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ID Date Authordown Type Category Subject Text Attachments
  372   Fri Aug 23 11:11:44 2019 shrutiOpticsCharacterizationFinding the curvature bottomI attempted to fit the data taken
by Koji of the beam spot precession at the
CCD in order to find the location of the
 CircleFit.pdfSineFit.pdf 
  373   Thu Aug 29 11:51:49 2019 shrutiOpticsCharacterizationWedging of the debonded PZTs - CalculationUsing the measurements of PZTs 12,13 taken
by Stephen, I estimated the wedging angle
and orientation following Section 2.3.1 of
 PZT_Wedging_Results.pdfPZT_Wedging_Calc.pdf 
  374   Thu Sep 5 15:40:42 2019 shrutiOpticsConfigurationPZT Sub-AssemblyAim: To find the combinations
of mounting prism+PZT+curved mirror to build
two PZT sub-assemblies that best minimises
 Diagrams_SubAssembly.pdfC10_C13_Combinations.pdfPlots_Config_Tolerance.pdf 
  286   Sat Jul 29 18:44:38 2017 ranaElectronicsCharacterizationPDH ampattachment 6: DCPD preamp looks like the
opamp is wired for positive feedback?
  
  393   Mon Sep 28 16:03:13 2020 ranaGeneralGeneralOMC Beam Dump Production Cure Bake
are there any measurements of the BRDF
of these things? I'm curious how much
light is backscattered into the incoming
  
  27   Tue Oct 16 14:50:54 2012 jamie, jeffGeneralGeneralOMC breadboard/plate measurement dimensionsWe have measured the dimensions and mass
of the OMC glass plates/breadboards:

  
  405   Tue Nov 24 10:45:07 2020 gautamElectronicsCharacterizationThe dark noise of the Q3000 QPDsI see that these measurements are done
out to 100 kHz - I guess there is no reason
to suspect anything at 55 MHz which is where
  
  293   Thu May 3 21:45:58 2018 awadeGeneralLoan / LendingBorrowed toaster ovenI’ve borrowed the black and decker
toaster oven to dry some sonicated parts.
It is temporarly located in the QIL lab. 
 9CE80545-7A58-4236-B7E3-1EE6C4042DAA.jpeg 
  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 
  6   Fri Jun 29 11:26:04 2012 ZachOpticsCharacterizationRoC measurement setupHere is the proposed RoC measurement
setup. Koji tells me that this is referred
to as "Anderson's method".
 RoC_measurement_setup.pngRoC_measurement_setup.graffle.zip 
  9   Sun Jul 22 15:56:53 2012 ZachOpticsCharacterizationRoC measurement setupHere is a more detailed version of
the setup, so that we can gather the parts
we will need.
 detailed_RoC_setup.pngdetailed_RoC_setup.graffle.zip 
  67   Tue Mar 5 19:37:00 2013 ZachOpticsCharacterizationeLIGO OMC visibility vs. power measurement detailsEDIT (ZK): Koji points out that (1 -
Ti) should really be the non-resonant reflectivity
of the aligned cavity, which is much closer
 eOMC_visibility_3_4_13.png 
  68   Wed Mar 6 23:24:58 2013 ZachOpticsCharacterizationeLIGO OMC visibility vs. power measurement detailsI found that, in fact, I had lowered
the modulation depth since when I measured
it to be 0.45 rads --> Psb = 0.1.
 TEK00005.PNGTEK00007.PNGeOMC_visibility_3_4_13.pngeOMC_AMTF_vs_power_3_6_13.png 
  74   Wed Mar 20 09:38:02 2013 ZachOpticsCharacterization[LLO] OMC test bench modified For various reasons, I had to switch
NPROs (from the LightWave 126 to the Innolight
Prometheus).
 new_setup_traced.jpg 
  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 
  99   Fri Apr 5 18:18:36 2013 ZachOpticsConfigurationAOM probably broken

    

       
            
 Isomet_1250C_zin_4_5_13.png 
  107   Wed Apr 10 00:40:30 2013 ZachOpticsConfigurationfauxMC locked[Koji, Zach]
 fauxMC_labeled.jpg 
  137   Wed Jun 5 01:06:35 2013 ZachGeneralCharacterizationL1 OMC as-built diagram D1300507
 
 L1OMC_asbuilt.pdf 
  143   Thu Jun 13 12:12:20 2013 ZachGeneralGeneral[LLO] OMC and OMCS in LVEAhttps://alog.ligo-la.caltech.edu/aLOG/index.php?callRep=7395
  
  290   Thu Nov 30 12:18:41 2017 StephenGeneralGeneralPreparation for Modal Testing on 4 DecemberNorna Robertson, Stephen Appert || 
29 Nov 2017, 2 pm to 4 pm  || 
227 Downs, CIT
  
  327   Thu Apr 11 10:54:38 2019 StephenGeneralGeneralOMC(004): preparation for the PZT subassembly bonding


Quote:


  
  344   Wed Apr 17 09:08:47 2019 StephenGeneralGeneralOMC(004): Unwrapping and preparing breadboard[Stephen, Philip, Koji, Joe]

Breadboard D1200105 SN06 was selected
as described in eLOG
 IMG_7635_packaging_of_sn06.JPGIMG_7637_engraving_of_sn06.JPGIMG_7641_particulate_before_top_gun_large_face.JPGIMG_7644_particulate_before_top_gun_small_face.JPGIMG_7646_particulate_after_top_gun.JPG 
  358   Thu May 9 16:07:18 2019 StephenMechanicsGeneralImprovements to OMC Bonding Fixture[Stephen, Koji]

As mentioned in eLOG
331, either increased thermal cycling
 image_of_issue_with_OMC_PZT_bonding_fixture_from_D16003336-v3.pngimage_02_of_issue_with_OMC_PZT_bonding_fixture_from_D16003336-v3.PNG 
  367   Tue May 28 12:14:20 2019 StephenOpticsGeneralCM PZT Assembly Debonding of EP30-2 in Acetone[LiyuanZ, StephenA]

Downs B119

Summary:
 8x 
  371   Thu Aug 22 12:35:53 2019 StephenOpticsCharacterizationWedging of the debonded PZTs 2019 AugustWedge and thickness measurements of PZTs
12 and 13 took place after debonding and
cleaning - results are shown in the first
 IMG_4775.JPGIMG_4770.JPG 
  375   Wed Sep 18 22:30:11 2019 StephenSupplyGeneralEP30-2 Location and StatusHere is a summary of the events of the
last week, as they relate to EP30-2.

1) I lost the EP30-2 syringes that
 IMG_5217.JPG 
  376   Wed Sep 18 23:16:06 2019 StephenSupplyGeneralItems staged at 40m Bake Lab for PZT Subassembly BondingThe following items are presently staged
at the 40m Bake Lab (see photo indicating
current location) (noting items broght by
 IMG_5216.JPGIMG_5215.JPG 
  377   Wed Sep 18 23:38:52 2019 StephenGeneralGeneralDirty ABO ready for PZT Subassembly BondingThe 40m Bake Lab's
Dirty ABO's OMEGA PID controller was
borrowed for another oven in the Bake Lab,
 index.png 
  379   Tue Sep 24 12:19:20 2019 StephenGeneralGeneral Dirty ABO test run prior to PZT Subassembly Bonding The 40m Bake Lab's
Dirty ABO's OMEGA PID controller was
borrowed for another oven in the Bake Lab
 image_showing_20190923_abo_qualifying_bake.png 
  380   Thu Sep 26 17:33:52 2019 StephenGeneralGeneralDirty ABO test run prior to PZT Subassembly Bonding - ABO is Ready!Follow up on OMC
elog 379

I was able to obtain the following
 image_showing_20190924_abo_qualifying_bake.png 
  382   Tue Oct 22 10:25:01 2019 StephenGeneralGeneralOMC PZT Assy #9 and #10 Production Cure Bake OMC PZT Assy Production Cure Bake (ref.
OMC
elog 381) for PZT Assy #9 and #10 started
 OMC_ABO_PZT_Curing_Bake_effort_201906_thru_201909.xlsproduction_cure_bake_pzt_assys_9_and_10_20190927.png 
  383   Tue Oct 22 11:52:53 2019 StephenGeneralGeneralEpoxy Curing Timeline of OMC PZT Assy #9 and #10This post captures the curing timeline
followed by OMC PZT Assys #9 and #10.

Source file posted in case any
 omc_elog_383_Epoxy_Curing_Timeline_of_OMC_PZT_Assy_20191022.pngomc_elog_383_Epoxy_Curing_Timeline_of_OMC_PZT_Assy.pptx 
  384   Tue Oct 22 11:56:09 2019 StephenSupplyGeneralEpoxy Status update as of 22 October 2019The following is the current status of
the epoxies used in assembly of the OMC (excerpt
from C1900052)
 image_ep30-2_epoxy_kit_pcs_item_1582_location_downs_3303.JPG 
  387   Fri Dec 13 14:59:18 2019 StephenGeneralGeneralOMC Beam Dump Production Cure Bake[Koji, Jordan, Stephen]

The beam dumps, bonded on Fri 06
Dec 2019, were placed in the newly tuned
 IMG_6080.JPGIMG_6079.JPG 
  407   Fri Feb 5 07:40:37 2021 StephenSupplyGeneralOMC Unit 4 Build Machined PartsOMC Unit 4 Build Machined Parts are currently
located in Stephen's office. See image
of large blue box from office, below.
 IMG_8117.JPG 
  411   Wed Jul 7 14:21:50 2021 StephenSupplyGeneralOMC Unit 4 Build Machined PartsMore explicit insights into the inventory
for the Unit 4 build. Image of inventory
included below.
 IMG_9238.JPGIMG_9236.JPG 
  300   Mon Jul 2 15:27:31 2018 Rich AbbottElectronicsGeneralWork on EOM (3rd IFO unit)Koji, Rich

We took apart the unit removed
from the 3rd IFO (Unit serial number aLIGO
 EOM3_aLIGO_3rdIfo.JPG 
  301   Tue Jul 3 12:07:47 2018 Rich AbbottElectronicsCharacterizationNotes on 3rd IFO EOMAttached please see my notes summarizing
the models for the electrodes and inductors
within the 3rd IFO EOM
 EOM_Analysis2.pdf 
  305   Wed Aug 8 17:32:56 2018 Rich AbbottGeneralCharacterizationModulation Index Test Setup at 40m LabAttached is a block diagram of the test
setup used in the 40m lab to measure the
modulation index of the IO modulator
 40mLabModIndexSetup.pdf 
  336   Mon Apr 15 21:11:49 2019 PhilipOpticsCharacterizationOMC(004): PZT testing for spare OMC[Koji, Philip]

Today we tested the functionality
of the four remaining PZTs (11,12,13 and
  
  345   Wed Apr 17 10:30:37 2019 PhilipOpticsGeneralOMC optical set-up day 1[Joe, Koji, Liyuan, Philip, Stephen]
Work done on 16.04.2019
  
  347   Fri Apr 19 09:21:07 2019 PhilipOptics Cleaning of OMC opticsach[Joe, Phillip, Koji,
Stephen]

Work from 17.04.2019
 IMG_7877.JPGIMG_7883.JPGIMG_7884.JPG 
  1   Fri Jun 15 15:45:49 2012 KojiGeneralGeneralOMC PlanLIGO Document G1200683-v1:

aLIGO OMC fabrication and testing
  
  2   Sat Jun 16 08:53:09 2012 KojiGeneralGeneralTo Do ListFacility

    Work
    
  
  3   Wed Jun 20 00:10:53 2012 KojiFacilityGeneralHole on the wall was patched   P6191706.jpg 
  7   Sat Jul 14 02:16:07 2012 KojiGeneralGeneralPlan Update: JulyFacility/Supplies

    Work in progress
 P7071878.jpg 
  8   Wed Jul 18 23:20:13 2012 KojiOpticsCharacterizationMode scan results of ELIGONic Smith sent me a bunch of elog lists
where the results of the mode scan can be
found.
  
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