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 HL-LHC project aims at increasing the LHC luminosity by a factor 10 beyond the design value. The installation of a set of RF Crab Cavities to increase bunch crossing angle is one of the key upgrades of the program. Two concepts, Double Quarter Wave (DQW) and RF Dipole (RFD) have been proposed and are being produced in parallel for test in the SPS beam before the next long shutdown of CERN accelerator’s complex. In the retained concept, two cavities are hosted in one single cryomodule, providing thermal insulation and interfacing with RF coupling, tuning, cryogenics and beam vacuum. This paper overviews the main design choices for the cryomodule and its different components, which have the goal of optimizing the structural, thermal and electro-magnetic behavior of the system, while respecting the existing constraints in terms of integration in the accelerator environment. Prototyping and testing of the most critical components, manufacturing, preparation and installation strategies are also described.


Published under a Creative Commons Attribution 3.0 unported license.

Original Publication Citation

Carra, F., Amorim Carvalho, A., Artoos, K., Atieh, S., Aviles Santillana, I., Belomestnykh, S..... & Calaga, R. (2015, December). Crab Cavity and Cryomodule Development for HL-LHC. In Proceedings of the 17th International Conference on RF Superconductivity (SRF2015), Whistler, BC, Canada, Sept.13-18, 2015 (pp.1460-1466).


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