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'Journal of Accelerator Conferences Website' (JACoW) is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.


https://doi.org/10.18429/JACoW-eeFACT2022-THXAT0104
Title FCC-ee e⁺e⁻ Injection and Booster rRng
Authors
  • R.L. Ramjiawan, M.J. Barnes, W. Bartmann, J.C.C.M. Borburgh, Y. Dutheil, M. Hofer
    CERN, Meyrin, Switzerland
  • A. Chancé
    CEA, Gif-sur-Yvette, France
  • B. Dalena
    CEA-IRFU, Gif-sur-Yvette, France
  • E.R. Howling
    Royal Holloway, University of London, Surrey, United Kingdom
  • P.J. Hunchak
    University of Saskatchewan, Saskatoon, Canada
Abstract The Future Circular electron-positron Collider (FCC-ee) is a proposal for a 91.17 km collider, which would operate in four modes with energies ranging from 45.6 GeV (Z-pole) to 182.5 GeV (ttbar-production). At high energies the beam lifetime could be as low as 6 minutes, requiring the beam to be continuously topped up to reach a high integrated luminosity. This top-up injection would use a separate booster ring in the same tunnel as the collider, which would accelerate the beams to the collider energy. The booster ring should achieve a lower equilibrium emittance than the collider, despite challenges such as a long damping time and no magnet-strength tapering to compensate for the impact of synchrotron radiation. For top-up injection into the collider, we consider two strategies: conventional bump injection, employing a closed orbit bump, and injection using a multipole kicker magnet. On-axis and off-axis sub-schemes will be studied for both. We compare these injection strategies on aspects including spatial constraints, machine protection, perturbation to the stored beam and hardware parameters.
Funding This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 951754.
Paper download THXAT0104.PDF [1.917 MB / 9 pages]
Slides download THXAT0104_TALK.PDF [3.137 MB]
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Conference eeFACT2022
Series ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+e- Colliders (65th)
Location Frascati, Italy
Date 12-16 September 2022
Publisher JACoW Publishing, Geneva, Switzerland
Editorial Board Maria Enrica Biagini (INFN-LNF, Frascati, Italy); Jan Chrin (PSI, Villigen, Switzerland); Manuela Giabbai (INFN-LNF, Frascati, Italy); Massimiliano Iungo (INFN-LNF, Frascati, Italy); Volker R.W. Schaa (GSI, Darmstadt, Germany)
Online ISBN 978-3-95450-236-3
Online ISSN 2673-7027
Received 27 October 2022
Revised 03 February 2023
Accepted 07 February 2023
Issue Date 12 February 2023
DOI doi:10.18429/JACoW-eeFACT2022-THXAT0104
Pages 227-235
Copyright
Creative Commons CC logoPublished by JACoW Publishing under the terms of the Creative Commons Attribution 4.0 International license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI.