Document Type

Conference Paper

Publication Date




Publication Title

Proceedings of the 5th International Particle Accelerator Conference



Conference Name

5th International Particle Accelerator Conference (IPAC 2014)


The LCLS-II project currently under development is designed to accelerate electron bunches up to 4 GeV and transport them to one of two FEL undulators located more than 2 km downstream of the end of the LCLS-II linac. The upgrade requires a spreader system to separate the baseline electron bunches and transport them to two undulator lines or a local dump. Fast bipolar kickers (FK) or transverse electric rf deflectors (RFD) are considered as fast-switching devices (FSD). In the RFD approach described here three design options operating at 325 MHz are studied including a superconducting rf-dipole cavity, a normal conducting rf-dipole cavity, and a normal conducting 4-rod cavity. Optional compact splitting schemes involving a combination of vertical and horizontal initial deflections are addressed


Copyright © 2014 by JACoW, Geneva, Switzerland.

Published under a Creative Commons Attribution 3.0 unported license.

Original Publication Citation

De Silva, S., Delayen, J., Doolittle, L., Emma, P., Olave, R., Placidi, M., & Ratti, A. (2014). A Compact Beam Spreader using RF Deflecting Cavities for the LCLS-II. In Proceedings of the 5th International Particle Accelerator Conference (IPAC'14), Dresden, Germany, June 15-20, 2014 (pp. 2666-2668).


0000-0002-4809-9439 (De Silva), 0000-0002-1110-146X (Placidi), 0000-0002-8222-8740 (Delayen)