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ID Date Author Type Categoryup Subject Text Attachments
  99   Thu Oct 13 20:56:48 2022 Jennifer HritzGeneralOptical ContactingHot plate PWM v2.4,5 Test #3My two corrections ended up being huge
overshoots. The drop off time (100°C)
is correct, but the default rate increase
 PWM_v2.3_Test_#3_-_increase_180C_in_20_minutes.pdf 
  100   Fri Oct 14 21:36:52 2022 Jennifer HritzGeneralOptical ContactingHot plate PWM v2.6 Test #3The goal of "v2.X test #3" is
to heat the hot plate to 200°C over the
course of 20 minutes, and with v2.6, I have
 PWM_v2_Test_#3_-_increase_180°C_in_20_minutes.pdfPWM_v2.6_Test_#3_-_increase_180°C_in_20_minutes.pdfcycler_v1_graphs.zipcycler_v2_graphs.ziphot_plate_cycler_v1-2.6.zip 
  101   Sat Oct 15 21:59:13 2022 Jennifer HritzGeneralOptical ContactingHot plate PWM v2.6 Test #1, 2, 3I realized that, after changing so much
from v2.3 to 6, I should check that my first
two tests produce correct results with the
 PWM_v2.6_Test_#1_2_3_-_increase_180C_in_10_7_20_minutes.pdfPWM_v2.6_tests_data.zip 
  102   Sun Oct 16 14:20:32 2022 Jennifer HritzGeneralOptical ContactingSamples after 2 weeks under pressureSince I was focusing on the hot plate code
and therefore did not need my weights, I
decided to leave them on top of my samples
 2_weeks_pressure_PXL_20221004_190652540_20221017_074745619.jpg 
  103   Mon Oct 17 23:17:25 2022 Jennifer HritzGeneralOptical ContactingTesting PWM code with actual samplesNow that I have (relatively) good PWM code,
I wanted to do my first real test with actual
samples. Since everything went smoothly,
 first_real_PWM_test_samples_before_PXL_20221018_071840794.MP.jpgfirst_real_PWM_test_set_up_PXL_20221018_071943406.MP.jpgfirst_real_PWM_test_in_action_PXL_20221018_072832135.mp4 
  104   Tue Oct 18 19:33:38 2022 Jennifer HritzGeneralOptical ContactingSetting up thermocouplesFirstly, last night's heating did not
change the contacted surface area greatly,
but there is too many factors to speculate
 first_real_PWM_test_samples_before_after_PXL_20221018_080838426.MP.jpgK_Type_connector_PXL_20221019_000708969.MP.jpgthermocouple_plates_PXL_20221019_003002817.MP.jpg 
  105   Wed Oct 19 21:51:10 2022 Jennifer HritzGeneralOptical ContactingThe trials and tribulations of the thermocouplesI intended to test the new thermocouple
set up today, but when I plugged them in,
both did not read a temperature. It took
 thermocouple_connector_test_ciruit_PXL_20221020_035719119.MP.jpgcorrect_assembly_PXL_20221020_042855181.MP.jpgresistance_through_broken_and_fixed_connector_PXL_20221020_035951538_20221020_041939698.MP.jpgbroken_and_fixed_thermocouple_PXL_20221020_042242792_20221020_042201775.MP.jpgthermocouples_and_thermometers_room_temp.zip 
  106   Thu Oct 20 22:43:05 2022 Jennifer HritzGeneralOptical ContactingWired the thermocouples backwardsSince the two devices are giving different
temperature readings, I would like to find
out if this imprecision is linear (e.g. they
 wrong_correct_polarization_PXL_20221022_054250498_20221022_055117337.MP.jpg 
  107   Fri Oct 21 22:22:37 2022 Jennifer HritzGeneralOptical ContactingPWM v2.6 on new thermocouple set upI performed the same tests I have been
doing prior (+180°C in 10 minutes)
but now with the (correctly wired) thermocouples
 PWM_plates_-_increase_180C_in_10_minutes.pdf 
  108   Sat Oct 22 21:18:56 2022 Jennifer HritzGeneralOptical ContactingPWM v3.0With v3.0, I took a couple steps backwards
by getting rid of the feature that increases
the heating rate so I can isolate the base
 PWM_plates_-_increase_280C_in_10_minutes.pdf 
  109   Sun Oct 23 21:01:40 2022 Jennifer HritzGeneralOptical ContactingPWM 3.0 (+280C in 5)I decided test how fast the plates
would heat up if the heat was just on constantly
on for 5 minutes. In general, these tests
 PWM_plates_-_increase_280°C_in_5_minutes.pdf 
  110   Mon Oct 24 21:23:22 2022 Jennifer HritzGeneralOptical ContactingPWM 3.1 longer off times in cycleTo combat the bottom plate heating up much
faster than the top plate, I decided to try
increasing the cycle period from 1000ms (1s)
 PWM_plates_-_1000_ms_on_9000_ms_off.pdf 
  Draft   Tue Oct 25 18:55:38 2022 Jennifer HritzGeneralOptical ContactingPWM 3.1 very slow heating[I'm behind on data processing, but
I'm creating an entry on the day I actually
run the tests]
  
  112   Wed Oct 26 21:27:23 2022 JenniferGeneralOptical ContactingPWM 3.1 (more) very slow heating[I'm (once again) behind on data processing,
but I'm creating an entry on the day
I actually run the tests]
  
  114   Thu Oct 27 22:12:21 2022 ranaGeneralOptical Contactingplotting and PIDThe Arduino / AC PWM interface looks good.
I recommend that you maintain the code in
GitHub and post a link to the repo whenever
  
  118   Sat Jan 7 17:08:47 2023 Sophia AdamsGeneralOptical Contacting I am getting started on building the arduino
circuit as well as setting up my computer
so I can communicate between jupyter notebook
  
  119   Mon Jan 9 16:18:50 2023 Sophia AdamsGeneralOptical Contacting    arduinoRoomTempReading.jpg 
  125   Thu Feb 2 17:28:37 2023 Sophia AdamsGeneralOptical ContactingTest of Temperature Reading of One Plate

The arduino was able to read temperature
 bokeh_plot.pngIMG_3135.jpg 
  126   Mon Feb 6 15:36:39 2023 Jennifer HritzGeneralOptical ContactingPapers on making Q measurements of bondsUpper limits on the mechanical
loss of silicate bonds in a silicon tuning
fork oscillator​
  
  127   Fri Mar 24 20:27:46 2023 Jennifer HritzGeneralOptical ContactingControlling hot plate and recording temperature with one ArduinoPreviously, we had one Arduino taking the
two thermocouple readings and another, separate
one controlling the PWM of the hot plate.
 one_arduino_to_rule_them_all.png 
  131   Mon Jun 26 13:53:40 2023 Sophia AdamsGeneralOptical Contactingcantilever geometry to find the quality factor of a silicon bondI am trying to design a cantilever setup
to find the quality factor of optically bonded
silicon. The cantilever will be given an
 Picture1.jpg 
  133   Tue Aug 22 10:16:54 2023 Sophia AdamsGeneralOptical ContactingMatlab fminsearch Cantilever Geometry OptimizationI am trying to use fminsearch to find the
best cantilever dimensions to maximize the
bond/cantilever energy ratio. Fminsearch
 getEnergy.mgetRatio.mfminSearch.m 
  134   Tue Aug 22 12:12:05 2023 Sophia AdamsGeneralOptical ContactingMatlab fminsearch Cantilever Geometry OptimizationThe code works now. If the function is
specified by a file, there should be an @
symbol front of it when it is passed into
  
  135   Tue Aug 22 13:14:22 2023 Sophia AdamsGeneralOptical ContactingMatlab fminsearch Cantilever Geometry OptimizationRestricting the search to nothing less
than the initial parameters (L = 2 cm, h
= 0.3 mm, d = 0.55 mm), fminsearch outputs
  
  136   Wed Aug 23 11:13:58 2023 Sophia AdamsGeneralOptical ContactingMatlab fminsearch Cantilever Geometry OptimizationI am trying to get a plot of the fminsearch
data, but I was not sure how to extract the
data. But fminsearch has built in plots that
 fminsearch_fvalplot.figfminsearch_graph.pdf 
  137   Wed Aug 23 16:34:47 2023 Sophia AdamsGeneralOptical ContactingMatlab Cantilever Geometry OptimizationHere is the code to generate a random list
of parameters and evaluate the energy ratio
of each. 
 optimizingParameters.mRectangularCantilever.mph 
  2   Thu May 21 12:10:03 2020 StephenGeneralResourcesOngoing Mariner ResourcesOngoing points of updates/content (list
to be maintained and added)
Mariner
  
  23   Thu Aug 26 17:40:41 2021 StephenGeneralSuspensionSelecting MOS-style frame[Koji, Stephen]

Kind of a silly post, and not very
scientific, but we are sticking to it. During
 no_sos_cad_screenshot.pngvault_check_in_of_mariner_suspension_cad.png 
  45   Wed Nov 3 02:52:49 2021 KojiGeneralSuspensionMariner Sus DesignAll parameters are temporary:

Test mass size: D150mm x L140mm
Intermediate mass size W152.4mm x
  
  46   Thu Nov 4 00:42:05 2021 KojiGeneralSuspensionMariner Sus DesignSome more progress:

- Shaved the height of the top
clamp blocks. We can extend the suspension
 Screen_Shot_2021-11-04_at_12.38.46_AM.pngScreen_Shot_2021-11-04_at_12.39.53_AM.png 
  51   Thu May 5 19:56:25 2022 KojiGeneralSuspensionMariner Suspension Cryo shield Install / Removal stepsDoes this work? Is this insane?  40m_Mariner_Suspension-0062.png40m_Mariner_Suspension.mp4 
  52   Tue May 10 18:29:11 2022 ranaGeneralSuspensionMariner Suspension Cryo shield Install / Removal steps    
  53   Thu Jun 16 14:04:30 2022 JuanGeneralSuspensionTable for Mariner Suspension CryoToday we looked at possible locations for
where we will be setting up Mariner Suspension
and Cryo chamber. The first option was the
  
  54   Thu Jun 16 19:43:36 2022 KojiGeneralSuspensionTable for Mariner Suspension Cryo- B246/QIL Skyhook


Find the base of Skyhook.
It should be in the storage room (B246).
  
  55   Thu Jun 23 21:11:03 2022 KojiGeneralSuspensionTable for Mariner Suspension CryoTable moving effort in the OMC lab: See
https://nodus.ligo.caltech.edu:8081/OMC_Lab/412

 
  
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