25 July 1989 Transport Of Intense, High-Brightness H- Beams
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Abstract
The generation of intense, high-brightness H- beams requires solutions of several physics and technology problems in the low-energy beam transport (LEBT) section of the accelerator to avoid particle losses and emittance growth. Practical constraints limit the current and intrinsic emittance of the beam. On the other hand, the focusing capability of magnetic lenses is limited, and most existing accelerators use space-charge neutralization in a background gas such as Xenon, often in combination with magnetic lenses, to transport the beam. However, the demands for higher beam brightness and intensity require a better understanding of the gas focusing mechanism. Previous one-dimensional fluid studies have given insight into the approach to steady state from the charge-neutralized state when considering a frozen beam profile. In this paper, we present the results of including the response of the beam to the plasma.
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E. J. Horowitz, E. J. Horowitz, C. R. Chang, C. R. Chang, M. Reiser, M. Reiser, } "Transport Of Intense, High-Brightness H- Beams", Proc. SPIE 1061, Microwave and Particle Beam Sources and Directed Energy Concepts, (25 July 1989); doi: 10.1117/12.951829; https://doi.org/10.1117/12.951829
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