Systematic Uncertainties in RF-Based Measurement of Superconducting Cavity Quality Factors

Abstract

Q0 determinations based on RF power measurements are subject to at least three potentially large systematic effects that have not been previously appreciated. Instrumental factors that can systematically bias RF based measurements of Q0 are quantified and steps that can be taken to improve the determination of Q0 are discussed.

References in corpus (2)

• Nitrogen and argon doping of niobium for superconducting radio frequency cavities: a pathway to highly efficient accelerating structures
• Sensitivity of Niobium Superconducting Cavities to Trapped Magnetic Flux Dissipation

Cited by in corpus (5)

• Ultra-Low Surface Resistance via Vacuum Heat Treatment of Superconducting Radiofrequency Cavities
• Improved RF Measurements of SRF Cavity Quality Factors
• Intrinsic Quality Factor Extraction of Multi-Port Cavity with Arbitrary Coupling
• Report on first plasma processing trial for a FRIB quarter-wave resonator cryomodule
• A new method to measure the unloaded quality factor of superconducting cavities