The Surface Roughness Wakefield Effect
نویسندگان
چکیده
In the Linear Colliders FEL projects ultra short bunches are foreseen to be used. In addition to usual wakefields, coming from irregularities in the chamber, these bunches excite fields in transporting lines and undulators due to the surface roughness. This effect can be large for the extruded tubes, usually used in accelerators. Based on computer results it is shown, that the roughness wakefield effect can be described by a simple model for the monopole and dipoles wakefields of a tube with thin dielectric coating.
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