
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Tue Aug 8 15:31:26 2023, Aiden, Update, VAC, VAC Heating System Update 10x
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Vacuum Chamber equilibrium temperature for bake 3 are 126 C and 88 C for the chamber wall and turbo pump flange respectively. There were reached with
the PID controllers both being set to 150 C.
Also noticed some discoloration around the port insulation. It could be burned from being exposed
to the heater tape directly without insulation or it could be that the insulation, which looks much different, is depositing something around the ports.
The |
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Mon Aug 7 15:36:18 2023, Sophia, Update, Scripts/Programs, Update on Laser Noise Data Collection and Analysis: Dynamic CSD and PSD Plots 7x
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Today I was able to fix the red pitaya's plotting problem, and get my code to recognize driving frequencies from the function generator to within a 0.5
Hz estimation. The sinusoidal plots I have included are from sending a 1 Hz signal into the red pitaya to see the signal in real time. This allowed me
to see exactly where the system was messing up, and fix from the ground up. Once I had that working, I began to test sending in frequencies in the range |
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Mon Aug 7 13:58:46 2023, shane, Update, CDS, internal power supply cables done for AI chassis
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Finished assembling and installing the aLigo chassis internal power supply cables in the anti-imaging chassis today. Tested for continuity and everything
looked good. Chassis lid still secured with two temporary screws because I'm not sure what the correct size is. |
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Fri Aug 4 15:21:33 2023, Aiden, Update, VAC, VAC System Heating Update
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Checked on Bake 3 today and the temperature sensors read 126 C and 91 C for the chamber barrel and turbo pump flange respectively. These were reached while
the PID controllers were set to 150 C. |
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Thu Aug 3 18:03:42 2023, Shane, Jon, Update, CDS, Anti-Aliasing chassis complete
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We finished installing the internal power supply cables in the anti-aliasing chassis today, which concludes its assembly. Work on AI, BI, BO chassis still
underway. |
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Thu Aug 3 17:47:51 2023, Aiden, Update, VAC, VAC Heating System Update
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Did some further testing to determine if it was within reason to increase the temperature of the chamber. I used a thermometer and pulled back some
insulation to test many points on the chamber. Mainly focused on the barrel and the bottom lid of the chamber to see if it was possible to increase the
temperature of just the PID controller that is powering the bottom half of the chamber.
Found that the barrel of the chamber seems to be hotter |
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Thu Aug 3 16:00:25 2023, Aiden, Update, VAC, VAC System Heating Update
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Check on the temperature of the bake today to see the equilibrium temperatures. With both of the PID controllers set to 150 C, the temperature sensors for
the wall of the chamber and the flange in front of the turbo pump read: 125 C and 90 C respectively. At these temperatures the bake would need to last
at least a week unless the temperature were to be increased. |
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Wed Aug 2 17:02:38 2023, Aiden, Update, VAC, VAC System Heating Update
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Moved the temperature sensor on the PID controller to one of the switch backs on the lid.
Also started the next bake with both PID controllers
set to 150 degC. When leaving the temperature sensors above the chamber read 119 C and 83 C. These sensors are on the chamber wall and flange in front
of the turbo pump respectively.
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Tue Aug 1 16:22:35 2023, Celeste, Update, TCS, Graphical Updates to HOM RH Modification, Tuesday 8/1
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| Slides 20-33 are newly added (data/graphs from parameter sweep feature-1/8th heater unit length varied from 10% of original to 100% of original). |
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Tue Aug 1 15:44:31 2023, Sophia, Update, Scripts/Programs, Update on Laser Noise Data Collection and Analysis: Dynamic CSD and PSD Plots 6x
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We have identified two problems facing the intensity noise calculations, which we are working to solve.
The first of these problems, is that the red
pitaya appears to be taking data approximately 4 times faster than we would expect from the decimation rate based on how quickly it runs. To see if this
was affecting our data, we plugged the red pitaya into a function generator. We found that my code is able to identify the driving frequency, but consistently |
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Tue Aug 1 12:48:41 2023, Aiden, Update, Cleanroom, Pre Filter Change
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Changed the pre filter inside of the 3 stage HEPA system next to the soldering station. It was rather dirty and I have attached images with a clean
filter on the left and the used one on the right. I reset the pre filter age on the system. I tried to see if I could tell if the HEPA filter was dirty
but I could not see it. I did not reset the age of the HEPA or UV stations. They are currently 378 days old.
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Tue Aug 1 12:10:03 2023, Aiden, Update, VAC, Vacuum Chamber Baking Update
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Dr. Richardson and I took off the insulation on the lid again to add more insulation in-between the heater tape folds in addition to what was added
on top of the tape after discovering discoloration. Also cleaned the lid with IPA wipes.
Also took more RGA data, one with the leak closed
and one with the leak open. The graphs below this show that the SNR is improving with the ratio now looking to be around 3. The chamber is still too dirty |
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Mon Jul 31 19:27:30 2023, Sophia, Update, Scripts/Programs, Update on Laser Noise Data Collection and Analysis: Dynamic CSD and PSD Plots
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An update on the CSD/PSD code:
The code is now taking a dynamic average of the points, and that has significantly reduced the noise that we were reading
and the issues I was having with the lines in the plots. The graph for the CSD is still putting up a fight though, and amassing many lines that do not
appear when just scatter plotted. I plan to fix that tomorrow, alongside inserting my own generated signal into the data. I have plotted the coherence |
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Mon Jul 31 12:39:01 2023, Shane, Update, Electronics, LED cable assemblies installed
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| Today I put together the two LED cable assemblies for the CyMAC and mounted them in the anti-aliasing and anti-imaging chassis. |
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Fri Jul 28 18:03:07 2023, Pamella, Update, FLIR, Final plot - FLIR
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[Pamella]
I was able to plot the final result with the data to the heater. I attached below the "3Combined_HighTemp_Gaussian_Plot." in
this plot we can see better behavior on the Gaussian compared to the plot in ELOG 169, I was using the same data but with a different approach. On the
ELOG 169, we have the center point isolated data and this new plot is the temperature more than 70 C isolated because we have a very good heater temperature |
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Fri Jul 28 17:45:45 2023, Celeste, Update, TCS, Graphical Updates to HOM RH Modification, Friday 7/28
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| Updated 1/8th Heater simulation modification graphs. Slides 7, 10, 16-19 are new additions. |
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Fri Jul 28 13:46:17 2023, Aiden, Update, VAC, Vacuum Chamber Baking Update
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Took some more data to look at the HC count. Initial data was from leaving the Argon leak closed and then left it open for 15 minutes and then took
data for the open scenario. Attached are the graphs for these where attachment 1 is the closed scenario and attachment 2 is the open scenario.
From
these graphs it looks like the signal-noise ratio of our calibration line is poor with the ratio between these two being 1.3. This means that the calibrated |
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Fri Jul 28 13:39:39 2023, shane, Update, Cleanroom, full 5 zone cleanroom particle count
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| Here's the 5 zone cleanroom measurement from today. |
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Fri Jul 28 13:07:39 2023, Shane, Aiden , Update, Cleanroom, cleanroom cleaning and particle count 6x
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[Aiden, Shane]
cleaning cleanroom and particle count
11:08 am: started particle count
zone 3: 0.3 u: 4198 0.5 u: 1080 1.0 u: 581
zone
4: 0.3 u: 12470.5 u: 6231.0 u: 415
11:24 am: break for removal of vac chamber insulation (pictures |
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Thu Jul 27 14:46:55 2023, Shane, Jon, Update, Electronics, AA chassis DC on/off switch assembled
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| Made the first DC on/off switch assembly today and installed in anti-aliasing chassis. Second switch assembly to be completed later. |
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Thu Jul 27 14:11:42 2023, Sophia, Update, Scripts/Programs, Update on Laser Noise Data Collection and Analysis: Dynamic CSD and PSD Plots
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Here's a screen recording of the dynamic raw data and PSD/CSD plots as they are now. Will begin working on implementing a code to generate the statistical
estimator for the CSD uncertainty now. (Will talk to Tyler more about whether I can get the lines to happen or not) |
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Thu Jul 27 11:28:36 2023, Sophia , Update, Scripts/Programs, Update on Laser Noise Data Collection and Analysis: Dynamic CSD and PSD Plots
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This week I have successfully been able to implement our dynamic CSD and PSD plotting code, but along the way I encountered a few challenges which I will
outline in this elog post.
Challenges:
1. Once I was able to plot the data through time, I produced a graph of the raw data (shown below in the top
to images) which showed pulsed data instead of a continuous stream. On Tuesday (26th of July) Tyler and I fixed this issue, realizing that calling the |
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Thu Jul 27 10:18:43 2023, Celeste, Update, TCS, Graphical Updates to HOM RH Modification
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| Attached are updated graphs of the irradiance distribution from the 1/8th ring heater units (extruded and reduced in length). |
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Tue Jul 25 15:35:14 2023, Shane, Update, Electronics, More chassis moved
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Finished basic assembly of binary input and output chassis today, and moved one to top shelf of work bench. The other is in corner of work bench (image
attached). They are delicate, so please do not move them or place anything on top of them. |
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Mon Jul 24 16:19:29 2023, Shane, Jon, Update, Electronics, Chassis semi-assembled and moved
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Began assembly on AA and AI chassis today, moved them both to top work bench shelf (image attached). They are delicate so please do not disturb them or
put anything on top of them. |
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Mon Jul 24 14:55:53 2023, Jon, Update, VAC, Removed extension power cable
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I removed the extension cable that was powering the leftmost heater controller, since there is no bake currently happening. It is currently powering the
LED over the electronics bench, and can be removed if needed. I will be ordering more extension cords to permanentize our setups. |
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Thu Jul 20 21:00:23 2023, Pamella, Update, FLIR, Data plot FLIR and updates about the black body
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[Pamella]
Today I got more data to plot the Gaussian. So I took more snaps in each position for the six different spots than we be using to have
a better calibration of the FLIR collected data. I attached the new plot below. Also, I did the same plot for each region as on the Elog 167 but I have
more than 20 pics because I was using a big number of data so I just attached one example below.To access the Elog, click |
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Thu Jul 20 18:03:19 2023, Aiden, Update, VAC, Vacuum Chamber Baking Update
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Took another set of RGA data after the second bake has cooled down to 27 degC.
Just by visual comparison to the other graphs, the HC levels
of the chamber has gone down further. I will soon overlay the data for an easier comparison.
I also reinstalled the full range gauge above
the RGA line. It is still adjusting itself downwards so I will have to check again to get an accurate measurement of the pressure.
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Wed Jul 19 19:10:31 2023, Pamella, Update, FLIR, Data plot FLIR and updates. 8x
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[Pamella]
Today I was able to plot a graph for the isolation point on the center of the heater. I got data from six different positions on the
screen (I shifted the all coordinates). I extracted the data for the center point and plot the Gaussian with this extracted data for temperature. I attached
the all plots below
Also I took a snap using the black wall and with the heater at 120.1 C (0.30 A) try to have less noise but
we can see |
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Wed Jul 19 14:39:19 2023, Pamella, Shane, Aiden, Update, Cleanroom, cleaning and particle count
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[Pamella, Shane, Aiden]
cleaning cleanroom and particle count
1:10 pm: started particle count
Zone 3: 0.3 u: 2535 0.5 u: 2071.0 u: 41
Zone 4:
0.3 u: 7890.5 u: 411.0 u: 0
1:30 pm: began surface check and wipedown
1:41 pm: started vacuuming |
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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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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 |