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ID Date Author Typeup Category Subject Text Attachments
  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 
  304   Tue Aug 7 15:43:12 2018 KojiElectronicsCharacterizationNew LLO EOM stuffed[Rich, Dean, Koji]

Stuffed all inductors for the new
LLO EOM. As the impedances were sensitive
 P_20180806_154457.jpgimpedance_eom.pdfimpedance_eom_zoom.pdf 
  385   Tue Oct 22 15:54:59 2019 KojiElectronicsLoan / LendingBorrowed LB1005 from Cryo CavFrom Cryo Cav setup

Borrowed LB1005 Servo box ->
OMC
  
  402   Sat Nov 21 13:58:30 2020 KojiElectronicsCharacterizationDark Current Measurement for InGaAs QPDsDark current measurement for InGaAs QPDs
(OSI FCI-InGaAs-Q3000) has been done using
Keithley 2450 and Frank's diode test
 Q3000_dark_current.pdf 
  403   Sun Nov 22 13:49:12 2020 KojiElectronicsCharacterizationImpedance Measurement for InGaAs QPDsTo know any anomaly to the junction
capacitance of the QPD segments, the RF impedances
were tested with a hand-made impedance measurement.
 impedance_measurement.pdfP_20201121_183830.jpgimpedance_test.pdfQ3000_impedance_test.pdf 
  404   Mon Nov 23 23:17:19 2020 KojiElectronicsCharacterizationThe dark noise of the Q3000 QPDsThe dark noise levels of the four Q3000
QPDs were measured with FEMTO DLPCA200 low
noise transimpedance amp.
 Q3000_dark_noise_81.pdfQ3000_dark_noise_82.pdfQ3000_dark_noise_83.pdfQ3000_dark_noise_84.pdf 
  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
  
  406   Tue Nov 24 12:27:18 2020 KojiElectronicsCharacterizationThe dark noise of the Q3000 QPDsThe amplifier BW was 400kHz at the gain
of 1e7 V/A. And the max BW is 500kHz even
at a lower gain. I have to setup something
  
  3   Wed Jun 20 00:10:53 2012 KojiFacilityGeneralHole on the wall was patched   P6191706.jpg 
  14   Wed Aug 1 19:35:00 2012 KojiFacilityGeneralFloor cleaned / Workbench being built / Table top defect-
The floor of the room was cleaned and waxed!
-
 P8011949.JPGP8011947.JPGP8011948.JPG 
  15   Sat Aug 11 00:59:14 2012 KojiFacilityGeneralLaser Safety BarrierIt seemed that a laser safety barrier was
installed today!?
 P8131960.JPG 
  19   Wed Aug 22 20:16:43 2012 KojiFacilityGeneralWorkbenches have been installed / Clean room stoolsLast Friday, new workbenches were installed.
Vladimir got a new table and a cleanroom
stool.
 P8171968.jpgP8171969.jpg 
  46   Wed Dec 26 14:33:33 2012 KojiFacilityGeneralLase Interlock wiredTwo switches are connected in series.  PC263073.jpgPC263074.jpgPC263075.jpg 
  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 
  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 
  288   Fri Sep 8 15:14:05 2017 KojiFacilityGeneralPreparation for the plumbing work[Steve, Aaron, Koji]

We've finished the preparation
for the forthcoming plumbing work on (nominally)
 7x 
  391   Mon Aug 10 15:34:04 2020 KojiFacilityLoan / LendingGlue bake ovenBlack and Decker Glue Baking Oven came
back to the OMC lab on Aug 10, 2020, Georgia
had lent the unit for the SAMS assembly/testing.
  
  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
    
  
  7   Sat Jul 14 02:16:07 2012 KojiGeneralGeneralPlan Update: JulyFacility/Supplies

    Work in progress
 P7071878.jpg 
  11   Tue Jul 24 11:41:29 2012 KojiGeneralGeneralUseful referencesNicolas Smith,
LIGO Document T0900383-v1
  
  12   Tue Jul 31 21:29:43 2012 KojiGeneralGeneralWork completed in July [!]
    Completed Work: Facility/Supplies

   
        
  
  13   Tue Jul 31 21:33:17 2012 KojiGeneralGeneralPlan Update: August [!]Completed work of the previous months:
[Jul]
[Aug] [Sep] [Oct] [Nov] [Dec]
  
  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:

  
  28   Tue Oct 16 15:50:09 2012 KojiGeneralGeneralWork completed in August/September [!]
    Work done
   

        
  
  29   Tue Oct 16 15:51:01 2012 KojiGeneralGeneralPlan Update: October [!]Completed work of the previous months:
[Jul]
[Aug]
  
  33   Wed Nov 7 20:21:42 2012 KojiGeneralGeneralWork completed in October [!]Completed work of the previous months:
[Jul]
[Aug]
  
  34   Wed Nov 7 20:44:11 2012 KojiGeneralGeneralPlan Update: November [!]Completed work of the previous months:
[Jul]
[Aug]
 OMC_Project_Schedule.pdf 
  47   Mon Dec 31 01:45:04 2012 KojiGeneralGeneralWork completed in Nov and Dec [!]Completed work of the previous months:
[Jul]
[Aug]
  
  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 
  71   Thu Mar 14 22:18:23 2013 KojiGeneralGeneralNew loans for the diode testALL
returned

Loan
from ATF:
  
  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. 
  
  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
  
  108   Thu Apr 11 15:10:22 2013 KojiGeneralGeneralOMC Progress[Zach, Jeff, Koji]

- Jeff configured the bottom
side template to have a nominal value
  
  116   Thu Apr 18 11:43:59 2013 KojiGeneralGeneralMounting Glass Bracket Failure[Jeff, Koji]
- While we were working on the optics
alignment, one of the mounting brackets made
  
  118   Thu Apr 18 11:59:02 2013 KojiGeneralGeneralDCPD path gluing[Jeff, Koji]
DCPD path gluing
  
  119   Fri May 3 21:09:08 2013 KojiGeneralGeneralOMC is backL1 OMC is back on the table for the action
next week.
  
  122   Wed May 8 15:36:50 2013 KojiGeneralGeneralLatest OMC schedule
May
(done) Mon  6th:
Invar plate arrival / Spot position measurement
(done)
Tue  7th: Invar plate cleaning / Spot position
  
  126   Mon May 13 15:00:23 2013 KojiGeneralGeneralCurrent most reliable OMC scheduleMay
Tue 14th The OMC
given to Bob (Air bake & Vac bake)

Mon
20th The OMC received from Bob
        
  
  128   Mon May 20 14:59:21 2013 KojiGeneralGeneralOMC is out from the ovenThe OMC came back to the table again.
No obvious change is visible: no
crack, no delamination
  
  129   Tue May 21 18:28:08 2013 KojiGeneralGeneralCurrent most reliable OMC schedule- The wrong Mighty Mouse connectors for
the PZT wires were prepared. The correct
ones are in the vacuum oven till Tuesday
  
  136   Mon Jun 3 21:19:03 2013 KojiGeneralGeneralPlanningMonday - Evening
(Koji)
[done] - DCPD alignment
  
  137   Wed Jun 5 01:06:35 2013 ZachGeneralCharacterizationL1 OMC as-built diagram D1300507
 
 L1OMC_asbuilt.pdf 
  138   Wed Jun 5 18:19:51 2013 KojiGeneralGeneralSome recent photos from the OMC final test at CITApplying First Contact for the optics cleaning
  
  139   Wed Jun 5 18:51:31 2013 KojiGeneralGeneralL1 OMC shipped out[Koji, Jeff]
The L1 OMC
 CAM00011.jpgP6054027.JPG 
  140   Fri Jun 7 16:04:44 2013 KojiGeneralGeneral[LLO] OMC arrived[Koji Zach Suresh]
The OMC arrived at LLO without any
destruction!
  
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