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New entries since:Wed Dec 31 16:00:00 1969
ID Date Author Typeup Category Subject Text Attachments
  386   Fri Dec 6 00:55:25 2019 KojiOpticsGeneralBeamdump gluing[Stephen, Koji]

20 glass beamdumps were
bonded at the 40m cleanroom.
 6x 
  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 
  452   Mon Nov 7 22:00:33 2022 KojiOpticsConfigurationSetting up the fiber couplersFiber matching: 43.2/56.7 = 76%
S/P-pol ratio 0.7/43.2 = 1.6%

 
  
  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 
  455   Mon Nov 14 09:27:13 2022 KojiOpticsCharacterizationtransmission measurements through OMC #1 (before cleaning)The measured total optical loss of the
OMC was

1st:   0.015 +/- 0.003
 OMC_Powerbudget.xlsx 
  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:
  
  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 
  459   Thu Nov 17 18:56:22 2022 KojiOpticsGeneral Transmission measurements of OMC #1 after deep cleaning[Camille, Koji]

- Removed the first contact we
left on Monday.
 PXL_20221117_232145418.jpgScreen_Shot_2022-11-17_at_19.02.31.png 
  460   Thu Nov 17 19:50:00 2022 KojiOpticsCharacterizationConclusion on the cleaning of OMC #001Conclusion on the cleaning of OMC
#001

- After a couple of first contact
 OMC_loss.pdf 
  464   Fri Dec 2 11:42:03 2022 KojiOpticsCharacterizationOMC #1 cleaning for water soluble contaminants[Camille, Koji] Log of the work
on Nov 30, 2022

 


The
following is the notes from GariLynn




 PXL_20221130_234101575.jpgPXL_20221130_234013958.jpgPXL_20221201_021727724.jpgScreen_Shot_2022-12-02_at_12.43.02.png 
  465   Fri Dec 2 12:38:15 2022 KojiOpticsCharacterizationOMC #1 cleaning for water soluble contaminantsAnother set of FC cleaning was applied
to FM1/FM2/CM1/CM2 and SM2. Some FC strings
are visible on SM2. So I decided to clean
 PXL_20221202_034932211.jpgOMC_loss.pdf 
  466   Fri Dec 2 23:58:33 2022 KojiOpticsCharacterizationOMC #1 cleaning for water soluble contaminantsThe second trial of the water scrub

A bright scatter is visible on
FM1, so I tried water scrub on FM1. This
 PXL_20221203_063327268.jpgOMC_loss.pdf 
  467   Mon Dec 5 20:09:39 2022 KojiOpticsGeneral(re)starting the OMC #4 build[Camille Koji]

We started buikding the
OMC #4. 
 PXL_20221205_233712211.jpg 
  468   Fri Dec 9 13:13:13 2022 KojiOpticsCharacterizationFSR/TMS/Spot Positions/Transmission[Camille Koji]

We quickly measured the basic parameters
of the OMC as is.
 HOM_plot_PZT.pdfOMC4_spot.pngPXL_20221208_233706115.jpg 
  469   Mon Dec 12 19:04:40 2022 KojiOpticsCharacterizationFSR/TMS/Spot Positions/Transmission 2nd trial[Camille Koji]

We replaced CM2 with a PZT mirror
subassembly serialized by PZT "13"
 PXL_20221212_235351320.jpgOMC4_spot.pngHOM_plot_PZT.pdfPXL_20221213_000406843.jpgScreen_Shot_2022-12-12_at_19.36.10.png 
  470   Mon Dec 19 18:51:50 2022 KojiOpticsCharacterizationTMS measurement with the PZT voltages altered[Camille, Koji] Log of
the work on Dec 15, 2023

The vertical and horizontal
 Cav_scan_response_PZT1_0_Pitch.pdfCav_scan_response_PZT1_0_Yaw.pdfOMC_20221215.pdfHOM_plot_PZT0_0.pdfHOM_PZTV_PZT1_0V.pdf 
  471   Thu Jan 19 23:45:44 2023 KojiOpticsGeneralOMC #4: cavity mirror bonding[Koji, Camille]

We worked on the bonding of the
flat mirrors for the OMC cavity with UV epoxy.
  
  472   Mon Jan 23 19:51:20 2023 KojiOpticsGeneralOMC #4: cavity mirror bonding[Camille, Koji]

We continued to bond two CM mirrors
and the other two steering mirrors for QPD2.
 HOM_plot_PZT0_0.pdfPXL_20230124_032358482.MP.jpgPXL_20230124_032452805.MP.jpgPXL_20230124_032425638.jpg 
  474   Thu Jan 26 22:57:19 2023 KojiOpticsGeneralOMC #4: One Invar block bonded with tilt[Camille, Koji]

The bottom side template was separated
into two pieces and successfully removed
 PXL_20230126_221425695.jpgPXL_20230126_221522416.jpg 
  475   Thu Jan 26 23:07:14 2023 KojiOpticsGeneralOMC #4: Input beam dump bonding[Camille, Koji]

During the second UV epoxy session,
we did not bond the input beam dump. This
 PXL_20230126_221556977.jpg 
  476   Thu Jan 26 23:16:35 2023 KojiOpticsConfigurationOMC #4: Top side bonding.[Camille, Koji]
 PXL_20230126_235309334.jpgPXL_20230127_053008237.jpgPXL_20230127_053020709_2.jpgPXL_20230127_053042809.MP_2.jpgPXL_20230127_053058275_2.jpg 
  477   Thu Jan 26 23:46:13 2023 KojiOpticsGeneralOMC #1 input beam dump bondingA beam dump was stacked on the base of
the previous beam dump. The angle was determined
so that the main transmission goes through
 PXL_20230127_052955482.jpgPXL_20230127_052949869.jpg 
  483   Thu Feb 2 03:09:41 2023 KojiOpticsGeneralOMC #4: One Invar block bonded with tilt[Camille, Thejas, Koji]

We added a reinforcement bar at
the back of the invar block which had the
 PXL_20230202_003156761.jpgPXL_20230202_003204058.jpg 
  484   Sat Feb 4 03:16:10 2023 KojiOpticsGeneralOMC #4: One Invar block bonded with tiltThe attached photo shows the resulting
bond spread.

 
 PXL_20230202_213114009.jpg 
  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 
  453   Fri Nov 11 19:07:48 2022 KojiSupplyGeneralSupply OrderClean Supply Ordered


TexWipe TX8410 AlphaSat
Vectra Alpha 10 50 sheets x 12 pk  (VWR
  
ELOG V3.1.3-