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Dolgashev, V.A.

Paper Title Page
WEPLS085 Study of RF Breakdown in Normal Conducting Structures with Various Geometries and Materials 0
 
  • V.A. Dolgashev, S.G. Tantawi
    SLAC, Menlo Park, California
 
  RF breakdown is one of the major factors determining performance of high power rf components, rf sources and accelerating structures. We study the breakdown in 11 GHz high gradient waveguides at rf powers reaching 300 MW. We tested rectangular waveguides of two geometries which have increased surface electric and magnetic fields in comparison with a standard WR90 waveguide. We used copper, gold, molybdenum, and stainless steel as material for the waveguides. We observe rf parameters, X-rays and visible light from breakdown events. We report the results of the conditioning of these waveguides and compare these results.