Document Type

Conference Paper

Publication Date




Publication Title

Proceedings of the 21st International Conference on RF Superconductivities



Conference Name

21st International Conference on RF Superconductivity, June 25-30, 2023, Grand Rapids, Michigan


Crab cavities, operating at 197 MHz and 394 MHz respectively, will be used to compensate the loss of luminosity due to a 25 mrad crossing angle at the interaction point in the Electron Ion Collider (EIC). Both crab cavities are of the RF Dipole (RFD) shape. To meet the machine design requirements, there are a few important cavity design considerations that need to be addressed. First, to achieve stable cavity operation at the design voltages, cavity geometry details must be optimized to suppress potential multipacting. Incorporating strong HOM damping in the cavity design is required for the beam stability and quality. Furthermore, due to the finite pole width, the multipole fields, especially the sextupole and the decapole terms, need to be minimized to maintain an acceptable beam dynamic aperture. This paper will present the RF optimization details of the 197 MHz cavity.


© 2023 by JACoW.

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Original Publication Citation

Li, Z., De Silva, S. U., Delayen, J. R., Rimmer, R. A., Wu, Q., Xiao, B., & Xu, W. (2023) EIC 197 MHz crab cavity RF optimization. In K. Saito, T. Xu, N. Sakamoto, Volker R. W. Schaa, & Paul Thomas (Eds.), Proceedings of the 21st International Conference on RF Superconductivity (pp. 579-583). JACoW.


0000-0002-4809-9439 (De Silva)