Speaker
Guido Sterbini
(European Organization for Nuclear Research)
Description
In modern circular accelerators, beam mismatch at injection into non-linear lattices can play a crucial role for beam quality degradation. In this work, we explore the process of non-linear matching within the Kolmogorov–Arnold–Moser (KAM) quasi-periodic regime, focusing on how the intrinsic phase-space structure influences the evolution of initial beam distributions. Using a topological approach, we quantify how mismatched Gaussian beams can develop non-Gaussian tails when propagated through non-linear focusing elements, as a consequence of the underlying invariant tori. These results are relevant for the design and operation of high-intensity storage rings and colliders where beam-halo control is critical.
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Authors
Andrea Fornara
(European Organization for Nuclear Research)
Guido Sterbini
(European Organization for Nuclear Research)
Hannes Bartosik
(European Organization for Nuclear Research)
Massimo Giovannozzi
(European Organization for Nuclear Research)
Philippe Belanger
(University of British Columbia & TRIUMF)
