Nonlinear theory of a quadrupole free-electron laser |
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Authors: | Antonsen T. Levush B. |
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Affiliation: | Lab. for Plasma and Fusion Energy Studies, Univ. of Maryland, College Park, MD, USA; |
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Abstract: | The nonlinear motion of electrons in a quadrupole free-electron laser is analyzed. If the betatron frequency is close to the mismatch frequency, the three-dimensional nonlinear equations can be reduced to an integrable one-dimensional equation. To enhance the efficiency, a tapered wiggler is introduced and the electron orbits in a tapered quadrupole free-electron laser are analyzed. The conditions for the particles to remain trapped as the heat wave decelerates are found. |
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