MULTIPACTOR STUDIES IN RECTANGULAR WAVEGUIDES

Experimental and numerical studies of multipactor in rectangular waveguide geometries are discussed in this paper. A new section of rectangular waveguide similar to the input coupler of the CESR-type SRF cavities has been designed to experimentally verify various multipacting suppression methods. It will also show the effects on multipactor of cryogenic cooling, as well as the effects of surface coatings and roughness, through the use of changeable sample plates. In parallel, the MAGIC PIC code has been used to simulate multipactor in rectangular waveguide geometries. Early results will be discussed