Document Type

Conference Paper

Publication Date




Publication Title

Proceedings of the 6th International Particle Accelerator Conference



Conference Name

6th International Particle Accelerator Conference (IPAC 2015)


A 400-MHz compact RF dipole (RFD) crab cavity design was jointly developed by Old Dominion University and SLAC under the support of US LARP program for the LHC HiLumi upgrade. The RFD cavity design is consisted of a rounded-square tank and two ridged deflecting poles, operating with a TE11-like dipole mode, which is the lowest mode of the cavity. A prototype RFD cavity is being manufactured and will be tested on the SPS beam line at CERN. The coaxial fundamental Power Coupler (FPC) of the prototype cavity was re-optimized to minimizing the power heating on the coupler internal antenna. A hi-pass filter HOM damping coupler was developed to achieve the required wakefield damping while maintaining a compact size to fit into the beam line space. In this paper, we will discuss the details of the RF optimization and tolerance analyses of the FPC and HOM couplers.


Work partially supported by the US DOE through the US LHC Accelerator Research Program (LARP) and by US DOE under contract number DE-AC02-76SF00515

Copyright © 2015-2018 The Author(s).

Published under a Creative Commons Attribution 3.0 unported license.

Original Publication Citation

Li, Z., Delayen, J. R., Park, H., Olave, R., & De Silva, S. (2015). FPC and Hi-Pass Filter HOM Coupler Design for the RF Dipole Crab Cavity for the LHC HiLumi Upgrade. In Proceedings of the 6th International Particle Accelerator Conference, Richmond, VA, May 3-8, 2015 (pp. 3492-3495).


0000-0002-8222-8740 (Delayen), 0000-0002-4809-9439 (De Silva)