Document Type
Conference Paper
Publication Date
2021
DOI
10.18429/JACoW-SRF2021-WEPFDV008
Publication Title
Proceedings of the 20th International Conference on RF Superconductivity
Pages
576-580
Conference Name
20th International Conference on RF Superconductivity, June 27- July 2, 2021, East Lansing, Michigan
Abstract
Superconducting radio-frequency (SRF) cavities made of high-purity bulk niobium are widely used in modern particle accelerators. The development of metallic outer coatings with high thermal conductivity would have a beneficial impact in terms of improved thermal stability, reduced material cost and for the development of conduction-cooled, cryogenic-free SRF cavities. Several high-purity, fine-grain Nb samples have been coated with 2’4 mm thick copper by electroplating. Measurements of the thermal conductivity of the bimetallic Nb/Cu samples in the range 2’7 K showed values of the order of 1 kW/(m K) at 4.3 K. Very good adhesion between copper and niobium was achieved by depositing a thin Cu layer by cold spray on the niobium, prior to electroplating the bulk Cu layer.
Rights
© 2021 by JACoW.
Published under the terms of a Creative Commons Attribution 4.0 International (CC BY 4.0) License.
Original Publication Citation
Ciovati, G., Dhakal, P., Parajuli, I. P., Walive Pathiranage, M. R. P., & Saeki, T. (2021). Thermal conductivity of electroplated copper onto bulk niobium at cryogenic temperatures. In K. Saito, T. Xu, N. Sakamoto, A. Lesage, & V. R. W. Schaa (Eds.), Proceedings of the 20th International Conference on RF Superconductivity (pp. 576-580). JACoW Publishing. https://doi.org/10.18429/JACoW-SRF2021-WEPFDV008
ORCID
0000-0001-9316-7704 (Ciovati)
Repository Citation
Ciovati, G.; Dhakal, P.; Parajuli, I.; Pathiranage, M. R. P.; and Saeki, T., "Thermal Conductivity of Electroplated Copper Onto Bulk Niobium at Cryogenic Temperatures" (2021). Physics Faculty Publications. 1079.
https://digitalcommons.odu.edu/physics_fac_pubs/1079