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Haenichen, L.

Paper Title Page
TH5PFP091 Comparison of Analytical and Numerical Results for Broadband Coupling Impedance 3420
 
  • L. Haenichen, W.F.O. Müller, T. Weiland
    TEMF, TU Darmstadt, Darmstadt
  • A.M. Al-Khateeb, O. Boine-Frankenheim
    GSI, Darmstadt
 
 

Funding: This work is supported by the GSI.


Beam coupling impedances have been identified as an appropriate quantity to describe collective instabilities caused through beam-induced fields in heavy ion synchrotron accelerators such as the SIS-18 at the planned SIS-100 at the GSI facility. The impedance contributions caused by the multiple types of beamline components need to be determined to serve as input condition for later stability studies. This paper will present an approach exploiting the abilities of commercial FDTD wake codes such as CST PARTICLE STUDIO® for a benchmark problem with cylindrical geometry. Since exact analytical formulae are available, the obtained numerical results will be compared. Special attention is paid towards the representation of the particle beam as the source of the EM fields and conductive losses.