Surface Studies of Nb3Sn Coated Samples Prepared under Different Coating Conditions
| Autor: | Pudasaini, Uttar, Eremeev, Grigory, Kelley, Michael, Reece, Charles, Tuggle, James |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: | |
| DOI: | 10.18429/jacow-srf2017-thpb069 |
| Popis: | The promise of better performance and significant cost reduction make Nb3Sn-coated Nb SRF cavities an attractive option when compared to traditional Nb SRF cavities. Historically, the vapor diffusion technique for coating Nb cavities with Nb3Sn has proven to be the most successful, and is currently practiced in several research facilities with minor variations. Using modern characterization tools, we examined the Nb3Sn coating prepared in different systems and/or under different conditions. Identically prepared high RRR (~ 300) Nb samples were coated using existing standard protocols at different coating facilities. The microstructure and composition of Nb3Sn coatings were found to be similar when examined with scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). Atomic force microscopy (AFM) was performed on each sample and the topographies of the samples were then compared in terms of power spectral densities (PSDs). Secondary ion mass spectrometry (SIMS) depth profiles revealed trace amounts of Ti in some of the samples. Proceedings of the 18th Int. Conf. on RF Superconductivity, SRF2017, Lanzhou, China |
| Databáze: | OpenAIRE |
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