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TY - CONF AU - Hall, D.L. AU - Cueva, P. AU - Liarte, D. AU - Liepe, M. AU - Maniscalco, J.T. AU - Muller, D.A. AU - Porter, R.D. AU - Sethna, J.P. ED - Schaa, Volker RW ED - Arduini, Gianluigi ED - Pranke, Juliana ED - Seidel, Mike ED - Lindroos, Mats TI - Quench Studies in Single-Cell Nb3Sn Cavities Coated Using Vapour Diffusion J2 - Proc. of IPAC2017, Copenhagen, Denmark, 14â19 May, 2017 C1 - Copenhagen, Denmark T2 - International Particle Accelerator Conference T3 - 8 LA - english AB - The superconductor Nb3Sn is known to have a superheating field, Hsh, of approximately 400 mT. This critical field represents the ultimate achievable gradient in a superconducting cavity, and is equivalent to an accelerating gradient of 90 MV/m in an ILC single-cell cavity for this value of Hsh. However, the currently best performing Nb3Sn single-cell cavities remain limited to accelerating gradients of 17-18 MV/m, translating to a peak surface magnetic field of approx. 70 mT. In this paper, we consider theoretical models of candidate quench mechanisms, and compare them to experimental data from surface analysis and cavity tests. PB - JACoW CP - Geneva, Switzerland SP - 1119 EP - 1122 KW - cavity KW - radio-frequency KW - accelerating-gradient KW - monitoring KW - niobium DA - 2017/05 PY - 2017 SN - 978-3-95450-182-3 DO - 10.18429/JACoW-IPAC2017-MOPVA116 UR - http://jacow.org/ipac2017/papers/mopva116.pdf ER -