Microwave production by a free-electron laser bunched beam driving a resonant cavity at 35 GHz

Author

Lefevre, Thibaut ; Gardelle, Jacques ; Rullier, Jean-Luc ; Donohue, John T. ; Lidia, Steven M.

Author_Institution

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

Volume

28

Issue

3

fYear

2000

fDate

6/1/2000 12:00:00 AM

Firstpage

812

Lastpage

820

Abstract

In the two-beam accelerator scheme, a high-current electron beam, bunched at the resonant frequency, traverses extraction cavities, where it generates power intended to drive accelerating cavities on the main beam. Here, we report on work performed to test some aspects of this scheme. We used a free-electron-laser (FEL) amplifier at 35 GHz to bunch a beam of electrons, which is then transported and focused into a resonant cavity. The results of earlier bunching experiments had demonstrated the capacity of the FEL supplied by an induction linac to generate an appropriate drive beam. A summary of this earlier work is presented along with measurements of power from the cavity. This constitutes the first observation of high-frequency power extraction using a FEL in this scheme.

Keywords

electron beam focusing; free electron lasers; laser cavity resonators; microwave tubes; particle beam bunching; 35 GHz; accelerating cavities; drive beam; electron beam bunching; electron beam focusing; electron beam transport; extraction cavities; free electron laser amplifier; free-electron laser bunched beam; high-current electron beam; high-frequency power extraction; induction linac; microwave production; power generation; power measurement; resonant cavity; resonant frequency; two-beam accelerator scheme; Electron accelerators; Electron beams; Free electron lasers; High power microwave generation; Laser beams; Masers; Power generation; Production; Resonance; Resonant frequency;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/27.887730

Filename

887730