Abstract
Superconductor magnesium diboride is considered one of the viable materials to substitute bulk niobium for superconducting radio frequency cavities. Utilizing a coating on the inner wall of a copper cavity will allow operation at higher temperatures (20–25 K) than Nb cavities due to the high transition temperature of (39 K) and the high thermal conductivity of Cu. In this paper, we present results of coating on Cu tubes with similar dimensions to a 3 GHz cavity, as the first step towards coating the actual cavity, using the hybrid physical chemical vapor deposition technique. The results show successful coating of a uniform layer on the inner wall of the Cu tubes with as high as 37 K.
- Received 18 August 2017
DOI:https://doi.org/10.1103/PhysRevAccelBeams.20.102002
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Published by the American Physical Society
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SRF2017 Conference Edition
A collection of articles that expand upon original research presented at the 18th International Conference on RF Superconductivity (SRF 2017) (17-21 July 2017, Lanzhou, China).