Model for hot spots and Q-slope behavior in granular niobium thin film superconducting rf cavities

We propose a model to explain power dissipation leading to the formation of hot spots in the inner walls of niobium thin film superconducting rf cavities. The physical mechanism that we explore is due to the constriction of surface electrical current flow at grain interface boundaries. This constric...

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Bibliographic Details
Main Authors: Aymeric Ramiere, Claire Z. Antoine, Jay Amrit
Format: Article
Language:English
Published: American Physical Society 2022-02-01
Series:Physical Review Accelerators and Beams
Online Access:http://doi.org/10.1103/PhysRevAccelBeams.25.022001