ligo-ex ligo-ds
  Richardson Lab Experimental Log, Page 1 of 13  Not logged in ELOG logo
New entries since:Wed Dec 31 16:00:00 1969
ID Date Author Type Category Subject Text Attachments
  640   Tue Sep 2 18:33:38 2025 LiuInfrastructureGeneralNew lab room 1125 layout and measurementAction items for facilities
 

Ceiling lights replacement
Fume
 1125.pdf 
  639   Tue Sep 2 12:41:33 2025 LiuUpdateInterferometer SimulationsMulti-ring FROSTI design for A# with ring heater optimization[Tyler, Liu]

Ring heater optimization,
continued
 Update.pdf 
  638   Tue Sep 2 12:34:02 2025 Xuesi MaUpdate Updata for self heating effect on HOMhttps://docs.google.com/presentation/d/19I1fx5BLEzYb4Qnc9P4rJnYAvWI8NqE2dsj9gSPyYzg/edit?usp=sharing   
  637   Tue Sep 2 11:53:34 2025 TylerUpdateTCSRIN Infrastructure Update (09/02/2025)[Ma, Tyler]


Below are slides discussing
RIN infrastructural updates related to the
CyMAC.
  
  636   Tue Aug 26 13:09:03 2025 TylerUpdateTCSO6 RH Update[Tyler]

 Below are slides giving an
update on RH O6 design progress. 

Slides
  
  635   Tue Aug 26 12:45:41 2025 Christina, Ma, TylerUpdateCDSRIN UpdateSlides   
  634   Tue Aug 26 12:18:36 2025 MichaelUpdateInterferometer SimulationsSqueezing Plots for SRC Parameter SpaceI've run a few plots of observed squeezing
in the LIGO interferometer to fully ensure
that the point we have selected is the optimal
 Screenshot_2025-08-26_at_12-16-01_LIGO_Project_Log_-_Google_Docs.pngScreenshot_2025-08-26_at_12-16-32_LIGO_Project_Log_-_Google_Docs.pngScreenshot_2025-08-26_at_12-17-26_LIGO_Project_Log_-_Google_Docs.png 
  633   Tue Aug 26 12:14:24 2025 LiuUpdateInterferometer SimulationsMulti-ring FROSTI design for A# with ring heater optimization Multi-ring FROSTI design for A# with ring
heater optimization 
 Update_(1).pdf 
  632   Tue Aug 19 12:33:59 2025 PooyanUpdateTCSA# BS Update   A#_beamsplitter_thermal_lensing.pdf 
  631   Tue Aug 19 12:08:40 2025 ChristinaUpdateTCSRP 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.
 11hzCSD.png11hzstrain.png 
  630   Tue Aug 12 13:49:24 2025 MaryUpdate point absorber and coated aperture in A#   Aug12.pdf 
  629   Tue Aug 12 13:46:56 2025 ChristinaUpdate     3.png3-1.png 
  628   Tue Aug 12 13:32:43 2025 LiuUpdateInterferometer Simulations Differences in Fused Silica parameters.  Screenshot_2025-08-12_at_1.31.11_PM.pngScreenshot_2025-08-12_at_1.31.17_PM.png 
  627   Tue Aug 12 13:28:00 2025 TylerUpdateTCSRH Fenicsx v. HV   Profile_comparison.png1W_diff.png50W_diff.png 
  626   Tue Aug 12 12:35:19 2025 TylerUpdate CyMAC ADC Update[Christina, Ma, Tyler]

 Updated CyMAC
measurement, comparing 260 hrs of measurement
time vs. 405 hrs.
 CSD_magnitude.pngchi_sq.png 
  625   Tue Aug 12 12:16:21 2025 LiuUpdateInterferometer SimulationsMulti-ring FROSTI optimization for A#Multi-ring FROSTI optimization for A# with
static polishing
 Update.pdf 
  624   Mon Aug 11 22:19:50 2025 ChristinaUpdateTCSRed Pitaya Data Streaming [Ma, Tyler, Christina] 

 This past week, we were able to
set up the data streaming for continuous
 3.png3-1.png 
  623   Wed Aug 6 16:31:37 2025 Xuesi MaUpdate  
    Date and Time:
Around 4:20 PM on Auguest 6, 2025
    Location and Temperature:
 941.jpg942.jpg943.jpg945.jpg946.jpg 
  622   Tue Aug 5 12:21:04 2025 LiuUpdateInterferometer SimulationsFROSTI A# optimizationA# multi-ring FROSTI optimization  Update.pdf 
  621   Tue Aug 5 11:25:17 2025 MaryUpdate 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
 point_absorber_A#.pdf 
  620   Thu Jul 31 14:26:58 2025 Xuesi MaUpdate  [Tyler, Ma, Christina, Maple, Cece, Mary,
Pooyan, Audrey]
We started by cleaning outside of
 2025-08-07_cleanroom_chart.png 
  619   Tue Jul 29 12:30:00 2025 ChristinaUpdateTCS260 hour ADC update [Ma, Christina, Tyler] 

ADC CyMAC
260 hr, 8192Hz sampling rate channels V3
and Vref6
 CSD_06_28_25_270hr.png 
  617   Tue Jul 29 11:45:19 2025 MapleUpdateTCSMeeting update   Maple_TCS_update_jul_29.pdf 
  616   Tue Jul 29 11:27:57 2025 LiuUpdateInterferometer SimulationsMulti-ring FROSTI optimization for A#   Update.pdfscene-export-temp.htmlscene-export-deformation.html 
  615   Tue Jul 22 12:20:29 2025 ChristinaUpdateTCS  [Ma, Christina, Tyler] 
 Figure
1 shows the following PSDs for channels 0-15
from the 14 hour test. Figure 2 shows the
 PSDch0-15.pngCSD2hz_16hz.png 
  614   Tue Jul 15 13:13:48 2025 ChristinaUpdateTCSPhotodetector optical post assembly   pdreassembly.png 
  613   Tue Jul 15 11:47:53 2025 Xuesi MaInfrastructure  
    Date and Time:
Around 4:50 PM on July 1, 2025
    Location and Temperature:
 20250701_165118.jpg20250701_165200.jpg20250701_165329.jpg20250701_165246.jpg 
  611   Tue Jul 15 10:40:23 2025 ChristinaUpdateTCS  [Christina, Ma, Tyler] 

 Yesterday,
Ma and I started taking data for the PSD/CSD
measurements while the photodetectors and
 rpon.png 
  610   Mon Jul 14 23:50:22 2025 TylerUpdate Cymac ADC update I've been looking into the performances
of individual channels on the Cymac by computing
their individual PSDs and corresponding CSDs
 cymac_ADC_PSDs.pdfch35_ADC_comps.pdf 
  609   Mon Jul 14 20:45:20 2025 Luke SummaryCleanroomHEPA filter performance metrics [Luke, Luis]

We’ve been looking into methods
for evaluating the performance of the HEPA
  
  608   Thu Jul 10 16:41:18 2025 ChristinaUpdateTCS  [Christina, Ma, Tyler] 

 Pomona
Box completed and is now on the server rack
in 1119. Additionally, the photodetectors
 2994921113032912040.JPG4717009101108174053.JPG5782646701589802125.JPG 
  607   Tue Jul 8 12:15:04 2025 TylerUpdateTCSCyMAC ADC Noise Update[Tyler, Christina, Ma, Mary]

Below is
attached the ADC noise floor of two CyMAC
channels vs the Red Pitaya.
 ADC_comps.pdf 
  606   Tue Jul 8 11:46:55 2025 Maple MatznerUpdateTCSUpdate on SURF progress for Jul 8   Maple_TCS_update_jul_8.pdf 
  605   Mon Jul 7 17:44:04 2025 TylerUpdateGeneralLab Organization[Tyler, Pooyan, Ma, Cece, Luke, Luis, Christina,
Maple]

After acquiring some new equipment
for the labs, a few of us spent time on Thursday
 IMG_1874.jpgIMG_1872.jpgIMG_1871.jpg 
  604   Mon Jul 7 16:39:18 2025 ChristinaUpdateTCSPomona Box Drawings Below are the drawings for the pomona
box modifications 
 pbdwg1.PDFpbdwg2.pdf 
  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  



   
    
 12x 
  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 
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