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, Kentaro Somiya(PRDC 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

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

• LIGO 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

Meetings

• 2019/01/08

White paper plan

• Scientific motivation
  • Stellar-mass BBH
    • formation scenarios [Kohei Inayoshi]
    • population (parameter estimation) [Chunglee Kim]
    • host galaxy identification (sky localization) [Chunglee Kim]
  • Intermediate-mass BBH
    • formation scenarios [Kohei Inayoshi]
    • polulation (parameter estimation) [Chunglee Kim]
    • intermediate mass-ratio binaries [Norichika Sago]
  • BNS and BHNS
    • binary evolution [Chunglee Kim]
    • population (parameter estimation) [Chunglee Kim]
    • NS EOS and tidal deformation [Masaru Shibata]
    • NS remnant [Masaru Shibata]
    • kilonova [Masaru Shibata]
    • short gamma-ray burst [Kunihito Ioka]
  • Accereting binaries
    • low-mass x-ray binaries [Albert Kong]
  • Isolated NS
    • pulsar ellipticity (continuous) [Yousuke Itoh]
    • pulsar glitches and magnetar flare [Yasufumi Kojima]
    • stellar oscillation [Hajime Sotani]
  • Supernova
    • explosion models [Kei Kotake]
    • distinguishing explosion models (parameter estimation) [Kazuhiro Hayama]
    • polarization [Kazuhiro Hayama]
  • Cosmic string
    • burst signal [Kipp Cannon]
    • stochastic background [Kipp Cannon]
    • parameter estimation [Kipp Cannon]
  • Stochastic background
    • inflation models [Sachiko Kuroyanagi]
    • phase transition [Mitsuru Kakizaki?]
    • astrophysical background [??]
    • spectral shape (parameter estimation) [Sachiko Kuroyanagi]
  • Test of gravity
    • test of consistency with GR [Tjonnie G. F. Li]
    • generation mechanism [Takahiro Tanaka]
    • propagation effect [Atsushi Nishizawa]
    • polarization [Hiroki Takeda]
    • BH no-hair theorem [Hiroyuki Nakano]
  • Cosmology
    • Hubble constant measurement [Atsushi Nishizawa]
  • Multimessenger
    • fast radio burst [Kazumi Kashiyama]
    • long gamma-ray burst [Ryo Yamazaki]
  • Others
    • BH echo [Takahiro Tanaka]
• 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, Eleonora]
  • Filter cavity (losses) [Matteo, Eleonora]
  • 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?]
  • QND, quantum locking [KNagano]
  • Silicon mass
  • 1550nm/2000nm laser
  • Suspension point interferometer
  • Vertical suspension point interferometer
  • Thermal compensation system (BS/PRMs)
  • Balanced homodyne detector
  • Low-loss output faraday isolator
  • Suspension thermal noise cancellation using single loop wires
  • Khalili cavity
  • EPR entanglement
  • Phase camera
  • Double optical spring
  • Multi-carrier interferometer
  • Delay line
  • Local readout scheme
  • Intracavity squeezing
  • Intracavity signal amplifier
  • White light cavity
  • Speedmeter
  • Long SRC
  • Xylophone
  • 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
• Study of new noise sources
  • Schumann resonance
  • Water gravity gradient noise
  • Acoustic gravity gradient noise
  • Thermal noise in non-equilibrium steady state
• Status of the current facility
  • TUN
  • FCL
  • VAC
  • CRY [Tomaru]
  • VIS [Takahashi, Aso]
  • MIR [Hirose]
  • LAS [Mio]
  • IOO [Kokeyama, Somiya]
  • AOS [Akutsu]
  • ...
• Limits of the current facility
  • Mirror size in cryostat [KYamamoto?]
  • Filter cavity length [Matteo, Eleonora]
  • 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

References

• LCGT Observation Band study

• Latest estimated sensitivity of KAGRA (v201708) *APPROVED*

• Document Tree for KAGRA Upgrade

• Example sensitivity curves for the KAGRA upgrade

• Particle swarm optimization of the sensitivity of a cryogenic gravitational wave detector

• gwinc