CONSIDERATION ON SHAPE DEPENDENCE OF WAKE-FIELD ACCELERATORS

Wake fields are typical transient electromagnetic phenomena, which require any numerical methods for the analysis, because experimental observation of the phenomena is almost impossible. Then, Boundary Element Method(BEM) is suitable for the wake field analysis, because the fields are homogeneous and mesh generation is easer than FDM or FEM type numerical scheme. From this point of view, this paper considers a method of BE analysis of wake fields. Especially, it is shown that the Dirichlet type boundary condition can be used for perfect conductor surface when scalar and vector potentials are used as unknown variables. And then, shape dependence of wake fields accelerator are discussed using the BEM.