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Theory of longitudinal beam halo in RF linacs. II. Envelope-particle resonances

S.M. Lund, J.J. Barnard
Proceedings of the 1997 Particle Accelerator Conference (Cat. No.97CH36167)  

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Using the core/test-particle model described in a companion paper in these proceedings 1 ("Theory of Longitudinal Halo in rf Linacs: I. Core/Test-Particle Formulation," by J. J. Barnard and S. M. Lund), we analyze longitudinal beam halo produced by resonant self-field interactions in intense, ion-beam rf linacs. It is shown that particles moving in the presence of the space-charge forces of an oscillating, mismatched ellipsoidal beam bunch can be resonantly driven to large longitudinal
more » ... . This resonantly produced halo is first analyzed in a limit where it is most simply understood, with particles moving purely longitudinally and with linear rf focusing. Then modifications of the resonance induced by nonlinear rf and transverse-longitudinal coupling are explored.
doi:10.1109/pac.1997.751065 fatcat:t66xgxr4ezhwtc5ljzv4y3ie3q
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S.M. Lund, J.J. Barnard. "Theory of longitudinal beam halo in RF linacs. II. Envelope-particle resonances." Proceedings of the 1997 Particle Accelerator Conference (Cat. No.97CH36167)