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TY - UNPB AU - Conde, M.E. AU - Antipov, S.P. AU - Doran, D.S. AU - Gai, W. AU - Gao, Q. AU - Ha, G. AU - Jing, C.-J. AU - Liu, W. AU - Neveu, N.R. AU - Power, J.G. AU - Qiu, J.Q. AU - Whiteford, C. AU - Wisniewski, E.E. ED - Schaa, Volker RW ED - Power, Maria ED - Shiltsev, Vladimir ED - White, Marion TI - DWFA Staging Results at the Argonne Wakefield Accelerator Facility (AWA) J2 - Proc. of NAPAC2016, Chicago, IL, USA, October 9-14, 2016 C1 - Chicago, IL, USA T2 - North American Particle Accelerator Conference T3 - 3 LA - english AB - We report on recent Two-Beam-Acceleration (TBA) experiments conducted at the Argonne Wakefield Accelerator Facility (AWA), which used 70 MeV electron bunches to accelerate a 0.5 nC witness bunch in gradients of up to 150 MV/m. The wakefields were generated by the passage of the 15 - 45 nC drive bunches through iris-loaded metallic structures operating at 11.7 GHz. No indication of witness beam quality degradation was observed, and bunch charge was preserved during the acceleration process. Another series of experiments was conducted using two TBA stages, demonstrating acceleration of the witness beam in these two subsequent stages by means of two independent drive bunch trains. PB - JACoW CP - Geneva, Switzerland ER -