Author: Bogomyagkov, A.V.
Paper Title Page
TUOCB1 Progress in the Design of Beam Optics for FCC-ee Collider Ring* 1281
 
  • K. Oide, K. Ohmi
    KEK, Ibaraki, Japan
  • M. Benedikt, H. Burkhardt, B.J. Holzer, A. Milanese, J. Wenninger, F. Zimmermann
    CERN, Geneva, Switzerland
  • A.P. Blondel, M. Koratzinos
    DPNC, Genève, Switzerland
  • A.V. Bogomyagkov, E.B. Levichev, D.N. Shatilov
    BINP SB RAS, Novosibirsk, Russia
  • M. Boscolo
    INFN/LNF, Frascati (Roma), Italy
 
  The beam optics for the FCC-ee collider has been updated: (a) the layout is adjusted to a new footprint of FCC-hh, (b) the design around the interaction point is refined considering a number of machine-detecor interface issues, (c) the arc lattice is refined taking realistic magnet designs into account, (d) the β* and betatron tunes are re-optimized according to recent results of the beam-beam simulations, and more. These changes make the collider design more realistic without performance degradation.  
slides icon Slides TUOCB1 [4.891 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUOCB1  
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WEPIK034 Progress in the FCC-ee Interaction Region Magnet Design 3003
 
  • M. Koratzinos, A.P. Blondel
    DPNC, Genève, Switzerland
  • M. Benedikt, F. Zimmermann
    CERN, Geneva, Switzerland
  • E.R. Bielert
    University of Illinois at Urbana-Champaign, Illinois, USA
  • A.V. Bogomyagkov, S.V. Sinyatkin, P. Vobly
    BINP SB RAS, Novosibirsk, Russia
  • M. Boscolo
    INFN/LNF, Frascati (Roma), Italy
  • M. Dam
    NBI, København, Denmark
  • K. Oide
    KEK, Ibaraki, Japan
 
  The design of the region close to the interaction point of the FCC-ee experiments is especially challenging. The beams collide at an angle (±15mrad) in a region where the detector solenoid magnetic field is large. Moreover, the very low vertical β* of the machine necessitates that the final focusing quadrupoles are also inside this high field region. The beams should be screened from the effect of the detector solenoid field, and the emittance blow-up due to vertical dispersion in the interaction region should be minimized while leaving enough space for detector components. Crosstalk between the two final focus quadrupoles, only about 6 cm apart at the tip, should also be minimized. We present an update on the subject.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-WEPIK034  
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