Cryogenic performance of the vertical cryostat for qualifying ess srf high-beta cavities

S. Pattalwar,A. J. May, K. Dumbell, P. A. Smith, S. Wilde, R. Buckley, P. Corlett, P. R. Davies, M. Ellis, S. Hitchen, P. Hornickel, M. Lowe,D. Mason,P. McIntosh, K. Middleman,A. Moss,A. Oates, M. D. Pendleton, P. Pizzol, T. Weston,A. Wheelhouse,J. Wilson, UKRI

semanticscholar（2019）

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摘要

An innovative vertical cryostat has been developed and commissioned at STFC Daresbury Laboratory for qualifying the high-β SRF cavities for the ESS (European Spallation Source). The cryostat is designed to test 3 dressed cavities in horizontal configuration in one cold run at 2 K. The cavities are cooled to 2 K with superfluid liquid helium filled into individual helium jackets of the cavities. This reduces the liquid helium consumption by more than 70% in comparison with the conventional vertical tests. The paper describes the cryogenic system and its performance with detailed discussions on the initial results.

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