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TY - CPAPER AU - Weingarten, W. AU - Eichhorn, R.G. TI - Field-Dependent Surface Resistance for Superconducting Niobium Accelerating Cavities: The Case of N-Doping J2 - Proc. of International Conference on RF Superconductivity (SRF2015), Whistler, BC, Canada, Sept. 13-18, 2015 AB - The dependence of the Q-value on the RF field (Q-slope) for superconducting RF cavities is actively studied in various accelerator laboratories. Although remedies against this dependence have been found, the physical cause still remains obscure. A rather straightforward two-fluid model description of the Q-slope in the low and high field domains is extended to the case of the recently experimentally identified increase of the Q-value with the RF field obtained by so-called "N-doping”. PB - JACoW CY - Geneva, Switzerland SP - 95 EP - 99 KW - niobium KW - cavity KW - data-analysis KW - electron KW - superconductivity DA - 2015/12 PY - 2015 SN - 978-3-95450-178-6 DO - 10.18429/JACoW-SRF2015-MOPB010 UR - http://srf2015.vrws.de/papers/mopb010.pdf ER -