ligo-ex ligo-ds
  Richardson Lab Experimental Log, Page 1 of 12  Not logged in ELOG logo
New entries since:Wed Dec 31 16:00:00 1969
IDdown Date Author Type Category Subject Text Attachments
  603   Tue Jul 1 13:41:36 2025 Xuesi MaUpdate  [Ma, Liu]
 Slides
  
  602   Tue Jul 1 12:39:42 2025 TylerUpdateTCSA# FROSTI Profile Optimization Update[Tyler, Liu]

 Slides
  
  601   Tue Jul 1 11:04:00 2025 ChristinaUpdateTCSFROSTI Reconstruction II [Ma, Tyler, Christina] 

 Finished
external reconstruction of the FROSTI by
installing all the pins to the 2 DB 25 connectors.
 IMG_4042.png 
  600   Fri Jun 27 15:38:22 2025 ChristinaUpdateTCSFROSTI Reconstruction [Tyler, Ma, Christina, Luke] 

 We threaded the wiring of the
heater elements through the reflective surfaces
 IMG_4009.png 
  599   Wed Jun 25 15:44:47 2025 Luke UpdateCleanroomCleanroom cleaning[Luke, Luis, Tyler, Ma, Christina, Maple]
We started by cleaning outside of
the cleanroom wiping down the cable channel
 parttical_count_6-25-25.png 
  598   Tue Jun 24 13:47:58 2025 LiuUpdateInterferometer SimulationsAlternative FROSTI A# optimization approachAlternative FROSTI A# optimization approach  Update.pdf 
  597   Tue Jun 24 12:45:16 2025 TylerUpdateGeneralUpdated ADC spectra[Tyler]

Updated ADC noise spectra measurements
using diaggui. 

 NOTE: Will update plots
 csd_spec.pngchi_sq.png 
  596   Tue Jun 24 11:50:15 2025 Xuesi MaUpdate  



   
    
 resistance_vs_time_all_channels_channel_switch.jpgresistance_vs_time_all_channels_channel_switch_one_cycle_before.jpgresistance_vs_time_all_channels_channel_switch_one_cycle_after.jpgresistance_vs_voltage.jpg 
  595   Tue Jun 17 12:46:47 2025 TylerUpdateElectronicsCyMAC ADC NoiseBelow are results from power spectra measurements
of the CyMAC ADC, computed form 30 hours
of time series data, compared to the performance
 cymac_v_rp_csds.pdfchi_sq_cymac_v_rp.pdf 
  594   Tue Jun 17 12:22:43 2025 Xuesi MaUpdate  



   
    
 11x 
  593   Wed Jun 11 16:33:45 2025 PooyanUpdateComputersLuke's ray tracing hosting
Hosted Lukes model on Chimay. It's
available at https://richardsonlab.ucr.edu/real-time-frosti
The
sourcecode is at Github.
  
  592   Wed Jun 11 16:19:37 2025 PooyanUpdateCDSCDS update
Fast channels recorded to .gwf frame
files

Had to add a DAQ Channels
block to the c1msc model for those channel
 Screenshot_20250611_154834.pngf3k.pdf 
  591   Tue Jun 10 12:13:00 2025 Xuesi MaUpdate  
  By measuring the resistance of the
ladder, I obtained a graph of resistance
as a function of voltage.
 resistance_vs_voltage.pdfresistance_vs_voltage_element_5.pdfresistance_vs_time_all_channels_all_time_RV.pdf 
  590   Tue Jun 10 12:11:14 2025 PooyanUpdateCDSCDS update
The MEDM models issue was fixed.
The issue was that building the c1msc model
alone was not enough and we had to re-build
  
  589   Tue Jun 3 13:16:53 2025 Xuesi MaInfrastructure  
    Date and Time:
Around 3:50 PM on June 2, 2025
    Location and Temperature:
 928.jpg929.jpg931.jpg930.jpg932.jpg 
  588   Tue Jun 3 13:08:47 2025 Xuesi MaUpdate  We currently have the parts for a DB9 connector
but need parts for a DB25 connector, where
did we get the parts for the DB9 connector?
 934.jpg933.jpg 
  587   Tue Jun 3 12:16:13 2025 Cynthia UpdateInterferometer SimulationsPoint absorber simulation on radially averaged profile    update_6_3.pdf 
  586   Tue Jun 3 11:54:06 2025 Cece OchoaUpdate CE Cavity Design UpdateUpdate on the design for the CE Cavity Mirrors  CE_Arm_Cavity_.pdf 
  585   Tue Jun 3 11:50:08 2025 PooyanUpdateCDSCDS updateThere are three major issues with the lab's
CDS system that should be addressed. They
are ordered from the highest priority to
  
  584   Mon Jun 2 09:45:06 2025 Luke UpdateScripts/ProgramsRingheater modeling UpdateSlides
I have added some slides to my meeting
updates. The updates include: my choice in
  
  583   Tue May 27 12:52:22 2025 Xuesi MaUpdate  Using the configuration in section 2.11.1
in the Sorensen installation and operation
manual (attached below), I'm able to remote
 6x 
  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
  
  581   Mon May 26 11:15:28 2025 LukeUpdateScripts/ProgramsUpdate to optimization plotsI have created some new optimization plots.
I have also started on a model like the previous
Desmos model, but in python. 
Slides
  
  580   Wed May 21 14:40:38 2025 Xuesi MaInfrastructureCleanroomCleanroom Temperature
    Date and Time:
Around 2:20 PM on May 21, 2025
    Location and Temperature:
 20250521_142051.jpg20250521_142220.jpg 
  579   Mon May 19 10:59:14 2025 Xuesi MaInfrastructure  

  Status Update


 Previous Status:
  
  578   Thu May 15 12:03:41 2025 Xuesi MaInfrastructureElectronicsNoticeAll Sorensen power supplies are turned
off. The Cymac system is down (All Chassis
are down)
  
  577   Tue May 13 12:41:06 2025 TylerUpdateTCSA# Profiles UpdateSlides on the A# ITM FROSTI profile modeling
efforts can be found here.
  
  576   Tue May 13 12:35:01 2025 Xuesi MaUpdate     resistance_vs_voltage_all.pdfresistance_vs_voltage_overlay.pdfresistance_vs_time_all_channels_all_time_RV.pdf 
  575   Sun May 11 19:36:42 2025 Luke UpdateScripts/ProgramsNew optimization plotsSlides
I have re-run the optimization plots
with the changes mentioned last week. 
  
  574   Fri May 9 20:06:27 2025 Luke SummaryCleanroomCleanroom cleaning[Luke, Mohak, Luis]
We were also able to remove the residue
that has built up on the soft walls by donning
 20250509_particalcount.png 
  573   Thu May 8 17:41:56 2025 LuisUpdateVACRGA Scan Post Bake [Ma, Luis]
    After taking the RGA scans of
the new system, here are the results of the
 2025-4-29_HeaterElement-Bake1_ArO_overlay.png2025-4-29_HeaterElement-Bake1_ArO_overlayNormalized.png 
  572   Tue May 6 13:19:31 2025 Xuesi MaUpdate     resistance_vs_time_RV_rise_time_24.pdfresistance_vs_time_all_channels_all_time_RV.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 
  570   Tue May 6 12:25:03 2025 TylerConfigurationCDSCymac ADC CSD measurementAn initial measurement of the cymbal ADC CSD
is attached below. As of now, it seems that
the sensitivity limit is roughly the same
 cymac_adc_rin_v1.pdf 
  569   Sun May 4 18:17:45 2025 Luke UpdateScripts/ProgramsRingheater modeling UpdateSlides

I have changed some properties
of the thermal model and am re-running the
  
  568   Fri May 2 12:34:02 2025 Xuesi MaUpdateVACStopped bakeThe
vacuum chamber has stopped baking. 
Current state as of 12:30, 5/2/2025:
  
  567   Wed Apr 30 17:33:14 2025 Xuesi MaUpdateVACStarted bake[Luke, Ma, Tyler]
The
vacuum chamber is currently baking. 
  
  566   Wed Apr 30 15:43:56 2025 LuisUpdateVACVacuum Update[Ma, Luke, Luis]

April 29, 2025

3:30 PM
 2025-4-29_HeaterElement-Bake1_ArO.png2025-2-24_HeaterElement_ArO.png 
  565   Wed Apr 30 13:42:45 2025 ShaneUpdateCDSUPS comms successfulUpdate on UPS1 serial interfacing: communication
is now successful. On 4/15/25 we connected
to UPS1 via ethernet rather than USB, and
  
  564   Tue Apr 29 10:59:25 2025 LiuUpdateInterferometer SimulationsTest Mass Thermal State Decoder with Updated Comparison Cases    Update.pdf 
  563   Mon Apr 28 22:08:28 2025 LuisUpdateVACVacuum Leak Test result[Ma, Luke, Luis]

April 24, 2025

3:00 PM
  
  562   Fri Apr 25 19:18:10 2025 Luke UpdateScripts/ProgramsNew optimization plotsI have created two more plots. One on the
transmitted power for a specific configuration.
This was done by taking the product of the
 effective_power.pngproximity.png 
  561   Fri Apr 25 09:09:03 2025 Luke UpdateScripts/ProgramsUpdate to optimization plotsI have calculated the curvature of the surface
plots and created a heat map out of the data.
I have also created a contour plot of them
 HOM_scattering_100kg_modified.pngcurvature_100kg.pnginitial_contour_plot_with_hom_and_curvature.pngtemp_quality_(log10_ratio).png 
  560   Tue Apr 22 13:00:04 2025 NathanUpdateVLC UpdatePhotodiode signal check and additional signal check due to 20Mhz signal and amplifierIn general, photodiode was able to achieve
signal. Below are the voltage signals and
frequency measurements of the photodiode
 thumbnail_(8)_(1).jpgvpp.jpg 
  559   Tue Apr 22 12:08:46 2025 Xuesi MaUpdate  Test 7: Reconnect ribbon cables


 Setup: Reconnect all
the ribbon cables, and turned on the AI Chassis
 20250415_161755.jpg20250416_174640.jpg20250422_105614.jpg 
  558   Tue Apr 22 11:04:31 2025 LiuUpdateInterferometer SimulationsTest Mass Thermal State Decoder Update with Interferometer Operation   Update.pdf 
  557   Tue Apr 22 08:00:39 2025 Luke UpdateScripts/ProgramsThermal optimization modeling 40kgI have redone the width and location optimization
with a 40kg test mass. This was to see where
the nominal ring heater would fall in this
 40kg_into_HOM.png 
  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 
  555   Thu Apr 17 12:12:29 2025 LiuHowToInterferometer SimulationsPreventing Thread Contention in Multiprocessing with Finesse and Cython
    Avoiding Thread
Contention When Using Multiprocessing
  
  554   Tue Apr 15 11:37:17 2025 CynthiaUpdateInterferometer SimulationsFinishing up mirror coating map step   updates_4_15_2025.pdf 
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