Search for backstreaming ion defocusing during a single pulse of a 2 kA relativistic electron beam

E. J. Lauer, George J Caporaso, F. W. Chambers, Y. J. Chen, S. Falabella, G. Guethlein, J. McCarrick, R. Richardson, S. Sampayan, J. Weir

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

Desorption and subsequent ionization of the monolayers from the vacuum wall of an accelerator system can have a detrimental effect on the performance of the beam transport system. Ions extracted from the resultant plasma neutralize the spacecharge and dynamically perturb the net focusing forces within the beam. To study the effect, a transparent first foil, presumably with contaminants on the surface, intercepts the beam. Placing an imaging foil tens of centimeters downstream from the first foil allows observation of minor fluxuations in the envelope. Using conducting foil targets, we see no effect unless the beam radius is small enough to damage the foil. Non-conducting foils produce a strong effect.

Original languageEnglish (US)
Title of host publicationBEAMS 2002 - 14th International Conference on High-Power Particle Beams
Pages248-251
Number of pages4
Volume1
StatePublished - 2002
Externally publishedYes
Event14th International Conference on High-Power Particle Beams, BEAMS 2002 and the 5th International Conference on Dense Z-Pinches, DZP 2002 - Albuquerque, NM, United States
Duration: Jun 23 2002Jun 28 2002

Other

Other14th International Conference on High-Power Particle Beams, BEAMS 2002 and the 5th International Conference on Dense Z-Pinches, DZP 2002
CountryUnited States
CityAlbuquerque, NM
Period6/23/026/28/02

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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    Lauer, E. J., Caporaso, G. J., Chambers, F. W., Chen, Y. J., Falabella, S., Guethlein, G., McCarrick, J., Richardson, R., Sampayan, S., & Weir, J. (2002). Search for backstreaming ion defocusing during a single pulse of a 2 kA relativistic electron beam. In BEAMS 2002 - 14th International Conference on High-Power Particle Beams (Vol. 1, pp. 248-251). [6219437]