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ID Date Author Type Category Subjectdown Text Attachments
  343   Tue Apr 16 23:11:43 2019 KojiGeneralGeneralBorrowed items from the other labsApr 16, 2019
Borrowed
two laser goggles from the 40m. (Returned
  
  385   Tue Oct 22 15:54:59 2019 KojiElectronicsLoan / LendingBorrowed LB1005 from Cryo CavFrom Cryo Cav setup

Borrowed LB1005 Servo box ->
OMC
  
  419   Thu Jul 21 14:35:35 2022 KojiGeneralGeneralBond reinforcement blocks for the invar bracketsBond reinforcement blocks for the
invar brackets:


Attachment 1:
 IMG_1095.JPGIMG_1091.JPG 
  283   Sat Jul 1 15:29:57 2017 KojiOpticsGeneralBlack glass cleaning / Final bonding for the emergency repair for OMC #002[Alena, Koji] 

Report of the work on June
30.
 DSC_0347.jpgDSC_0348.jpgDSC_0350.jpgDSC_0352.jpgDSC_0354.jpg 
  76   Sat Mar 23 02:41:00 2013 KojiOpticsGeneralBlack glass beam dumps for the first OMCReceived black glass beam dumps from
MIT
- gluing by EP30-2 looks pretty fine.
 P3223314.JPGP3223319.jpgP3223320.jpg 
  386   Fri Dec 6 00:55:25 2019 KojiOpticsGeneralBeamdump gluing[Stephen, Koji]

20 glass beamdumps were
bonded at the 40m cleanroom.
 6x 
  87   Fri Mar 29 08:55:00 2013 ZachOpticsConfigurationBeam launched into fiber

    

       
            
  
  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
  
  194   Wed Jul 2 18:58:42 2014 KojiGeneralGeneralBeam dump delaminationWhile the OMC breadboard was being inspected,
it was found that two out of five black-glass
beam dumps showed sign of delamination.
 beamdump_delamination.png 
  195   Thu Jul 3 17:45:18 2014 KojiGeneralGeneralBeam dump delaminationHere is the resolution.
I'll apply fillets of EP30-2 along
the edges of the black glass (See figure).
 beamdump_delamination_solution.png 
  257   Sat Mar 26 18:22:24 2016 KojiElectronicsCharacterizationBaking / Contamination tests of the PDsFor the production of the aLIGO PDs, the
following transfer of the PDs were carried
out
  
  259   Tue Apr 5 18:22:40 2016 KojiElectronicsCharacterizationBaking / Contamination tests of the PDsPossible
reduction of the QE was observed after air-bake
at 75degC.
 QE_after_air_bake.pdf 
  54   Wed Jan 16 14:10:50 2013 KojiOpticsCharacterizationAutocollimator tests of optics perpendicularity/parallelismThe
items:
- Autocollimator (AC) borrowed from
  
  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 
  187   Thu Jun 19 23:16:50 2014 KojiOpticsGeneralAll of the prisms have been glued- All of the PRISM mirrors have been glued
- 4 out of 5 beam dumps have been
glued
 P6196525.JPG 
  188   Fri Jun 20 18:59:12 2014 KojiOpticsGeneralAll of the invar blocks have been gluedAll of the INVAR blocks have been glued.
I found thinner shims in the stock.
On Monday, the template will be removed.
  
  189   Mon Jun 23 21:54:16 2014 KojiOpticsGeneralAll of the gluing completedThe bottom-side templates were removed.
The last beam dump was removed
TODO
  
  359   Thu May 9 17:35:07 2019 KojiOpticsGeneralAlignment strategyNotes
on the OMC cavity alignment strategy

- x3=1.17 γ + 1.40 δ, x4=1.40
 T1500060_OMC_Optical_Testing_Procedure.pdf 
  109   Fri Apr 12 09:25:31 2013 KojiOpticsCharacterizationAlignment of the OMC (without glue)[Zach Koji]
The first attempt not to touch the
curved mirrors did not work. (Not surprising)
  
  348   Fri Apr 19 09:35:28 2019 JoeGeneral Adjusting cavity axis, re-alignment of OMC and locking[koji,philip,
joe, liyuan,
steven]
 FSR_Scan_Fitfsrdata.pdfIMG_7679_cropped.jpg 
  90   Mon Apr 1 10:28:03 2013 KojiMechanicsGeneralAdditional UV blast for the top surface[Koji, Lisa, Jeff, Zach]

Jeffs concern after talking with the
 P3283483.JPGP3283459.jpgP3283473.JPG 
  99   Fri Apr 5 18:18:36 2013 ZachOpticsConfigurationAOM probably broken

    

       
            
 Isomet_1250C_zin_4_5_13.png 
  425   Mon Jul 25 18:25:04 2022 KojiGeneralGeneralA/C Filter was replaced
New filter PN
Grainger
TK70457312T Mini-Pleat Air Filter,
  
  215   Mon Aug 4 18:59:50 2014 KojiGeneralGeneralA memorandomOn breadboarfd cabling for 3IFO OMC
D1300371 - S1301806
D1300372 - S1301808
  
  289   Mon Nov 27 20:24:24 2017 KojiGeneralGeneralA former LHO PD (Trans) removed from the OMC #002 for the shipment to StockholmAttachment 1: The PD was
removed from the transmission side of the
OMC #002 (former LHO OMC - the one blasted
 6x 
  369   Mon Jul 1 12:38:49 2019 KojiOpticsCharacterizationA and M prisms perpendicularity measurement[Stephen, Koji]

The perpendicularity of
some of the A and M prisms were tested.
 6x 
  303   Thu Jul 26 20:57:07 2018 KojiElectronicsCharacterization9MHz port tuned impedance[Rich Koji]

The 9MHz port was tuned and the
impedance was measured.
 impedance_eom.pdfeom9.pdfeom_models_9MHz.pdf 
  400   Mon Nov 9 22:06:18 2020 KojiMechanicsGeneral5th OMC Transport FixtureI helped to complete the 5th OMC Transport
Fixture. It was built at the 40m clean room
and brought to the OMC lab. The fixture hardware
 IMG_0211.jpgIMG_0221.jpg 
  428   Wed Jul 27 10:09:51 2022 KojiGeneralGeneral4+4 wire clamp in handRegarding: D1200971

- 4 CLASS A wire clamp obtained
 PXL_20220727_072154009.jpg 
  219   Sat Jan 17 11:40:04 2015 KojiGeneralGeneral3rd OMC completedJan 15, 2015 3rd OMC completed

The face caps of the DCPD/QPD cables
were installed (Helicoils inserted)
  
  297   Wed May 30 17:44:23 2018 KojiOpticsCharacterization3IFO EOM surface check3IFO EOM dark microscope images courtesy
by GariLynn and Rich

Attachment1/2: Hole #1
 IMG_5756.JPGIMG_5757.JPGIMG_5758.JPGIMG_5759.JPGLooking_at_Hole2.png 
  298   Mon Jul 2 11:30:22 2018 KojiElectronicsCharacterization3IFO EOM impedance measurement[Rich Koji]

3IFO EOM (before any modification)
was tested to measure the impedance of each
 impedance_eom.pdfEOM_Z_DATA.zip 
  294   Sat May 5 22:51:04 2018 KojiOpticsGeneral3IFO EOM Optical testThe 3IFO EOM test performed at
the 40m. Result: 40m
ELOG 13819
  
  250   Thu Feb 18 21:08:32 2016 KojiGeneralLoan / Lending(all returned) Antonio loanAntonio borrowed: Rich's PD cutter
(returned), Ohir power meter(returned),
Thorlabs power meter head, Chopper
  
  433   Thu Jul 28 00:46:47 2022 KojiGeneralGeneral Subject: OMC #002 Cable bracket replacement (3)Checking the spare parts 

- Conclusion for OMC#2:
need PEEK cable
 IMG_1137.JPGIMG_1148.JPGIMG_1138.JPG 
  432   Thu Jul 28 00:28:15 2022 KojiGeneralGeneral OMC #002 Cable bracket replacement (2) Connector
unmounting

- (Attachment 1)
 IMG_1132.JPGIMG_1133.JPGIMG_1136.JPG 
  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 
  318   Sat Feb 2 20:35:02 2019 KojiOpticsCharacterization Summary: OMC(002) HOM structure recalculation (after mirror replacement) OMC (002) after repair
History:Mirror replacement
after the damage at H1. Measurement date
 OMC_HOM_190110.pdfHOM_PZTV.pdfHOM_plot_PZT0_0.pdfCav_scan_response_PZT.pdf 
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