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Design of a horizontal test cryostat for superconducting RF cavities for the FREIA facility at Uppsala University

2014; American Institute of Physics; Linguagem: Inglês

10.1063/1.4860853

1935-0465

Nicolas R. Chevalier, J.-P. Thermeau, Philippe Bujard, T. Junquera, Lars Hermansson, Rocío Santiago Kern, R. Ruber,

Particle Accelerators and Free-Electron Lasers

Uppsala University is constructing a large scale facility, called FREIA (Facility for Research Instrumentation and Accelerator Development). FREIA includes a helium liquefier and an accelerator test facility and has the capacity to test superconducting radio-frequency (RF) cavities with the same RF system and RF power level as in an accelerator. A central element of FREIA is a horizontal test cryostat connected in closed loop to a helium liquefier. This cryostat can house two fully equipped (tuners, piezo, power coupler, helium tank) superconducting cavities to perform full RF high power tests and operate at temperatures between 1.8 K and 4.2 K. The cryostat is designed to accommodate a large array of superconducting cavities and magnets, among which the European Spallation Source (ESS) type spoke and high-β elliptical cavities as well as TESLA/ILC type elliptical cavities. The present status of the project and the design of the cryostat are reported.