40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
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ID Date Author Typedown Category Subject Text Attachments
  420   Thu Jul 21 14:55:48 2022 KojiGeneralGeneralOptics bonding for the backscatter measurementThe backscatter beam is supposed to appear
in the backpropagation path. The transmission
of the OMC has a couple of optics, it's
 IMG_1098.JPG 
  421   Thu Jul 21 17:47:00 2022 KojiGeneralGeneralThe profile of the beam incident on the fiber input couplerThe profile of the beam incident on the
fiber input

The fiber input was deflected by
 fiber_beam_profile.pdf 
  422   Fri Jul 22 00:31:17 2022 KojiGeneralGeneralOMC #002 backscatter measurementMeasure the power ratio between the forward-propagating
and reverse-propagating beams.


Place a small deflecting
 OMC_backscatter.pdf 
  423   Fri Jul 22 17:41:01 2022 KojiGeneralGeneralSRS LCR meter SRS720 returned to DownsSRS LCR meter SRS720 was returned to Downs
as before.

 
 PXL_20220723_002330805.jpg 
  424   Fri Jul 22 17:47:38 2022 KojiGeneralGeneralC&B request for the reinforcement blocksOMC Reinforcement blocks

1. P/N D1600316; Version v4; Type
01; Qty 30; Source Chemistry Machine Shop
 PXL_20220722_222013127.jpg 
  425   Mon Jul 25 18:25:04 2022 KojiGeneralGeneralA/C Filter was replaced
New filter PN
Grainger
TK70457312T Mini-Pleat Air Filter,
  
  426   Tue Jul 26 00:01:59 2022 KojiGeneralGeneralOMC #002 delamination check 2More epoxy delamination check:

DCPD R (Attachment 1):
Found half delaminated
 IMG_1106.JPGIMG_1107.JPGIMG_1110.JPG 
  427   Tue Jul 26 00:12:58 2022 KojiGeneralGeneralHigh QE PD: QE measurements- Installed the High QE PDs to OMC #002


B1-22@Cage B1 was
installed to the transmission DCPD
B1-23@Cage
 IMG_1118.JPG 
  428   Wed Jul 27 10:09:51 2022 KojiGeneralGeneral4+4 wire clamp in handRegarding: D1200971

- 4 CLASS A wire clamp obtained
 PXL_20220727_072154009.jpg 
  429   Wed Jul 27 10:34:09 2022 KojiGeneralGeneralHigh QE PD: QE measurements 2- DLPCA-200 trans-impedance amplifier was
calibrated.
  Keithley source meter 2450
 IMG_1119.JPGIMG_1120.JPG 
  430   Wed Jul 27 10:34:30 2022 KojiGeneralGeneralOMC #002 Protective FirstContact PaintThe optical surfaces were coated with FirstContact
to keep them clean / somewhat protected during
the transportation.
 IMG_1125.JPG 
  431   Wed Jul 27 23:52:18 2022 KojiGeneralGeneralOMC #002 Cable bracket replacement (1)Parts
check

- D1300052-V3 SN001 is going to
 IMG_1126.JPGIMG_1135.JPGIMG_1127.JPGIMG_1129.JPGIMG_1130.JPG 
  432   Thu Jul 28 00:28:15 2022 KojiGeneralGeneral OMC #002 Cable bracket replacement (2) Connector
unmounting

- (Attachment 1)
 IMG_1132.JPGIMG_1133.JPGIMG_1136.JPG 
  433   Thu Jul 28 00:46:47 2022 KojiGeneralGeneral Subject: OMC #002 Cable bracket replacement (3)Checking the spare parts 

- Conclusion for OMC#2:
need PEEK cable
 IMG_1137.JPGIMG_1148.JPGIMG_1138.JPG 
  434   Wed Aug 10 18:42:27 2022 KojiGeneralGeneralOMC #002 Cable bracket replacement (4)[Stephen Koji]

Now we got the C&Bed parts
to continue to work on the cable bracket
 PXL_20220809_235457354.jpgPXL_20220811_011910569.jpgPXL_20220811_013746139.jpg 
  435   Thu Aug 11 15:24:57 2022 KojiGeneralGeneralOMC #002 Cable bracket replacement (5)- The hole size extension
is going forwared now.
  
  436   Mon Aug 15 21:31:56 2022 KojiGeneralGeneralOMC #002 Cable bracket replacement (6) The cable bracket was successfully
replaced.


Looking from the QPD side
 IMG_1155.JPGIMG_1149.JPGIMG_1150.JPG 
  437   Mon Aug 15 22:06:18 2022 KojiGeneralGeneralOMC #002 new cable tie installed[Stephen Koji]

New cable ties were installed on
the cable pegs attached to the long sides
 IMG_1929.JPGIMG_1930.JPG 
  438   Mon Aug 15 22:43:35 2022 KojiGeneralGeneralOMC #002 Delamination repair Part1 (1)[Stephen Koji]

Checked the delamination
status:
 IMG_1926.JPGPXL_20220816_011346581.jpg 
  439   Mon Aug 15 22:49:03 2022 KojiGeneralGeneralOMC #002 Delamination repair Part1 (2)EP30-2
preparation


Two Al foil cups + A sheet
 7x 
  440   Wed Aug 24 02:51:23 2022 KojiGeneralGeneralOMC #002 Delamination repair Part1 (3)Inspection of the bonding on the
suspension interface side. All look good.
 8x 
  441   Wed Aug 24 02:53:46 2022 KojiGeneralGeneralOMC #002 Delamination repair Part2 (1)Inspection of the delaminations in the
optics side
 IMG_1168.JPGIMG_1169.JPGIMG_1170.JPGIMG_1171.JPGIMG_1175.JPG 
  442   Wed Aug 24 02:57:43 2022 KojiGeneralGeneralEP30-2 bonding setupEP30-2 bonding setup  IMG_1178.JPGIMG_1179.JPGIMG_1180.JPG 
  443   Wed Aug 24 03:20:59 2022 KojiGeneralGeneralOMC #002 Delamination repair Part2 (2)Bonding  11x 
  444   Wed Aug 24 03:26:43 2022 KojiGeneralGeneralOMC #002 Delamination repair Part2 (3)Inspection

 
 8x 
  445   Wed Aug 24 11:29:47 2022 KojiGeneralGeneralOMC #002 ready for shipment[Stephen Koji]

The OMC #002 is ready for
shipment.
 IMG_1207.JPGPXL_20220825_004259850.jpgPXL_20220825_004307204.jpgPXL_20220825_005423342.jpgPXL_20220825_005549985.jpg 
  446   Thu Aug 25 14:22:08 2022 KojiGeneralGeneralLLO OMC #001 Ballast Mass investigationInspected the past LLO add-on mass configuration.

There are unknown masses at the
DCPD side. It looks like a small SS mass
 DSCN0917.JPGDSCN0922.JPGP6108705.JPGP6108707.JPGP6108706.JPG 
  447   Thu Aug 25 20:05:00 2022 KojiGeneralGeneralLLO OMC #001 Ballast Mass investigationHere is the balance mass info for the LLO
OMC#001 analyzed from the photographs


Added masses are: 50+10g,
 balance_mass_config_LLO.pdf 
  448   Fri Aug 26 22:29:02 2022 KojiGeneralGeneralTool Shipping PrepShipping preparation for the LLO
trip

Started
July 15, 2022 and finished Aug 30. So it
 PXL_20220831_025623318.jpgPXL_20220831_024518032.jpgPXL_20220831_030234581.jpg 
  449   Tue Sep 20 08:54:33 2022 KojiGeneralGeneralPD cage arrangementUpon the LLO work, the current PD arrangement
in the cages are:
CAGE B
  
  450   Mon Sep 26 14:27:49 2022 KojiGeneralGeneralLLO OMC ICS workOMC
#001


ICS Link: https://ics.ligo-la.caltech.edu/JIRA/browse/ASSY-D1201439-1
Already
  
  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.
  
  412   Thu Jun 23 21:03:33 2022 KojiFacilityGeneralMoving the small optical table to CAML (TCS Lab)I've cleared the small optical table
and wondered how to move it out of the room.
Fortunately, the north side of the big table
 PXL_20220624_035628602.jpg 
  25   Tue Oct 9 05:03:15 2012 KojiElectronicsGeneralOMC Test Electronics Setup   electronics_setup.pngelectronics_setup.pdf 
  36   Thu Nov 8 19:47:55 2012 KojiElectronicsConfigurationSolder for PZTsRich saids:
I
  
  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 
  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 
  131   Thu May 30 14:38:42 2013 KojiElectronicsGeneralCable fitting Yesterday Jeff and Chub worked on the cabling
of the OMC. It turned out that the gender
of the cable connectors 
  
  156   Thu Aug 22 15:40:15 2013 KojiElectronicsConfigurationPZT endurance test[Koji, Jeff]
Background
In response to the failure of one
 P8214340.jpgP8214337.jpgIR_0457.jpgIR_0461.jpg 
  157   Fri Aug 23 19:24:32 2013 KojiElectronicsConfigurationPZT endurance test (II)The
PZT tests were finished with the conclusion
that the PZT won't be damaged with our expected
 PZT_shaking.png 
  203   Thu Jul 10 01:39:38 2014 KojiElectronicsGeneralPZT wireRich came to the OMC lab. Pins for the
mighty mouse connector were crimped on the
4 PZT wires.
 P7096669.JPG 
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