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Development of thin films for superconducting RF cavities

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conference contribution
posted on 30.06.2015, 14:48 by Stuart Wilde, Reza Valizadeh, O.B. Malyshev, A. Hannah, D.O. Malyshev, S. Pattalwar, G.B.G. Stenning, Boris ChescaBoris Chesca
Superconducting coatings for superconducting radio frequency (SRF) cavities is an intensively developing field that should ultimately lead to acceleration gradients better than those obtained by bulk Nb RF cavities. ASTeC has built and developed experimental systems for superconducting thin-film deposition, surface analysis and measurement of Residual Resistivity Ratio (RRR). Nb thin-films were deposited by magnetron sputtering in DC or pulsed DC mode (100 to 350 kHz with 50% duty cycle) with powers ranging from 100 to 600 W at various temperatures ranging from room temperature to 800 °C on Si (100) substrates. The first results gave RRR in the range from 2 to 22 with a critical temperature Tc ≈ 9.5 K. Scanning electron microscopy (SEM), x-ray diffraction (XRD), electron back scattering diffraction (EBSD) and DC SQUID magnetometry revealed significant correlations between the film structure, morphology and superconducting properties.

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  • Physics

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IPAC 2014: Proceedings of the 5th International Particle Accelerator Conference

Pages

2406 - 2408

Citation

WILDE, S. ... et al, 2014. Development of thin films for superconducting RF cavities. IN: Proceedings of the 5th International Particle Accelerator Conference (IPAC14), 15th-20th June 2014, Dresden, Germany. JACoW, pp. 2406 - 2408

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JACoW / © The Authors

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VoR (Version of Record)

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This work is made available according to the conditions of the Creative Commons Attribution 3.0 Unported (CC BY 3.0) licence. Full details of this licence are available at: http://creativecommons.org/licenses/by/3.0/

Publication date

2014

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This is an Open Access article published under the the terms of the Creative Commons Attribution 3.0 Licence(http://creativecommons.org/licenses/by/3.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

ISBN

9783954501328

Language

en

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