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ID Date Authordown Type Category Subject
  8   Fri Jul 22 13:20:28 2022 PhoebeUpdate Comsol
I will be using comsol until 1:30 pm today. I will be updating the model for the heater mount to be thicker in certain areas, so that it can feasibly be 3D printed. Specifically, the radius of the center cartridge mount has been increased to add thickness to the pipe and the arms of the bridge. This will allow us to print with a much smaller chance for error, as the printer can print objects with a minimum length of 1 mm.
  16   Mon Jan 23 17:26:15 2023 Peter CarneyUpdateGeneralOven cleaning
Aiden and Cao Turned on the oven to 120 deg C for 12 hours. After 12 hours, put it at 200 deg C for 48 hours.
  21   Sat Feb 4 17:01:03 2023 PeterUpdateVLC ElectronicsLaser Data
Peter and Ryan took laser beam data. Configuration: 100mm focal length lens is ~100mm from lens. 150mm focal length lens is ~200mm from first lens. Beam waist is ~420mm from second lens. Beam waist is very small still. Had to input large amounts of error in data collection. Took width data successively at points near waist and at >= Rayleigh range. Plots are shown below. Key points: Took a while to figure out optimum configuration for lenses to be placed so that an accessible beam waist could be obtained. Beam waist is still very small. May need to do an ABCD calculation to see if there is anything bigger that can be obtained.
  36   Tue Feb 28 19:31:05 2023 PeterUpdateVLC Electronics532 M2 Measurements
Took M2 measurements today. Configuration: Lens 1 (f = 50mm) at 0mm. Lens 2 (f = 150mm) at 200mm, camera at 350mm. The laser beam was being moved in -z direction on track (so further away from the first lens). Quick data shown in the sheets plot. Not a real fit. I was trying to see where the beam waist was if there even was one. Seems that it is much further than we have room for on the track. Will need to come back and take more data. I suggest maybe Dr. Richardson or Cao come and see the configuration in person and how the beam diverges for themselves on the detector card. Maybe they can offer pointers to make this go smoother.
  37   Tue Feb 28 19:33:51 2023 PeterUpdate 532 M2 Measurements
Y axis of plot in units of micrometers. X axis in units of millimeters.
  48   Thu Mar 9 12:03:59 2023 PeterUpdateVLC Electronics532 M2 Measurements
Took more M2 Data today. Picture of the optical set up is shown below. lens1 f = 100mm, lens2 f = 50mm, lens3 f = 150mm. There was a nice converging/diverging beam profile, and the beam waist was able to be read by the camera. I took as much data as I could before clipping loss. The M2 value is quite high.
  50   Fri Mar 10 12:08:09 2023 PeterUpdateVLC Electronics532 M2 Measurements
Took more M2 laser data today. The configuration is the same as before except now the beam camera is the only component moving. Pictures can be seen below. The beam shape in x and y is very consistent with low error. However, the M2 value is still a bit high.
  61   Tue Apr 4 09:39:58 2023 PeterUpdateVLC Electronics532 M2 Measurements
Final M squared measurements were taken Wednesday, 3/29/23 by Peter and Ryan Hinosawa. 5 separate sets of data were taken, and upon discussion, we declared the plots shown below in attachment 1 and 2 as the final plots of our M squared measurements. The optical design of the M squared measurement process is given in attachment 3. The laser and three lenses shown below are mounted on the optical table. The track is placed behind the third lens, and the camera is moved along the track to take successive measurements of the beam's width. This will allow us to see a change in the beam's width over its propagation direction. The raw data is given in attachment 4 as a Beam_Data_8_3lens.txt file. This is eventually what gets used to generate the plots shown below. The code to run the analysis on these measurements (as well as analysis on the Gaussian intensity profile fitting) can be found: git@git.ligo.org:uc_riverside/visible-light-cavity.git
  62   Tue Apr 4 09:53:37 2023 PeterUpdateVLC UpdateLaser intensity/polarization drift measurements
The set up for the next round of beam characterization measurements has begun. The beam is initially passing through a half waveplate, is split at a polarizing beam splitter, and then stirring mirrors are used to properly aim the beam into photodiodes (not yet installed). This is the current configuration of the set up.
  65   Thu Apr 6 10:20:43 2023 PeterUpdateVLC UpdateLaser intensity/polarization drift measurements
More optical components were added to the optical set up for laser intensity / polarization drift measurements. Both lenses and both PDs were added to the configuration, as seen in the image below. The beam is already well aligned into the center of both of PDs, and focused nicely by the lens. Both PD's take BNC connecting cables, and the Red Pitaya takes SMA connecting cables. Since we are currently without a BNC to SMA cable, and we do not want to cut, strip, and crimp what we have, then measurement process cannot proceed until we get the cables.
  83   Fri Apr 28 11:21:01 2023 PeterUpdateVLC UpdateLaser intensity/polarization drift measurements
The Digi-key cables have arrived, and I have began implementing them in the intensity drift measurements. There was a slight problem initially in connecting the SMA to BNC cables from the photodiode to the red pitaya, since the red pitaya was way on the other side of the lab. Cao and I connected the red pitaya to a new ethernet cable that extended far enough for the red pitaya to sit comfortably on the breadboard with the optics. Right now the PDAs are not connected to the red pitaya. I have connected them to the oscilloscope in order to read out how much voltage they produce upon incidence of 532nm laser light. This was done in order to make sure that they do not surpass the limit of the red pitaya (+-1V). I have not acquired a value for the readout voltage of the PDAs since I had to go to class. I will gather this preliminary data soon.
  88   Mon May 1 18:56:57 2023 PeterUpdateVLC Electronics532nm 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 oscilloscope showed that the voltage reading from the P polarization PDA was almost at 1V, which was the limit of the red pitaya. Once both S and P polarization PDA's were connected, I opened the red pitaya's oscilloscope. A screenshot of the voltage readings is shared below. Channel 1 (Yellow) is for S polarization. Channel 2 (Green) is for P polarization. It would seem that there is a significant amount of polarization in the P direction as opposed to the S direction. I then tried running the template time series measurement within the python notebook from channel 1 only. The python notebook graph is shown below. I have not figured out what are the units of time on the x axis, and I have not figured out how to change the amount of time that the red pitaya takes data. A plot of the time series measurement is shown below.
  89   Tue May 2 15:55:33 2023 PeterUpdateVLC Electronics532nm 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, which changed the respective polarization power transmitting through S and P polarization. Initially, more power was coupled into the P polarization. Now, with the 1/2 plate rotated, both channels are experiencing the same voltage reading. Before feeding the PDA signals into the red pitaya, a 50 ohm terminator had to be placed at the SMA connection port so that the input power into the red pitaya did not exceed 1V. With this configuration, both channels experience about 0.35mV. (See attached) I then opened the Jupyter notebook, and ran a demo time series measurement from the red pitaya. This time, I was able to get a plot featuring both channels (green is P polarization. Blue is S polarization). The plots are consistent with what is shown in the red pitaya oscilloscope. However, the time collection (I'm assuming) only runs for about 0.018s. I will have to write some of my own code to loop over this measurement, and collect more data.
  92   Thu May 4 14:01:10 2023 PeterUpdateVLC Electronics532nm 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 shown below of the oscilloscope indicate that this is not possible. The minimum transmitted power we can obtain in either S or P polarization is 75mV. The maximum voltage we obtain in either S or P polarization is ~ 740mV. This means that at a maximum, we can obtain ~ 90% polarization in either direction, indicating that our laser has a slightly elliptical polarization.
  99   Tue May 16 11:56:33 2023 PeterUpdateVLC Electronics532nm Intensity Measurement
With the configuration the exact same as before, I used the Jupyter notebook in the red pitaya's development package to collect data from both input channels. Last week, I was able to take data, yet only for a very short period of time, and I did not know how to change it. I went online to the red pitaya's user manual to figure out how to change the sampling period for longer. The link to the page is here: https://redpitaya.readthedocs.io/en/latest/appsFeatures/examples/acqRF-samp-and-dec.html#s-rate-and-dec Though I now know how to change the period of time for which data is taken, the maximum amount of time is still only about 8 seconds. So with help from Cao, we looped over the data taking samples, and got a mean value for each iteration. We then put all those mean values in an array, and plotted it. Below, we see a plot of both the S and P polarizations, and a sum of both of them. As seen in the graph, I have set the time to be able to take data for almost 2 minutes. There is some slight drift in the respective intensities. The next steps I believe are to convert the units into watts, and take data for longer periods of time.
  101   Thu May 18 14:07:08 2023 PeterUpdateVLC Update532nm Intensity Measurement
I figured out a method in which to capture power measurements including the initial seconds in which the beam is first turned on. I first clear and restart the kernel of the python notebook. Then I run the command to connect the red pitaya oscilloscope package to the input data being taken in both channels. To my understanding, this allows for data acquisition as the code compiles. I then started looping the 1.074s trigger bunches, and then roughly 2 seconds after I ran that command, I went and turned on the laser. The first plot shown is a 2 minute practice trial of me trying this technique to make sure that the python package was correctly registering the input of the red pitaya. It is clear that initially the laser is off, and then as I turned it on, the voltage in each channel spikes, which is compelling evidence that the code is working. I then set the data collection to be 7518 seconds (7000 loops), which is about 2 hours and 5 minutes. I repeated the same technique as for the first plot, only changing the amount of time I collected data. The second plot shown here is the voltage being read in each channel as a function of time. As we can see, over a period of hours, the intensity drifts quite dramatically for the first several minutes, and then begins to stabilize slightly. However, there are still some strong sudden fluctuations in each channel.
  102   Mon May 22 16:43:28 2023 PeterUpdateVLC ElectronicsLaser intensity/polarization drift measurements
In order to fully analyze the polarization data taken last Thursday, I needed to convert the signal output (which is in volts) to power (units of watts). I used the power meter to accomplish this. Keeping the exact same configuration of PD's and beam splitting, opened the red pitaya's oscilloscope package. I then took the power meter, and held it in front of the PD to measure the amount of Watts at each PD. I then wrote down the corresponding voltage being seen in the red pitaya. I took 5 sets of measurements for each PD to get experimental accuracy. I then used a simple y = mx + b fit to find out the constant m that converts the input wattage into voltage. For the s polarization, the conversion factor is 0.83. For the p polarization, the conversion factor is 1.12. I then used this data to plot polarization angle as a function of time, and the relative intensity drift as a function of time. The plots are shown below. The physical meaning of the polarization angle is shown in the unit circle diagram below, in which P is the total power.
  107   Wed May 24 14:28:26 2023 PeterUpdateVLC ElectronicsLaser intensity/polarization drift measurements
I went in and took polarization drift data for 16 hours. The run started at 6:08pm and finished at 9:15am the next day. The four plots below are the same plots shown for the 2 hour collection and previous trials, except they extend to 16 hours. The only one that is different is the Power vs. Time graph. This is a graph of the actual incoming power of the laser (as opposed to the signal voltage that the PDA's output into the red pitaya). This was done using the calibration factors of the respective PDA's and as we can see, since there is a difference in the calibration factors between detectors, there is a difference in the power that's coupled into S and P polarization.
  116   Tue Jun 6 16:15:09 2023 PeterUpdateVLC UpdateLaunch Optics for Visible Light Cavity
I assembled the first few components of the launch optics for the visible light cavity. Below is an image of the current table configuration, and the image is how the cavity will be oriented on the table.
  221   Thu Sep 7 19:24:25 2023 PeterUpdateVLC UpdateVLC Launch Chain
The launch optics up to the Faraday Isolator have been added to the breadboard. In the first image, the optics are (from L to R) the stirring mirror, half-wave plate, polarizing cube, 100mm f lens, electro-optical modulator, Faraday isolator, 50mm lens (not part of final design), stirring mirror (not part of final design)
  234   Mon Oct 9 11:06:17 2023 PeterUpdateVLC UpdateVLC Launch Chain
Implemented the new stage for the EOM. Took power data at different positions in the launch chain. Beam waist: 0.066mm (beam waist is inside EOM). Power before EOM: 0.473mW. Power after EOM: 0.452mW. Power after Faraday Isolator: 0.415mW. Might need to adjust better to configure for clipping losses. Images of setup are attached below.
  242   Mon Oct 23 07:28:57 2023 PeterUpdateVLC UpdateVLC Mode Matching
I have attached a pdf with slides of my latest updates.
  256   Mon Nov 6 11:31:25 2023 PeterUpdateVLC UpdateVLC Mode Matching
See Update Attached
  263   Mon Nov 13 06:15:45 2023 PeterUpdateVLC UpdateVLC Mode Matching
Weekly Updates Attached in pdf
  288   Fri Dec 8 11:15:21 2023 PeterUpdateVLC UpdateVLC Assembly
The optics of the visible light cavity have been assembled. The mode matching telescope is folded through the two stirring mirrors at the corners shown in the image below, with the first lens (f=0.2m) before the first stirring mirror, and the second lens (f=0.5m) between the two stirring mirrors. The distance from the cavity to the edge of the table is 14cm. There is still some work to be done on the alignment of the cavity, as the beam does not seem to be completely centered on the two mirrors.
  304   Tue Jan 16 10:01:21 2024 PeterUpdateVLC UpdateVLC Faraday Isolator and Mode Matching
Attached is a PDF of my weekly updates.
  321   Tue Feb 13 01:26:30 2024 PeterUpdateInterferometer SimulationsCARM Power Simulations
Cao's simulations of the circulating power and gouy phase through a single arm cavity of the interferometer have been reproduced. Images of the plots can be shown in the pdfs attached. There are approx. 400 lines in this code (scenario_3_carm) that produces these plots. This code also calls on a separate code source file (thermal_models) that defines many of the functions used in this main simulation. The thermal_models file consists of over 1000 lines. More work needs to be done to fully understand and document the scripts.
  360   Mon Apr 15 11:51:03 2024 PeterUpdateVLC UpdateVLC
An update on the VLC project is attached below:
  368   Mon May 13 14:53:29 2024 PeterUpdateVLC UpdateVLC
VLC Update WEEK 7 attached below
  147   Thu Jul 6 13:34:48 2023 Pamella, Shane, Julian, AidenUpdateCleanroomcleaning and particle count
[Pamella, Julian, Aiden, and Shane]

    cleaning cleanroom and particle count

  • 12:00 pm: started particle count
    • Zone 3:
        0.3 u: 2826
        0.5 u: 457
        1.0 u: 166
    • Zone 4:
        0.3 u: 457
        0.5 u: 83
        1.0 u: 41
  • 12:17 pm: began surface check and wipedown. NOTE: found a few ants crawling up the metal table frame and on the desk
  • 12:29 pm: started vacuuming the floor
  • 12:45 pm: Finished vacuuming the floor
  • 12:46 pm: Started mopping the floor
  • 12:52 pm: Finished mopping the floor
  • 12:55 pm: Started cleaning the buckets
  • 1:02 pm: Started mopping with IPA wipes
  • 1:11 pm: Finished mopping with IPA wipes
  • 1:12 pm: Changed sticky floor mats
  • 1:14 pm: started particle count
    • Zone 3:
        0.3 u: 2577
        0.5 u: 457
        1.0 u: 166
    • Zone 4:
        0.3 u: 457
        0.5 u: 41
        1.0 u: 0
  93   Mon May 8 12:00:03 2023 Pamella, Shane, JulianUpdateGeneralCleanroom particle counts and cleaning the cleanroom.
[Pamella,Julian, Shane]
    Today we cleaned the clean-room (floor, surfaces) and particle count.
    10:00 am: Started particle count.
  • Zone 3:
  • 0.3u: 1330
  • 0.5u: 540
  • 1.0u: 415
  • Zone 4:
  • 0.3u: 290
  • 0.5u: 83
  • 1.0u: 0
    Clean-room:
  • 10:30 am: Started wiping down the surfaces inside the clean-room
  • 10:41 am: Finished wiping down the surfaces inside the clean-room and Started vacuuming the clean-room.
  • 10:58 am: Finished vacuuming the clean-room.
  • 11:00 am: Started mopping on the floor.
  • 11:20 am: Finished mopping on the floor and started wiping on the floor.
  • 11:34 am: Finished wiping on the floor.
  • 11:35 am: Started the particle count.
  • 11:57 am: Finished the particle count.
  • Zone 3
  • 0.3u: 997
  • 0.5u: 290
  • 1.0u: 207
  • Zone 4
  • 0.3u: 374
  • 0.5u: 207
  • 1.0u: 207
  166   Wed Jul 19 14:39:19 2023 Pamella, Shane, AidenUpdateCleanroomcleaning and particle count
[Pamella, Shane, Aiden]

cleaning cleanroom and particle count

  • 1:10 pm: started particle count
    • Zone 3:
        0.3 u: 2535
        0.5 u: 207
        1.0 u: 41
    • Zone 4:
        0.3 u: 789
        0.5 u: 41
        1.0 u: 0
  • 1:30 pm: began surface check and wipedown
  • 1:41 pm: started vacuuming the floor
  • 1:55 pm: finished vacuuming the floor
  • 1:57 pm: started mopping the floor
  • 2:01 pm: finished mopping the floor
  • 2:02 pm: started cleaning the buckets
  • 2:08 pm: started mopping with IPA wipes
  • 2:17 pm: finished mopping with IPA wipes
  • 2:18 pm: changed sticky floor mats
  • 2:19 pm: started particle count
    • Zone 3:
        0.3 u: 3990
        0.5 u: 1080
        1.0 u: 374
    • Zone 4:
        0.3 u: 540
        0.5 u: 207
        1.0 u: 0
  79   Wed Apr 26 18:05:41 2023 Pamella, Julian, ShaneUpdateCleanroomcleanroom particle counts and cleaning log
  • pre-cleaning particle counts:
    • zone 3
      • 0.3 mu: 2494
      • 0.5 mu: 748
      • 1.0 mu 124
    • zone 4
      • 0.3 mu: 374
      • 0.5 mu: 41
      • 1.0 mu: 0
  • 3:45 pm: Started wiping the surfaces(laser table,chamber, computer) inside the cleaning room.
  • 4:05 pm: Finished wiped the surfaces
  • 4:08 pm: Began vacuuming cleanroom floor
  • 4:28 pm: Finished vacuuming cleanroom floor.
  • 4:29 pm: Began mopping the cleanroom floor.
  • 5:15 pm: Finished cleanroom clean.
  • 6:00 pm: post-cleaning particle counts (full 5 zone measurement) attached below
  100   Wed May 17 12:18:08 2023 Pamella, Julian and Shane UpdateGeneralCleaning room and particle count
[Pamella, Julian and Shane]
    Particle count:
  • 10 am: Started particle count
    1. Zone 3 :
      • 0.3u: 1288
      • 0.5u: 332
      • 1.0u: 124
    2. Zone 4 :
      • 0.3u: 498
      • 0.5u: 166
      • 1.0u: 83
  • 10:40 am: Checked the surfaces inside the cleanroom.
  • 10:50 am: Started vacuuming the cleanroom.
  • 11:15 am: Started mopping the cleanroom.
  • 11:35 am: Started wiping the cleanroom floor.
  • 11:40 am: Finished cleaning the cleanroom.
  • 11:41 am: Started the particle count.
  • 12:17 am: Finished the particle count.
    1. Zone 3 :
      • 0.3u: 3782
      • 0.5u: 706
      • 1.0u: 207
    2. Zone 4 :
      • 0.3u: 374
      • 0.5u: 83
      • 1.0u: 83
  109   Wed May 31 11:42:16 2023 Pamella, Julian and ShaneUpdateGeneralCleaning room and particle count
[Pamella, Shane and Julian]
    Cleaning room and particle count
  • 09:58 am: Started the particle count
    1. Zone 3:
    2. 0.3u : 1,995
    3. 0.5u : 540
    4. 1.0u : 0
    5. Zone 4:
    6. 0.3u : 124
    7. 0.5u : 0
    8. 1.0u : 0
  • 10:25 am: Started checking the surfaces inside the cleanroom.
  • 10:30 am: Started vacuuming the floor.
  • 10:45 am: Finished vacuuming the floor.
  • 10:46 am: Started mopping the floor.
  • 10:58 am: Finished mopping the floor.
  • 11:00 am: Started wiping floor with polypropylene wipes.
  • 11:03 am: Started and finished cleaning the mop buckets.
  • 11:15 am: Finished wiping floor with polypropylene wipes.
  • 11:16 am: Changed sticky floor mats.
  • 11:20 am: Started the particle count.
    1. Zone 3:
    2. 0.3u : 2,951
    3. 0.5u : 872
    4. 1.0u : 207
    5. Zone 4:
    6. 0.3u : 374
    7. 0.5u : 83
    8. 1.0u : 0
  131   Thu Jun 22 13:58:00 2023 Pamella, Julian and ShaneUpdateCleanroomCleaning and Particle Count
[Pamella, Shane, and Julian]
    cleaning cleanroom and particle count
  • 12:00 pm: started particle count
    • Zone 3
      • 0.3u: 3533
      • 0.5u: 540
      • 1.0u: 166
    • Zone 4
      • 0.3u: 290
      • 0.5u: 124
      • 1.0u: 41
  • 12:31 pm: Started checking the surface inside the cleanroom and began surface wipedown
  • 12:50 pm: started vacuuming the floor
  • 1:05 pm: Finished vacuuming floor
  • 1:09 pm: Started mopping the floor
  • 1:21 pm: Finished mopping the floor
  • 1:22 pm: Started cleaning the baskets
  • 1:25 pm: Started mopping with IPA wipes
  • 1:39 pm: Finished mopping with IPA wipes
  • 1:41 pm: Changed sticky floor mats
  • 1:45 pm: Started particle count
    • Zone 3
      • 0.3u: 2327
      • 0.5u: 581
      • 1.0u: 207
    • Zone 4
      • 0.3u: 1662
      • 0.5u: 374
      • 1.0u: 290
  129   Tue Jun 20 22:14:24 2023 Pamella, CaoInfrastructureVACShort term testing of vacuum heater controller units
[Pamella, Cao]

Fuse replacement

  • Replace blown 10A fuse in ucontroller outside cleanroom
  • Replace 10 A fuse in main power connection slot of the controller unit inside cleanroom
  • Pamella wiped down unit outside cleanroom.
  • Controller units turned on and temperature setpoint set to be 80 deg C
  • Temperature settle in approx. 15 minutes(as recorded by the RTD). No problems with fuses observed
  • Recording of pressure gauges (in Torr) :
    1. Before turning heater on :
      1. Gauge 1(main chamber): 3.73E-7
      2. Gauge 2(RGA line): 3.65E-7
      3. Gauge 3(Pump line): 3.8E-4
    2. After 15 minutes :
      1. Gauge 1(main chamber): 7.07E-7
      2. Gauge 2(RGA line): 6.12E-7
      3. Gauge 3(Pump line): 3.8E-4
  • Reduce setpoint temperature to 60 deg C due to Pinrani gauge (Gauge 3) temperature limit
  • Upon returned to lab to reduce temperature (35 minutes after turned on):
    1. Gauge 1(main chamber): 1.22E-6
    2. Gauge 2(RGA line): 9.98E-7
    3. Gauge 3(Pump line): 3.8E-4
  • Once temperature has settled to 60 C (approx 20 mins after changing setpoint), pressure readout showed:
    1. Gauge 1(main chamber): 1.37E-6
    2. Gauge 2(RGA line): 1.10E-6
    3. Gauge 3(Pump line): 3.8E-4
  • Heater left on for the whole afternoon, pressure readout upon returning to lab at 5:30 pm:
    1. Gauge 1(main chamber): 3.43E-6
    2. Gauge 2(RGA line): 2.61E-6
    3. Gauge 3(Pump line): 3.8E-4

  34   Mon Feb 27 17:09:04 2023 Pamella UpdateGeneralVacuum Chamber Cleaning
Pamella and Julian finished cleaning the interior of the chamber, chamber lid, and the table. We found some black residue on the side of the table but not sure what the issue is. A picture of the specific area of the table that is giving off the black residue is attached below. The next step from here would be to flip the chamber on its side and finish the cleaning the exterior.
  35   Tue Feb 28 13:53:17 2023 PamellaUpdateGeneralVacuum chamber cleaning
Pamella, Dr. Richardson and Dr.Cao finished checking and cleaning the interior of the chamber, chamber lid, and exterior of the chamber with Vectra Alpha wipes, IPA and in some parts we used acetone . We flip the chamber and put chamber on the table again. A picture of the specific situation is attached below. The next step from here would be to finish the cleaning the floor . The black residues on the side of the table probably is some reaction between the Vinil and the wipes so is not necessary cleaning this part deeply.
  45   Mon Mar 6 18:48:43 2023 PamellaUpdateGeneralCleanroom update
Today Pamella and Julian finished cleaning of the new lab cabinets. Also we wiped the computer and put inside the cleanroom so now the computer is not move out side anymore. We saw some dirty parts in the cleanroom floor again and is possible for the next step we should be clearing the floor one more time. Possible is necessary order more IPA wipes for keep cleaning in nexts weeks. A photos of the cabinets and the computer are attached below.
  46   Wed Mar 8 18:35:52 2023 PamellaUpdate Lab cleaning
Today Pamella finished cleaning of the cleanroom, starting with the HEPA vacuuming, mopping and clearing all floor with IPA wipes. Also Pamella and Julian finished cleaning of lab floor, starting with the HEPA vacuuming and mopping. Shane and Pamella wiped down every surfaces of the laser table, computer table and the table with the vacuum pieces inside the cleanroom. Shane, Peter, Tayler, Pamella and Julian then wiped down every surface of the laser table outside the cleanroom. We wiped the main tabletop as well as the legs and all parts for the table. We wiped the computer desk, the boxes, the cabinets and every part outside the cleanroom. For now we finished the lab cleaning.
  57   Fri Mar 24 13:36:17 2023 PamellaUpdateGeneralClean and Bake batch 10
Today I bagged and tagged batch 10. I wiped the RGA vacuum component for around 25 minutes after that I bagged and tagged this part and put inside the cleanroom. The RGA vacuum component have a big size and because off that i used the big bag. I wiped one power cable (2 meters), bagged and tagged that and inside the cleanroom. For the parts in the oven, a bunch of screws, I bagged and tagged the screws and put inside the cleanroom. I put photos below about this process.
  58   Wed Mar 29 16:00:36 2023 PamellaUpdateCamerasFLIR project
Today Pamella and Tyler started work in the updates for the FLIR project. We trie for the first time cover the mirrors with aluminum foil and run the code with this. We work in figured out how the python codes works with real datas. To do: Understand how get the real datas and how to compere that with the old datas. Starting test with the FLIR and mirrors with aluminum foil in with the power on. Testing the FLIR camera more times with the mirrors covered with aluminum foil.
  59   Fri Mar 31 14:23:13 2023 PamellaUpdateGeneralClean and bake batch 11
Today I bagged and tagged batch 11. I wiped the some tools: Centering ring alum( 2 pieces), reversible ratcheting, gasket removal (CF). After wiped that I bagged and tagged this parts and put inside the cleanroom. Also I wiped one power cable (3 meters), bagged and tagged that and inside the cleanroom. I put photo below.
  66   Fri Apr 7 09:48:09 2023 PamellaUpdateGeneralClean the system parts
Pamella and Julian wiped and tag system parts for the vacuum machine. We used isopropyl and vectra wipes in the most import pieces: Inverted magnetron pirani gauge and the air cooling kit 81. The other parts we uses the IPA wipe for cleaning. So for now we finished with ever system parts which was in the gabinetes. I put photos below. The photos is for all part we cleaning, tag and which puted inside the cleaning room.
  68   Tue Apr 11 17:56:15 2023 PamellaUpdateGeneralLab cleaning
Today Pamella and Julian finished cleaning of the cleanroom, starting with the HEPA vacuuming, mopping and clearing all floor with IPA wipes. Also we wiped down some surfaces of the blue table, computer table and the top of chamber.
  73   Wed Apr 19 17:39:50 2023 PamellaUpdateFLIRFLIR project
    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 now 3 cm distance to the black wall ( this is more close than the original position.)
  • Parameters : 0,348 A, 05,5 V and the temperature inside the mirrors 160,3°C.
  • 10:57 Finished this second tried and take a snap. The image is attached below.
  • The name for the picture for this tried is “AcquisitionImage(Apr-19-2023_10 57)”.
  • 11:03 Starting test another position 1.3 cm distance to black wall.
  • Parameters : 0,347 A, 05,5 V and the temperature inside the mirrors 158,7°C.
  • 11:18 Finished this second tried and take a snap. The image is attached below.
  • The name for the picture for this tried is “AcquisitionImage(Apr-19-2023_11 18)”.
    The next step should be fix the problem with the shape (aluminum foil lid).
  75   Fri Apr 21 15:21:18 2023 PamellaUpdateFLIR 
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 is between the black wall and the aluminum lid)
  • 2:26 pm : Finished this second tried and take a snap. The image is attached below.
  • The name for the picture for this tried is “AcquisitionImage(Apr-21-2023_14 26)”.
    Note: The second tried the temperature didn't up more than 40°C for 8 minutes so I change the current for a few seconds. I started with 0.98 A with 1.7 V and up until 0.350 A with 2.5 V, just for a few seconds and in this way the temperature up to 72°C and I get the snap.
      The next step should be understand the problem with the shape and work in changes for get the triangle in the FLIR image.
  76   Fri Apr 21 16:51:26 2023 PamellaUpdateGeneralCleaning cables.
Cables for the vacuum system.
  • Today i wiped, bagged and tagged two cables for the vacuum system. I used IPA wipes for cleaning this two split power cord. I attached a image below.
  104   Mon May 22 17:08:50 2023 PamellaUpdateFLIRFLIR project - Installing the mask.
[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, so is not able to do the cut with precious and carefully then maybe I need other tool for this job. Also I tried use the scissor, didn't work. However, just for the initial testing I worked with the not perfect triangles shape.
  • 2:49 pm: Started installing/attaching the light in the mask.
  • 3:21 pm: Finished installing the light in the mask-bridge.
  • 3:22 pm: Started testing the current and voltage in the new mask-bridge for make sure the light cable is working well.
  • 3:25 pm: Started measurement the resistance with multimeter.
  • 3:29 pm: The measurement looks fine. The multimeter show us 14.1 Ω;
  • 3:38 pm: Started putting the reflector( with the mask attached) in front of the black wall.
  • 3:44 pm: Started roll the testing with the python code to observer the behavior with this new mask. Parameters: 0.14 A and 1.9 V.
  • 4:00 pm: Started snapping. Parameters: 0.13 A and 1.9 V. Final Temperature: 42.7 C.
  • 4:02 pm: Started trying again with more current. Parameters: 0.16 A and 2.2 V.
  • 4:36 pm: Started snapping. Parameters: 0.16 A and 2.2 V. Final Temperature: 50.3 C.
  • 4:55 pm: For now, we can't see the triangles in the snap so i need do some changes.
  • To do:
    1. Change the FLIR camera position for the other side on the table.
    2. Start the test without the black wall.
    3. Try a better tool to cut the triangles inside the 3D-mask.
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