Work

Incoherent horizontal emittance growth due to the interplay of beam-beam interaction and longitudinal wakefield in crab-waist colliders

Year: 2025

Type: article

Abstract: In this paper, we investigate incoherent quadrupolar synchrobetatron resonances caused by beam-beam collisions and their interplay with longitudinal wakefields in the context of crab-waist colliders. We present a comprehensive theoretical review of the established theory of synchrobetatron resonances and extend the formalism to explore horizontal synchrobetatron resonances specific to crab-waist colliders. As a case study, we examine incoherent horizontal emittance growth at the SuperKEKB and demonstrate through simulations that the interplay between beam-beam and longitudinal wakefields leads to a horizontal blowup of the bunch size and that the study of the dynamics can be reduced to the horizontal-longitudinal plane, independent of the motion in the vertical dimension. We present extensive simulation results using the codes , y, and , connect our analytical findings with these findings, and propose strategies to mitigate horizontal blowup.

Source: Physical Review Accelerators and Beams

DOI: 10.1103/physrevaccelbeams.28.051002

Authors: Peter Kicsiny, Demin Zhou, Xavier Buffat, Tatiana Pieloni, Mike Seidel

Institutions: École Polytechnique Fédérale de Lausanne, European Organization for Nuclear Research, High Energy Accelerator Research Organization, The Graduate University for Advanced Studies, SOKENDAI

Language: English

Topic: Particle accelerators and beam dynamics

Subfield: Aerospace Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: diamond

Funder: HORIZON EUROPE Marie Sklodowska-Curie Actions

Award: Europe-America-Japan Accelerator Development and Exchange Programme