Abstract
The aim of this paper is to propose a quasi-invariant technique suitable for describing the transverse dynamics of electrons in a synchrotron and to exhibit that the methodology allows the emergence of resonances in phase space. The proposed technique is implemented by using symbolic computation software, which provides sets of coupled differential equations for functions participating in the nonlinear dynamics, numerically solved with periodic boundary conditions. This approach allows the construction of an approximate invariant in a vicinity of the phase space origin. That portion of phase space is used for holding a stable beam of charge particles in synchrotrons. The submitted approach capability for describing the phase space is tested by comparing numerical results obtained with this technique against tracking simulations performed with available software. Finally, the possibility of applying this technique to control resonances in the optimization of the fourth-generation synchrotron light sources magnetic lattices is discussed.
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The data generated or analyzed during the current study are available from the corresponding author on reasonable request.
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Acknowledgements
This work was supported by UNAM-PAPIIT IN108522. We thank Reyes García Carreón for his help in the computational part of this work.
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Sánchez, E.A., Flores, A., Hernández-Cobos, J. et al. Onset of resonances by roots overlapping using quasi-invariants in nonlinear accelerator dynamics. Nonlinear Dyn 110, 1583–1596 (2022). https://doi.org/10.1007/s11071-022-07675-1
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DOI: https://doi.org/10.1007/s11071-022-07675-1