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Emittance Limitation of a Conditioned Beam in a Strong Focusing FEL Undulator

Z. Huang·G. Stupakov·S. Reiche
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Abstract

Various methods have been proposed to condition an electron beam in order to reduce its emittance effect and to improve the short-wavelength free electron laser (FEL) performance. In this paper, we show that beam conditioning does not result in a complete elimination of the emittance effect in an alternating-gradient focusing FEL undulator. Using a one-dimensional model and a three-dimensional simulation code, we derive a criteria for the emittance limitation of a perfectly conditioned beam that depends on the focusing structure.

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Z. Huang, G. Stupakov, S. Reiche. 2006-03-23. Emittance Limitation of a Conditioned Beam in a Strong Focusing FEL Undulator. https://doi.org/10.1142/s0217751x07037457

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