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Study of nanometric superconducting multilayers for RF field screening applications

Abstract : Vortex penetration severely limits high field performances in bulk niobium RF cavities for accelerators. To reach higher fields, Gurevich [Appl. Phys. Lett. 88, 012511 (2006)] proposed to deposit nanometric layers (d < λ) to partially screen of the field sensed by niobium. Model (NbN/MgO)n (n = 0 to 4) samples have been deposited on thick Nb layers. This paper presents the first complete characterization set (HC1 and RF surface resistance) of a new family of composite nanostructured superconducting layers deposited on Nb, which are liable to bring a breakthrough in the technology of superconducting accelerating RF cavities.
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http://hal.in2p3.fr/in2p3-00814179
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Submitted on : Tuesday, April 16, 2013 - 4:19:56 PM
Last modification on : Sunday, June 26, 2022 - 11:58:36 AM

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C. Z. Antoine, J. C. Villegier, G. Martinet. Study of nanometric superconducting multilayers for RF field screening applications. Applied Physics Letters, American Institute of Physics, 2013, 102, pp.102603. ⟨10.1063/1.4794938⟩. ⟨in2p3-00814179⟩

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