Published May 25, 1987 | Version v1
Journal article

Design of low velocity-spread cusp guns for axis encircling beams

Creators

  • 1. Electrical Engineering Department and Laboratory for Plasma and Fusion Energy Studies, University of Maryland, College Park, Maryland 20742

Description

The design of a novel electron gun suitable for intense beam cyclotron resonance devices is introduced here. An annular Pierce-type gun is used in conjunction with an unbalanced nonadiabatic field reversal and an adiabatic compression region to produce an axis-encircling beam. This beam is ideally suited for interaction with electromagnetic waves that have strong on-axis electric fields (e.g., the TE0/sub 11/ mode). Low velocity spreads are achieved by utilizing the beam self-fields in the compression region and by focusing in the Pierce gun

Additional details

Publishing Information

Journal Title
Appl. Phys. Lett.
Journal Volume
50
Journal Issue
21
Series
Appl. Phys. Lett.
Journal Page Range
1477-1479
ISSN
0003-6951
CODEN
APPLA