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ID Date Authorup Type Category Subject Text Attachments
  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 
  56   Sat Jan 19 20:47:41 2013 KojiOpticsCharacterizationWedge measurement with the autocollimatorThe wedge angle of the prism "A1"
was measured with the autocollimator (AC).
The range of the AC is 40 arcmin.		  autocollimator_wedge_measurement.pdf 
  57   Tue Jan 22 11:10:25 2013 KojiFacilityGeneralEyeware storage and hooks for the face shields are installedA carpenter has come to install the eyeware
storage and hooks for the face shields.		  P1223116.JPG 
  58   Tue Jan 22 17:56:32 2013 KojiMechanicsGeneralRotary stage selectionNewport UTR80

    Sensitivity: 4 arcsec
  
  59   Mon Feb 4 00:39:08 2013 KojiOpticsCharacterizationWedge measurement with the autocollimator and the rotation stageMethod:

    Mount the tombstone prism
on the prism mount. The mount is fixed on		  autocollimator_wedge_measurement.pdf 
  60   Wed Feb 6 02:34:10 2013 KojiOpticsCharacterizationWedge measurement with the autocollimator and the rotation stageMeasurement:

    A6:   α
= 0.665 deg, β = +3.0 arcmin (1.5 div		   
  61   Thu Feb 7 21:35:46 2013 KojiGeneralGeneralDmass's loan of LB1005 / A2&C2 sent to Fullerton / First Contact @40mDmass
borrowed the LB1005 servo amp from the OMC
lab.		  P2053119.jpgP2053120.JPG 
  62   Thu Feb 7 23:01:45 2013 KojiOpticsCharacterizationUV epoxy gluing test [Jeff, Yuta, Koji]
Gluing test with UV-cure epoxy
Optocast 3553-LV-UTF-HM		   
  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:		   
  66   Fri Mar 1 23:52:18 2013 KojiOpticsCharacterizationWedge measurement with the autocollimator and the rotation stageMeasurement:

    E1:   α = 
0.672 deg, β = +0.0  arcmin (0 div up)
  
  69   Thu Mar 7 15:53:47 2013 KojiMechanicsGeneralOMC Transportation fixture, OMC PD/QPD mounts   P3073218.JPGP3073219.JPGP3073223.JPGP3073225.JPGP3073227.JPG 
  70   Thu Mar 14 17:06:21 2013 KojiMechanicsGeneralOMC SUS work @LLOEDIT (ZK): All photos on
Picasa. Also, I discovered that		  2013-03-14_16.03.40.jpg2013-03-14_16.04.07.jpg 
  71   Thu Mar 14 22:18:23 2013 KojiGeneralGeneralNew loans for the diode testALL
returned

Loan
from ATF:		   
  72   Fri Mar 15 02:15:45 2013 KojiElectronicsCharacterizationDiode testingDiode testing
o Purpose of the measurement
- Test Si QPDs (C30845EH) for ISC		  QPD_GR_TEST_130316.pdf 
  73   Sun Mar 17 21:59:47 2013 KojiElectronicsCharacterizationDiode testing ~ DCPD- For the dark noise measurement, the lid
of the die-cast case should also contact
to the box for better shielding. This made		  OMCPD_TEST_130317.pdf 
  75   Sat Mar 23 02:32:23 2013 KojiFacilityGeneralN2 cylinder deliveredPreparation for ionized N2 blow
- 99.9998% N2 cylinder delivered
(ALPHAGAZ 2 grade by AIR LIQUIDE) ALPHAGAZ		  P3233349.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 
  77   Sat Mar 23 13:34:14 2013 KojiOpticsGeneralPZT assembly prototype glued 
Prototype
PZT assembly		  P3223322.jpgP3223323.jpgP3233336.jpgP3233348.jpg 
  78   Sat Mar 23 16:36:15 2013 KojiElectronicsCharacterizationDiode QE measurementQuantum efficiencies of the C30665GH
diodes were measured. 
- The diode was biased by the FEMTO		  P3213308.JPGP3213310.JPG 
  79   Mon Mar 25 02:04:05 2013 KojiGeneralGeneralOMC building plan / procedure ~ WB18WB 18 March 

    Diode test
    
        Dark current		   
  80   Mon Mar 25 18:34:25 2013 KojiGeneralGeneralOMC building plan / procedure ~ Mar 25 Mon25 March (Mon): 
Inspect the test PZT assembly

    => Give it to Bob. 		   
  81   Mon Mar 25 19:31:16 2013 KojiOpticsGeneralOMC Top-side gluing[Koji Jeff Zach]  
AAA
 P3253353.jpgP3253372.jpgP3253394.jpgP3253400.jpg 
  82   Tue Mar 26 22:33:07 2013 KojiGeneralGeneralLoan for the OMC buildingLoan from PSL Lab
- 300mm mirror with Ultima mount
and pedestal		   
  83   Wed Mar 27 20:54:45 2013 KojiGeneralGeneralOMC building plan / procedure ~ Mar 26 Mon26 March (Tue):
- Curved mirror characterization
(Koji, done)		   
  84   Wed Mar 27 20:54:54 2013 KojiGeneralGeneralOMC building plan / procedure ~ Mar 27 Wed27 March (Wed)
- AOM drift investigation (Lisa,
Zach)		   
  85   Wed Mar 27 20:55:10 2013 KojiGeneralGeneralOMC building plan / procedure ~ Mar 28 Thu28 March (Thu): 

    Rebuild the bottom template
in the lab
    Place the bottom		   
  88   Mon Apr 1 03:13:41 2013 KojiOpticsGeneralFailure of PZT-glass joints[Koji, Jeff, Zach, Lisa]
We glued a test PZT-mirror assembly
last week in order to make sure the heat		   
  89   Mon Apr 1 03:23:48 2013 KojiOpticsGeneralUV power calibration[Koji Lisa Jeff Zach]
Eric G bought a UV power meter from
American Ultraviolet.		   
  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 
  91   Mon Apr 1 18:17:01 2013 KojiOpticsGeneralMirror curvature center testLocations of the curvature minimum
on the OMC curved mirrors have been measured.
  6x 
  92   Wed Apr 3 17:39:38 2013 KojiMechanicsCharacterizationCalibration of the test PZTs before the glue testWe want to make sure the responses of the
PZT actuator does not change after the EP30-2
gluing.		  P4033491.JPGshadow_sensor_calib.pdf 
  93   Wed Apr 3 18:42:45 2013 KojiOpticsGeneralEP30-2 gluing testEP30-2 gluing test
  
  95   Thu Apr 4 01:35:04 2013 KojiOpticsCharacterizationMode matching to the OMC cavityThe fiber output was matched with the lenses
on a small bread board.
The detailed configuration is found		   
  96   Thu Apr 4 01:43:06 2013 KojiOpticsCharacterizationMirror T measurement[Zach, Koji]
The measurement setup for the transmission
measurement has been made at the output of		   
  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		   
  98   Fri Apr 5 14:39:26 2013 KojiMechanicsCharacterizationCalibration of the test PZTs after the heat cureWe attached fused silica windows on the
test PZTs. http://nodus.ligo.caltech.edu:8080/OMC_Lab/93
The glued assemblies were brought		  shadow_sensor_calib_after_bake.pdfPZTresponse.pdf 
  100   Mon Apr 8 11:11:37 2013 KojiOpticsCharacterizationMore Mirror T measurementMore Ts of the mirrors were measured.
A mirror specification:
Request: 8300+/-800 ppm		   
  101   Mon Apr 8 11:29:08 2013 KojiOpticsCharacterizationMirror/PZT Characterization links
    Mirror
List
    http://nodus.ligo.caltech.edu:8080/OMC_Lab/152		   
  102   Mon Apr 8 11:49:18 2013 KojiMechanicsCharacterizationPZT actuator tested at LLOTest result of the PZTs by Valera and Ryan
PZT  Length Angle
 #
  [nm/V] [urad/um]
 11  14.5   17.6
  
  103   Mon Apr 8 20:56:52 2013 KojiOpticsConfigurationPZT & Curverd Mirror arrangementAssembly #1:
Mounting Prism #16
PZT #26		  PZT_assembly.pdf 
  104   Mon Apr 8 21:11:14 2013 KojiOpticsGeneralPZT assembly gluing[Jeff, Zach, Koji] 
PZT assembly gluing
Glue gun -> to be returned to		   
  105   Mon Apr 8 23:42:33 2013 KojiOpticsConfigurationFake OMC roughly alignedMode matching:
 		  beam_profile.pdfmode_matching.pdf 
  106   Tue Apr 9 13:56:09 2013 KojiOpticsGeneralPZT assembly post gluing / pre baking pictures 
  
  108   Thu Apr 11 15:10:22 2013 KojiGeneralGeneralOMC Progress[Zach, Jeff, Koji]

- Jeff configured the bottom
side template to have a nominal value		   
  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)		   
  110   Sat Apr 13 21:06:02 2013 KojiOpticsGeneralOMC Bottom-side: cavity glued[Jeff, Zach, Lisa, Koji]
Gluing of the cavity mirrors went		  Cav_scan_response_130412_Pitch.pdfCav_scan_response_130412_Yaw.pdf 
  111   Tue Apr 16 00:40:45 2013 KojiOpticsGeneralPD/QPD path gluing ~ preparation[Jeff Koji]
- Placed the optics on the PD/QPD
path		   
  112   Tue Apr 16 08:12:14 2013 KojiOpticsCharacterizationFurther More Mirror T measurementT&Rs of the B mirrors and some of the
E mirrors are measured.
I found that 		   
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