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   * Sapphire heat extraction    * Improving heat conductivity of sapphire fibers

Future Planning Committee (FPC) working wiki

Starting points

White paper

  • Scientific motivation
  • Survey of the current technologies (price and readiness)
    • High power laser (how much power? stability?)
    • Parametric instabilty vs power, mitigation schemes
    • Squeezing (squeezing level, losses)
    • Filter cavity (losses)
    • Mirror (mass, coating, absorption)
    • Suspending larger mirror
    • Suspension design for suspension thermal noise reduction (upper stage masses, sapphire blades, ribbon design)
    • Improving heat conductivity of sapphire fibers
    • Extreme RSE (high SRM reflectivity possible?)
    • Newtonian noise cancellation
  • Limits of the current facility
    • Mirror size
    • Filter cavity length
  • Trade-off studies
  • Time scale of plans: near-term(more realistic) and longer-term(some dreams)
  • Back up plans
  • R&Ds to be done : input to the PRDC

  • Budget estimate
  • Project execution plan

Schedule for the white paper

  • Work in progress draft to be presented @ KIW in Feb 2019 : Feedbacks from Virgo
  • First draft to be circulated @ April 2019 F2F
  • Final version to be put for approval @ Aug 2019 F2F

KAGRA/KSC/FPC (last edited 2019-08-26 22:52:25 by SadakazuHaino)