Author: Stupakov, G.V.
Paper Title Page
WEPPR054 Calculation of Coherent Wiggler Radiation using Eigenfunction Expansion Method 3048
 
  • D. Zhou, Y.H. Chin, K. Ohmi
    KEK, Ibaraki, Japan
  • G.V. Stupakov
    SLAC, Menlo Park, California, USA
 
  An analytic method originated by Y. H. Chin* was extended to calculate the electromagnetic fields and the longitudinal impedance due to coherent wiggler radiation (CWR) in a rectangular chamber. The method used dyadic Green functions based on eigenfunction expansion method in electromagnetic theory and was rigorous for the case of straight chamber. We re-derived the theory and did find the full expressions for the longitudinal impedance of a wiggler with finite length. With shielding of chamber, the CWR impedance indicated resonant properties which were not seen in the theory for CWR in free space.
* Y.H. Chin, LBL-29981, 1990.