Document Type

Conference Paper

Publication Date




Publication Title

Proceedings of the 12th International Particle Acceleator Conference



Conference Name

12th International Particle Accelerator Conference


A Superconducting twin axis cavity consisting of two identical beam pipes that can accelerate and decelerate beams within the same structure has been proposed for the Energy Recovery Linac (ERL) applications. There are two niobium twin axis cavities at JLab fabricated with the intention of later Nb₃Sn coating and now we are progressing to coat them using vapor diffusion method. Nb₃Sn is a potential alternate material for replacing Nb in SRF cavities for better performance and reducing operational costs. Because of advanced geometry, larger surface area, increased number of ports and hard to reach areas of the twin axis cavities, the usual coating approach developed for typical elliptical single-axis cavities must be evaluated and requires to be adjusted. In this contribution, we report the first results from the coating of a twin axis cavity and discuss current challenges with an outlook for the future.


Published by JACoW Publishing under the terms of the Creative Commons Attribution 3.0 unported license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI.

Original Publication Citation

Tiskumara, J.K., De Silva, S.U., Delayen, J.R., Park, H. Delayen, J.R., Park, H. Pudasaini, U., Reece, C.E., & Eremeev, G.V. (2021). Nb₃Sn coating of twin axis cavity for accelerator applications. In L. Lin, J.M. Byrd, R. Neuenschwander, R. Picoreti, & V.R.W. Schaa (Eds.), Proceedings of the 12th International Particle Accelerator Conference (pp. 1175-1178). Joint Accelerator Conferences Website.


0000-0001-7212-3550 (Tiskumara), 0000-0002-4809-9439 (De Silva)