Document Type

Conference Paper

Publication Date


Publication Title

Proceedings of the 17th International Conference on RF Superconductivity



Conference Name

17th International Conference on RF Superconductivity, Whistler, British Columbia, Canada


The High-Luminosity upgrade for the LHC relies on a set of RF Crab Cavities for reaching its goals. Two parallel concepts, the Double Quarter Wave (DQW) and the RF Dipole (RFD), are going through a comprehensive design process along with preparation of fabrication in view of extensive tests with beam in SPS. High Order Modes (HOM) couplers are critical in providing damping in RF cavities for operation in accelerators. HOM prototyping and fabrication have recently started at CERN. In this paper, an overview of the final shape is provided along with an insight in the mechanical and thermal analyses performed to validate the design of these critical components. Emphasis is also given to test campaigns, material selection, prototyping and initial fabrication that are aimed at fulfilling the highly demanding tolerances of the couplers.


Published under a Creative Commons Attribution 3.0 unported license.

Original Publication Citation

Zanoni, C., Atieh, S., Aviles Santillana, I., Belomestnykh, S., Burt, G., Calaga, R.... & Delayen, J. (2015, December). Engineering Design and Prototype Fabrication of HOM Couplers for HL-LHC Crab Cavities. In Proceedings of the 17th International Conference on RF Superconductivity (SRF2015), Whistler, BC, Canada, Sept. 13-18, 2015 (pp. 1279-1283).


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