Document Type

Conference Paper

Publication Date




Publication Title

Proceedings of the 19th International Conference on RF Superconductivity



Conference Name

SRF2019: 19th International Conference on RF Superconductivity, June 30-July 5, 2019, Dresden, Germany


Trapped magnetic vortices are one of the leading sources of residual losses in SRF cavities. Mechanisms of flux pinning depend on the materials treatment and cool-down conditions. A magnetic field scanning system using flux-gate magnetometers and Hall probes has been designed and built to allow measuring the local magnetic field of trapped vortices normal to the outer surface of 1.3 GHz single-cell SRF cavities at cryogenic temperatures. Such system will allow inferring the key information about the distribution and magnitude of trapped flux in the SRF cavities for different material, surface preparations and cool-down conditions.


Published by JACoW Publishing under the terms of the Creative Commons Attribution 3.0 Unported license (CC BY 3.0). Any further distribution of this work must maintain attribution to the authors, the published article's title, publisher, and DOI.

Original Publication Citation

Parajuli, I. P., Ciovati, G., Clemens, W. A., Delayen, J. R., Nice, J., & Gurevich, A. V. (2019). Design and commissioning of magnetic field scanning system for SRF cavities. In P. Michl, A. Arnold, and V.R.W. Schaa (Eds.), Proceedings of the 19th International Conference on RF Superconductivity (pp. 547-549). JACoW.


0000-0002-0873-2068 (Parajuli), 0000-0001-9316-7704 (Ciovati), 0000-0003-0759-8941 (Gurevich)