Author: Oide, K.
Paper Title Page
TUYAT0102 FCC-ee Lattice Design 52
 
  • J. Keintzel, A. Abramov, M. Benedikt, M. Hofer, K. Oide, R. Tomás García, F. Zimmermann
    CERN, Meyrin, Switzerland
  • P.J. Hunchak
    University of Saskatchewan, Saskatoon, Canada
  • T.O. Raubenheimer
    SLAC, Menlo Park, California, USA
 
  Funding: The work is also supported by the FCC-IS project, receiving funding from the European Union’s H2020 Framework Programme under grant agreement no. 951754.
Within the framework of the Future Circular Collider Feasibility and Design Study, the design of the electron-positron collider FCC-ee is being optimised, as a possible future double collider ring, currently foreseen to start operation during the 2040s. FCC-ee is designed to operate at four different energy stages, allowing for precision measurements: from the Z-pole up to above the ttbar-threshold. This synchrotron with almost 100 km circumference is designed including advanced accelerator concepts, such as the crab-waist collision scheme or one combined off-momentum and betatron collimation insertion. Furthermore, numerous optics tuning and measurement studies are being performed to drive the collider design at an early stage and guarantee its feasibility and efficient operation.
 
slides icon Slides TUYAT0102 [3.431 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-eeFACT2022-TUYAT0102  
About • Received ※ 29 November 2022 — Revised ※ 06 February 2023 — Accepted ※ 08 February 2023 — Issue date ※ 11 February 2023
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THYAS0202
Optics Design for a Monochromatization Scheme for the Direct S-Channel Higgs Production at FCC-ee Collider  
 
  • H.P. Jiang
    HIT, Harbin, People’s Republic of China
  • A. Faus-Golfe
    IFIC, Valencia, Spain
  • A. Faus-Golfe, Z.D. Zhang
    Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
  • K. Oide, F. Zimmermann, F. Zimmermann, F. Zimmermann
    CERN, Meyrin, Switzerland
  • K. Oide
    KEK, Ibaraki, Japan
  • Z.D. Zhang
    IHEP, Beijing, People’s Republic of China
  • Z.D. Zhang
    UCAS, Beijing, People’s Republic of China
  • F. Zimmermann
    APS, Silver Spring, USA
 
  The FCC-ee collider baseline foresees four different energy operation modes: Z, WW, H(ZH) and ttbar. An optional fifth mode, called s-channel Higgs production mode, could allow the measurement of the electron Yukawa coupling, in dedicated runs at 125 GeV centre-of-mass energy, provided that the centre-of-mass energy spread, can be reduced by at least an order of magnitude (5-10 MeV). The use of a special collision technique known as monochromatization scheme (mono-scheme) is one way to accomplish it. The transverse monochromatization scheme consists of introducing a dispersion function different from zero but of opposite sign for the two colliding beams at the Interaction Point (IP); In this paper, we will report about the trade-off between energy spread and luminosity, and the first attempt to design a new optics to implement a transverse monochromatic scheme for the FCC-ee Higgs production.  
slides icon Slides THYAS0202 [2.133 MB]  
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FRXAS0101 Power Budgets and Performance Considerations for Future Higgs Factories 256
 
  • F. Zimmermann
    CERN, Meyrin, Switzerland
  • S.A. Belomestnykh, V.D. Shiltsev
    Fermilab, Batavia, Illinois, USA
  • M.E. Biagini, M. Boscolo
    LNF-INFN, Frascati, Italy
  • A. Faus-Golfe
    Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
  • J. Gao
    IHEP, Beijing, People’s Republic of China
  • M. Koratzinos
    PSI, Villigen PSI, Switzerland
  • B. List
    DESY, Hamburg, Germany
  • V. Litvinenko
    Stony Brook University, Stony Brook, USA
  • E.A. Nanni, P. Raimondi, T.O. Raubenheimer, J.T. Seeman
    SLAC, Menlo Park, California, USA
  • K. Oide
    DPNC, Genève, Switzerland
  • R.A. Rimmer, T. Satogata
    JLab, Newport News, Virginia, USA
 
  Funding: Work supported by the European Union’s H2020 Framework Programme under grant agreement no. 951754 (FCCIS), and by Fermi Research Alliance, LLC, under contract No. De-AC02-07CH11359 with the US DoE.
A special session at eeFACT’22 reviewed the electrical power budgets and luminosity risks for eight proposed future Higgs and electroweak factories (CCC, CEPC, CERC, CLIC, FCC-ee, HELEN, ILC, and RELIC) and, in comparison, for a lepton-hadron collider (EIC) presently under construction. We report highlights of presentations and discussions.
 
slides icon Slides FRXAS0101 [1.291 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-eeFACT2022-FRXAS0101  
About • Received ※ 16 January 2023 — Revised ※ 04 February 2023 — Accepted ※ 08 February 2023 — Issue date ※ 10 February 2023
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