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DOE OSTI · 1989887

Electropolishing Study on Nitrogen-doped Niobium Surface

Chouhan, V.·Ring, T.·Viklund, E.·Wu, G.
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Abstract

The nitrogen doping (N-doping) process is applied to niobium (Nb) superconducting cavities to enhance their quality factors. The N-doping is followed by an electropolishing process that provides the final surface of the cavities. A controlled EP process is necessary to get the benefit of N-doping and achieve a high accelerating gradient. We have performed electropolishing of N-doped Nb surface under various conditions to understand their impact on the surface. A modified EP process was developed to obtain a smooth pit-free surface.

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Chouhan, V., Ring, T., Viklund, E., Wu, G.. 2023-07-18. Electropolishing Study on Nitrogen-doped Niobium Surface. https://www.osti.gov/biblio/1989887

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