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TY - CONF AU - Gonnella, D. AU - Eichhorn, R.G. AU - Furuta, F. AU - Ge, G.M. AU - Gruber, T. AU - Hoffstaetter, G.H. AU - Kaufman, J.J. AU - Koufalis, P.N. AU - Liepe, M. AU - Maniscalco, J.T. ED - Petit-Jean-Genaz, Christine ED - Kim, Dong Eon ED - Kim, Kyung Sook ED - Ko, In Soo ED - Schaa, Volker RW TI - Improved N-Doping Protocols for SRF Cavities J2 - Proc. of IPAC2016, Busan, Korea, May 8-13, 2016 C1 - Busan, Korea T2 - International Particle Accelerator Conference T3 - 7 LA - english AB - Nitrogen-doping has been shown to consistently produce better quality factors in SRF cavities than is achievable with standard preparation techniques. Unfortunately, nitrogen-doping typically brings with it lower quench fields and higher sensitivities of residual resistance to trapped magnetic flux. Here we present work to understand these effects in hopes of mitigating them while maintaining the high Q desired by future projects. Using a nitrogen diffusion simulation, material parameters of nitrogen-doped cavities can be predicted prior to doping. These simulations results are consistent with SIMS data taken from samples treated with cavities. The nature of doping's effect on quench field has also been studied using CW and pulsed measurements. These results have allowed us to better understand the nature of nitrogen-doping and its effect on cavity performance. PB - JACoW CP - Geneva, Switzerland SP - 2323 EP - 2326 KW - simulation KW - cavity KW - niobium KW - SRF KW - radio-frequency DA - 2016/06 PY - 2016 SN - 978-3-95450-147-2 DO - 10.18429/JACoW-IPAC2016-WEPMR025 UR - http://jacow.org/ipac2016/papers/wepmr025.pdf ER -