Sheet electron beam confinement for rectangular cross-section Cerenkov amplifiers

Author

Booske, John H. ; McVey, B.D. ; Joe, J. ; Scharer, John E. ; Basten, M. ; Kumbasar, A.H. ; Antonsen, T.

Author_Institution

Dept. of Electr. & Comput. Eng. Wisconsin Univ., Madison, WI, USA

fYear

1993

fDate

7-9 June 1993

Firstpage

77

Abstract

Summary form only given, as follows. Analyses have been performed which predict that sheet electron beams confined by periodic cusped magnetic (PCM) focusing should be stable against low-frequency breakup instabilities (such as diocotron) provided the magnet period is short enough. Criteria have been identified delimiting a regime of stable, focused sheet beam propagation. Several PCM configurations providing two-plane focusing have been evaluated. An open-sided configuration using offset pole pieces has been found to be preferable in terms of maximum focusing strength, beam entrance matching to minimize emittance spread, and accessibility for input and output RF coupling.

Keywords

electron beam focusing; accessibility; beam entrance matching; beam stability; diocotron instability; electron beam confinement; emittance spread; input RF coupling; low-frequency breakup instabilities; magnet period; maximum focusing strength; offset pole pieces; output RF coupling; periodic cusped magnetic focusing; rectangular cross-section Cerenkov amplifiers; sheet electron beams; stable focused sheet beam propagation regime; two-plane focusing; Astronomy; Educational institutions; Electron beams; Laboratories; Magnetic analysis; Magnetic confinement; Phase change materials; Physics; Plasma confinement; Plasma stability;

fLanguage

English

Publisher

ieee

Conference_Titel

Plasma Science, 1993. IEEE Conference Record - Abstracts., 1993 IEEE International Conference on

Conference_Location

Vancouver, BC, Canada

ISSN

0730-9244

Print_ISBN

0-7803-1360-7

Type

conf

DOI

10.1109/PLASMA.1993.593022

Filename

593022