Abstract: The part of the ongoing study of the future circular collider (FCC) [1] is an electron positron machine with center of mass energy from 90 to 350 GeV. Crab waist collision scheme [2, 3] and small (1 mm) vertical beta function at the interaction point (IP) provide superior luminosity. At the top energy, radiation in the field of the opposite bunch (beamstrahlung) [3–5] limits the beam lifetime and therefore achievable luminosity. Beamstrahlung influence depends on momentum acceptance of the lattice, and acceptance of 2% provides acceptable lifetime. The small value of vertical beta function enhances effects of nonlinear chromaticity. The present work describes principles used in design and optimization of FCC-ee momentum acceptance optimization.

Cite: Bogomyagkov A. , Levichev E.
Momentum Acceptance Optimization in FCC-ee Lattice (CERN)
In compilation Proceedings, 7th International Particle Accelerator Conference (IPAC 2016) : Busan, Korea, May 8-13, 2016. – JACoW., 2016. – C.3814-3817. – ISBN 9783954501472. DOI: 10.18429/JACoW-IPAC2016-THPOR019 OpenAlex

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W2584429715

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