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Title |
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| WEIBA01 |
Surface Engineering by ALD for Superconducting RF Cavities |
615 |
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- Y. Kalboussi, C.Z. Antoine, M. Baudrier, Q. Bertrand, C. Boulch, B. Delatte, G. Jullien, L. Maurice, Th. Proslier, P. Sahuquet, T.V. Vacher
CEA-IRFU, Gif-sur-Yvette, France
- M. Asaduzzaman, T. Junginger
UVIC, Victoria, Canada
- M. Asaduzzaman
TRIUMF, Vancouver, Canada
- D. Dragoe
ICMMO, Orsay, France
- F. Éozénou
CEA-DRF-IRFU, France
- N. Lochet
CEA, DES, Université Paris-Saclay, Gif-sur-Yvette, France
- D. Longuevergne, T. Pépin-Donat
Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
- F. Miserque
CEA, LECA, Université Paris-Saclay, Gif-sur-Yvette, France
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Atomic Layer Deposition is a synthesis method that enable a unique control of thin films chemical composition and thickness over complex shape objects such as SRF cavities. This level of control opens the way to new surface treatments and to study their effect on RF cavity performances. We will present coupon and, in some cases, preliminary cavity results, from various surface engineering routes based on the deposition of thin oxides and nitrides films combined with post annealing treatments and study their interactions with the niobium. Three main research directions will be presented: 1/ replacing the niobium oxides by other surface layers (Al₂O₃, Y2O3, MgO) and probe their effect on the low and high field performances, 2/ doping with N and combine approaches 1/ and 2/ and finally 3/ optimize the superconducting properties of NbTiN multilayers on Nb and Sapphire.
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Slides WEIBA01 [13.613 MB]
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| DOI • |
reference for this paper
※ doi:10.18429/JACoW-SRF2023-WEIBA01
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| About • |
Received ※ 06 July 2023 — Revised ※ 12 August 2023 — Accepted ※ 19 August 2023 — Issue date ※ 19 August 2023 |
| Cite • |
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| WEIXA06 |
Recent Advances in Metallographic Polishing for SRF Application |
646 |
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- O. Hryhorenko
JLab, Newport News, Virginia, USA
- C.Z. Antoine, F. Éozénou, Th. Proslier
Université Paris-Saclay, CEA, Gif-sur-Yvette, France
- T. Dohmae
KEK, Ibaraki, Japan
- S. Keckert, J. Knobloch, O. Kugeler
HZB, Berlin, Germany
- D. Longuevergne
Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
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Funding: ENSAR-2 under grant agreement N° 654002. IFAST under Grant Agreement No 101004730. The U.S. Department of Energy, Office of Science, Office of Nuclear Physics under contract DE-AC05-06OR23177.
This talk is an overview of the metallographic polishing R&D program covering Niobium and Copper substrates treatment for thin film coating as an alternative fabrication pathway for 1.3 GHz elliptical cavities. The presented research is the result of a collaborative effort between IJCLab, CEA/Irfu, HZB, and KEK in order to develop innovative surface processing and cavity fabrication protocols capable of meeting stringent requirements for SRF surfaces, including the reduction of safety risks and ecological footprint, enhancing reliability, improving the surface roughness, and potentially allowing cost reduction. The research findings will be disclosed.
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Slides WEIXA06 [7.469 MB]
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| DOI • |
reference for this paper
※ doi:10.18429/JACoW-SRF2023-WEIXA06
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| About • |
Received ※ 16 June 2023 — Revised ※ 27 June 2023 — Accepted ※ 28 June 2023 — Issue date ※ 14 July 2023 |
| Cite • |
reference for this paper using
※ BibTeX,
※ LaTeX,
※ Text/Word,
※ RIS,
※ EndNote (xml)
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