Document Type

Conference Paper

Publication Date


Publication Title

Proceedings of the 7th International Particle Accelerator Conference



Conference Name

7th International Particle Accelerator Conference (IPAC 2016)


The performance of superconducting RF cavities made of bulk Nb is limited by a breakdown field of Bp ≈200 mT, close to the superheating field for Nb. A potentially promising solution to enhance the breakdown field of the SRF cavities beyond the intrinsic limits of Nb is a multilayer coating suggested in [1]. In the simplest case, such a multilayer may be a superconductor-insulator-superconductor (S-I-S) coating, for example, bulk niobium (S) coated with a thin film of insulator (I) followed by a thin layer of another superconductor (S) which could be e.g. dirty niobium [2]. Here we report the first results of our measurements of field penetration in Nb thin films and Nb-AlN-Nb multilayer samples at 4.2 K using the magnetic field penetration facility designed, built and tested in ASTeC.


The work of Old Dominion University was supported by the US Department of Energy under contract No. DE-SC0010081

Copyright © 2016 by the Author(s).

Published under a Creative Commons Attribution 3.0 unported license.

Original Publication Citation

Malyshev, O., Gurevich, A., Pattalwar, S., Valizadeh, R., Gurran, L., Pattalwar, N., & Dumbell, K. (2016). First results of magnetic field penetration measurements on multilayer SIS structures. In Proceedings of the 7th International Particle Accelerator Conference, Busan, Korea, May 8-13, 2016 (pp. 2245-2247).


0000-0003-0759-8941 (Gurevich)