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Open Access Publications from the University of California

Symplectic models for general insertion devices

  • Author(s): Wu, Y.
  • Forest, E.
  • Robin, D.S.
  • Nishimura, H.
  • Wolski, A.
  • Litvinenko, V.N.
  • et al.

A variety of insertion devices (IDs), wigglers and undulators, linearly or elliptically polarized,are widely used as high brightness radiation sources at the modern light source rings. Long and high-field wigglers have also been proposed as the main source of radiation damping at next generation damping rings. As a result, it becomes increasingly important to understand the impact of IDs on the charged particle dynamics in the storage ring. In this paper, we report our recent development of a general explicit symplectic model for IDs with the paraxial ray approximation. High-order explicit symplectic integrators are developed to study real-world insertion devices with a number of wiggler harmonics and arbitrary polarizations.

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