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Proceedings Paper

Experimental study of a 33.3-GHz free-electron laser amplifier with a reversed axial guide magnetic field
Author(s): Manoel E. Conde; George Bekefi
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Paper Abstract

We report on a new regime of free electron laser operation with reversed axial guide magnetic field, in which the rotational motion of the electrons in the helical wiggler field is opposed by the presence of the uniform guide field. The 33.3 GHz free electron laser amplifier is driven by a mildly relativistic electron beam (750 kV, 300 A, 30 ns) and generates 61 MW of radiation with a 27% conversion efficiency. Measurements with the conventional orientation of the axial field show a considerable loss of power and efficiency.

Paper Details

Date Published: 1 April 1992
PDF: 6 pages
Proc. SPIE 1629, Intense Microwave and Particle Beams III, (1 April 1992); doi: 10.1117/12.137116
Show Author Affiliations
Manoel E. Conde, Massachusetts Institute of Technology (United States)
George Bekefi, Massachusetts Institute of Technology (United States)

Published in SPIE Proceedings Vol. 1629:
Intense Microwave and Particle Beams III
Howard E. Brandt, Editor(s)

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