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BE: Beschleunigerphysik

BE 13: Beam Dynamics and Fields II

BE 13.1: Talk

Thursday, April 3, 2014, 09:30–09:45, ZEU 255

Progress in Eigenmode Computation Using Perturbative Methods — •Korinna Brackebusch and Ursula van Rienen — Institute of General Electrical Engineering,University of Rostock

Parametric studies of geometric variations are an essential part of the performance optimization and error estimation in the design of accelerator cavities. Using common eigenmode solvers the analysis of intentional and undesired geometric perturbations tend to be very extensive since any geometric variation involves an entire recomputation. Perturbative methods constitute an efficient alternative for the computation of a multitude of moderately varying geometries. Their practicability was proven by means of simple cavity geometries.

We present the progress in eigenmode computation using perturbative methods, showing improvements of the algorithm and latest results for single and multi cell cavities subject to cylindrically symmetric and nonuniform perturbations.