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ID Date Author Type Category Subjectup Text Attachments
  8   Wed Mar 24 17:36:46 2021 PacoGeneralDesign specsLeast common multiple stacks and varL costUpdate on ETM/ITM coating design;

-
Following what seemed like a good, intuitive
suggestion from Anchal, I implemented a parameter
 ETM_Layers_210323_0925.pdf 
  83   Wed Sep 28 22:11:31 2022 Jennifer HritzGeneralOptical ContactingLooked at Thor Lab slidesWhile finalizing my work plan for the quarter,
I decided to look at the Thor Lab slides.
This was instructive because they highlighted
 thor_lab_slides_first_bond_PXL_20220929_045352675.MP.jpgthor_lab_slides_after_attempting_to_expand_bond_area_PXL_20220929_045510075.MP.jpg 
  84   Thu Sep 29 18:36:40 2022 Jennifer HritzGeneralOptical ContactingLooked at Thor Lab slides (continued)Continuining with my casual exploration
of the Thor Lab slides, I heated them from
off --> low --> med --> high, with
 before_heat_PXL_20220930_011031420.MP.jpgset_up_PXL_20220930_011050114.MP.jpgright_after_heating_PXL_20220930_014301900.MP.jpgafter_4ish_hours_of_cooling_PXL_20220930_063533904.jpg 
  1   Thu May 21 11:51:44 2020 KojiGeneralGeneralMariner Elog TestThe first entry of the Mariner elog post   
  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    
  79   Fri Aug 26 14:24:57 2022 RadhikaGeneralHeat LoadMariner TM Cooldown modelHere I describe the current radiative cooldown
model for a Mariner test mass, using parameters
from the most recent CAD model. A diagram
 6x 
  80   Mon Aug 29 15:44:46 2022 RadhikaGeneralHeat LoadMariner TM Cooldown modelHere is a more detailed analysis of varying
the length and radius of the snout.

Attachment 1 plots the heat load
 VaryingSnoutparams.pdfMarinerTMCooldown_snout_optimal.pdf 
  81   Wed Sep 7 10:42:12 2022 RadhikaGeneralHeat LoadMariner TM Cooldown modelThe attached plot (upper) compares the
heat load delivered to the test mass from
various snout lengths (end to end), as a
 SnoutLengthCooldownTM.pdf 
  30   Fri Sep 24 13:12:00 2021 RadhikaGeneralHeat LoadMariner cooldown model status + next steps*Note: the current modeling script can
be found at: CryoEngineering/MarinerCooldownEstimation.ipynb

Nina pointed me to the current
  
  31   Mon Sep 27 17:01:53 2021 ranaGeneralHeat LoadMariner cooldown model status + next stepsHow
about a diagram so that we can understand
  
  32   Wed Sep 29 16:15:19 2021 RadhikaGeneralHeat LoadMariner cooldown model status + next stepsAttachment 1 is a geometric diagram that
reflects the current state of the ITM cooldown
model, introduced in [30].
 Heat_Load_Sketch_geometry.pdfHeat_Load_Sketch_diagram.pdfheating_cooling_P_vs_T.pdfCooldownTM_radiative.pdf 
  37   Tue Oct 5 17:46:14 2021 RadhikaGeneralHeat LoadMariner cooldown model status + next stepsBuilding on [32],
I added a copper cold finger to conductively
cool the inner shield, instead of holding
 Heat_Load_Sketch_all.pdfVaryingISA.pdfCooldownTM.pdf 
  42   Fri Oct 15 13:45:55 2021 RadhikaGeneralHeat LoadMariner cooldown model status + next stepsI used the same model in [37]
to consider how test mass length affects
the cooldown. Attachment 1 plots the curves
 VaryingTMl.pdf 
  43   Fri Oct 15 14:31:15 2021 RadhikaGeneralHeat LoadMariner cooldown model status + next stepsI reran the cooldown model, setting the
emissivity of the inner surface of the inner
shield to 0.7 (coating), and the emissivity
 VaryingISA.pdfVaryingTMl.pdf 
  38   Mon Oct 11 15:22:18 2021 YehonathanGeneralGeneralMicrocomb alternativesFollowing our discussion at the Friday
JC meeting, I gathered several resources
and made a small simulation to show how frequency
 ELMO_specs.pngHNLF_specs.pngSimulationResults1.pngSimulationResults3.png 
  39   Tue Oct 12 12:44:44 2021 Jiri SmetanaGeneralGeneralNew Damping Loop ModelI've ironed out the issues with my
MATLAB model so that it now shows correct
phase behaviour. The problem seems to arise
  
  78   Tue Aug 23 17:10:50 2022 PacoGeneralDesign specsNew corner plotsInstead of varying individual layer thicknesses
using the MC sampler, I made sure both the
thickness and index of refractions are varied
 ITM_corner.pdfETM_corner.pdf 
  70   Tue Jul 26 14:17:44 2022 JuanGeneralGeneralOSEMS actuators we have 23 OSEMS they look all full built
and I will try and test them this week and
or next week.
 8x 
  2   Thu May 21 12:10:03 2020 StephenGeneralResourcesOngoing Mariner ResourcesOngoing points of updates/content (list
to be maintained and added)
Mariner
  
  13   Fri May 7 09:57:18 2021 StephenGeneralEquipmentOverall Dimensions for Mariner Suspension Test Chamber ConceptKoji, Stephen

Putting together Koji's design
work with Stephen's CAD, we consider
 mariner_suspension_test_chamber_concept.jpg 
  18   Wed Jul 7 16:32:27 2021 StephenGeneralEquipmentOverall Dimensions for Mariner Suspension Test Chamber ConceptWIP - Stephen to check on new suspension
dimensions and fit into 40m chamber
  
  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 
  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]
  
  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]
  
  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 
  57   Sat Jul 2 09:22:39 2022 Juan GeneralGeneralProgress update I've completed one coil driver board. 
Hopefully next week I can finish the
other 2 boards and make the modifications
 IMG-5220.jpg 
  86   Fri Sep 30 21:51:31 2022 Jennifer HritzGeneralOptical ContactingQuick test heat and pressure testGiven that these glass slides are much
thinner than the ones I worked with prior,
I suspected they would be more receptive
 pressure_set_up_PXL_20221001_040539385.MP.jpgsamples_before_pressure_PXL_20221001_040441662.MP.jpgheat_w_pressure_set_up_PXL_20221001_033228622.MP.jpgsamples_before_heat_w_pressure_PXL_20221001_034620991.MP.jpg 
  77   Tue Aug 16 19:54:29 2022 Jennifer HritzGeneralOptical ContactingRazor blade testWe succeeded in setting up an apparatus
for quantifiying the razor blade test. After
mounting the glass slides such that
 PXL_20220817_023737796.MP.jpgPXL_20220817_023741865.MP.jpg 
  82   Tue Sep 27 22:29:34 2022 Jennifer HritzGeneralOptical ContactingRazor test apparatus disassembly picturesPictures of the razor test apparatus before
and after disassembly, to make future reassembly
easier.
 razor_before_PXL_20220817_211123631.MP.jpgrazor_after_PXL_20220911_062818511.MP.jpg 
  24   Thu Sep 9 11:25:30 2021 PacoGeneralDesign specsRerun HR coatings with n,k dispersion[Paco]

I've re-run the HR coating
designs for both ETM and ITM using interpolated
 etm_updated.pdfitm_updated.pdf 
  25   Thu Sep 9 20:42:34 2021 PacoGeneralDesign specsRerun HR coatings with n,k dispersion[Paco]

Alright, I've done a re-optimization
targetting a wider T band around 2128 nm.
 ETM210909190218.pdfITMLayers210909204021.pdf 
  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 
  72   Thu Aug 4 11:26:55 2022 JuanGeneralGeneralSat AmpSat amp seems to be working just fine.
There does seem to be a saturation issue
with one of the outputs we may need to change
 IMG-6153.jpg 
  74   Mon Aug 8 13:00:56 2022 JuanGeneralGeneralSat Amp testing of OSEMSIn the following test, a single Sat Amp
chassis that holds Sat Amp Board S1106078
and S1106077
 OSEMs.xlsx 
  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 
  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 
  4   Thu Mar 4 17:04:52 2021 PacoGeneralDesign specsSilicon TM dichroic coatings for phase IHave been using the 40m
Coatings repo code by Gautam (with some
modifications to make dichroic designs under
 ETM_coating_candidates.pdfITM_coating_candidates.pdf 
  6   Wed Mar 17 19:51:42 2021 PacoGeneralDesign specsSilicon TM dichroic coatings for phase IUpdate on ETM

New optima are
being found using the same basic code with
some modifications, which I summarize below;
 ETM_R_210317_1927.pdfETM_Layers_210317_1927.pdfETM_nominal_cornerPlt.pdf 
  7   Wed Mar 17 21:24:27 2021 gautamGeneralDesign specsSilicon TM dichroic coatings for phase II guess you have tried it already - but
does enforcing the stacks to be repeating
bilayer pairs of the same thickness fail
  
  9   Wed Mar 24 17:42:50 2021 PacoGeneralDesign specsSilicon TM dichroic coatings for phase IYeah, the magnitudes are the inverse weighted
scalar costs (so they lie on the appropriate
relative scale) and indeed larger enclosed
  
  3   Fri Jun 5 11:13:50 2020 RaymondGeneralHeat LoadSteady state heat load exampleAttached is a cartoon partial view into
the heat load experienced by the Mariner
assembly.
 Heat_Load_Sketch.pdf 
  73   Thu Aug 4 13:44:56 2022 Jennifer HritzGeneralOptical ContactingSuccess with slowly heatingYesterday, I did two rounds of slowly heating
4 samples to the maximum hot plate temperature.
This was to formally test if my success
 PXL_20220803_232203193.jpgPXL_20220804_002433906.jpg 
  34   Fri Oct 1 12:01:24 2021 PacoGeneralDesign specsTM Barrel coating emissivity[Paco, Nina, Aidan]

We ran our stack emissivity calculation
on different AR stacks to try and make a
 stack_1.pdfstack_2.pdfstack_3.pdfinterpolated_n_k.pdf 
  35   Fri Oct 1 13:24:40 2021 AidanGeneralDesign specsTM Barrel coating emissivityI have to question whether this passes
a sanity test. Surely in the case of Stack
2, the 10um thick Ta2O5 will absorb the majority
  
  36   Fri Oct 1 14:11:23 2021 PacoGeneralDesign specsTM Barrel coating emissivityAgree with this.
Quickly running tmm on the same "stacks"
gave the Attachment #1-3. (Ignore the
 stack_1.pdfstack_2.pdfstack_3.pdf 
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