Future Planning Committee (FPC) working wiki

Overview

• FPC is approved under KSC in Dec/2018 with the following initial members:

  • Sadakazu Haino(Chair), Chunglee Kim, Kentaro Komori, Yuta Michimura, Matteo Leonardi, Atsushi Nishizawa, RDC chair
• Any comments/questions/requests from anyone are much appreciated and can be sent to the dedicated Mailing List
  • ksc-fpc _at_ icrr.u-tokyo.ac.jp

Starting points

• Satellite Meeting on Future Upgrade of KAGRA

• FPC proposal by Y. Aso

• Summary of Past Discussions on KAGRA Upgrade (>_<)

• Observation scenario including LIGO/Virgo O5 upgrades

LIGO-Virgo white papers

• Instrument science white paper (2017): LIGO-T1700231–v2

• Instrument science white paper (2018): LIGO-T1800133–v3

• The LSC-Virgo White Paper on Gravitational Wave Data Analysis and Astrophysics (July 2017 edition): LIGO–T1700214-v4 VIR-0435D-17

• The LSC-Virgo White Paper on Gravitational Wave Data Analysis and Astrophysics (Summer 2018 edition): LIGO–T1800058-v2 VIR-0119B-18

Draft of white paper

• Link to Overleaf: https://www.overleaf.com/project/5c091fbd8795b4614778100c

• Link to Dropbox (backup): https://www.dropbox.com/sh/ry8x2x5wco4xbxx/AAAy782OD9Mhbca7Cov0Ws5Oa?dl=0

White paper plan

• Scientific motivation
  • Stellar-mass BBH
    • formation scenarios
    • population (parameter estimation)
    • stocastic background
    • host galaxy identification
  • Intermediate-mass BBH
    • formation scenarios
    • polulation (parameter estimation)
  • BNS and BHNS
    • binary evolution
    • population (parameter estimation)
    • NS EOS and tidal deformation
    • short gamma-ray burst
    • kilonova
    • stocastic background
  • Accereting binaries
    • low-mass x-ray binaries
  • Isolated NS
    • NS remnant
    • magnetar flare
    • stellar oscillation
  • Supernova
    • explosion models
    • polarization
  • Cosmic string
    • bursts from kinks and cusps
    • stochastic background
  • Pulsar
    • pulsar ellipticity (continuous)
    • pulsar glitches (burst)
  • Cosmological stochastic background
    • inflation
    • phase transition
  • Test of gravity
    • generation in strong field
    • propagation
    • polarization
    • BH no-hair theorem (ringdown)
  • Cosmology
    • Hubble constant measurement
  • Others
    • BH echo
    • fast radio burst
• Survey of the current technologies (price and readiness)
  • High power laser (how much power? stability?) [Haino?]
  • Parametric instabilty vs power, mitigation schemes [Michimura? KYamamoto?]
  • Squeezing (squeezing level, losses) [Matteo?]
  • Filter cavity (losses) [Matteo?]
  • Mirror (mass, coating, absorption) [Hirose?]
  • Suspending larger mirror [Okutomi?]
  • Suspension design for suspension thermal noise reduction (upper stage masses, sapphire blades, ribbon design) [Tomaru?]
  • Improving heat conductivity of sapphire fibers [Tomaru?]
  • Extreme RSE (high SRM reflectivity possible?) [Michimura?]
  • Technological noises at low frequencies [Michimura?]
  • Newtonian noise cancellation [Nishizawa?]
  • Technologies to accerelate commissioning work (e.g. machine learning for auto alignment)
  • Technologies to improve stability
  • Technologies to improve duty cycle
  • Technologies to reduce calibration error
• Limits of the current facility
  • Mirror size in cryostat [KYamamoto?]
  • Filter cavity length [Matteo?]
  • Computing resources [Chunglee?]
• 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