Experimental study of a 33.3-GHz free-electron laser amplifier with a reversed axial guide magnetic field

Manoel E. Conde; George Bekefi

doi:10.1117/12.137116

1 April 1992 Experimental study of a 33.3-GHz free-electron laser amplifier with a reversed axial guide magnetic field

Manoel E. Conde, George Bekefi

Proceedings Volume 1629, Intense Microwave and Particle Beams III; (1992) https://doi.org/10.1117/12.137116
Event: OE/LASE '92, 1992, Los Angeles, CA, United States

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.

Citation Download Citation

Manoel E. Conde and George Bekefi "Experimental study of a 33.3-GHz free-electron laser amplifier with a reversed axial guide magnetic field", Proc. SPIE 1629, Intense Microwave and Particle Beams III, (1 April 1992); https://doi.org/10.1117/12.137116

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