Determination of the magnetic field dependence of the surface resistance of superconductors from cavity tests

J. R. Delayen; H. Park; S. U. De Silva; G. Ciovati; Z. Li

doi:10.1103/PhysRevAccelBeams.21.122001

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Determination of the magnetic field dependence of the surface resistance of superconductors from cavity tests

J. R. Delayen, H. Park, S. U. De Silva, G. Ciovati, Z. Li

DOI 10.1103/PhysRevAccelBeams.21.122001 · Physical Review Accelerators and Beams

T1

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Abstract

We present a general method to derive the magnetic field dependence of the surface resistance of superconductors from the Q-curves obtained during the cryogenic tests of cavities. The results are applied to coaxial half-wave cavities, TM-like “elliptical” accelerating cavities, and cavities of more complicated geometries.

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Formula	Reported Tc (K)	Pressure (GPa)	Type
Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Nb3Sn Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown