40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop

OMC elog, Page 5 of 9  Not logged in

List |  Find |  Login |  Help

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  410 Entries

Goto page Previous  1, 2, 3, 4, 5, 6, 7, 8, 9   Next

ID Date Author Type Category Subject Text   409   Sun May 30 15:17:16 2021 Koji General General DCPD AF capacitance measirement Attachment 1: System diagram. The reverse bias voltage is controlled by DS335. This can produce a voltage offset      410   Sun May 30 15:32:56 2021 Koji General General DCPD AF capacitance measirement Measurement result: The capacitance at no bias was 460~500pF. This goes down to below 300pF      52   Sun Jan 6 23:22:21 2013 Koji Mechanics General SolidWorks model of the OMC suspension        58   Tue Jan 22 17:56:32 2013 Koji Mechanics General Rotary stage selection Newport UTR80     Sensitivity: 4 arcsec      69   Thu Mar 7 15:53:47 2013 Koji Mechanics General OMC Transportation fixture, OMC PD/QPD mounts        70   Thu Mar 14 17:06:21 2013 Koji Mechanics General OMC SUS work @LLO EDIT (ZK): All photos on Picasa. Also, I discovered that      90   Mon Apr 1 10:28:03 2013 Koji Mechanics General Additional UV blast for the top surface [Koji, Lisa, Jeff, Zach] Jeffs concern after talking with the      92   Wed Apr 3 17:39:38 2013 Koji Mechanics Characterization Calibration of the test PZTs before the glue test We want to make sure the responses of the PZT actuator does not change after the EP30-2 gluing.      98   Fri Apr 5 14:39:26 2013 Koji Mechanics Characterization Calibration of the test PZTs after the heat cure We attached fused silica windows on the test PZTs. http://nodus.ligo.caltech.edu:8080/OMC_Lab/93 The glued assemblies were brought      102   Mon Apr 8 11:49:18 2013 Koji Mechanics Characterization PZT actuator tested at LLO Test result of the PZTs by Valera and Ryan PZT  Length Angle  #   [nm/V] [urad/um]  11  14.5   17.6      124   Mon May 13 14:49:35 2013 Koji Mechanics Characterization Mounting Glass Bracket still broke with tightenin stress [Koji / Jeff] This is the elog about the work on May 9th.      125   Mon May 13 14:59:16 2013 Koji Mechanics General Invar shim gluing The invar reinforcement shims were glued on the glass brackets on the breadboard.      130   Thu May 23 23:41:48 2013 Koji Mechanics General DCPD/QPD Mount DCPD mounts and QPD mounts were attached on the breadboard. They are not aligned yet and loosely fastened.      148   Sat Jul 6 17:10:07 2013 Koji Mechanics Characterization PZT Response analysis Analysis of the PZT scan / TF data taken on May 31st and Jun 1st. [DC scan]      158   Tue Aug 27 17:02:31 2013 Koji Mechanics Characterization Spot position measurement on the diode mounts After the PZT test, the curved mirrors were aligned to the cavity again. In order to check the height of the      160   Thu Aug 29 18:55:36 2013 Koji Mechanics General I1 OMC top side gluing (UV) The glass components for the I1 OMC top side were glued by the UV glue. Breadboard SN#4      202   Tue Jul 8 18:54:54 2014 Koji Mechanics Characterization PZT characterization Each PZT was swept with 0-150V 11Hz triangular wave. Time series data for 0.2sec was recorded      210   Thu Jul 17 02:19:20 2014 Koji Mechanics Characterization I1OMC vibration test Summary - The breadboard has a resonance at 1.2kHz. The resonant freq may be chagned  6x    211   Sun Jul 20 17:19:50 2014 Koji Mechanics Characterization I1OMC vibration test ~ 2nd round Improved vibration measurement of the OMC Improvement  9x    213   Mon Jul 21 01:02:43 2014 Koji Mechanics Characterization Some structual mode analysis Prisms Fundamental: 12.3kHz Secondary: 16.9kHz  6x    218   Tue Sep 9 20:59:19 2014 Koji Mechanics Characterization Structural mode analysis for the PZT mirror Structural analysis of the PZT mirror with COMSOL. Inline figures: Eigenmodes  6x    296   Wed May 30 16:40:38 2018 Koji Mechanics Characterization EOM mount stability test https://awiki.ligo-wa.caltech.edu/wiki/EOM_Mount_Stability      314   Fri Feb 1 12:52:12 2019 Koji Mechanics General PZT deformation simulation A simple COMSOL simulation was run to see how the PZT deforms as the voltage applied. Use the geometry of the ring PZT      320   Thu Mar 28 16:36:52 2019 Koji Mechanics Characterization OMC(002) PZT characterization As performed in the ELOG 202, the PZTs of the OMC 002 were tested.      328   Thu Apr 11 12:15:31 2019 Koji Mechanics Configuration PZT sub assy mirror orientations        329   Thu Apr 11 21:22:26 2019 Koji Mechanics General OMC(004): PZT sub-assembly gluing [Koji Stephen] The four PZT sub-assemblies were glued in the gluing fixtures. There were      358   Thu May 9 16:07:18 2019 Stephen Mechanics General Improvements to OMC Bonding Fixture [Stephen, Koji] As mentioned in eLOG 331, either increased thermal cycling      400   Mon Nov 9 22:06:18 2020 Koji Mechanics General 5th OMC Transport Fixture I helped to complete the 5th OMC Transport Fixture. It was built at the 40m clean room and brought to the OMC lab. The fixture hardware      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

Goto page Previous  1, 2, 3, 4, 5, 6, 7, 8, 9   Next

ELOG V3.1.3-