Speaker
Ruggero Vaglio
(NA)
Description
Recently, the improvement of RF superconducting cavities performances has motivated a considerable research effort to elucidate the effect of trapped magnetic flux. Here we will show that by introducing a non-linear pinning force in the Gittleman-Rosenblum equations for the RF power dissipation due to an external trapped magnetic field in a superconductor, we can describe most of the common experimental features. In particular, the linear dependence on the RF field amplitude , the proportionality between the RF-field-dependent and independent parts and , and the frequency dependence of stem naturally from this approach.
Primary author
Ruggero Vaglio
(NA)
Co-author
Sergio Calatroni
(CERN)
