Low-Energy Transport Of High-Brightness H- Beams

M Reiser; C R Chang; D Chernin; E Horowitz

doi:10.1117/12.965094

9 May 1988 Low-Energy Transport Of High-Brightness H- Beams

M Reiser, C R Chang, D Chernin, E Horowitz

Proceedings Volume 0873, Microwave and Particle Beam Sources and Propagation; (1988) https://doi.org/10.1117/12.965094
Event: 1988 Los Angeles Symposium: O-E/LASE '88, 1988, Los Angeles, CA, United States

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.

Citation Download Citation

M Reiser, C R Chang, D Chernin, and E Horowitz "Low-Energy Transport Of High-Brightness H- Beams", Proc. SPIE 0873, Microwave and Particle Beam Sources and Propagation, (9 May 1988); https://doi.org/10.1117/12.965094

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