ligo-ex ligo-ds
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ID Date Author Type Categorydown Subject Text Attachments
  414   Mon Jul 29 12:20:56 2024 LiuUpdateInterferometer SimulationsUpdate on wavefront actuation with astigmatically driven RH for CEUpdate on wavefront actuation with astigmatically
driven RH for CE is attached. 
 SURF_nonastig_merged.pdf 
  415   Mon Jul 29 12:23:10 2024 LiuUpdateInterferometer SimulationsUpdate on mechanical resonances of CE BS with stiffener ringUpdate on mechanical resonances of CE BS with
stiffener ring is attached. 
 eigen_freqs_merged.pdf 
  Draft   Sun Aug 4 09:01:01 2024 MichaelUpdateInterferometer SimulationsUpdate on SRC Mode Mismatch AnalysisAn update on my analysis to minimize mode
mismatch/scattering by introducing toroidal
mirrors to the SRC.
 SRC_Mode_Mismatch_Update_8_2_24.pdfSRC_Mode_Mismatch_Update_8-12-24.pdf 
  421   Tue Aug 6 13:07:07 2024 XuejunUpdateInterferometer Simulations [Xuejun]

 The width and location of
the measured in-air change in temperature
profile has been determined to be 0.045m
 Thermal_model_image.pnggenerated_irradiance_profile.png 
  424   Mon Aug 12 17:09:04 2024 Cynthia UpdateInterferometer SimulationsO4 vs O5 cavity scans with ITM plume guess or ETMSo far the proposed solution for what to use
for O5 ITM mirror for SIS simulations is
either the plume guess file or using the
 O5_plots_and_tables.pdfO4_plots_and_tables.pdfETM12mapO5.pngScreenshot_2024-08-12_at_5.05.31_PM.png 
  426   Mon Aug 19 07:11:55 2024 CynthiaUpdateInterferometer Simulationscavity scans with FROSTI effects    LIGO_update_8_19.pdf 
  428   Mon Aug 26 14:42:04 2024 Cynthia UpdateInterferometer Simulationscurrent status on cavity scan with effects of FROSTII used the code and arm cavity model used
for previous O5 study on mirrors and HOM
(the pdf of the study and the result can
 LIGO_updates_8_26.pdf 
  430   Tue Aug 27 18:37:40 2024 LukeUpdateInterferometer SimulationsRingheater model updateUpdated the model to produce a more circular
deformation in the HR surface. The first
three attachments are from irradiance patterns
 Initial_1W.pngIncreased_rays_100W.pngIncreased_rays_more_100W.pngInitial_100W.png 
  436   Mon Sep 9 12:36:45 2024 MichaelUpdateInterferometer SimulationsUpdate on Analysis of Mode Mismatch Minimization in A#I have taken a closer look at the solution
curve in the mirror parameter space which
I have searched, focusing on the "resilience"
 SRC_Mode_Mismatch_Update_9_9_24.pdf 
  439   Mon Sep 16 07:28:16 2024 LukeUpdateInterferometer SimulationsRing heater update   20240916_Ringheater_updates.pptx 
  443   Mon Sep 16 15:18:59 2024 Cynthia UpdateInterferometer Simulationsa breakdown of FROSTI and thermal effects and the resulting cavity scan    ligo_update_9_16_(1).pdf 
  444   Mon Sep 23 08:29:49 2024 LukeUpdateInterferometer SimulationsRingheater update
Ringheater
Update
If the link does not work here is
 20240923_Update.pptx 
  446   Mon Sep 23 15:00:41 2024 Cynthia UpdateInterferometer Simulationscorrections on assumption for O5 coatingThe document recording ETM07 and ETM08 coating
(T2300093) was discussed: 

the current
plume files are not necessarily correct in
 Uncoated_S1_ETM07-v2.pdf 
  454   Wed Oct 2 13:38:00 2024 CynthiaUpdateInterferometer Simulationscavity scan with averaged O4 ETM coating as plume   O5plumevsCoating.pngO5CoatAvgpt5.pngO5AVgcoatingFROSTIpt5.PNG 
  469   Wed Nov 6 13:48:55 2024 LiuUpdateInterferometer SimulationsQN modeling updateSlides   
  482   Mon Dec 2 00:11:23 2024 MichaelUpdateInterferometer SimulationsStatus Update on Toroidal Mirrors Project WorkAs it has been significant time from my last
update on this project, I compiled a few
notes about what I have been working on,
  
  523   Tue Feb 25 01:37:00 2025 MichaelUpdateInterferometer SimulationsUpdates and Current Next Steps for Toroidal Mirrors ProjectSince the previous discussion of this project,
I've worked on building finesse models to
verify mathematical results which model the
  
  526   Tue Feb 25 10:56:25 2025 CynthiaUpdateInterferometer Simulationsmirror coating added for simulation rerunI have tried to rerun the simulation on finesse
after adding the mirror coating. The result
has a large fluctuation in required input
 updats_(3).pdf 
  530   Tue Mar 4 10:18:43 2025 CynthiaUpdateInterferometer Simulationsattempted to remove curvature and tilt for the coating    3_4_updates.pdf 
  540   Tue Mar 11 11:28:52 2025 CynthiaUpdateInterferometer Simulationsflattening mirror to study power discrepency   updates_3_11_(1).pdf 
  548   Tue Apr 8 00:17:01 2025 MichaelUpdateInterferometer SimulationsSqueezing Performance Graphs for Case With and Without Toroidal Mirrors in LIGOI've created some graphs for the frequency
dependent observed squeezing level in LIGO
for both the nominal case and the case where
  
  554   Tue Apr 15 11:37:17 2025 CynthiaUpdateInterferometer SimulationsFinishing up mirror coating map step   updates_4_15_2025.pdf 
  555   Thu Apr 17 12:12:29 2025 LiuHowToInterferometer SimulationsPreventing Thread Contention in Multiprocessing with Finesse and Cython
    Avoiding Thread
Contention When Using Multiprocessing
  
  556   Mon Apr 21 16:56:42 2025 MichaelUpdateInterferometer SimulationsFixed Observed Squeezing Curve for Toroidal Mirror CaseWe've resolved the issue with the observed
squeezing curve for the toroidal mirror case
showing worse performance at lower frequencies
 updated_observed_squeezing_plot.png 
  558   Tue Apr 22 11:04:31 2025 LiuUpdateInterferometer SimulationsTest Mass Thermal State Decoder Update with Interferometer Operation   Update.pdf 
  564   Tue Apr 29 10:59:25 2025 LiuUpdateInterferometer SimulationsTest Mass Thermal State Decoder with Updated Comparison Cases    Update.pdf 
  571   Tue May 6 13:07:34 2025 MichaelUpdateInterferometer SimulationsInitial Convergence Plots for Toroidal Mirrors Project   Convergence_Plots_5_6_25.pdfConvergence_Plots_5_6_25-1.pdfaperture_num_points_convergence.png 
  582   Mon May 26 23:24:33 2025 MichaelUpdateInterferometer SimulationsInitial Monte Carlo Simulations for Toroidal Mirrors ProjectI've run an initial Monte Carlo simulation
for statistical comparison of toroidal mirrors
for the dual FROSTI TCS case. Below is the
  
  587   Tue Jun 3 12:16:13 2025 Cynthia UpdateInterferometer SimulationsPoint absorber simulation on radially averaged profile    update_6_3.pdf 
  598   Tue Jun 24 13:47:58 2025 LiuUpdateInterferometer SimulationsAlternative FROSTI A# optimization approachAlternative FROSTI A# optimization approach  Update.pdf 
  2   Thu Jun 2 16:14:58 2022 JonHowToGeneralCustom conda environment on JupyterHubCross-linking instructions: How
to run a Jupyter notebook in your custom
Conda environment
  
  7   Mon Jul 11 14:29:45 2022 JonOmnistructureGeneralHEPA filter installedToday I unpacked and installed the new HEPA
filter for the lab. It is an Omni CleanAir
OCA1210 capable of 1200 CFM. This flow rate
 IMG_1530.png 
  16   Mon Jan 23 17:26:15 2023 Peter CarneyUpdateGeneralOven cleaningAiden 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. 
  
  17   Thu Jan 26 18:58:25 2023 AidenUpdateGeneralOven HeatingAiden cleaned the oven with methanol again
and set the oven to 260 degC for 12 hours.
  
  18   Fri Jan 27 18:44:31 2023 Julian UpdateGeneralVacuum Chanmber CleaningI used the IPA wipes to wipe down the inside
of the chamber the best I could. I cleaned
the main chamber but not any of the connecting
  
  19   Fri Feb 3 13:04:04 2023 shaneSummaryGeneralclean room particle counts 1/25/23Clean room count graphs for each zone (as
of January 25, 2023) attached
 cleanroomcountsJan25.pdf 
  22   Mon Feb 6 20:02:32 2023 JulianUpdateGeneralCleanroom UpdateI wiped down the main table (including frame,
legs, and transparent shelf) and workbench
using alcohol wipes. Once I cleaned all of
  
  25   Fri Feb 10 15:15:30 2023 AidenUpdateGeneralBagging First BatchAiden Bagged and Tagged the first batch of
stainless steel parts shown on the google
spread sheet. 
1. Removed two parts from
  
  27   Sat Feb 11 00:17:27 2023 JulianUpdateGeneralVacuum Chamber CleaningToday I finished wiping down the rest of the
vacuum chamber, specifically focusing on
the connecting ports and outside surface
 20230210_181404.jpg20230210_181424.jpg20230210_181541.jpg20230210_181606.jpg 
  28   Sat Feb 11 17:09:29 2023 ShaneUpdateGeneralclean room particle counts 2/10/23Took a round of clean room counts after the
latest clean of vacuum chamber on Feb 10.
Used 60 second sample time, 5 samples for
 occupied2.10.23.pdfunoccupied2.10.23.pdfparticlecounts2.10.23.PDF 
  29   Mon Feb 13 18:57:53 2023 AidenSummaryGeneralClean and Bake batch 2Cleaned second batch of SS parts with liquinox
for 20 min. Then put in oven for 5 steps;
1. Ramp, 100 degC, 15 min 2. Const, 100 degC,
  
  30   Fri Feb 17 19:12:39 2023 AidenUpdateGeneralClean and Bake batch 3Bagged and Tagged batch 2 parts by placing
no more than two parts per ESD bag then taped
them with kapton tape and tagged them with
 IMG_4126.jpgIMG_4125.jpg 
  31   Tue Feb 21 17:51:04 2023 AidenSummaryGeneralClean and Bake batch 4Bagged and Tagged batch 3 parts by placing
no more than two part numbers per bag and
taped them with kapton tape and labeled them
 IMG_4148.jpgIMG_4147.jpg 
  32   Thu Feb 23 13:32:55 2023 ShaneUpdateGeneralClean room floor particle countsHere are the counts from the clean room floor
today. The counts should be dated- the ones
from today (2/23/23) are the last 8 in the
 2.23.2023.pdf 
  33   Thu Feb 23 21:12:33 2023 JulianUpdateGeneralVacuum Chamber CleaningToday I was able to come in and wipe down
both sides of the vacuum chamber lid using
the regular alcohol wipes and also wipes
 ChamberLid_inside.jpgChamberLid_outside.jpgVacuumChamber_inside.jpg 
  34   Mon Feb 27 17:09:04 2023 Pamella UpdateGeneralVacuum Chamber CleaningPamella and Julian finished cleaning the interior
of the chamber, chamber lid, and the table.
We found some black residue on the side of
 Side_of_Table.jpegWipes_from_table.jpeg 
  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
 EE5E0296-D362-4EA6-B482-85A629D93B46.jpeg4C0AA805-667E-45AD-8704-03389BD63489.jpeg51CE3D1E-F48E-4F57-8450-8F58C27154BB.jpeg58ADE656-52AD-4F0E-88BA-B993F977A519.jpeg 
  38   Tue Feb 28 19:37:22 2023 AidenSummaryGeneralClean and Bake batch 5Bagged and Tagged batch 4 parts by placing
no more than two part numbers per bag and
taped them with kapton tape and labeled them
 IMG_4168.jpgIMG_4169.jpgIMG_4170.jpg 
  41   Thu Mar 2 20:53:56 2023 JulianUpdateGeneralCleanroom UpdateToday Pamella and Julian began the final cleaning
of the cleanroom, starting with the HEPA
vacuuming and mopping then wiping down every
  
  42   Fri Mar 3 19:13:33 2023 AidenSummaryGeneralClean and Bake Batch 6Started to clean the dirtiest of the valves.
I could not finish but I definitely made
good progress on it. The MDC valve is very
 IMG_4173.jpgIMG_4174.jpg 
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