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TY - CONF AU - Posen, S. AU - Gonnella, D. AU - Liepe, M. ED - Petit-Jean-Genaz, Christine ED - Arduini, Gianluigi ED - Michel, Peter ED - Schaa, Volker RW TI - Recent Progress in Nb3Sn SRF Cavity Development at Cornell J2 - Proc. of IPAC2014, Dresden, Germany, June 15-20, 2014 C1 - Dresden, Germany T2 - International Particle Accelerator Conference T3 - 5 LA - english AB - Nb₃Sn coatings on niobium SRF cavities have the potential to significantly reduce cryogenic costs due to their extremely small surface resistance (R_{s}). In this paper, we present new results showing the repeatability of Cornell's fabrication process, which produces high Q₀ cavities that reach medium fields with minimal Q-slope. We also show the results of attempts to smooth RF surfaces and reduce defects via material removal. However, both HF rinsing and centrifugal barrel polishing resulted in strong performance degradation. PB - JACoW CP - Geneva, Switzerland SP - 2641 EP - 2644 KW - cavity KW - niobium KW - SRF KW - accelerating-gradient KW - cryogenics DA - 2014/07 PY - 2014 SN - 978-3-95450-132-8 DO - 10.18429/JACoW-IPAC2014-WEPRI066 UR - http://jacow.org/ipac2014/papers/wepri066.pdf ER -