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

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 proceeding › Conference contribution

3 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 language	English (US)
Title of host publication	BEAMS 2002 - 14th International Conference on High-Power Particle Beams
Pages	248-251
Number of pages	4
Volume	1
State	Published - 2002
Externally published	Yes
Event	14th 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 2002 → Jun 28 2002

Other

Other	14th International Conference on High-Power Particle Beams, BEAMS 2002 and the 5th International Conference on Dense Z-Pinches, DZP 2002
Country	United States
City	Albuquerque, NM
Period	6/23/02 → 6/28/02

ASJC Scopus subject areas

Nuclear and High Energy Physics

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Search for backstreaming ion defocusing during a single pulse of a 2 kA relativistic electron beam. / Lauer, E. J.; Caporaso, George J; Chambers, F. W.; Chen, Y. J.; Falabella, S.; Guethlein, G.; McCarrick, J.; Richardson, R.; Sampayan, S.; Weir, J.

BEAMS 2002 - 14th International Conference on High-Power Particle Beams. Vol. 1 2002. p. 248-251 6219437.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Lauer, EJ, Caporaso, GJ, Chambers, FW, Chen, YJ, 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, 6219437, pp. 248-251, 14th International Conference on High-Power Particle Beams, BEAMS 2002 and the 5th International Conference on Dense Z-Pinches, DZP 2002, Albuquerque, NM, United States, 6/23/02.

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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.",

author = "Lauer, {E. J.} and Caporaso, {George J} and Chambers, {F. W.} and Chen, {Y. J.} and S. Falabella and G. Guethlein and J. McCarrick and R. Richardson and S. Sampayan and J. Weir",

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AU - Lauer, E. J.

AU - Caporaso, George J

AU - Chambers, F. W.

AU - Chen, Y. J.

AU - Falabella, S.

AU - Guethlein, G.

AU - McCarrick, J.

AU - Richardson, R.

AU - Sampayan, S.

AU - Weir, J.

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AB - 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.

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