DocumentCode
334852
Title
Equipartitioning and halo due to anisotropy
Author
Hofmann, Ingo
Author_Institution
Gesellschaft fur Schwerionenforschung mbH, Darmstadt, Germany
Volume
2
fYear
1997
fDate
12-16 May 1997
Firstpage
1852
Abstract
Equipartitioning and certain aspects of halo formation in high-current linac beams are explained in terms of collective multipole oscillations in x-y geometry. For strong space charge tune depression and anisotropy (emittance and/or focusing strength) some eigenmodes can-in principle-become unstable leading to emittance exchange. It is shown that for parameters of practical interest in linac design beams can be un-equipartitioned without risk of instability. The effect of (stable) mismatch core oscillations on the halo is briefly discussed
Keywords
linear accelerators; particle beam stability; space charge; anisotropy halo; collective multipole oscillations; eigenmodes; emittance exchange; equipartitioning; halo formation; high-current linac beams; instability; mismatch core oscillations; strong space charge tune depression; Anisotropic magnetoresistance; Equations; Geometry; Linear accelerators; Linear particle accelerator; Neutrons; Polynomials; Protons; Space charge; Stability;
fLanguage
English
Publisher
ieee
Conference_Titel
Particle Accelerator Conference, 1997. Proceedings of the 1997
Conference_Location
Vancouver, BC
Print_ISBN
0-7803-4376-X
Type
conf
DOI
10.1109/PAC.1997.751038
Filename
751038
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