Document Type

Conference Paper

Publication Date




Publication Title

Proceedings of the 12th International Particle Accelerator Conference




A dual energy storage ring designed for beam cooling consists of two closed rings with significantly different energies: the cooling and damping rings. These two rings are connected by an energy recovering superconducting RF structure that provides the necessary energy difference. In our design, the RF acceleration has a main linac and harmonic cavities both running at crest that at first accelerates the beam from low energy E_{L} to high energy E_{H} and then decelerates the beam from E_{H} to E_{L} in the next pass. The purpose of the harmonic cavities is to extend the bunch length in a dual energy storage ring as such a longer bunch length may be very useful in a cooling application. Besides these cavities, a bunching cavity running on zero-crossing phase is used outside of the common beamline to provide the necessary longitudinal focusing for the system. In this paper, we present a preliminary lattice design along with the fundamental beam dynamics study in such a dual energy storage ring.


Copyright © 2021 by JACoW

Published under the terms of the Creative Commons Attribution 3.0 International License (CC BY 3.0). Any further distribution of this work must maintain attribution to the authors, the published article's title, publisher, and DOI.


Funding: Work supported by the U.S. Department of Energy, Office of Science, and Office of Nuclear Physics under Contracts DE-AC05-06OR23177 and DE-AC02-06CH11357. / Jefferson Lab EIC Fellowship2020.

Original Publication Citation

Dhital, B., Derbenev, Y. S., Douglas, D., Hutton, A., Krafft, G. A., Lin, F., Morozov, V. S., & Zhang, Y. (2021). Beam dynamics study in a dual energy storage ring for ion beam cooling*. In L. Liu, J. Byrd, R. Neuenschwander, R. Picoreti, & V.R.W. Schaa (Eds.), Proceedings of the 12th International Particle Accelerator Conference (pp. 1290-1293). JACoW.


0000-0002-0328-5828 (Krafft)