Wake Fields and Impedance

L. Palumbo, V. G. Vaccaro, M. Zobov
Knowledge of the electromagnetic interaction between a beam and the surrounding vacuum chamber is necessary in order to optimize the accelerator per-formance in terms of stored current. Many instability phenomena may occur in the machine because of the fields produced by the beam and acting back on itself as in a feedback device. Basically, these fields produce an extra voltage and energy gain, affecting the longitudinal dynamics, and a transverse momentum kick which deflects the beam. In this
more » ... the beam. In this paper we describe the main features of this interaction with typical machine components.
doi:10.15161/oar.it/1448441728.46 fatcat:44owsb7k2rfctccy2434pla6eq