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Full | Summary | Threaded     -- All entries -- Last day Last 3 Days Last week Last month Last 3 Months Last 6 Months Last Year -- Type -- General Facility Clean Supply Mechanics Optics Electronics  544 Entries

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ID Date Author Type Category Subject Text   18   Tue Aug 14 03:29:06 2012 Koji Supply General Clean supply rack Clean supplies & some cleaning tools are located at the right side of the entrance. The file cabinet there was moved to      123   Fri May 10 09:33:22 2013 Koji Supply General COMSOL simulation on the glass bracket stress        274   Thu Jan 19 20:57:53 2017 Koji Supply General Purchase Ordered: Office Depot v AA battery Qty. 24      275   Thu Feb 16 17:23:12 2017 Koji Supply General Purchase BNC Patch Panel 8x Amphenol Connex 112443 / Isolated BNC FEMALE TO FEMALE BULKHEAD ISOLATED ADAPTER - 50      321   Thu Apr 4 20:07:39 2019 Koji Supply General Purchase == Office Depot == Really Useful Box 9L x 6 (delivered)      375   Wed Sep 18 22:30:11 2019 Stephen Supply General EP30-2 Location and Status Here is a summary of the events of the last week, as they relate to EP30-2. 1) I lost the EP30-2 syringes that      376   Wed Sep 18 23:16:06 2019 Stephen Supply General Items staged at 40m Bake Lab for PZT Subassembly Bonding The following items are presently staged at the 40m Bake Lab (see photo indicating current location) (noting items broght by      384   Tue Oct 22 11:56:09 2019 Stephen Supply General Epoxy Status update as of 22 October 2019 The following is the current status of the epoxies used in assembly of the OMC (excerpt from C1900052)      407   Fri Feb 5 07:40:37 2021 Stephen Supply General OMC Unit 4 Build Machined Parts OMC Unit 4 Build Machined Parts are currently located in Stephen's office. See image of large blue box from office, below.      411   Wed Jul 7 14:21:50 2021 Stephen Supply General OMC Unit 4 Build Machined Parts More explicit insights into the inventory for the Unit 4 build. Image of inventory included below.      453   Fri Nov 11 19:07:48 2022 Koji Supply General Supply Order Clean Supply Ordered TexWipe TX8410 AlphaSat Vectra Alpha 10 50 sheets x 12 pk  (VWR      4   Wed Jun 20 20:37:45 2012 Zach Optics Configuration Topology / parameter selection EDIT (ZK): All the plots here were generated  8x    5   Thu Jun 21 03:07:27 2012 Zach Optics Configuration Parameter selection / mode definition EDIT 2 (ZK): As with the       6   Fri Jun 29 11:26:04 2012 Zach Optics Characterization RoC measurement setup Here is the proposed RoC measurement setup. Koji tells me that this is referred to as "Anderson's method".      8   Wed Jul 18 23:20:13 2012 Koji Optics Characterization Mode scan results of ELIGO Nic 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 Zach Optics Characterization RoC measurement setup Here is a more detailed version of the setup, so that we can gather the parts we will need.      22   Fri Oct 5 03:39:58 2012 Koji Optics General RoC Test setup Based on Zach's experiment design, I wrote up a bit more detailed optical layout for the mirror test.      23   Mon Oct 8 11:30:47 2012 Koji Optics General EG&G 2mm photodiode angle response EGE&G 2mm photodiode angle response measured by Sam T1100564-v1      24   Tue Oct 9 04:59:24 2012 Koji Optics General OMC Test Optical Setup        26   Fri Oct 12 17:15:19 2012 Koji Optics General Loan from the 40m / ATF     HWP set                     30   Wed Oct 17 20:36:04 2012 Koji Optics General RoC test cavity locked The RoC test setup has been built on the optical table at ATF.      31   Thu Oct 18 20:23:33 2012 Koji Optics Characterization Improved measurement Significant improvement has been achieved in the RoC      32   Wed Nov 7 01:28:20 2012 Koji Optics Characterization Wedge angle test (A1) Wedge angle test Result: Wedge angle of Prism A1:      35   Thu Nov 8 13:24:53 2012 Koji Optics Characterization More wedge measurement A1 Horiz Wedge    0.497    +/-    0.004 deg      37   Thu Nov 8 19:52:57 2012 Koji Optics General How to apply UV epoxy KA's question: Do      38   Thu Nov 8 20:12:10 2012 Koji Optics Configuration How many glass components we need for a plate Optical prisms 50pcs (A14+B12+C6+E18) Curved Mirrors 25pcs (C13+D12)      39   Fri Nov 9 00:43:32 2012 Koji Optics Characterization Further more wedge measurement Now it's enough for the first OMC (or even second one too). Today's measurements all distributed      40   Sat Nov 17 02:31:34 2012 Koji Optics Characterization Mirror T test Mirror T test The mirror was misaligned to have ~2deg incident (mistakenly...) angle.      41   Mon Nov 19 13:33:14 2012 Koji Optics Characterization Resuming testing mirror RoCs In order to resume testing the curvatures of the mirrors, the same mirror as the previous one was tested.      42   Mon Nov 26 01:40:00 2012 Koji Optics Characterization More RoC measurement C1: RoC: 2.57845 +/− 4.2e−05m      43   Thu Nov 29 21:18:23 2012 Koji Optics General OMC Mounting Prisms have come        44   Tue Dec 18 20:04:40 2012 Koji Optics Characterization Prism Thickness Measurement The thicknesses of the prism mirrors (A1-A5) were measured with micrometer thickness gauge. Since the thickness of the thinner      48   Mon Dec 31 03:10:09 2012 Koji Optics General SolidWorks model of the OMC breadboard        49   Mon Dec 31 03:11:45 2012 Koji Optics Characterization Further more RoC measurement Total (excluding C2, C7, C8): 2.575 +/- 0.005 [m] New results      50   Wed Jan 2 07:35:55 2013 Koji Optics Characterization Thickness of a curved mirror Measured the thickness of a curved mirror: Took three points separated by 120 degree.      51   Wed Jan 2 07:45:39 2013 Koji Optics Characterization First Contact test Conclusion: Good. First contact did not damage the coating surface, and reduced the loss      53   Thu Jan 10 18:37:50 2013 Koji Optics Characterization Wedging of the PZTs Yesterday I measured the thickness of the PZTs in order to get an idea how much the PZTs are wedged.      54   Wed Jan 16 14:10:50 2013 Koji Optics Characterization Autocollimator tests of optics perpendicularity/parallelism The items: - Autocollimator (AC) borrowed from      55   Fri Jan 18 13:25:17 2013 Koji Optics Configuration Autocollimator calibration An autocollimator (AC) should show (0,0) if a retroreflector is placed in front of the AC.      56   Sat Jan 19 20:47:41 2013 Koji Optics Characterization Wedge measurement with the autocollimator The wedge angle of the prism "A1" was measured with the autocollimator (AC). The range of the AC is 40 arcmin.      59   Mon Feb 4 00:39:08 2013 Koji Optics Characterization Wedge measurement with the autocollimator and the rotation stage Method:     Mount the tombstone prism on the prism mount. The mount is fixed on      60   Wed Feb 6 02:34:10 2013 Koji Optics Characterization Wedge measurement with the autocollimator and the rotation stage Measurement:     A6:   α = 0.665 deg, β = +3.0 arcmin (1.5 div      62   Thu Feb 7 23:01:45 2013 Koji Optics Characterization UV 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 Koji Optics Configuration Perpendicularity test Perpendicularity test of the mounting prisms: The perpendicularity of the prism      64   Wed Feb 27 18:18:48 2013 Koji Optics Configuration More perpendicularity test Mounting Prisms: (criteria: 30arcsec = 145urad => 0.36mm spot shift)      65   Fri Mar 1 23:06:15 2013 Koji Optics Configuration More perpendicularity test final Perpendicularity of the "E" mirror was measured. Mounting Prisms:      66   Fri Mar 1 23:52:18 2013 Koji Optics Characterization Wedge measurement with the autocollimator and the rotation stage Measurement:     E1:   α =  0.672 deg, β = +0.0  arcmin (0 div up)      67   Tue Mar 5 19:37:00 2013 Zach Optics Characterization eLIGO OMC visibility vs. power measurement details EDIT (ZK): Koji points out that (1 - Ti) should really be the non-resonant reflectivity of the aligned cavity, which is much closer      68   Wed Mar 6 23:24:58 2013 Zach Optics Characterization eLIGO OMC visibility vs. power measurement details I found that, in fact, I had lowered the modulation depth since when I measured it to be 0.45 rads --> Psb = 0.1.      74   Wed Mar 20 09:38:02 2013 Zach Optics Characterization [LLO] OMC test bench modified  For various reasons, I had to switch NPROs (from the LightWave 126 to the Innolight Prometheus).

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