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.
Lauer, E J;
Caporaso, G J;
Chambers, F W;
Chen, Y -J;
Falabella, S;
Guethlein, G;
McCarrick, J;
Richardson, R;
Sampayan, S;
Weir, J
[1]
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, CA 94551 (United States)
Citation Formats
Lauer, E J, Caporaso, G J, Chambers, F W, Chen, Y -J, Falabella, S, Guethlein, G, McCarrick, J, Richardson, R, Sampayan, S, and Weir, J.
Search for backstreaming ion defocusing during a single pulse of a 2 kA relativistic electron beam.
United States: N. p.,
2002.
Web.
doi:10.1063/1.1530846.
Lauer, E J, Caporaso, G J, Chambers, F W, Chen, Y -J, Falabella, S, Guethlein, G, McCarrick, J, Richardson, R, Sampayan, S, & Weir, J.
Search for backstreaming ion defocusing during a single pulse of a 2 kA relativistic electron beam.
United States.
https://doi.org/10.1063/1.1530846
Lauer, E J, Caporaso, G J, Chambers, F W, Chen, Y -J, Falabella, S, Guethlein, G, McCarrick, J, Richardson, R, Sampayan, S, and Weir, J.
2002.
"Search for backstreaming ion defocusing during a single pulse of a 2 kA relativistic electron beam."
United States.
https://doi.org/10.1063/1.1530846.
@misc{etde_20621240,
title = {Search for backstreaming ion defocusing during a single pulse of a 2 kA relativistic electron beam}
author = {Lauer, E J, Caporaso, G J, Chambers, F W, Chen, Y -J, Falabella, S, Guethlein, G, McCarrick, J, Richardson, R, Sampayan, S, and Weir, J}
abstractNote = {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.}
doi = {10.1063/1.1530846}
journal = []
issue = {1}
volume = {650}
journal type = {AC}
place = {United States}
year = {2002}
month = {Dec}
}
title = {Search for backstreaming ion defocusing during a single pulse of a 2 kA relativistic electron beam}
author = {Lauer, E J, Caporaso, G J, Chambers, F W, Chen, Y -J, Falabella, S, Guethlein, G, McCarrick, J, Richardson, R, Sampayan, S, and Weir, J}
abstractNote = {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.}
doi = {10.1063/1.1530846}
journal = []
issue = {1}
volume = {650}
journal type = {AC}
place = {United States}
year = {2002}
month = {Dec}
}