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Extracting symplectic maps for space-charge dominated beams

Nikhil Bachhawat* and Vladimir Litvinenko†

  • *Contact author: nikhil.bachhawat@stonybrook.edu
  • †Also at Brookhaven National Laboratory, Upton, New York 11973, USA.
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Phys. Rev. Accel. Beams 28, 104602 – Published 14 October, 2025

DOI: https://doi.org/10.1103/jykb-d8f1

Abstract

Symplecticity of transfer maps is important for reliable evaluation of space-charge dominated beams in accelerators. Unfortunately, most simulation codes that include collective effects, such as space charge, do not use canonical phase-space variables and therefore are not symplectic in the presence of electromagnetic fields. In this paper, we present a numerical method to extract local linear symplectic transfer maps using particle tracking simulation code impact-t for space-charge dominated beams. We demonstrate this method for the photoinjector (113 MHz SRF gun) section of the Coherent electron Cooling (CeC) Proof of Principle (POP) experiment.

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References (30)

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Phys. Rev. Accel. Beams 28, 104602– Published 14 October, 2025
  • Received 14 March 2025
  • Accepted 17 September 2025
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