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PreprintCC BY 4.0arXiv

A pathway to improve Nb3Sn for SRF accelerator cavities via Zr inclusion

  • M. Tripathi
  • M. S. Shakel
  • J. Lee
  • H. E. Elsayed-Ali
  • S. Posen
  • G. V. Eremeev
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Abstract

Nb3Sn has the potential to exceed the performance of niobium-based superconducting radio-frequency (SRF) cavities, both in particle accelerators and in high-Q0 cavities operating in multi-tesla magnetic fields for axion dark matter searches. We studied how the incorporation of Zr into the Nb3Sn matrix by co-sputtering affects the microstructure and superconducting properties of Nb3Sn films. As the atomic fraction of Zr increased, the surface morphology improved and the bulk and surface void densities decreased. At the optimal Zr content, the superconducting properties improved and a thinner surface niobium oxide formed. These results identify co-sputtered Nb3Sn:Zr as a promising material to advance the performance limits of SRF cavities.

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Cite

BibTeXRIS
BibTeX
@misc{tripathi2026pathway,
  title = {{A pathway to improve Nb$_3$Sn for SRF accelerator cavities via Zr inclusion}},
  author = {M. Tripathi and M. S. Shakel and J. Lee and H. E. Elsayed-Ali and S. Posen and G. V. Eremeev},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.36479},
  eprint = {2610.36479},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.36479},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - A pathway to improve Nb_3Sn for SRF accelerator cavities via Zr inclusion
AU  - M. Tripathi
AU  - M. S. Shakel
AU  - J. Lee
AU  - H. E. Elsayed-Ali
AU  - S. Posen
AU  - G. V. Eremeev
PY  - 2026
DA  - 2026/10/27
PB  - arXiv
DO  - 10.48550/arxiv.2610.36479
UR  - https://arxiv.org/abs/2610.36479
AB  - Nb_3Sn has the potential to exceed the performance of niobium-based superconducting radio-frequency (SRF) cavities, both in particle accelerators and in high-Q_0 cavities operating in multi-tesla magnetic fields for axion dark matter searches. We studied how the incorporation of Zr into the Nb_3Sn matrix by co-sputtering affects the microstructure and superconducting properties of Nb_3Sn films. As the atomic fraction of Zr increased, the surface morphology improved and the bulk and surface void densities decreased. At the optimal Zr content, the superconducting properties improved and a thinner surface niobium oxide formed. These results identify co-sputtered Nb_3Sn:Zr as a promising material to advance the performance limits of SRF cavities.
ER  -