N-doped surfaces of superconducting niobium cavities as a disordered composite-addendum

TL;DR

This paper analyzes experimental data on nitrogen-doped superconducting niobium cavities to validate a model explaining the increase in quality factor with higher accelerating gradients.

Contribution

It provides experimental validation for a model that explains the Q-value enhancement in N-doped superconducting niobium cavities.

Findings

Confirmed the model explaining Q-value increase

Supported the disordered composite nature of N-doped surfaces

Enhanced understanding of N-doping effects on superconducting cavities

Abstract

Experimental data on N-doped superconducting (sc) cavities are further analyzed which contribute to confirm a recently proposed model explaining the increase of the Q-value versus the accelerating gradient.