Suggestions from last year from the TAC:

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

[[attachment:Jan10-Slides.pdf]]

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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I. '''Agenda'''

 A. Current Status / Recent Work  
 B. Upgrade Plans  

II. '''Recent Status'''

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

III. '''Upgrade'''

 A. Purpose of the upgrade
  1. AdvLIGO LSC / AdVLIGO testbed (green/CDS)
  1. Advanced techniques

 A. 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.

  1. 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

  1. 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

  1. 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)

  1. Green beam injection (unstabilized fiber + green injection from the ends)

 A. Upgrade Plans
  1. upgrading order and rough schedule

IV. End

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[[attachment:CDS-diagram.pdf]] [[attachment: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) [[http://lhocds.ligo-wa.caltech.edu:8000/40m/Upgrade_09?action=AttachFile&do=get&target=100106_upgrade09.pdf|100106_upgrade09.pdf]]