ligo-ex ligo-ds
  Richardson Lab Experimental Log, Page 1 of 14  Not logged in ELOG logo
ID Date Author Type Category Subject Text Attachments
  Draft   Thu Mar 12 13:18:49 2026 Cece OchoaUpdateInterferometer SimulationsCE Cavity Design UpdateAnimation showing how modes shift in the CE
arm cavity for radius 27581m and mirror radius
of40cm as the laser powers up the 1.5 MW.
  
  692   Thu Mar 12 12:48:58 2026 CynthiaUpdateInterferometer SimulationsNew Result of point absorber+miscentering   Untitled_presentation_(1).pdf 
  691   Wed Mar 11 19:38:21 2026 PooyanInfrastructureCleanroomParts and things to get after the cleanroom move
concrete Caulk to fill the drill
holes in 1119

Example [Pooyan:
I have a caulk gun and silicon caulk at home,
 8x 
  690   Thu Mar 5 13:01:14 2026 TylerUpdateTCSA# FROSTI Profiles Optimization
Slides
discussing updates on FROSTI A# profile optimizations.
In particular, a new RMS function is defined
  
  689   Thu Mar 5 12:08:47 2026 PooyanInfrastructureCleanroomCleanroom HEPA fan defect[Pooyan, Ma, Mary, Tyler]

While re-installing the clean-room
HEPA fan filters, we realized that one of
 Screenshot_2026-03-05_at_10-52-30_WhisperFlow-Product-Data-and-Submittals-1788-50-Rev19.pdf.pngIMG_5591.jpeg2704.jpg2705.jpg2706.jpg 
  688   Thu Feb 26 20:25:10 2026 Cynthia LiangUpdateInterferometer SimulationsPoint Absorber+Miscentering Simulation   update_2_18_Merged.pdf 
  687   Thu Feb 19 12:59:47 2026 TylerUpdateTCSA# FROSTI Profiles 01/15/26
Slides
covering a new approach to optimizing for
A# FROSTI profiles. In particular, we start
  
  686   Thu Feb 19 12:34:18 2026 CynthiaUpdateInterferometer SimulationsPoint absorber simulation   update_2_18.pdf 
  685   Thu Feb 12 13:50:38 2026 Xuesi MaUpdateVACVacuum status warning systemVacuum Pressure Warning Script

Script
Location: controls@chimay
Script Path: /vac/python/serial/temp_vacuum_warning.py
  
  684   Thu Feb 12 12:59:29 2026 MaryUpdate     SB_scattering.pdf 
  683   Thu Feb 12 12:53:51 2026 Cece OchoaUpdateELOGCE Cavity Design UpdateUpdate on HOM placement w/ cavity locking.
Still verifying mode placement

RoC: 28340m
and 26874m
 2_12_short_update.pdf 
  682   Thu Feb 12 12:25:38 2026 Xuesi MaInfrastructureGeneralLab floor plans [Cece, Ma, Mary, Pooyan, Tyler, Paul]

 We have continued the reorganization
 8x 
  681   Thu Feb 5 13:59:42 2026 MaryUpdateInterferometer Simulations    112.pdf 
  680   Thu Feb 5 13:49:31 2026 MichaelUpdateInterferometer SimulationsUpdating Squeezing Mode Matching LogicAfter some tests, I have determined that the
squeezer in the aLIGO katscript is currently
being matched to the SRC. This logic will
 screenshot2.pngscreenshot1.png 
  679   Thu Feb 5 13:34:13 2026 Cynthia UpdateInterferometer SimulationsPoint absorber + miscentering simulation    update2_5_(3).pdf 
  678   Thu Feb 5 13:12:28 2026 TylerUpdateTCSA# FROSTI Profiles 01/15/26 Slides
updating progress on FROSTI A# irradiance
profiles and reflector design. Edge roll-off
  
  676   Thu Feb 5 11:42:47 2026 JonInfrastructureGeneralLab floor plans [Audrey, Cece, Jon, Ma, Mary, Michael,
Pooyan, Tyler, Shane] 
 We have completed the preliminary
 image.jpgimage_1.jpgimage_3.jpg 
  675   Thu Jan 29 12:46:22 2026 Cece OchoaUpdate CE Cavity Design Update (4)Update for CE Cavity Arms + Modes 


https://docs.google.com/presentation/d/1-dXYylkAbNpHR4WVCx9Q8ryL_xGlH-JSSLXEUQg6b7Q/edit?usp=sharing
 
  
  674   Wed Jan 28 11:29:30 2026 TylerUpdateTCSA# FROSTI Profiles 01/15/26



  
  673   Thu Jan 22 14:06:00 2026 Xuesi MaUpdateTCSFROSTI A# Reflector Update Slides   
  672   Thu Jan 22 13:18:12 2026 PooyanInfrastructureGeneralLab floor plansThe working document of tasks regarding
moving the clean room is attached. Needs
LIGO account to access and edit. 
  
  671   Thu Jan 22 13:12:29 2026 MaryUpdate     PA_matem2.pdfPA_maxtem6.pdfmaxtem600.jpgmaxtem2dis.jpgdismaxtem6.jpg 
  670   Thu Jan 22 10:10:31 2026 JonInfrastructureGeneralLab floor plansAttached are the starting and final floor
plans for the February 2026 expansion into
the Physics 1125 lab.
 Pre-Feb-2026.pngPost-Feb-2026.png 
  669   Thu Jan 15 13:52:55 2026 Xuesi MaUpdateTCSFROSTI A# Reflector UpdateSlides   
  668   Thu Jan 15 12:52:58 2026 TylerUpdateTCSA# FROSTI Profiles 01/15/26Slides   
  667   Thu Jan 8 12:51:03 2026 TylerUpdateTCSFROSTI A# Update 01/08/2026Slides   
  666   Thu Dec 18 12:51:13 2025 TylerUpdateTCSFROSTI A# Profiles UpdateSlides   
  665   Thu Dec 4 12:10:19 2025 TylerUpdateTCSFROSTI A# Profiles and Element Width OptimizationSlides   
  664   Thu Nov 20 13:54:34 2025 TylerUpdateTCSFROSTI A# Optimization and Mesh Convergence AnalysisAttached below are slides discussing FROSTI
A# Irradiance optimization and mesh convergence
analysis for penetration depth.
 Updates_11_19_2025-3.pdf 
  663   Thu Nov 20 13:03:58 2025 Cece OchoaUpdateELOGCE Cavity Design UpdateUpdate on grouping 0+8th Order Modes  11_20_update.pdf 
  662   Thu Nov 20 12:40:47 2025 Xuesi MaInfrastructureGeneralRoom 1125 Optical TableCleaned off the tapes on the optical table
with acetone. 
 1651.jpg1650.jpg 
  660   Thu Nov 13 12:39:01 2025 MaryUpdateInterferometer Simulations    PA.pdf 
  659   Thu Nov 6 12:39:43 2025 Cece OchoaUpdateELOGCE Cavity Design UpdateUpdated mode placements and ROC. No thermal
effects added yet.
 base_0_6_plot.pdfbase_0_7_plot.pdf 
  658   Thu Oct 30 11:45:44 2025 LiuUpdateInterferometer SimulationsMulti-ring FROSTI optimization for A#Multi-ring FROSTI optimization for A#: dimensionality
reduction with PCA vs. t-SNE
 Update.pdf 
  Draft   Thu Oct 23 11:34:05 2025 MichaelUpdateInterferometer SimulationsUpdated Exploration into Different SRC Mirror Configurations for Improved Squeezing   Update_Slides_10_23_25.pdfUpdate_Slides_10_30_25.pdf 
  656   Thu Oct 23 11:09:16 2025 Xuesi MaUpdateMeasuring Noise in InterferometerScatter Noise ModelDetChar meeting presentation   
  655   Thu Oct 23 10:07:51 2025 LiuUpdateInterferometer SimulationsMulti-ring FROSTI optimization for A#4D parameter space visualization and dimensionality
reduction for better optimization
 loss_embedding.htmlUpdate.pdf 
  654   Thu Oct 16 10:31:20 2025 LiuUpdateInterferometer SimulationsMulti-ring FROSTI optimization for A#Two-ring FROSTI grid search with 4D parameter
space search and visualization
 interactive_plot_dropdown.htmlUpdate.pdf 
  653   Fri Oct 10 14:40:23 2025 Xuesi MaUpdateVACPressure gauge Swap[Tyler, Ma]

We suspect a pressure gauge problem.
The electronic unit of the main chamber pressure
 6x 
  652   Thu Oct 9 12:18:14 2025 LiuUpdateInterferometer SimulationsMulti-ring FROSTI optimization for A#   Update.pdf 
  651   Wed Oct 8 14:45:12 2025 Xuesi MaInfrastructureVACRGA Chamber PressureRGA Chamber pressure is currently at 3.68e-4
torr.
 20251008_130141.jpg 
  650   Tue Sep 30 12:51:23 2025 TylerUpdateTCSO6 RH Update 09/30/2025Slides   
  649   Tue Sep 30 12:26:15 2025 LiuUpdateInterferometer SimulationsFROSTI optimization for A#   Update.pdf 
  648   Tue Sep 23 13:10:07 2025 TylerUpdateTCSRH O6 Update 09/23/25Slides   
  647   Tue Sep 23 12:39:29 2025 LiuUpdateInterferometer SimulationsMulti-ring FROSTI optimization for A#   Update.pdf 
  646   Tue Sep 16 12:47:29 2025 Xuesi MaUpdateInterferometer SimulationsFrosti actuation impact analysisSlides   
  645   Tue Sep 16 12:18:09 2025 LiuUpdateInterferometer SimulationsGrid search optimization for single-ring FROSTIGrid search optimization for single-ring FROSTI  Update.pdf 
  644   Tue Sep 9 13:08:44 2025 Xuesi MaUpdate  Slides   
  643   Tue Sep 9 12:13:38 2025 LiuUpdateInterferometer SimulationsMulti-ring FROSTI optimization for A# with grid searchMulti-ring FROSTI optimization based on IFO
metrics for A# with grid search
 Update.pdf 
  642   Tue Sep 9 12:06:38 2025 TylerUpdateTCSRH O6 UpdateSlides   
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