0000-0001-7212-3550 (Tiskumara), 0000-0002-8222-8740 (Delayen)
College of Sciences
In the modern SRF research, Thin films coated niobium cavities are used for the low cost and increased quality factor. Among the potential thin film materials applied on the niobium, performances demonstrated by the Nb3Sn cavities makes this material attractive for SRF accelerator applications giving higher critical temperature and higher accelerating gradients. While the majority of research efforts are currently focused on the development of elliptical single-cell and multi-cell cavities, the potential of this material is evident to other cavity types, which may have complex geometries. We are working towards the development of Nb3Sn-coated Half-wave resonator and twin axis cavity at JLab. The Half-wave resonator with a coaxial structure provides data across different frequencies of interest useful for particle accelerators worldwide, whereas the twin axis cavity with two accelerating axes has been proposed for the Energy Recovery Linac (ERL) applications. With their advanced geometries, larger surface area, increased number of ports and hard to reach areas, the usual coating approach must be evaluated and may need to be adjusted. We are commissioning a secondary Sn source in the coating system and will modify the current coating protocol to coat different complex cavity models. This poster aims the current updates on such modifications and results we could obtain so far.
Nb3Sn, Physics, Superconductivity, SRF cavity
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Tiskumara, Jayendrika; Pudasaini, Uttar; Eremeev, Grigory; Reece, Charlie; and Delayen, Jean, "Nb3Sn Coating of Complex SRF Cavity Structures" (2021). College of Sciences Posters. 15.