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Dynamical stability of electron trajectories in a free-electron laser with quadrupole wiggler

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Abstract

The dynamical stability of electron trajectories of a free-electron laser with a quadrupole wiggler is studied. For this purpose, the numerical computation of Kolmogorov entropy is used. Self-electric and self-magnetic fields are taken into account, and the focusing of the beam is enhanced by an axial magnetic field. A considerable decrease in the dynamical stability of electron trajectories was found when self-fields are considered. Also, it was found that an axial magnetic field can significantly alter the regular trajectories of the electrons.

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Authors and Affiliations

  1. Department of Physics, Amirkabir University of Technology, Tehran, 15875-4413, Iran

    M. Hosseini

  2. School of Particles and Accelerator Physics, Institute for Research in Fundamental Sciences (IPM), Tehran, 19395-5531, Iran

    E. Salehi

  3. Department of Chemistry and Physical Sciences, Pace University, Pleasantville, NY, 10570, USA

    B. Maraghechi

Authors
  1. M. Hosseini
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  2. E. Salehi
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  3. B. Maraghechi
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Correspondence to E. Salehi.

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Hosseini, M., Salehi, E. & Maraghechi, B. Dynamical stability of electron trajectories in a free-electron laser with quadrupole wiggler. Indian J Phys 93, 1259–1264 (2019). https://doi.org/10.1007/s12648-019-01406-w

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  • DOI: https://doi.org/10.1007/s12648-019-01406-w

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