A dielectrically lined rectangular waveguide as a wakefield dechirper for ELBE

Dielectrically lined waveguides are planned to be used as a passive wakefield dechirper for the electron beam at the ELBE[1] facility of the Helmholtz-Zentrum Dresden-Rossendorf. In this work we introduce the design of such a passive wakefield dechirper based on the analysis of dielectrically lined rectangular waveguides with a semi-analytical model developed at the University of Rostock. We conduct simulations to show the effect of the different tunings of the wakefield dechirper on a Gaussian beam comparable to the ELBE beam. Furthermore, we present an experimental structure planned at the ELBE facility to verify the calculated dechirping effect.