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ID Date Author Type Categoryup Subject Text Attachments
  523   Fri Apr 14 16:36:29 2023 ThejasOpticsCharacterizationDetermining the curvature bottom of the curved mirrorsAttached here with are relevant plots.




 21x 
  524   Mon Apr 17 17:56:25 2023 Thejas OpticsCharacterizationA+ OMC Piezos wedge angle PZT dimension analyzed and characterized.
The blue dot in the images represents the
position of the cathode. The length of the
 19x 
  526   Wed Apr 19 14:28:08 2023 ThejasOpticsCharacterizationA+ OMC Curved mirror radius of curvatureRestimation of the parameters

Camille and I went back to the
lab to re-measure the beam profile follwoing
 ini_beam.pdf 
  528   Wed Apr 26 13:23:00 2023 StephenOpticsCharacterizationPZT DC Response with Shadow Sensor - QPD Calibration[Stephen, Camille, Thejas, with support
from Marie, Dean, Luis]

We setup a shadow sensor! (Attachment
 qpd_dc_response_setup_image_20230425.jpgShadow_Sensor_Stage_Calibration_plot_20230426.png 
  531   Fri Apr 28 14:24:03 2023 Thejas OpticsCharacterizationA+ OMC Matching [Thejas, Camille, Stephen] 

Here are some notes on how
I plan to approach matching of
  
  532   Mon May 1 13:30:40 2023 StephenOpticsCharacterizationPZT DC Response with Shadow Sensor - PD Calibration[Stephen, Camille, Thejas, with support
from Luis]

Calibration reattempted
 pd_pzt_dc_response_setup_image_20230426.jpgShadow_Sensor_Stage_Calibration_plot_PD_20230427.png 
  533   Tue May 2 12:49:43 2023 StephenOpticsCharacterizationPZT DC Response with Shadow Sensor - First measurement attempt[Stephen, Camille, Thejas]

A running log of our efforts from
Monday 1 May. Data continues to be placed
  
  534   Thu May 4 11:39:19 2023 StephenOpticsCharacterizationPZT DC Response with Shadow Sensor - First measurement attemptEfforts from Tuesday through Thursday Wednesday,
02 through 04 May, are described below.

The main outcomes were:
  
  535   Thu May 4 15:12:14 2023 KojiGeneralCharacterizationOMC (004): Final Testing
FSR measurement (dip) -
done May 3, 2023
FSR
measurement (RFAM injection) - done
  
  536   Fri May 5 18:37:31 2023 StephenOpticsCharacterizationPZT DC Response with Shadow Sensor - First measurement attempt[Thejas, Camille, Stephen]

In Downs 227 on 05 May 2023

We took the following actions:
 Shadow_Sensor_Stage_Calibration_plot_PD_smaller_beam_20230505.pngupdated_setup_smaller_beam_spectrum_analyzer_20230505.jpg 
  537   Thu May 11 10:46:17 2023 Thejas GeneralCharacterizationaLIGO OMC[Thejas, Camille, Koji]

We aligned the laser beam to the
cavity and drove the OMC cavity PZTs (0 to
  
  539   Mon May 15 14:20:03 2023 Thejas OpticsCharacterizationA+ OMC ROC Herewith attached are the results
of curved mirror radius of curvature characterization. 

 
 21x 
  540   Mon May 15 14:24:41 2023 Thejas OpticsCharacterizationA+ OMC ROC Koji's mirror measurement result attached
herewith for comparison. 

 Screenshot_2023-05-15_at_14.24.02.png 
  541   Tue May 16 10:26:12 2023 KojiGeneralCharacterizationOMC (004): Final Testing
FSR measurement (dip) -
done May 3, 2023
FSR
measurement (RFAM injection) - done
  
  542   Tue May 16 13:07:11 2023 StephenOpticsCharacterizationPZT DC Response with Shadow Sensor - DC Response Qualitative Results, Batch 112 May 2023, Downs 227

Stephen, Camille, Thejas

We completed a first batch of PZT
  
  544   Tue May 23 16:30:09 2023 Thejas ElectronicsCharacterizationA+ OMC Piezos LA coupling Oplev setup was built: arm length about
2 m 

As the PZT 44 was actuated with
 drive.png 
  549   Sun Jun 25 21:04:35 2023 KojiGeneralCharacterizationOptical assembly/testing of OMC (004) completedOptical assembly/testing of OMC
(004) completed
- OMC (004) with the transport fixture
 PXL_20230624_072237980.jpgPXL_20230624_072254264.jpgPXL_20230624_072304754.jpgPXL_20230624_072320422.jpg 
  550   Sun Jun 25 21:08:37 2023 KojiGeneralCharacterizationOMC (004) transported to Downs for cable furnishingOMC (004) + the transport fixture was transported
to Downs 227 with the boxes for OMC cabling
hardware and DCPD/QPD connector parts.
 PXL_20230624_073552303.jpgPXL_20230624_073531044.jpg 
  552   Fri Jun 30 10:55:45 2023 Camille MakaremElectronicsCharacterizationSummary of PZT reliability test procedure[Camille, Thejas, Stephen]

To test the reliability of the
PZTs, they were driven for 10^7 cycles. (At
  
  553   Thu Jul 6 10:19:23 2023 Thejas GeneralCharacterizationOMC Lab optic table [Camille, Thejas]

The optics table in OMC lab was
cleaned up, cameras and photodiodes used
  
  554   Mon Jul 10 16:09:35 2023 KojiOpticsCharacterizationOMC(004) FSR / FinesseBelated entry: OMC(004) FSR / Finesse
measurement (May 3rd, 2023)

1) FSR measurement with
 FSR_Scan_FitFSR_TF_03-05-2023_160833.pdfFSR_Scan_FitFSRAMINJ3_TF_03-05-2023_173039.pdf 
  555   Mon Jul 10 16:15:06 2023 KojiOpticsCharacterizationOMC(004) FSR / FinesseBelated entry: OMC(004) FSR / Finesse
measurement (Jun 13th, 2023)

RFAM Injection (Attachment
 FSR_Scan_FitFSR1MAMINJ_15-06-2023_180555.pdffinesse_measurements_log.pdf 
  556   Mon Jul 10 20:23:47 2023 KojiOpticsCharacterizationOMC (004) Spot positionsBelated entry: OMC(004) Spot positions
(Jun 15, 2023)

Photographs of the spot positions
 10x 
  557   Mon Jul 10 20:29:05 2023 Koji GeneralCharacterizationOMC(004) PZT characterizationBelated entry: OMC(004) PZT Slow
scan / freq response measurements (May 10/11/17,
2023)
 PZT_Scan.pdfPZT_response.pdfOMC_OL_CLTF.pdf 
  558   Mon Jul 10 20:52:19 2023 KojiOpticsCharacterizationOMC (004) TMS measurementBelated entry: OMC(004) TMS measurement
with the PZT voltages scanned (Jun 12/15,
2023)
 HOM_plot_PZT0_0.pdfOMC_20230612.pdfHOM_PZTV_PZT1_0V.pdf 
  560   Thu Jul 13 00:38:47 2023 StephenOpticsCharacterizationA+ OMC, PZT DC Response and Length to Angle before Curved Mirror Assy Batch 1[2023.07.13]

The attached table includes the
characterization values used to inform the
 before_bonding_batch_1_20230711.pngmanual_outputs_from_20230711.xlsx 
  562   Mon Jul 17 10:15:56 2023 Camille MakaremElectronicsCharacterizationPZT Reliability Test Results (part 1 of 2)[Camille, Thejas, Stephen]

Results for PZT reliability tests:

Batch 1: SN37, SN38, SN39, SN44
 10x 
  564   Wed Jul 19 08:38:07 2023 Camille MakaremElectronicsCharacterizationPZT Reliability Test Results (part 2 of 2)Results for PZT reliability test:
Batch 3: SN31, SN32, SN35, SN40, SN45
 Thermal_31-32-35.PNGThermal_40-45.PNGTemps_31-32-35_40-45.PNGDriveVoltage_31-32-35-40-45.PNGPXL_20230713_183834301.jpg 
  604   Fri Aug 11 10:42:05 2023 Camille MakaremOpticsCharacterizationpower budget measurements[Camille, Thejas]
10 August 2023
 1000006624.jpgPowerMeasurments_10Aug2023.PNG 
  612   Mon Aug 21 16:05:07 2023 Camille MakaremOpticsCharacterizationcavity realignment and new power measurementsThanks for clarifying that. We will repeat
some power measurements and check the output
offset voltage to the laser.
  
  613   Mon Aug 21 16:15:09 2023 KojiOpticsCharacterizationcavity realignment and new power measurementsYou should proceed to the next steps. You'll
need to repeat the power measurements before
the bonding. Next time, the measurement procedure
  
  614   Tue Aug 22 10:25:10 2023 ThejasOpticsCharacterizationcavity realignment and new power measurementsThanks Koji, we did observe this discrepency
and thought that the code normalizes the
power/voltage readings to the reference power
  
  616   Wed Aug 23 07:48:14 2023 Camille Makarem, TejasOpticsCharacterizationFSR and TMS measuarement of A+ build[Camille, Thejas]
22 August 2023
 test_22-08-2023_165728.pdftest_22-08-2023_170543.pdfFSR_CavityLength.PNG 
  617   Thu Aug 24 12:30:58 2023 Camille Makarem, Thejas OpticsCharacterizationFSR and TMS analysisAttached are the analysis results from
the measurements in 616.
FSR: 264.657354 +/- 0.003444 MHz
 TMS.PNGHOM_scan.pdfFSR_Scan_FitFSR_TF_22-08-2023_160812.pdf 
  622   Thu Sep 14 14:26:51 2023 Camille MakaremElectronicsCharacterizationRemaining PZT testsPZTs 31, 32, 35, 40 and 45 have had their
DC responses measured (pre-reliability test)
and have been through the reliability test
  
  4   Wed Jun 20 20:37:45 2012 ZachOpticsConfigurationTopology / parameter selectionEDIT (ZK): All the plots here were generated  8x 
  5   Thu Jun 21 03:07:27 2012 ZachOpticsConfigurationParameter selection / mode definitionEDIT 2 (ZK): As with the   geom_bowtie.pnggeom_non-bowtie.png 
  36   Thu Nov 8 19:47:55 2012 KojiElectronicsConfigurationSolder for PZTsRich saids:
I
  
  38   Thu Nov 8 20:12:10 2012 KojiOpticsConfigurationHow many glass components we need for a plateOptical prisms 50pcs (A14+B12+C6+E18)
Curved Mirrors 25pcs (C13+D12)
  
  55   Fri Jan 18 13:25:17 2013 KojiOpticsConfigurationAutocollimator calibrationAn autocollimator (AC) should show (0,0)
if a retroreflector is placed in front of
the AC.
 autocollimator_calibration.pdf 
  63   Thu Feb 21 18:44:18 2013 KojiOpticsConfigurationPerpendicularity testPerpendicularity test of the mounting
prisms:
The perpendicularity of the prism
 perpendicularity_test.pdfP2203206.JPG 
  64   Wed Feb 27 18:18:48 2013 KojiOpticsConfigurationMore perpendicularity testMounting Prisms:
(criteria: 30arcsec = 145urad =>
0.36mm spot shift)
  
  65   Fri Mar 1 23:06:15 2013 KojiOpticsConfigurationMore perpendicularity test finalPerpendicularity of the "E" mirror
was measured.

Mounting Prisms:
  
  86   Thu Mar 28 03:37:07 2013 ZachOpticsConfigurationTest setup input optics progress[Lisa, Zach]
Last night (Tuesday), I finished
setting up and aligning most of the input
 OMC_test_setup_IO.jpg2013-03-27_05.48.20.jpg2013-03-28_02.29.36.jpg 
  87   Fri Mar 29 08:55:00 2013 ZachOpticsConfigurationBeam launched into fiber

    

       
            
  
  94   Thu Apr 4 00:35:42 2013 ZachOpticsConfigurationMMT installed on breadboard, periscope built[Koji, Zach]
 2013-04-03_23.43.00.jpg 
  97   Thu Apr 4 23:44:52 2013 KojiOpticsConfigurationBeam launched into fiberWe had to move our flipper mirror to share
the beam between Peter's setup and ours as
our flipper is at the place where the ISS
  
  99   Fri Apr 5 18:18:36 2013 ZachOpticsConfigurationAOM probably broken

    

       
            
 Isomet_1250C_zin_4_5_13.png 
  103   Mon Apr 8 20:56:52 2013 KojiOpticsConfigurationPZT & Curverd Mirror arrangementAssembly #1:
Mounting Prism #16
PZT #26
 PZT_assembly.pdf 
  105   Mon Apr 8 23:42:33 2013 KojiOpticsConfigurationFake OMC roughly alignedMode matching:
 
 beam_profile.pdfmode_matching.pdf 
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