Core-halo limit and internal dynamics of high intensity beams

The dynamics of high-intensity beams largely depends on their internal space charge forces. These forces are responsible of non-linear coupling, emittance growth, and halo generation. They contribute to shape the beam density profile. As a consequence, an analysis of this profile can be a precious i...

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Bibliographic Details
Published in:Physics of plasmas 2015-08, Vol.22 (8)
Main Authors: Nghiem, P. A. P., Valette, M., Chauvin, N., Pichoff, N., Uriot, D.
Format: Article
Language:English
Subjects:
BEAM EMITTANCE
BEAM PROFILES
BEAMS
COUPLING
Emittance
NONLINEAR PROBLEMS
PARTICLE ACCELERATORS
Plasma physics
SPACE CHARGE
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Summary:The dynamics of high-intensity beams largely depends on their internal space charge forces. These forces are responsible of non-linear coupling, emittance growth, and halo generation. They contribute to shape the beam density profile. As a consequence, an analysis of this profile can be a precious indicator capable of revealing the internal dynamics of the beam. This paper recalls the precise core-halo limit determination proposed earlier, then studies its behavior through a wide range of beam profiles, and finally shows its relevance as an indicator of the limit separating the two space charge field regimes of the core and the halo.
ISSN:1070-664X
1089-7674
DOI:10.1063/1.4929795