ICFA Beam Dynamics Mini Workshop on Modern Optimization of Dynamic Aperture

Dynamic Aperture Optimization in the Presence of Incoherent Beam-Beam Effects

20 Oct 2026, 16:30

30m

Room 401 Physical Sciences (Cornell University)

Oral Operational Nonlinear Dynamics Optimization, Model Building and Measurement (Christoph Montag, Chair)

Speaker

Demin Zhou (KEK)

Description

Modern high-luminosity circular e+e- colliders require the interplay between lattice nonlinearities and beam-beam interactions to be considered in dynamic-aperture (DA) optimization in order to achieve the required beam lifetime and overall machine performance. This presentation reviews recent studies of the impact of incoherent beam-beam effects on the DA of crab-waist colliders. It also discusses the principal sources of lattice nonlinearities and the basic theory of incoherent beam-beam tune shifts and resonances in crab-waist collisions. Particular attention is given to how beam-beam interactions modify single-particle dynamics and resonance structures, and to the resulting implications for nonlinear lattice optimization.