== Future Planning Committee (FPC) working wiki == <> === Overview === * FPC is approved under [[KAGRA/KSC/FSC|KSC/FSC]] in Dec/2018 with the following initial members: * Sadakazu Haino(Chair), Chunglee Kim, Kentaro Komori, Matteo Leonardi, Yuta Michimura, 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 === White paper update plan === * Volunteer members (anyone else are also welcome): * Ray-Kuang Lee, Matteo Leonardi, Quynh Lan Nguyen, Kentaro Somiya, Kazuhiro Yamamoto, S. Haino, M. Ando(as FSC) * Update candidates: * K. Yamamoto: 5.3.3 Parametric instability, 5.4.5 loss angle measurement, 5.6 CRY, 6.3.1 Mirror (coating),　6.3.2 Suspending larger mirror * K. Somiya: update of sensitive calculations (?) * [[KAGRA/KSC/FPC#White_paper_plan|Original white paper plan]] <> === Draft of white paper === * Link to [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=9590|JGWdoc]] * Link to [[https://www.overleaf.com/project/5d60ec727173d22f59a1d21f|Overleaf]] /* Link to [[https://www.overleaf.com/project/5c091fbd8795b4614778100c|Overleaf]] (old one) */ /* Link to [[https://www.dropbox.com/sh/ry8x2x5wco4xbxx/AAAy782OD9Mhbca7Cov0Ws5Oa?dl=0|Dropbox (backup)]] */ === Starting points === * [[LCGT/Meeting/f2f/2018Dec/FuSat|Satellite Meeting on Future Upgrade of KAGRA]] * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=9392|FPC proposal by Y. Aso]] * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=9313|Summary of Past Discussions on KAGRA Upgrade (>_<)]] * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=8427|Observation scenario including LIGO/Virgo O5 upgrades]] <> === Meetings === * [[KAGRA/KSC/FPC/Meetings/190108|2019/01/08 telecon]] * [[KAGRA/KSC/FPC/Meetings/190205|2019/02/05 telecon]] * [[https://indico.ego-gw.it/event/12/|2019/02/16 KIW5]] * [[KAGRA/KSC/FPC/Meetings/190308|2019/03/08 telecon]] * [[KAGRA/KSC/FPC/Meetings/190319-LVC|LVC meeting reports]] * [[KAGRA/KSC/FPC/Meetings/190410|2019/04/10 telecon]] * [[LCGT/Meeting/f2f/2019Apr/FuSat|2019/04/18 F2F Satellite meeting]] * [[KAGRA/KSC/FPC/Meetings/190520|2019/05/20 telecon]] * [[KAGRA/KSC/FPC/Meetings/190614|2019/06/14 telecon]] * [[http://kiw6.csp.escience.cn/|2019/06/21 KIW6]] * [[LCGT/Meeting/f2f/2019Aug/FuSat|2019/8/21 F2F Satellite meeting]] === 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 effect [Tatsuya Narikawa] * NS remnant [??] * kilonova [Kyohei Kawaguchi] * 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] * GW lensing [Lijing Shao] * 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?, KYamamoto] * Suspending larger mirror [Okutomi? Aso?] * Suspension design for suspension thermal noise reduction (upper stage masses, sapphire blades, ribbon design) [KYamamoto, Tomaru?] * Improving heat conductivity of sapphire fibers [Tomaru?] * Extreme RSE (high SRM reflectivity possible?) [Enomoto?] * Technological noises at low frequencies [Michimura?] * Newtonian noise cancellation [Nishizawa? Shimoda?] * Quantum locking [KNagano] * Silicon mass [Komori?] * 1550nm/2000nm laser [Li-Wei Wei?] * Suspension point interferometer [Aso?] * Vertical suspension point interferometer [Ando?] * Thermal compensation system (BS/PRMs) * Balanced homodyne detector * Low-loss output faraday isolator [Somiya?] * Suspension thermal noise cancellation using single loop wires * Khalili cavity [Somiya?] * EPR entanglement [Somiya?] * Phase camera * Double optical spring [Komori?] * 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 * Gravity decoherence noise <> * Status of the current facility * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=3997|KAGRA Document and Drawing Tree]] * 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 <> === LIGO-Virgo white papers === * LIGO Instrument science white paper (2017): [[https://dcc.ligo.org/public/0142/T1700231/003/T1700231-v3.pdf|LIGO-T1700231–v2]] * LIGO Instrument science white paper (2018): [[https://dcc.ligo.org/public/0151/T1800133/004/T1800133-instrument-science-white-v4.pdf|LIGO-T1800133–v3]] * The LSC-Virgo White Paper on Gravitational Wave Data Analysis and Astrophysics (July 2017 edition): [[https://dcc.ligo.org/public/0142/T1700214/004/WP17.pdf|LIGO–T1700214-v4]] VIR-0435D-17 * The LSC-Virgo White Paper on Gravitational Wave Data Analysis and Astrophysics (Summer 2018 edition): [[https://dcc.ligo.org/public/0150/T1800058/002/WP18.pdf|LIGO–T1800058-v2]] VIR-0119B-18 <> === References === * [[LCGT/subgroup/ifo/BW|LCGT Observation Band study]] * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/DocDB/ShowDocument?docid=876|KAGRA System Engineering Management Plan (SEMP)]] * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7038|Latest estimated sensitivity of KAGRA (v201708) *APPROVED*]] * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=9314|Document Tree for KAGRA Upgrade]] * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=9537|Example sensitivity curves for the KAGRA upgrade]] * [[https://arxiv.org/abs/1804.09894|Particle swarm optimization of the sensitivity of a cryogenic gravitational wave detector]] * [[https://git.ligo.org/gwinc|gwinc]]