First experimental results for high Tc magnetron sputtering on the working surface of RF accelerating cavities

The first experimental results on high Tc magnetron sputtering on the working surface of galvano-plastic copper with use of the buffer layers (Ag, Ni, Al, Al-Cu) are presented. Copper shells of SC cavities with complicated geometry of the ''TESLA-shape'' type is executed by the galvano-plastic forming method. The SC films on the base of Y-Ba-Cu-O put by the method planar or axial magnetron sputtering. The first results of measurements of sample and cavities parameters high Tc / copper basis are discussed. (author)