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TY - CONF AU - Peng, M.M. AU - Conde, M.E. AU - Ha, G. AU - Jing, C.-J. AU - Liu, W. AU - Power, J.G. AU - Seok, J. AU - Shao, J.H. AU - Shi, J. AU - Wisniewski, E.E. ED - Yamazaki, Yoshishige ED - Raubenheimer, Tor ED - McCausey, Amy ED - Schaa, Volker RW TI - Optimization of a Single-Cell Accelerating Structure for Rf Breakdown Test With Short Rf Pulses J2 - Proc. of NAPAC2019, Lansing, MI, USA, 01-06 September 2019 CY - Lansing, MI, USA T2 - North American Particle Accelerator Conference T3 - 4 LA - english AB - RF breakdown is one of the major limitations to achieve high gradient acceleration for future structure-based normal conducting linear colliders. Previous statistic research shows that the breakdown rate is proportional to E_{a}³⁰ * t_{p}⁵, which indicates that the accelerating gradient E_{a} could be improved by using shorter RF pulses (t_{p}). An X-band 11.7~GHz metallic single-cell structure has been designed for RF breakdown study up to 273~MV/m using short pulses (~3ns) generated by a 400~MW power extractor at Argonne Wakefield Accelerator (AWA) facility. The structure has also been scaled to 11.424~GHz for the long pulse (100-1500~ns) breakdown study driven by a klystron and a pulse compressor at Tsinghua X-band High Power Test-stand (TPoT-X), with the gradient up to 246~MV/m with 200~MW input power. PB - JACoW Publishing CP - Geneva, Switzerland SP - 747 EP - 750 KW - accelerating-gradient KW - acceleration KW - experiment KW - collider KW - linear-collider DA - 2019/10 PY - 2019 SN - 2673-7000 SN - 978-3-95450-223-3 DO - doi:10.18429/JACoW-NAPAC2019-WEPLM67 UR - http://jacow.org/napac2019/papers/weplm67.pdf ER -