18–26 Sept 2025
Ito International Research Center
Asia/Tokyo timezone

Initial results for CVD based growth of Nb₃Sn

MOP20
22 Sept 2025, 14:30
3h
Ito International Research Center

Ito International Research Center

Tokyo
Board: MOP20
Student Poster Presentation MC2: Fundamental SRF research and development Monday Poster Session

Speaker

Gabriel Gaitan (Cornell University)

Description

Niobium-3 tin Nb3Sn is a promising material for next-generation superconducting RF cavities due to its high critical temperature and high theoretical field limit. There is currently significant worldwide effort aiming to improve Nb3Sn growth to push this material to its ultimate performance limits. In this paper, we present the first results of deposition of Sn on different Nb samples in different orientations in our Chemical Vapor Deposition (CVD) system. We discuss imaging results for Sn on Nb substrates. We discuss CFD flow simulations and how they may be relevant to formulating a recipe for coating cavities. We describe the parameters used in the film deposition and future steps towards coating a 2.6 GHz cavity in our CVD system. We also discuss potential alternative tin precursors to improve coating uniformity and stoichiometry.

Funding Agency

This work was supported by the U.S. National Science Foundation under Award PHY-1549132, the Center for Bright Beams and by the U.S. Department of Energy under award DE-SC0024137.

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Author

Gabriel Gaitan (Cornell University)

Co-authors

Alexis Grassl (Cornell University) Caleb Middleton (Cornell University) Matthias Liepe (Cornell University) Nathan Sitaraman (Cornell University) Peter Quigley (Cornell University) Will Howes (Cornell University)

Presentation materials

There are no materials yet.