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TY - CPAPER AU - Macpherson, A. AU - Hernández-Chahín, K.G. AU - Jarrige, C. AU - Maesen, P. AU - Pillon, F. AU - Schirm, K.M. AU - Torres-Sanchez, R. AU - Valverde Alonso, N. TI - CERN’s Bulk Niobium High Gradient SRF Programme: Developments and Recent Cold Test Results J2 - Proc. of International Conference on RF Superconductivity (SRF2015), Whistler, BC, Canada, Sept. 13-18, 2015 AB - Recent results from the bulk niobium high-gradient cavity development program at CERN are presented, with particular focus on test results for the 704 MHz bulk niobium 5-cell elliptical cavity prototypes produced for the Superconducting Proton Linac (SPL) project. Successive cold tests of bare cavities have been used to refine the cavity preparation and testing process, with all steps done in-house at CERN. Current performance results are discussed with reference to observables such as ambient magnetic field, field emission levels, and quenches. PB - JACoW CY - Geneva, Switzerland SP - 291 EP - 295 KW - cavity KW - niobium KW - cathode KW - radiation KW - SRF DA - 2015/12 PY - 2015 SN - 978-3-95450-178-6 DO - 10.18429/JACoW-SRF2015-MOPB074 UR - http://srf2015.vrws.de/papers/mopb074.pdf ER -