Apparatus and process for passivating an SRF cavity

摘要

An apparatus and process for the production of a niobium cavity exhibiting high quality factors at high gradients is provided. The apparatus comprises a first chamber positioned within a second chamber, an RF generator and vacuum pumping systems. The process comprises placing the niobium cavity in a first chamber of the apparatus; thermally treating the cavity by high temperature in the first chamber while maintaining high vacuum in the first and second chambers; and applying a passivating thin film layer to a surface of the cavity in the presence of a gaseous mixture and an RF field.;Further a niobium cavity exhibiting high quality factors at high gradients produced by the method of the invention is provided.

主权项

1. A process for the production of a niobium cavity exhibiting high quality factors at high gradients comprising:
a. placing the niobium cavity in a first chamber housed within a second chamber wherein the first and second chambers are adjacent an RF field generator; b. thermally treating the niobium cavity by high temperature in the first chamber while maintaining high vacuum in the first and the second chambers; and c. applying a passivating thin film layer to a surface of the cavity in the presence of a gaseous mixture and an RF field.