| Title |
Materials Design for Superconducting RF Cavities: Electroplating Sn, Zr, and Au onto Nb and and Chemical Vapor Deposition |
| Authors |
- Z. Sun, M. Liepe, T.E. Oseroffpresenter
Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA
- Z. Baraissov, D.A. Muller, M.O. Thompson
Cornell University, Ithaca, New York, USA
|
| Abstract |
Materials scientists seek to contribute to the development of next-generation superconducting radio-frequency (SRF) accelerating cavities. Here, we summarize our achievements and learnings in designing advanced SRF materials and surfaces, including Nb₃Sn [1¿3], ZrNb(CO) [4, 5], and Au/Nb surface design [6,7]. Our efforts involve electrochemical synthesis, phase transformation, and surface chemistry, which are closely coupled with superconducting properties, SRF performance, and engineering considerations. We develop electrochemical processes for Sn, Zr, and Au on the Nb surface, an essential step in our investigation for producing high-quality Nb₃Sn, ZrNb(CO), and Au/Nb structures. Additionally, we design a custom chemical vapor deposition system to offer additional growth options. Notably, we find the second-phase NbC formation in ZrNb(CO) and in ultra-high-vacuum baked or nitrogen-processed Nb. We also identify low-dielectric-loss ZrO2 on Nb and NbZr(CO) surfaces. These advancements provide materials science approaches dealing with fundamental and technical challenges to build high-performance, multi-scale, robust SRF cavities for particle accelerators and quantum applications.
|
| Funding |
This work was supported by the U.S. National Science Foundation under Award PHY-1549132, the Center for Bright Beams. |
| Paper |
download TUPTB006.PDF [0.414 MB / 4 pages] |
| Cite |
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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 |
30 June 2023 |
| Revised |
11 August 2023 |
| Accepted |
20 August 2023 |
| Issue Date |
21 August 2023 |
| DOI |
doi:10.18429/JACoW-SRF2023-TUPTB006 |
| Pages |
401-404 |
| 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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