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  OMC elog, Page 1 of 10  Not logged in ELOG logo
ID Date Authorup Type Category Subject Text Attachments
  309   Thu Sep 27 20:19:15 2018 AaronOpticsGeneralMontecarlo simulation of the phase difference between P and S pols for a modeled HR mirrorI started some analytic calculations of
how OMC mirror motion would add to the noise
in the BHD. I want to make some prettier
  
  310   Thu Nov 1 19:57:32 2018 AaronOpticsGeneralMontecarlo simulation of the phase difference between P and S pols for a modeled HR mirrorI'm still not satisfied/done with the
solution to this, but this has gone too long
without an update and anyway probably someone
  
  451   Mon Nov 7 21:16:16 2022 CamilleOpticsConfigurationSetting up the fiber couplers[Camille, Koji]

Began setting up fiber assembly
for OMC testing:
 PXL_20221108_003849213.jpgPXL_20221108_003909265.jpgPXL_20221108_003929309.jpg 
  454   Mon Nov 14 08:34:45 2022 CamilleOpticsCharacterizationtransmission measurements through OMC #1 (before cleaning)[Camille, Koji]

Friday, Nov 11th, 2022

Setting up OMC #1 for transmission
 PXL_20221111_200942943.jpgPXL_20221111_200957951.jpg 
  456   Tue Nov 15 07:46:58 2022 Camille MakaremOpticsGeneralcleaning OMC #1Monday, November 14, 2022

Camille and Koji did a "deep
cleaning" of OMC#1:
  
  461   Fri Nov 18 18:41:05 2022 Camille MakaremGeneralGeneral2nd deep cleaning of OMC #1The four cavity mirrors in OMC #1 were
each scrubbed using acetone and a cotton
swab.
 PXL_20221118_213955948.jpg 
  362   Thu May 16 12:41:28 2019 ChubGeneralGeneralfire pillow found on optics tableThat is an expanding fire pillow, also
known as firebrick.  It is used to create
a fire block where holes in fire-rated walls
  
  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 
  346   Thu Apr 18 20:47:54 2019 JoeOptics OMC initial alignment and locking[Joe, Phillip, Koji, Stephen]

*draft post, please add anymore
info if I missed something*
 IMG_7676.JPGIMG_7666.JPGIMG_7670.JPGIMG_7883.JPGIMG_7882.JPG 
  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 
  351   Mon Apr 22 09:54:21 2019 JoeGeneral Shortening cavity (A5,A14,PZT11,PZT22) to get closer to design FSR[Koji,Joe,Philip,stephen]

in units 20um per div on the micrometer
[n.b. we reailised that its 10um per div
 CM1_IMG_7699.jpgCM2_IMG_7697.jpg 
  353   Tue Apr 23 10:21:12 2019 JoeOpticsConfigurationMoving the spots to the centre of the curved mirrors[Koji,Philip, Liyuan, Joe]

CM1:

We moved the curved mirrors to
 FSR_detuned_locking.pdfCM1_IMG_7702.JPGCM2_IMG_7704.JPG 
  354   Wed Apr 24 13:58:51 2019 JoeOpticsCharacterizationOMC power budget and UV Epoxy Bonding of BS1[koji,philip,joe,liyuan,stephen]

need to add spot positions.

Mirrors: PZT11,PZT22, A14, A5
  
  355   Thu Apr 25 15:05:19 2019 JoeOpticsCharacterizationLooking at PZT HOM spacing dependance and thinking about workflow[koji, joe]

The template or glass breadboard
was wobbling, and we noticed that the caivty
  
  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.
  
  10   Mon Jul 23 17:15:14 2012 KojiCleanGeneralTalking with MargotI consulted with Margot about the cleaning
of the optics

    Optics are considered
  
  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]
  
  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 
  16   Mon Aug 13 16:59:11 2012 KojiCleanGeneralRoom Cleaning LogFloor wiped with a wet wiper (Aug 13, 2012)
Floor wiped with a wet wiper (Aug
15, 2012)
  
  17   Mon Aug 13 17:01:35 2012 KojiCleanGeneralParticle CountsAug 13, 2012 / 0.5um 1000~2000/(0.1 cu
ft) / 0.7um   400-600/(0.1 cu ft)
by ATF particle counter (MET ONE 227A)
  
  18   Tue Aug 14 03:29:06 2012 KojiSupplyGeneralClean supply rackClean supplies & some cleaning tools
are located at the right side of the entrance.
The file cabinet there was moved to
 P8131959.JPGP8131961.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 
  20   Tue Sep 25 14:18:14 2012 KojiCleanGeneralParticle CountsParticle counts
Before the prefilter is installed:
0.5um 1191cnts, 0.7um 346cnts
  
  21   Mon Oct 1 16:06:55 2012 KojiCleanGeneralParticle Counts1. It turned out that the particle
counter MET ONE 227A at ATF shows 
(particle count)/(0.1 ft^3) 
  
  22   Fri Oct 5 03:39:58 2012 KojiOpticsGeneralRoC Test setupBased on Zach's experiment design, I wrote
up a bit more detailed optical layout for
the mirror test.
 RoC_test_setup.pdfRoC_test_setup.png 
  23   Mon Oct 8 11:30:47 2012 KojiOpticsGeneralEG&G 2mm photodiode angle responseEGE&G 2mm photodiode angle response
measured by Sam T1100564-v1
  
  24   Tue Oct 9 04:59:24 2012 KojiOpticsGeneralOMC Test Optical Setup   OMC_test_setup.pngOMC_test_setup.pdf 
  25   Tue Oct 9 05:03:15 2012 KojiElectronicsGeneralOMC Test Electronics Setup   electronics_setup.pngelectronics_setup.pdf 
  26   Fri Oct 12 17:15:19 2012 KojiOpticsGeneralLoan from the 40m / ATF
    HWP set
         
    
  
  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]
  
  30   Wed Oct 17 20:36:04 2012 KojiOpticsGeneralRoC test cavity lockedThe RoC test setup has been built on
the optical table at ATF.
 detailed_RoC_setup.pdfomc_cav_lock_SCRN_SHOT.pngCav_scan_response_20121016.pdf 
  31   Thu Oct 18 20:23:33 2012 KojiOpticsCharacterizationImproved measurementSignificant
improvement has been achieved in the RoC
 Cav_scan_response_zoom_20121017.pdfdetailed_RoC_setup.pdf 
  32   Wed Nov 7 01:28:20 2012 KojiOpticsCharacterizationWedge angle test (A1)Wedge
angle test
Result: Wedge angle of Prism A1:
 wedge_measurement.pngwedge_measurement_setup.png 
  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 
  35   Thu Nov 8 13:24:53 2012 KojiOpticsCharacterizationMore wedge measurementA1
Horiz Wedge    0.497   
+/-    0.004 deg
 wedge_measurement_overall.pdf 
  36   Thu Nov 8 19:47:55 2012 KojiElectronicsConfigurationSolder for PZTsRich saids:
I
  
  37   Thu Nov 8 19:52:57 2012 KojiOpticsGeneralHow to apply UV epoxyKA's question:
Do
 UVepoxy.jpg 
  38   Thu Nov 8 20:12:10 2012 KojiOpticsConfigurationHow many glass components we need for a plateOptical prisms 50pcs (A14+B12+C6+E18)
Curved Mirrors 25pcs (C13+D12)
  
  39   Fri Nov 9 00:43:32 2012 KojiOpticsCharacterizationFurther more wedge measurementNow it's enough for the first OMC (or even
second one too).
Today's measurements all distributed
 wedge_measurement_overall.pdf121108a_A1.pdf 
  40   Sat Nov 17 02:31:34 2012 KojiOpticsCharacterizationMirror T testMirror T test
The mirror was misaligned to have
~2deg incident (mistakenly...) angle.
  
  41   Mon Nov 19 13:33:14 2012 KojiOpticsCharacterizationResuming testing mirror RoCsIn order to resume testing the curvatures
of the mirrors, the same mirror as the previous
one was tested.
 Cav_scan_response_zoom_20121016.pdf 
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