DESIGN OF A 4 ROD CRAB CAVITY CRYOMODULE SYSTEM FOR HL-LHC

The LHC requires compact SRF crab cavities for the HLLHC and 3 potential solutions are under consideration. One option is to develop a 4 rod cavity utilising for quarter wave rods to maintain a dipole field. The cavity design has been developed including power and LOM/HOM couplers have been developed, as well as a conceptual design of a complete cryomodule system including ancillaries and this is presented. The cryomodule is designed to allow easy access during testing and uses a novel support system and contains the opposing beamline section to fit inside the LHC envelope.