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January 28th, 2010 [[BR]] 9:30 AM Pacific time [[BR]] Call in instructions:[[BR]] (866) 380 - 5536[[BR]] International: (816) 249 - 4731[[BR]] Code: 6263958709[[BR]] January 28th, 2010 <<BR>> 9:30 AM Pacific time <<BR>> Call in instructions:<<BR>> (866) 380 - 5536<<BR>> International: (816) 249 - 4731<<BR>> Code: 6263958709<<BR>>
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attachment:CDS-diagram.pdf attachment:CDS-diagram.graffle [[attachment:CDS-diagram.pdf]] [[attachment:CDS-diagram.graffle]]
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10/Jan upgrade status (weekly meeting material) [http://lhocds.ligo-wa.caltech.edu:8000/40m/Upgrade_09?action=AttachFile&do=get&target=100106_upgrade09.pdf 100106_upgrade09.pdf] 10/Jan upgrade status (weekly meeting material) [[http://lhocds.ligo-wa.caltech.edu:8000/40m/Upgrade_09?action=AttachFile&do=get&target=100106_upgrade09.pdf|100106_upgrade09.pdf]]

Suggestions from last year from the TAC:

  • Mode scans
  • think about MCL acq. in light of the green locking

Jan10-Slides.pdf

January 28th, 2010
9:30 AM Pacific time
Call in instructions:
(866) 380 - 5536
International: (816) 249 - 4731
Code: 6263958709

I. Agenda

  1. Current Status / Recent Work B. Upgrade Plans

II. Recent Status

  1. Personnel Changes
    1. Yoichi Aso: 6/08 - 5/09 (gone to U. Tokyo)
    2. Koji Arai: 7/09 - 7/2051
    3. Kiwamu Izumi: 10/2009 - 10/2011
    4. Rob Ward: 1/2004 - 3/2010 (gone to Paris - APC / Barsuglia)
  2. DRFPMI results

III. Upgrade

  1. Purpose of the upgrade
    1. AdvLIGO LSC / AdVLIGO testbed (green/CDS)
    2. Advanced techniques
  2. Current status of the upgrade preparation
    1. Optics
      • Done: Have the SRM / ITMs (dichroic). PRMs polished - coating waits for arm loss measurement
      • Done: optical layout
        • Decision made to use 11/55 MHz instead of 9/45 MHz: easier layout
        • MMT design (Jenne): histograms, alignment orthogonality

        • Optics - Gooch & Housego magic HR

      • In progress: ETMs are designed - quote is in process
      • To be done: ordering smaller optics: folding mirrors, aux. locking, etc.
    2. Mechanics -
      • Done: SOSs for new, light test masses
      • Done: TT suspensions for PRC/SRC
        • ANU tip/tilt: LLO Blades + TAMA/ANU compliant eddy current damping
      • To be done: Supplimental parts for TTs, some in-vac mechanics
    3. Electronics (RF system)
      • Done: Designed the multiple frequency RF system to preserve the phase noise performance of the oscillator
        • RF signal distribution (oscillators, splitters, amplifiers, etc.)
        • Triple-Resonant EOM (New Focus KTP + resonant circuit)
      • Done: Placed the order. Received most of the delivery.
      • To be done: Actual modifications of the PDs/Modules
    4. CDS -
      • Done: Demonstrated the control system of one suspension including the cavity lock.
        • Layout diagram
        • All ADCs, DACs, BOs, IO Chassis, computers, fibers, in house.
        • Adapter boards still being packaged
      • To be done: Integration of the system
        • Integration of cards-chassis-backplanes-cpus ongoing and tricky.
        • Coding for the inter process functions (i.e. LSC, ASC, etc)
    5. Green beam injection (unstabilized fiber + green injection from the ends)
  3. Upgrade Plans
    1. upgrading order and rough schedule

IV. End

CDS-diagram.pdf CDS-diagram.graffle

09/Oct ALIGO ISC meeting material https://nodus.ligo.caltech.edu:30889/svn/trunk/docs/upgrade08/Plan/

10/Jan upgrade status (weekly meeting material) 100106_upgrade09.pdf

TAC_Meeting-Jan_10 (last edited 2012-01-03 23:02:43 by localhost)