Abstracts Brochure - CERN

WEXFI — Beam Dynamics and Electromagnetic . . . 28-Jun-06 09:00 - 10:30
WEXFI — Beam Dynamics and Electromagnetic Fields
Instabilities and Space Charge Resonances in High Intensity Accelerators
This presentation will review beam dynamics
in circular accelerators with high beam O. Boine-Frankenheim (GSI)
intensity and space charge effects. The main
focus will be on recent theoretical and experimental results related to collective instabilities and resonance crossing
with space charge. In the first part of the presentation, the effect of space charge on collective instability thresholds
and impedance budgets will be discussed. In this context the effect of space charge induced mode coupling on
the longitudinal microwave instability will be illustrated. The stability of longitudinal bunched beam modes and of
transverse dipole modes in the presence of space charge will be discussed. Recent work related to the transverse mode
coupling instability (TMCI) with space charge will be reviewed. In the second part of the presentation, "incoherent"
space charge effects on transverse nonlinear dynamics issues, like nonlinear resonance crossing, will be reviewed.
Observation and Modeling of Electron Cloud Instability
This presentation will review experimental
results and the state of the art in the analysis
and simulation of the electron cloud instability
in hadron and positron storage rings.
K.C. Harkay (ANL)
Non-linear Collimation in Linear and Circular Colliders
This presentation should provide an
overview of the concept of non-linear beam
optics for the collimation of beam halo in
linear accelerators and storage rings.
A. Faus-Golfe (IFIC)
Chair: R.W. Garnett (LANL, Los Alamos, New Mexico) 269
WEXFI01
WEXFI02
WEXFI03