Field-dependent surface resistance for superconducting niobium accelerating cavities -- condensed overview of weak superconducting defect model
arXiv:2207.12873 · doi:10.1109/TASC.2023.3243268
Abstract
Small (compared to coherence length) weak superconducting defects when located at the surface, combined with the proximity and percolation effects, are claimed responsible for various observations with superconducting rf accelerating cavities with non-constant Q-value, such as "Q-slope" and "Q-drop", the role of temperature, the result of "nitrogen doping" and its relation to the free path, and the influence of the static external magnetic field. The Ginzburg-Landau equations are used to confirm the results.
References in corpus (6)
- Ultra-high quality factors in superconducting niobium cavities in ambient magnetic fields up to 190 mG
- The Importance of the Electron Mean Free Path for Superconducting RF Cavities
- Comment on Field-dependent surface resistance for superconducting niobium accelerating cavities
- Challenges and opportunities of srf theory for next generation particle accelerators
- Advancement in the understanding of the field and frequency dependent microwave surface resistance of niobium
- N-doped surfaces of superconducting niobium cavities as a disordered composite-addendum