Electron acceleration in a helical waveguide

Abstract

Travelling wave in a helical wave guide is considered for electron acceleration. A first determination of the travelling wave modes using a partial wave expansion (PWE) and a point matching method is presented. It gives a rapid solution for moderate deformation of the guide relative to a straight cylinder. Strong deformations will give higher accelerating gradient but the PWE diverges. Two methods overcoming this difficulties are suggested.

VIII International Symposium Radiation from Relativistic Electrons in Periodic Structure (RREPS-09) Zvenigorod, Russia, September 7-11, 2009