40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  OMC elog, Page 1 of 9  Not logged in ELOG logo
ID Date Author Typedown Category Subject Text Attachments
  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 
  123   Fri May 10 09:33:22 2013 KojiSupplyGeneralCOMSOL simulation on the glass bracket stress   COMSOL1.png 
  274   Thu Jan 19 20:57:53 2017 KojiSupplyGeneralPurchaseOrdered:

Office Depot
v AA battery Qty. 24
  
  275   Thu Feb 16 17:23:12 2017 KojiSupplyGeneralPurchase
BNC Patch Panel

8x
Amphenol Connex 112443 / Isolated BNC FEMALE
TO FEMALE BULKHEAD ISOLATED ADAPTER - 50
  
  321   Thu Apr 4 20:07:39 2019 KojiSupplyGeneralPurchase== Office Depot ==
Really
Useful Box 9L x 6 (delivered)
  
  375   Wed Sep 18 22:30:11 2019 StephenSupplyGeneralEP30-2 Location and StatusHere is a summary of the events of the
last week, as they relate to EP30-2.

1) I lost the EP30-2 syringes that
 IMG_5217.JPG 
  376   Wed Sep 18 23:16:06 2019 StephenSupplyGeneralItems staged at 40m Bake Lab for PZT Subassembly BondingThe following items are presently staged
at the 40m Bake Lab (see photo indicating
current location) (noting items broght by
 IMG_5216.JPGIMG_5215.JPG 
  384   Tue Oct 22 11:56:09 2019 StephenSupplyGeneralEpoxy Status update as of 22 October 2019The following is the current status of
the epoxies used in assembly of the OMC (excerpt
from C1900052)
 image_ep30-2_epoxy_kit_pcs_item_1582_location_downs_3303.JPG 
  407   Fri Feb 5 07:40:37 2021 StephenSupplyGeneralOMC Unit 4 Build Machined PartsOMC Unit 4 Build Machined Parts are currently
located in Stephen's office. See image
of large blue box from office, below.
 IMG_8117.JPG 
  411   Wed Jul 7 14:21:50 2021 StephenSupplyGeneralOMC Unit 4 Build Machined PartsMore explicit insights into the inventory
for the Unit 4 build. Image of inventory
included below.
 IMG_9238.JPGIMG_9236.JPG 
  4   Wed Jun 20 20:37:45 2012 ZachOpticsConfigurationTopology / parameter selectionEDIT (ZK): All the plots here were generated  8x 
  5   Thu Jun 21 03:07:27 2012 ZachOpticsConfigurationParameter selection / mode definitionEDIT 2 (ZK): As with the   geom_bowtie.pnggeom_non-bowtie.png 
  6   Fri Jun 29 11:26:04 2012 ZachOpticsCharacterizationRoC measurement setupHere is the proposed RoC measurement
setup. Koji tells me that this is referred
to as "Anderson's method".
 RoC_measurement_setup.pngRoC_measurement_setup.graffle.zip 
  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.
  
  9   Sun Jul 22 15:56:53 2012 ZachOpticsCharacterizationRoC measurement setupHere is a more detailed version of
the setup, so that we can gather the parts
we will need.
 detailed_RoC_setup.pngdetailed_RoC_setup.graffle.zip 
  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 
  26   Fri Oct 12 17:15:19 2012 KojiOpticsGeneralLoan from the 40m / ATF
    HWP set
         
    
  
  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 
  35   Thu Nov 8 13:24:53 2012 KojiOpticsCharacterizationMore wedge measurementA1
Horiz Wedge    0.497   
+/-    0.004 deg
 wedge_measurement_overall.pdf 
  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 
  42   Mon Nov 26 01:40:00 2012 KojiOpticsCharacterizationMore RoC measurementC1: RoC: 2.57845 +/− 4.2e−05m
 RoC_measurement.pdf 
  43   Thu Nov 29 21:18:23 2012 KojiOpticsGeneralOMC Mounting Prisms have come   PB293030.JPGPB293032.JPG 
  44   Tue Dec 18 20:04:40 2012 KojiOpticsCharacterizationPrism Thickness MeasurementThe thicknesses of the prism mirrors (A1-A5)
were measured with micrometer thickness gauge.
Since the thickness of the thinner
 prism.png 
  48   Mon Dec 31 03:10:09 2012 KojiOpticsGeneralSolidWorks model of the OMC breadboard   D1201439_aLIGO_Breadboard_layout_assy_121224.pngD1201439_aLIGO_Breadboard_layout_assy_130105.easm 
  49   Mon Dec 31 03:11:45 2012 KojiOpticsCharacterizationFurther more RoC measurementTotal (excluding C2, C7, C8): 2.575 +/-
0.005 [m]
New results
 Cav_scan_response_zoom_20121125_C6_9.pdf 
  50   Wed Jan 2 07:35:55 2013 KojiOpticsCharacterizationThickness of a curved mirrorMeasured the thickness of a curved mirror:
Took three points separated by 120
degree.
  
  51   Wed Jan 2 07:45:39 2013 KojiOpticsCharacterizationFirst Contact testConclusion:
Good. First contact did not damage the coating
surface, and reduced the loss
 Cav_scan_response_zoom_20121125_C2_before.pdfCav_scan_response_zoom_20121125_C2_after.pdf 
  53   Thu Jan 10 18:37:50 2013 KojiOpticsCharacterizationWedging of the PZTsYesterday I measured the thickness of the
PZTs in order to get an idea how much the
PZTs are wedged.
 PZT_wedging.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 
  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 
  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
  
  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)
  
  67   Tue Mar 5 19:37:00 2013 ZachOpticsCharacterizationeLIGO OMC visibility vs. power measurement detailsEDIT (ZK): Koji points out that (1 -
Ti) should really be the non-resonant reflectivity
of the aligned cavity, which is much closer
 eOMC_visibility_3_4_13.png 
  68   Wed Mar 6 23:24:58 2013 ZachOpticsCharacterizationeLIGO OMC visibility vs. power measurement detailsI found that, in fact, I had lowered
the modulation depth since when I measured
it to be 0.45 rads --> Psb = 0.1.
 TEK00005.PNGTEK00007.PNGeOMC_visibility_3_4_13.pngeOMC_AMTF_vs_power_3_6_13.png 
  74   Wed Mar 20 09:38:02 2013 ZachOpticsCharacterization[LLO] OMC test bench modified For various reasons, I had to switch
NPROs (from the LightWave 126 to the Innolight
Prometheus).
 new_setup_traced.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 
ELOG V3.1.3-