1. Results on intense beam focusing and neutralization from the neutralized beam experiment.
- Author
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Roy, P. K., Yu, S. S., Eylon, S., Henestroza, E., Anders, A., Bieniosek, F. M., Greenway, W. G., Logan, B. G., Waldron, W. L., Vanecek, D. L., Welch, D. R., Rose, D. V., Davidson, R. C., Efthimion, P. C., Gilson, E. P., Sefkow, A. B., and Sharp, W. M.
- Subjects
ELECTRON beams ,SPACE charge ,PLASMA gases ,NEUTRALIZATION (Chemistry) ,ELECTRONS ,ELECTRON optics - Abstract
Experimental techniques to provide active neutralization for space-charge-dominated beams as well as to prevent uncontrolled ion beam neutralization by stray electrons have been demonstrated. Neutralization is provided by a localized plasma injected from a cathode arc source. Unwanted secondary electrons produced at the wall by halo particle impact are suppressed using a radial mesh liner that is positively biased inside a beam drift tube. Measurements of current transmission, beam spot size as a function of axial position, beam energy, and plasma source conditions are presented along with detailed comparisons with theory. [ABSTRACT FROM AUTHOR]
- Published
- 2004
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