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TY - CPAPER AU - Posen, S. AU - Merio, M. AU - Romanenko, A. AU - Trenikhina, Y. TI - Fermilab Nb3Sn R&D Program J2 - Proc. of International Conference on RF Superconductivity (SRF2015), Whistler, BC, Canada, Sept. 13-18, 2015 AB - A substantial program has been initiated at FNAL for R&D on Nb3Sn coated cavities. Since early 2015, design, fabrication, and commissioning has been ongoing on a coating chamber, designed for deposition via vapor diffusion. The volume of the chamber will be large enough to accommodate not just R&D cavities, but full production-style cavities such as TeSLA 9-cells. In this contribution, we overview the development of the chamber and we introduce the R&D program planned for the coming years. We discuss research paths that may yield increased maximum fields and reduced residual resistances as well as new applications that could be explored with larger coated cavities. PB - JACoW CY - Geneva, Switzerland SP - 678 EP - 680 KW - niobium KW - cavity KW - SRF KW - cryogenics KW - accelerating-gradient DA - 2015/12 PY - 2015 SN - 978-3-95450-178-6 DO - 10.18429/JACoW-SRF2015-TUPB048 UR - http://srf2015.vrws.de/papers/tupb048.pdf ER -