Contribution to a conference proceedings

GSI-2026-00295

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Xnlbd: A new Python package for the analysis of non-linear beam dynamics phenomena

Veres, D. (Corresponding author) ; Capoani, F. ; Giovannozzi, M. ; Montanari, C. E. ; Franchetti, G.GSI* ; Bazzani, A. ; Vrahatis, M.

2025
JACoW Publishing

Please use a persistent id in citations: doi:10.18429/JACOW-IPAC2025-WEPM047  doi:10.15120/GSI-2026-00295

Abstract: Nonlinear effects in particle accelerators have historically been treated as harmful influences that necessitate various mitigation schemes. Therefore, the simulation tools available are largely focused on identifying and correcting resonances. However, recent advances proved that nonlinear beam dynamics enables new techniques for manipulating particle beams and can characterise diffusion and chaos in particle accelerators. The simulation tools currently available for these purposes are difficult to integrate across different frameworks. This paper presents Xnlbd, a new Python package extending the Xsuite simulation framework, which aims to provide a unified set of tools for analysing nonlinear beam dynamics phenomena. It allows the visualisation of highly nonlinear phase spaces, the efficient finding of both stable and unstable fixed points and separatrices, the calculation of resonance driving terms and normal forms, and the computation of dynamic indicators for the detection of chaotic motion.

Keyword(s): Accelerator Physics ; mc5-beam-dynamics-and-em-fields - MC5: Beam Dynamics and EM Fields ; MC5.D02 - MC5.D02 Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code Developments

Note: Published by JACoW Publishing under the terms of the Creative Commons Attribution 4.0 license. Work supported by the Wolfgang Gentner Programme of the German Federal Ministry of Education and Research (grant no. 13E18CHA).

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Contributing Institute(s):

1. Helmholtz ForschAkad Hess. f. FAIR, HFHF (FHF)
2. Beam Cooling & ESR (BCE)

Research Program(s):

1. 621 - Accelerator Research and Development (POF4-621) (POF4-621)
2. Accelerator physics (HFHF project) (I:(DE-Ds200)HFHF-ACC) (I:(DE-Ds200)HFHF-ACC)

Experiment(s):

1. no experiment theory work (theory)

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Database coverage:
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