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TY - UNPB AU - Palczewski, A.D. AU - Ciovati, G. AU - Dhakal, P. AU - Geng, R.L. AU - Reece, C.E. AU - Tian, H. TI - Lessons Learned From Nitrogen Doping at JLab - Exploration of Surface Resistance and Quench Field Trade-Offs With Varied Interstitial Atom Diffusion of Niobium Cavity Surfaces J2 - Proc. of International Conference on RF Superconductivity (SRF2015), Whistler, BC, Canada, Sept. 13-18, 2015 AB - Interstitial diffusion of atomic species into the surface of niobium has been found to yield significantly reduced srf surface resistance and lowered quench fields. This talk summarizes systematic efforts to explore the trade-offs of these phenomena with a goal of learning how to maximize Q0 in the 30 MV/m regime. The talk also summarizes N-doped cavity progress at JLab for LCLS-II. PB - JACoW CY - Geneva, Switzerland ER -