High-field Q-slope mitigation due to impurity profile in superconducting radio-frequency cavities
High-field Q-slope mitigation due to impurity profile in superconducting radio-frequency cavities
In this study, we present the recent insights into the origin of the high-field Q-slope in superconducting radio frequency cavities. Consequent hydrofluoric acid rinses are used to probe the radio frequency performance as a function of the material removal of two superconducting bulk niobium cavities prepared with low temperature nitrogen …