Document Type

Conference Paper

Publication Date




Publication Title

Proceedings of the 29th Linear Accelerator Conference



Conference Name

29th Linear Accelerator Conference, Beijing, China, 16-21 September 2018


RF superconducting (SRF) cavities with two beam pipes have been proposed in the past for energy recovery linac applications. The relatively complex geometry of those cavities presented a serious challenge for fabrication and surface processing. The main concerns have now been overcome with the fabrication and successful RF testing of a new elliptical twin-axis cavity proposed by Jefferson Lab (JLab) and optimized by the Center for Accelerator Science (CAS) at Old Dominion University (ODU) in the framework of a DoE accelerator stewardship program. The cavity design provides uniform accelerating or decelerating fields for both beams. This paper describes the cavity design, fabrication experience, and the first cold RF test results and explores potential applications especially for JLab’s EIC (JLEIC).


Published under the terms of the Creative Commons Attribution 3.0 International 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

Park, H., Silva, S. D., Delayen, J. R., Hutton, A., & Marhauser, F. (2018). First test results of superconducting twin axis cavity for ERL applications. 29th Linear Accelerator Conference, Beijing, China, 16-21 September 2018.


0000-0002-4809-9439 (De Silva)