Enhancement of the Accelerating Gradient in Superconducting Microwave Resonators

Mattia Checchin, Anna Grassellino, Martina Martinello, Sam Posen, Alexander Romanenko, John Zasadzinski, Schaa, Volker RW (Ed.), Power, Maria (Ed.), Shiltsev, Vladimir (Ed.), White, Marion (Ed.)
The accelerating gradient of superconducting resonators can be enhanced by engineering the thickness of a dirty layer grown at the cavity's rf surface. In this paper the description of the physics behind the accelerating gradient enhancement by meaning of the dirty layer is carried out by solving numerically the the Ginzburg-Landau (GL) equations for the layered system. The calculation shows that the presence of the dirty layer stabilizes the Meissner state up to the lower critical field of the
more » ... bulk, increasing the maximum accelerating gradient.
doi:10.18429/jacow-napac2016-mopob20 fatcat:ai6zr6t4pjebvexokttjqc56zy