Proceedings of the 17th International Conference of RF Superconductivity
17th International Conference on RF Superconductivity, Whistler, British Columbia, Canada
Superconducting RF cavities made of bulk Nb has reached a breakdown field of about 200 mT which is close to the superheating field for Nb. As it was theoretically shown a multilayer coating can be used to enhance the breakdown field of SRF cavities. The simple example is a superconductor-insulator-superconductor (S-I-S), for example bulk niobium (S) coated with a thin film of insulator (I) followed by a thin layer of a superconductor (S) which could be a dirty niobium. To verify such an enhancement in a presence of a DC magnetic field at 4.2 K a simple experimental facility was designed, built and tested in ASTeC. The details of experimental setup and results of the measurements will be shown at the conference.
Original Publication Citation
Malyshev, O., Dumbell, K., Gurevich, A., Gurran, L., Pattalwar, N., Pattalwar, S., & Valizadeh, R. (2015, December). A Facility for Magnetic Field Penetration Measurements on Multilayer S-I-S Structures. In Proceedings of the 17th International Conference on RF Superconductivity (SRF2015), Whistler, BC, Canada, Sept. 13-18, 2015 (pp. 716-719).
Malyshev, Oleg B.; Gurran, Lewis; Pattalwar, Shrikant; Pattalwar, Ninad; Dumbell, Keith D.; Valizadeh, Reza; and Gurevich, Alex, "A Facility For Magnetic Field Penetration Measurements on Multilayer S-I-S Structures" (2015). Physics Faculty Publications. 264.