40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  OMC elog, Page 5 of 10  Not logged in ELOG logo
ID Date Author Type Category Subjectup Text Attachments
  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 
  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 
  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 
  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 
  71   Thu Mar 14 22:18:23 2013 KojiGeneralGeneralNew loans for the diode testALL
returned

Loan
from ATF:
  
  301   Tue Jul 3 12:07:47 2018 Rich AbbottElectronicsCharacterizationNotes on 3rd IFO EOMAttached please see my notes summarizing
the models for the electrodes and inductors
within the 3rd IFO EOM
 EOM_Analysis2.pdf 
  223   Wed Feb 18 21:51:23 2015 KojiGeneralGeneralNotes on OMC Transportation Fixtures & PelicanLLO has one empty OMC transportation fixture.

LHO has one empty OMC transportation
fixture.
  
  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 
  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 
  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 
  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 
  415   Mon Jul 18 14:20:09 2022 KojiGeneralGeneralOMC #002 Plan Portal==
Initial Preparation ==


[Done] OMC #002
  
  417   Thu Jul 21 02:55:06 2022 KojiGeneralGeneralOMC #002 Power Budget after mirror cleaningo Power Budget after FirstContact
cleaning (2022/07/20)
NPRO ADJ -50 (min)
  
  416   Tue Jul 19 03:17:56 2022 KojiGeneralGeneralOMC #002 Power Budget before mirror cleaningo Power Budget (2022/07/18)
NPRO ADJ -50 (min)
Fiber incident 62.8mW
  
  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 
  281   Fri Jun 23 01:58:11 2017 KojiOpticsGeneralOMC #002 Repair - CM1 gluing[Alena, Koji]

Jun 21: Alena and Koji
worked on gluing of the CM1 mirror on the
 6x 
  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 
  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 
  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 
  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 
  457   Tue Nov 15 10:58:53 2022 KojiOpticsGeneralOMC #1 damaged black glass removal[Camille, Koji]

The damaged black glass was removed
from the OMC breadboard leaving the glass
 PXL_20221114_222641455.jpgPXL_20221114_222544330.jpgPXL_20221114_222555849.jpgPXL_20221114_233748631.jpg 
  458   Tue Nov 15 11:12:24 2022 KojiOpticsGeneralOMC #1 fogging on the AR side of BS1 cleaned[Camille, Koji]

Photo of the BS1 AR cleaning process

Attachment 1: Before cleaning.
 PXL_20221114_225338114.jpgPXL_20221114_232824245.jpgPXL_20221114_233714774.jpgPXL_20221114_233748631.jpg 
  319   Tue Mar 19 17:30:25 2019 KojiGeneralCharacterizationOMC (002) Test itemsOMC #002 Optical tests


FSR
measurement (done, 2019/1/8-9, 2019/4/1)
  
  325   Fri Apr 5 23:30:20 2019 KojiGeneralGeneralOMC (002) repair completedOMC(002)
repair completed

When the cable harness of OMC(004)
 P_20190405_222401.jpgP_20190405_222509.jpgP_20190405_222529.jpg 
  127   Tue May 14 19:06:00 2013 KojiCleanGeneralOMC BakingThe OMC is in the air bake oven now.
  
  387   Fri Dec 13 14:59:18 2019 StephenGeneralGeneralOMC Beam Dump Production Cure Bake[Koji, Jordan, Stephen]

The beam dumps, bonded on Fri 06
Dec 2019, were placed in the newly tuned
 IMG_6080.JPGIMG_6079.JPG 
  388   Wed Dec 18 21:54:53 2019 KojiGeneralGeneralOMC Beam Dump Production Cure BakeThe beamdumps were taken out from the oven
and packed in bags.

The bottom of the V are completely
 P_20191218_160650_vHDR_On.jpegP_20191218_160705_vHDR_On.jpegP_20191218_160733_003.jpeg 
  393   Mon Sep 28 16:03:13 2020 ranaGeneralGeneralOMC Beam Dump Production Cure Bake
are there any measurements of the BRDF
of these things? I'm curious how much
light is backscattered into the incoming
  
  394   Mon Sep 28 16:13:08 2020 KojiGeneralGeneralOMC Beam Dump Production Cure BakeAccording to the past backscatter test
of the OMC (and the black glass beamdump:
not V type but triangular type on a hexagonal-mount),
  
  110   Sat Apr 13 21:06:02 2013 KojiOpticsGeneralOMC Bottom-side: cavity glued[Jeff, Zach, Lisa, Koji]
Gluing of the cavity mirrors went
 Cav_scan_response_130412_Pitch.pdfCav_scan_response_130412_Yaw.pdf 
  155   Thu Aug 22 15:34:03 2013 KojiOpticsGeneralOMC Cavity side gluing[Koji Jeff]
o BS1, FM1, FM2 prisms were glued
=> This fixed the unstability of
  
  235   Thu Aug 20 01:35:01 2015 KojiElectronicsGeneralOMC DCPD in-vacuum electronics chain testWe wanted to know the  transimpedance
of the OMC DCPD at high frequency (1M~10M).
For this purpose, the OMC DCPD chain
 OMC_DCPD_Chain.pdfOMC_DCPD_Transimpedance.pdf 
  236   Wed Aug 26 11:31:33 2015 KojiElectronicsGeneralOMC DCPD in-vacuum electronics chain testThe noise levels of the output pins (pin1/pin6)
are measured. Note that the measurement is
done with SE. i.e. There was no common mode
 OMC_DCPD_OutputNoise.pdf 
  414   Fri Jul 15 22:14:14 2022 KojiGeneralGeneralOMC Lab recovery for the OMC #002 test- The lab is chilly (18degC)

- Cleaned the lab and the optical
table a bit so that the delicate work can
 PXL_20220716_035922673.jpgPXL_20220716_025319391.MP.jpgPXL_20220716_025334324.jpgPXL_20220716_035309066.jpgPXL_20220716_035411435.NIGHT.jpg 
  43   Thu Nov 29 21:18:23 2012 KojiOpticsGeneralOMC Mounting Prisms have come   PB293030.JPGPB293032.JPG 
  382   Tue Oct 22 10:25:01 2019 StephenGeneralGeneralOMC PZT Assy #9 and #10 Production Cure Bake OMC PZT Assy Production Cure Bake (ref.
OMC
elog 381) for PZT Assy #9 and #10 started
 OMC_ABO_PZT_Curing_Bake_effort_201906_thru_201909.xlsproduction_cure_bake_pzt_assys_9_and_10_20190927.png 
  1   Fri Jun 15 15:45:49 2012 KojiGeneralGeneralOMC PlanLIGO Document G1200683-v1:

aLIGO OMC fabrication and testing
  
  108   Thu Apr 11 15:10:22 2013 KojiGeneralGeneralOMC Progress[Zach, Jeff, Koji]

- Jeff configured the bottom
side template to have a nominal value
  
  277   Tue May 16 19:05:18 2017 KojiOpticsConfigurationOMC SN002 fix - temporary opticsWorking on the SN002 OMC fix. Checked the
inventory. I think I am using C8 mirror as
the new temporary CM1 and PZT24 as the new
  
  70   Thu Mar 14 17:06:21 2013 KojiMechanicsGeneralOMC SUS work @LLOEDIT (ZK): All photos on
Picasa. Also, I discovered that
 2013-03-14_16.03.40.jpg2013-03-14_16.04.07.jpg 
  25   Tue Oct 9 05:03:15 2012 KojiElectronicsGeneralOMC Test Electronics Setup   electronics_setup.pngelectronics_setup.pdf 
  24   Tue Oct 9 04:59:24 2012 KojiOpticsGeneralOMC Test Optical Setup   OMC_test_setup.pngOMC_test_setup.pdf 
  81   Mon Mar 25 19:31:16 2013 KojiOpticsGeneralOMC Top-side gluing[Koji Jeff Zach]  
AAA
 P3253353.jpgP3253372.jpgP3253394.jpgP3253400.jpg 
  69   Thu Mar 7 15:53:47 2013 KojiMechanicsGeneralOMC Transportation fixture, OMC PD/QPD mounts   P3073218.JPGP3073219.JPGP3073223.JPGP3073225.JPGP3073227.JPG 
ELOG V3.1.3-