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ID Date Author Typeup Category Subject Text Attachments
  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!
  
  141   Mon Jun 10 10:04:37 2013 KojiGeneralGeneral[LLO] OMC Test[Koji Zach]
We worked on the OMC test over
the weekend.
 OMC_pow_cal.pdfresponsivity.pdfOMC_pow_cal_compensated.pdf 
  142   Thu Jun 13 12:04:57 2013 KojiGeneralGeneral[LLO] OMC Optical Test - completedhttps://alog.ligo-la.caltech.edu/aLOG/index.php?callRep=7373   
  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
  
  144   Fri Jun 14 06:35:21 2013 JeffGeneralGeneral[LLO] L1 OMC statushttps://alog.ligo-la.caltech.edu/aLOG/index.php?callRep=7410
Weights:
Suspension cage and transportation
 preamp_arrangement.png 
  146   Tue Jun 18 15:45:38 2013 KojiGeneralGeneral[LLO] OMC installation in HAM6OMC installed
in HAM6!
  
  147   Fri Jun 28 12:20:49 2013 KojiGeneralGeneralDmass's loan of Thorlabs HV amphttp://nodus.ligo.caltech.edu:8080/Cryo_Lab/799
(KA: Returned upon H1OMC building)
  
  149   Fri Aug 9 10:09:56 2013 KojiGeneralGeneralPZT Assembly #3/#4Yesterday, Jeff and I bonded the PZT assemblies
(#3/#4).
The attached is the arrangement of
 PZT_assembly.pdf 
  150   Mon Aug 12 20:22:19 2013 KojiGeneralGeneralPZT Assembly #5/#6PZT Assembly #5/#6 were glued on Fri Aug
9th
They are removed from the fixture
  
  153   Fri Aug 16 17:21:38 2013 KojiGeneralGeneral[OMC002] Build started[Jeff Koji]

The breadboard (SN2) was loaded
on the transportation fixture.
  
  164   Fri Aug 30 12:25:29 2013 KojiGeneralGeneralH1 OMC Invar mount gluingThe Invar Mounting Blocks were glued on
the breadboard.
Serial number #1/2/5/6/7/8 ->
 P8304368.JPGP8304370.JPG 
  165   Tue Sep 3 17:03:25 2013 KojiGeneralGeneralH1 OMC gluing completed[Koji Jeff]
H1 OMC
  
  166   Wed Sep 4 22:22:54 2013 KojiGeneralGeneralH1 OMC wrapped and moved to the bake lab.[Koji, Jeff]
We moved the H1OMC to the bake lab.
Chub set up the vacuum bake oven
  
  167   Sat Sep 7 17:20:56 2013 KojiGeneralGeneralOMC/PD lab optical table wrapping[Koji Jeff]
In order to prepare for the splinkler
installation on the HEPA enclosure, the table
 P9064377.JPG 
  168   Fri Sep 13 15:09:20 2013 KojiGeneralGeneralSprinkler installation: doneA sprinkler head was installed on the HEPA
enclosure. The head is covered with a plastic
cap.
 P9134379.jpgP9134378.jpg 
  173   Tue Oct 22 17:17:59 2013 KojiGeneralGeneralH1OMC cabling[Chub, Jeff, Koji]
We worked on the wiring and routing
of the cables.
  
  174   Wed Oct 23 02:45:07 2013 KojiGeneralGeneralPD realignmentDCPD2 got misaligned during the cable installation.
The PD alignment procedure have been gone
through again.
  
  175   Mon Nov 4 19:43:56 2013 KojiGeneralGeneralH1OMC PackedH1OMC PZT connector was replaced with the
correct one. This was the final step for
H1OMC.
  
  176   Thu Nov 21 00:05:35 2013 KojiGeneralGeneralH1OMC electronics arrangementChecked the PZT arrangement: Mighty Mouse
Pin1&2 -> PZT2 (DCPD side), Mighty
Mouse Pin3&4 -> PZT1 (QPD side)
 H1OMC_cable_arrangement.pdf 
  177   Tue Dec 10 16:41:51 2013 KojiGeneralGeneralTo BuyMasks / Wipes => done   
  178   Tue Feb 18 18:58:38 2014 KojiGeneralGeneralLHO H1 OMC installation photosLHO OMC installation photos
  
  179   Fri Feb 28 19:50:11 2014 KojiGeneralGeneralMisalignment ABCD matrix for the aLIGO OMCRelationship between mirror misalignment
and cavity mode shift was calculated.
The technique described in T0900647
 misalignment.pdf 
  180   Mon Mar 3 02:46:21 2014 KojiGeneralCharacterizationSpot positions scannedSpot positions on CM1 and CM2 scanned according
to the recipes provided by the previous entry.
The best result obtained was:
  
  190   Tue Jun 24 18:43:15 2014 KojiGeneralGeneralICS entries for the OMC baking/assemblyFor baking:

    Assembly Name aLIGO Output
Mode Cleaner
  
  191   Fri Jun 27 12:29:50 2014 KojiGeneralGeneralOMC bakingThe OMC went into the oven at around 2PM
on Thursday. It will be baked at 80degC for
48 hours.
 P6266536.jpg 
  192   Fri Jun 27 18:51:33 2014 KojiGeneralGeneralSupplyPTOUCH TAPE (12mm white) x 2
9V batteries
  
  193   Wed Jul 2 16:41:43 2014 KojiGeneralGeneralOMC bakingOMC is back from the oven today.
To Do:
Optical tests
  
  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 
  200   Mon Jul 7 01:36:03 2014 KojiGeneralGeneralTo DoOptical tests

    Cleaning

   Power Budget
  
  201   Tue Jul 8 04:08:06 2014 KojiGeneralGeneralExpoxy reapplication for beam dumpsFirstly, the excess epoxy was removed using
a cleaned razor balde
  
  204   Thu Jul 10 08:34:57 2014 KojiGeneralGeneralTo DoOptical tests

    Cleaning

   Power Budget
  
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