| Title |
Optimizing Growth of Niobium-3 Tin Through Pre-nucleation Chemical Treatments |
| Authors |
- S.G. Arnold, G. Gaitan, M. Liepe, L. Shpanipresenter, Z. Sun
Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA
- T. Arias, N. Sitaraman
Cornell University, Ithaca, New York, USA
|
| Abstract |
Nb₃Sn is a promising alternative material for SRF cavities that is close to reaching practical applications. To date, one of the most effective growth methods for this material is vapor diffusion, yet further improvement is needed for Nb₃Sn to reach its full potential. The major issues faced by vapor diffusion are tin depleted regions and surface roughness, both of which lead to impaired performance. Literature has shown that the niobium surface oxide plays an important role in the binding of tin to niobium. In this study, we performed various chemical treatments on niobium samples pre-nucleation to enhance tin nucleation. We quantify the effect that these various treatments had through scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). These methods reveal information on tin nucleation density and uniformity, and a thin tin film present on most samples, even in the absence of nucleation sites. We present our findings from these surface characterization methods and introduce a framework for quantitatively comparing the samples. We plan to apply the most effective treatment to a cavity and conduct an RF test soon.
|
| Funding |
This work was supported by the U.S. National Science Foundation under award PHY-1549132, the Center for Bright Beams. |
| Paper |
download MOPMB093.PDF [5.913 MB / 5 pages] |
| Poster |
download MOPMB093_POSTER.PDF [1.118 MB] |
| Cite |
download ※ BibTeX
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※ EndNote |
| Conference |
SRF2023 |
| Series |
International Conference on RF Superconductivity (21st) |
| Location |
Grand Rapids, MI, USA |
| Date |
25-30 June 2023 |
| Publisher |
JACoW Publishing, Geneva, Switzerland |
| Editorial Board |
Kenji Saito (FRIB, MSU, East Lansing, MI, USA); Ting Xu (FRIB, MSU, East Lansing, MI, USA); Naruhiko Sakamoto (RIKEN, Wako, Japan); Volker R.W. Schaa (GSI, Darmstadt, Germany); Paul W. Thomas (FRIB, MSU, East Lansing, MI, USA) |
| Online ISBN |
978-3-95450-234-9 |
| Online ISSN |
2673-5504 |
| Received |
21 June 2023 |
| Revised |
22 June 2023 |
| Accepted |
26 June 2023 |
| Issue Date |
26 July 2023 |
| DOI |
doi:10.18429/JACoW-SRF2023-MOPMB093 |
| Pages |
337-341 |
| Copyright |
 Published by JACoW Publishing under the terms of the Creative Commons Attribution 4.0 International license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI. |
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