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Proceedings Paper

Low-Energy Transport Of High-Brightness H- Beams
Author(s): M Reiser; C R Chang; D Chernin; E Horowitz
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Paper Abstract

The generation of intense, high-brightness H- beams requires solutions of several physics and technological problems in the low-energy beam transport (LEBT) section of the accelerator to avoid particle losses and emittance growth. Existing accelerators and experiments use space-charge neutralization, usually in combination with magnetic lenses, to focus the beam. However, the demands for high beam brightness and intensity require a better understanding and control of gas focusing and associated instabilities or the use of alternate methods of transporting the beam. In this paper we present results of a new theoretical treatment of the charge-neutralized beam-plasma steady state. The second part of the paper presents computer results for a novel alternate focusing scheme using electrostatic quadrupole lenses in which no plasma buildup and charge neutralization occurs. Such quadrupole lenses provide efficient strong focusing in the LFRT line and, more importantly, good control of the beam matching both into the electrostatic column and into the RPO.

Paper Details

Date Published: 9 May 1988
PDF: 18 pages
Proc. SPIE 0873, Microwave and Particle Beam Sources and Propagation, (9 May 1988); doi: 10.1117/12.965094
Show Author Affiliations
M Reiser, University of Maryland (United States)
C R Chang, University of Maryland (United States)
D Chernin, University of Maryland (United States)
E Horowitz, University of Maryland (United States)

Published in SPIE Proceedings Vol. 0873:
Microwave and Particle Beam Sources and Propagation
Norman Rostoker, Editor(s)

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