ligo-ex ligo-ds
  Richardson Lab Experimental Log, Page 10 of 13  Not logged in ELOG logo
ID Date Author Type Category Subjectdown Text Attachments
  144   Tue Jul 4 15:35:38 2023 PamellaUpdateFLIRFLIR - reflexion problem[Pamella]

I was testing all the positions
we need to cover when moving the FLIR camera
or the reflector. I tried to find out more
 AcquisitionImage(Jul-03-2023_14_29).jpgAcquisitionImage(Jul-03-2023_14_31).jpgAcquisitionImage(Jul-03-2023_14_49).jpgCaderno_sem_título_(26)-2.jpgparabol1.print.png 
  127   Mon Jun 19 11:20:57 2023 PamellaUpdateFLIRFLIR - Fixed some problems[Pamella]

    08:59 am: Turned
on the electronic device (current on) for
started taking data.
    09:37
 AcquisitionImage(Jun-19-2023_11_00).jpg 
  125   Fri Jun 16 16:17:13 2023 PamellaUpdateFLIRFLIR - Change the position[Pamella]

    Today I change the distance
between the FLIR camera and reflector (3D-Mask
with mirrors and light). Now the distance
 IMG-7637.jpg 
  53   Wed Mar 22 12:16:20 2023 JonInfrastructureCleanroomExperimenting with HEPA fan speedsJon, Cao
In effort to try to reduce the noise
level inside the cleanroom, we have dialed
  
  395   Fri Jul 5 14:23:13 2024 LiuUpdateInterferometer SimulationsEngineering drawings for straight edge heater element designs for FROSTIStep files and engineering drawings for the
straight edge heater element designs have
been created in COMSOL and SolidWorks. They
  
  493   Thu Dec 19 12:00:44 2024 LukeUpdateVACEnd of bakeThe
vacuum chamber has stopped baking. 
Current state as of 11:40, 12/19/2024:
  
  289   Sat Dec 9 12:34:12 2023 JonUpdateGeneralElectronics workshop migrated to 1129[Jon, Tyler, Shane, Luis]
On Wednesday we completed the migration
of the electronics workshop from 1119 to
 IMG_0765.jpgIMG_0767.jpeg 
  217   Tue Aug 29 22:07:38 2023 AidenUpdateGeneralElectronic BenchDr Richardson is working on mounting more
power supplies in the server rack and is
using the electronics bench. Be aware to
 IMG_4632.jpg 
  447   Mon Sep 23 15:11:21 2024 TylerUpdateScripts/ProgramsEffective Emissivity Analysis and RIN Update A quick update on the effective emissivity
analysis for the CIT FROSTI testing: 

 
I was able to (roughly) match
 OPD_Plot.pngTemp_emiss_plot.pngrin_photodectors.pngRIN_setup.jpg 
  404   Mon Jul 15 09:36:44 2024 LiuUpdateInterferometer SimulationsETM Profile Optimization for FROSTI This is to optimize the FROSTI heating
profile for ETM, by minimizing the residual
RMSE of the HR surface deformation after
 pdf_merged.pdf 
  332   Tue Feb 20 18:08:24 2024 AidenUpdateGeneralDegassing the RGAI took an RGA measurement before and after
degassing the RGA. Both data was taken with
the Argon open. The pressure before taking
 bake11_240220_Elements_postdegas_ArO.pngbake11_240220_Elements_predegas_ArO.png 
  151   Sat Jul 8 14:26:17 2023 PamellaUpdateFLIRData with the new configuration without the mask and reflector.[Pamella]
 I started collecting data by moving
the camera FLIR and covering all six positions
on the screen (2x3). I was looking and taking
 6x 
  167   Wed Jul 19 19:10:31 2023 PamellaUpdateFLIRData plot FLIR and updates.[Pamella]

Today I was able to plot
a graph for the isolation point on the center
of the heater. I got data from six different
 8x 
  169   Thu Jul 20 21:00:23 2023 PamellaUpdateFLIRData plot FLIR and updates about the black body[Pamella]

Today I got more data
to plot the Gaussian. So I took more snaps
in each position for the six different spots
 AcquisitionImage(Jul-20-2023_13_09).jpgAcquisitionImage(Jul-20-2023_13_15).jpgAcquisitionImage(Jul-20-2023_13_33).jpgAcquisitionData-480(Jul-20-2023_SIsolated_Plot.pngGauss.plot-2.jpeg 
  139   Fri Jun 30 15:57:28 2023 PamellaUpdateFLIRData and python code update
 [Pamella] 
 Updates: Problems
with the emission intensity and python code.

 Yesterday I was working on get
 isolation1-2.jpgAcquisitionImage(Jun-29-2023_18_27)_(1).jpgAcquisitionImage(Jun-29-2023_18_38).jpgAcquisitionImage(Jun-29-2023_18_39).jpg 
  276   Wed Nov 22 15:46:50 2023 ShaneUpdateCDSDB25 signal connections for FROSTI heaters


[Shane,
Jon]

Installed new DC smart switch in electronics
 DB25input_signals.pdfIMG_3137.jpegdc_smart_switch_signal_connections.jpeg 
  277   Thu Nov 23 12:34:44 2023 JonUpdateCDSDB25 signal connections for FROSTI heatersUpdate: I was able to put the
FROSTI power controller on the lab network.
It is connected to the switch in the top
  
  290   Mon Dec 11 12:58:57 2023 Shane, LuisUpdateCDSDAC-ADC loopback test debugging[Luis, Shane]

Working on debugging last
week's weird results for the ADC-DAC loopback
test for channels 14 and 15. With DAC output
  
  434   Tue Sep 3 18:24:17 2024 TylerUpdateCDSCymac Timing Chassis Issue[Tyler, Jon]


The timing chassis used
for the cymac has been shut off due to an
unknown issue causing its supplied current
  
  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 
  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 
  265   Mon Nov 13 11:23:54 2023 Jon UpdateCDSCyMAC testing[Jon, Shane, Luis]
My repair of the internal ribbon
connecting the ADC to the adapter board resolved
 Cymac_GDS_Diagnostics.png 
  254   Thu Nov 2 17:14:36 2023 Shane, Jon UpdateCDSCyMAC set up permanentized



CyMAC connections
have been finalized and made permanent. Also
tested voltages, which are all looking good.
 cymac_chassis_back.jpegcymac_chassis_back2.jpegcymac_chassis_front.jpegfinal_connections_back_of_power_supply.jpegpower_supply_back.jpeg 
  250   Mon Oct 30 18:15:13 2023 ShaneUpdateCDSCyMAC chassis mounted and progress on power connectionsAll CyMAC chassis mounted in electronics rack
today, and shelf for monitor also mounted.
Images attached. Assembled grounding cables
 electronics_rack_back.jpegelectronics_rack_front.jpegmounted_chassis.jpegpower_supply.jpeg 
  Draft   Tue Oct 1 19:41:23 2024 ShaneUpdateCDSCyMAC Timing Chassis Issue[Shane, Luis]


Summary of the issue we've
been having with the timing chassis: when
we connect only the Valon 5015 to power,
 IMG_5917.jpegIMG_5803.jpegIMG_5804.jpeg 
  252   Wed Nov 1 18:24:01 2023 ShaneUpdateCDSCyMAC Power connections made



Finished
power connections today for the CyMAC chassis.
Images attached. Had to switch the shrink
 cymac_power_connected.jpegcymac_power_connections_back.jpeg 
  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 
  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 
  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 
  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
  
  374   Mon Jun 3 14:59:44 2024 CynthiaUpdateInterferometer SimulationsCreated cavity scan with LG modes    ligo_update_6_3.pdf 
  141   Mon Jul 3 14:32:24 2023 CaoInfrastructureVACCooling down vacuum chamber[Cao]

 
After leaving the the chamber
to bake at 120 deg C from Thursday 3:41 pm.
Today I started to cool the chamber down
  
  8   Fri Jul 22 13:20:28 2022 PhoebeUpdate ComsolI will be using comsol until 1:30 pm today.
I will be updating the model for the heater
mount to be thicker in certain areas, so
  
  382   Mon Jun 24 21:38:25 2024 PooyanInfrastructureComputersComputer server changes in 1119 and 1129[Jon, Pooyan, Tyler]
 
A few computer machine changes have
 IMG_6889.jpgIMG_6890.jpg 
  132   Fri Jun 23 15:47:06 2023 PamellaUpdateFLIRCollecting data - Moving horizontal and vertical on screen.[Pamella]

 
 02:09 pm: Turned
on the device (current on) 
 02:42
pm: Started taking snap on position one (Reference
 6x 
  241   Fri Oct 20 16:38:02 2023 Shane, AidenUpdateCleanroomCleanrooom cleaning and particle count


[Aiden, Shane]


cleaning
cleanroom and particle count


 3:16 pm: started particle
  
  45   Mon Mar 6 18:48:43 2023 PamellaUpdateGeneralCleanroom update Today Pamella and Julian finished cleaning
of the new lab cabinets. Also we wiped the
computer and  put inside the cleanroom so
 203863E0-106A-465E-8D9C-461B0358FB60.jpeg779F360D-CAD0-4C49-AE0B-973F97F6D099.jpeg276B9F0C-6661-441F-AD34-D79DA61E1FC3.jpeg 
  93   Mon May 8 12:00:03 2023 Pamella, Shane, JulianUpdateGeneralCleanroom particle counts and cleaning the cleanroom.[Pamella,Julian, Shane]


Today we
cleaned the clean-room (floor, surfaces)
and particle count.



10:00
  
  268   Thu Nov 16 17:12:42 2023 Luis, Shane, MohakUpdateCleanroomCleanroom cleaning and particle count


[Shane, Luis,
Mohak]


cleaning cleanroom and
particle count
  
  362   Wed Apr 17 15:07:04 2024 ShaneUpdateCleanroomCleanroom cleaning and particle count


[Mohak, Luke,
Luis, Shane, Cynthia, Michael, Xuesi]


cleaning
cleanroom and particle count
  
  369   Thu May 16 15:23:14 2024 ShaneUpdateCleanroomCleanroom cleaning and particle count


[Luis, Michael,
Luke, Shane]


cleaning cleanroom
and particle count
  
  456   Thu Oct 3 19:35:04 2024 ShaneUpdateCleanroomCleanroom cleaning and particle count


[Luke, Michael,
Cynthia, Mary]


cleaning cleanroom
and particle count
  
  472   Thu Nov 14 10:46:20 2024 Luke SummaryCleanroomCleanroom cleaning 
[Luke, Luis, Michael]
cleaning cleanroom and particle count
 partical_count_final.png 
  497   Wed Jan 8 17:35:57 2025 Luke SummaryCleanroomCleanroom cleaning[Luke, Tyler, Cynthia, Shane, Michael]
Summary of Cleaning Activities:
We began cleaning Room 1119 at 2:00
 partical_count_250108.png 
  507   Sat Feb 1 17:25:52 2025 Luke SummaryGeneralCleanroom cleaning[Luke, Cece, Luis]
Particle Count Measurements:

Pre-cleaning (12:15
 20250131_particalcount.png 
  520   Sun Feb 23 12:11:43 2025 Luke SummaryCleanroomCleanroom cleaning[Luke, Mary, Luis]
Particle Count Measurements:

Pre-cleaning (8:40
 partical_count_2-21-25.png 
  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 
  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 
  15   Wed Jan 18 22:06:05 2023 JulianUpdateELOGCleanroom UpdateI wiped down all the inner walls of the cleanroom
using alcohol wipes, as per Cao's instruction.
  
  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
  
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