Speaker
Description
Novel cooling schemes for SRF cavities are under study in the Cryolab at CERN aiming to improve cooling performance of the cavities in terms of heat transfer, lowering cooling source influences and improve cooldown behavior esp. at the transition temperature of the superconducting material. The studied options of integrated channel cooling are currently applied to 1.3 GHz coated copper cavities. Especially Nb3Sn coatings enable cooling temperatures of up to 6 K, which allows the use supercritical helium flow in the cooling channels. An experimental test station has validated the cryogenic concept with cooling capillaries on a copper cavity or a mock-up copper plate with integrated grooves. The results of the cryogenic performance tests will be presented and conclusions for further testing be drawn.