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)


In preparation for the LHC High Luminosity upgrade, a 400 MHz crab cavity has been developed jointly at ODU/SLAC, including two higher order mode couplers designed to dampen the wakefields in order to comply with the impedance budget specified for the LHC system. During fabrication, assembly, and processing of the couplers, a number of imperfections may arise that could modify the higher order mode spectrum and the associated impedance for each mode. We present here a detailed study of the imperfections of the horizontal- and vertical- HOM couplers, and the associated allowed tolerances for manufacture, assembly and processing.


Work Supported by DOE via US LARP Program and by the High Luminosity LHC Project. Work was also supported by DOE Contract No. DE-AC0276SF00515

Copyright © 2015 by JACoW, Geneva, Switzerland.

Published under a Creative Commons Attribution 3.0 unported license.

Original Publication Citation

De Silva, S., Delayen, J., Li, Z., Olave, R. G., & Park, H. (2015). Imperfection and Tolerance Analysis of HOM Couplers for ODU/SLAC 400 MHz Crabbing Cavity. In Proceedings of the 6th International Particle Accelerator Conference, Richmond, VA, May 3-8, 2015 (pp. 3572-3574).


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