Measurements of microwave power and frequency in a pulsed free electron laser amplifier

Author

Gardelle, Jacques ; Lefevre, Thibaut ; Marchese, Gerard ; Rullier, Jean-Luc ; Donohue, John T.

Author_Institution

Centre d´´Etudes Sci. et Tech. d´´Aquitaine, CEA, Le Barp, France

Volume

25

Issue

6

fYear

1997

fDate

12/1/1997 12:00:00 AM

Firstpage

1419

Lastpage

1424

Abstract

We report output power and frequency measurements of a pulsed free electron laser (FEL) operating as an amplifier at 35 GHz, without guiding field. The experiment used an induction linac, which delivers an 800-A relativistic electron beam (2.2 MeV) with a flat-top of 40 ns into the helical wiggler. The input signal furnished by a 35-GHz magnetron source is amplified to power levels of the order of 80 MW. The experimental results are in good agreement with our simulations. Frequency chirping is observed, and its behavior as a function of the basic FEL parameters is discussed

Keywords

chirp modulation; free electron lasers; microwave amplifiers; wigglers; 2.2 MeV; 35 GHz; 40 ns; 80 MW; 800 A; frequency; frequency chirping; helical wiggler; induction linac; input signal; magnetron source; microwave power; output power; pulsed free electron laser amplifier; Electrons; Frequency measurement; Magnetic field measurement; Microwave measurements; Optical pulses; Power amplifiers; Power generation; Power measurement; Pulse amplifiers; Pulse measurements;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/27.650912

Filename

650912