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Wuppertal 2015 – wissenschaftliches Programm

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 15: Beam Dynamics / Simulation III

AKBP 15.4: Vortrag

Donnerstag, 12. März 2015, 17:30–17:45, F.10.01 (HS 4)

A Semi-Analytic Model for The Determination of Wakefields in Dielectrically Lined Rectangular Waveguides — •Franziska Reimann1, Ursula van Rienen1, Peter Michel2, and Ulf Lehnert21Universität Rostock, Institut für All- gemeine Elektrotechnik — 2Helmholtz-Zentrum Dresden-Rossendorf

Dielectrically lined waveguides are planned to be used as a passive wakefield dechirper [1] for the electron beam at the ELBE facility of the Helmholtz-Zentrum Dresden Rossendorf. In this work we introduce a complete semi-analytical model based on eigenmode expansion [2] to determine the longitudinal wakefield in these structures. The result gained from this model is the point-charge wakefield, which serves as a Green's function for convolution with the ELBE beam shape. As an example, semi-analytical results for different beam shapes are compared to numerical results of commercial software, e.g. CST Studio [3].

[1] Antipov et al., *Passive Momentum Spread Compensation by a *Wakefield Silencer"", in: Proceedings of IPAC2012, New Orleans, USA, 2012

[2] Robert E. Collin, *Field Theory of Guided Waves, Second Edition*, IEEE Press, 1991, p. 419

[3] CST Studio Suite, CST AG, Darmstadt, Germany

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