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Thu Nov 20 13:54:34 2025, Tyler, Update, TCS, FROSTI A# Optimization and Mesh Convergence Analysis  Attached below are slides discussing FROSTI A# Irradiance optimization and mesh convergence analysis for penetration depth.   Thu Nov 20 13:03:58 2025, Cece Ochoa, Update, ELOG, CE Cavity Design Update  Update on grouping 0+8th Order Modes   Thu Nov 20 12:40:47 2025, Xuesi Ma, Infrastructure, General, Room 1125 Optical Table  Cleaned off the tapes on the optical table with acetone.    Thu Nov 13 12:39:01 2025, Mary, Update, Interferometer Simulations,       Thu Nov 6 12:39:43 2025, Cece Ochoa, Update, ELOG, CE Cavity Design Update  Updated mode placements and ROC. No thermal effects added yet.   Thu Oct 30 11:45:44 2025, Liu, Update, Interferometer Simulations, Multi-ring FROSTI optimization for A#  Multi-ring FROSTI optimization for A#: dimensionality reduction with PCA vs. t-SNE   Thu Oct 23 11:34:05 2025, Michael, Update, Interferometer Simulations, Updated Exploration into Different SRC Mirror Configurations for Improved Squeezing      Thu Oct 23 11:09:16 2025, Xuesi Ma, Update, Measuring Noise in Interferometer, Scatter Noise Model  DetChar meeting presentation   Thu Oct 23 10:07:51 2025, Liu, Update, Interferometer Simulations, Multi-ring FROSTI optimization for A#  4D parameter space visualization and dimensionality reduction for better optimization   Thu Oct 16 10:31:20 2025, Liu, Update, Interferometer Simulations, Multi-ring FROSTI optimization for A#  Two-ring FROSTI grid search with 4D parameter space search and visualization   Fri Oct 10 14:40:23 2025, Xuesi Ma, Update, VAC, Pressure gauge Swap 6x [Tyler, Ma] We suspect a pressure gauge problem. The electronic unit of the main chamber pressure gauge and the electronic unit of the RGA chamber pressure gauge are swapped.   Thu Oct 9 12:18:14 2025, Liu, Update, Interferometer Simulations, Multi-ring FROSTI optimization for A#      Wed Oct 8 14:45:12 2025, Xuesi Ma, Infrastructure, VAC, RGA Chamber Pressure  RGA Chamber pressure is currently at 3.68e-4 torr.   Tue Sep 30 12:51:23 2025, Tyler, Update, TCS, O6 RH Update 09/30/2025  Slides   Tue Sep 30 12:26:15 2025, Liu, Update, Interferometer Simulations, FROSTI optimization for A#      Tue Sep 23 13:10:07 2025, Tyler, Update, TCS, RH O6 Update 09/23/25  Slides   Tue Sep 23 12:39:29 2025, Liu, Update, Interferometer Simulations, Multi-ring FROSTI optimization for A#      Tue Sep 16 12:47:29 2025, Xuesi Ma, Update, Interferometer Simulations, Frosti actuation impact analysis  Slides   Tue Sep 16 12:18:09 2025, Liu, Update, Interferometer Simulations, Grid search optimization for single-ring FROSTI  Grid search optimization for single-ring FROSTI   Tue Sep 9 13:08:44 2025, Xuesi Ma, Update, ,   Slides   Tue Sep 9 12:13:38 2025, Liu, Update, Interferometer Simulations, Multi-ring FROSTI optimization for A# with grid search  Multi-ring FROSTI optimization based on IFO metrics for A# with grid search   Tue Sep 9 12:06:38 2025, Tyler, Update, TCS, RH O6 Update  Slides   Tue Sep 9 12:01:38 2025, Tyler, Ma, Update, ,   Slides   Tue Sep 2 18:33:38 2025, Liu, Infrastructure, General, New lab room 1125 layout and measurement  Action items for facilities   Ceiling lights replacement Fume hood cleaned and refurbished Sink countertop cleaning Floor cleaned and waxed     Tue Sep 2 12:41:33 2025, Liu, Update, Interferometer Simulations, Multi-ring FROSTI design for A# with ring heater optimization  [Tyler, Liu] Ring heater optimization, continued   Tue Sep 2 12:34:02 2025, Xuesi Ma, Update, , Updata for self heating effect on HOM  https://docs.google.com/presentation/d/19I1fx5BLEzYb4Qnc9P4rJnYAvWI8NqE2dsj9gSPyYzg/edit?usp=sharing   Tue Sep 2 11:53:34 2025, Tyler, Update, TCS, RIN Infrastructure Update (09/02/2025)  [Ma, Tyler] Below are slides discussing RIN infrastructural updates related to the CyMAC. Slides   Tue Aug 26 13:09:03 2025, Tyler, Update, TCS, O6 RH Update  [Tyler]  Below are slides giving an update on RH O6 design progress.  Slides   Tue Aug 26 12:45:41 2025, Christina, Ma, Tyler, Update, CDS, RIN Update  Slides   Tue Aug 26 12:18:36 2025, Michael, Update, Interferometer Simulations, Squeezing Plots for SRC Parameter Space  I've run a few plots of observed squeezing in the LIGO interferometer to fully ensure that the point we have selected is the optimal point for squeezing. Contrary to what I expected, there seems to be much more degenerate "optimal" configurations. While the toroidal case may be near optimal, it seems that the solution we found for a non astigmatic beam is not the only one. I will further explore this space to find more optimal/tolerant positions, which I   Tue Aug 26 12:14:24 2025, Liu, Update, Interferometer Simulations, Multi-ring FROSTI design for A# with ring heater optimization   Multi-ring FROSTI design for A# with ring heater optimization    Tue Aug 19 12:33:59 2025, Pooyan, Update, TCS, A# BS Update      Tue Aug 19 12:08:40 2025, Christina, Update, TCS, RP Initial vs CyMAC Plot Comparisons  [Tyler, Ma, Christina] These are the frequency averaged and veto binned plots for the initial Red Pitaya and CyMAC systems.   Tue Aug 12 13:49:24 2025, Mary, Update, , point absorber and coated aperture in A#      Tue Aug 12 13:46:56 2025, Christina, Update, ,       Tue Aug 12 13:32:43 2025, Liu, Update, Interferometer Simulations,   Differences in Fused Silica parameters.   Tue Aug 12 13:28:00 2025, Tyler, Update, TCS, RH Fenicsx v. HV      Tue Aug 12 12:35:19 2025, Tyler, Update, , CyMAC ADC Update  [Christina, Ma, Tyler]  Updated CyMAC measurement, comparing 260 hrs of measurement time vs. 405 hrs.   Tue Aug 12 12:16:21 2025, Liu, Update, Interferometer Simulations, Multi-ring FROSTI optimization for A#  Multi-ring FROSTI optimization for A# with static polishing   Mon Aug 11 22:19:50 2025, Christina, Update, TCS, Red Pitaya Data Streaming   [Ma, Tyler, Christina]   This past week, we were able to set up the data streaming for continuous acquisition to the PCs, and can conduct the initial tests now. We were able to do this by:  Installing the correct OS ecosystems to each Red Pitaya   Installing the terminal streaming client    Wed Aug 6 16:31:37 2025, Xuesi Ma, Update, ,       Date and Time: Around 4:20 PM on Auguest 6, 2025     Location and Temperature:              Back of the room 1119, around the working station: 90.2 °F         Front of the room 1119, around the doorway:   Tue Aug 5 12:21:04 2025, Liu, Update, Interferometer Simulations, FROSTI A# optimization  A# multi-ring FROSTI optimization   Tue Aug 5 11:25:17 2025, Mary, Update, , point absorber and coated aperture in A#  Simulating how point absorber defects on Advanced LIGO mirrors affect cavity performance by modeling a 4km LIGO-like arm cavity with a point absorber fixed at 5cm off-center on the ITM. In this simulation, displaced the laser beam across a 21×21 grid while calculating the deformation, then measuring the resulting power loss in the cavity (~283W circulating power).   Thu Jul 31 14:26:58 2025, Xuesi Ma, Update, ,   [Tyler, Ma, Christina, Maple, Cece, Mary, Pooyan, Audrey] We started by cleaning outside of the cleanroom wiping down the cable channel and working our way down while taking the pre-cleaning measurement. We then stated wiping down the inside of clean room and vacuumed, mopped the outside of the cleanroom. Finally, we vacuumed, mopped, and wiped down the   Tue Jul 29 12:30:00 2025, Christina, Update, TCS, 260 hour ADC update   [Ma, Christina, Tyler]  ADC CyMAC 260 hr, 8192Hz sampling rate channels V3 and Vref6   Tue Jul 29 11:45:19 2025, Maple, Update, TCS, Meeting update      Tue Jul 29 11:27:57 2025, Liu, Update, Interferometer Simulations, Multi-ring FROSTI optimization for A#      Tue Jul 22 12:20:29 2025, Christina, Update, TCS,    [Ma, Christina, Tyler]   Figure 1 shows the following PSDs for channels 0-15 from the 14 hour test. Figure 2 shows the reduced chi squared and CSD plots for both the 2 Hz and 16 Hz resolutions.   Tue Jul 15 13:13:48 2025, Christina, Update, TCS, Photodetector optical post assembly      Tue Jul 15 11:47:53 2025, Xuesi Ma, Infrastructure, ,       Date and Time: Around 4:50 PM on July 1, 2025     Location and Temperature:              Back of the room 1119, around the working station: 85.7 °F         Front of the room 1119, around the doorway:

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