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TY - CONF AU - Qiu, F. AU - Fukuda, S. AU - Matsumoto, S. AU - Matsumoto, T. AU - Miura, T. AU - Natsui, T. ED - Pei, Guoxi ED - Schaa, Volker RW ED - Chin, Yong Ho ED - Fu, Shinian ED - Zhao, Ning TI - Design Study of a High Efficiency Klystron for SuperKEKB Linac J2 - Proc. of LINAC2018, Beijing, China, 16-21 September 2018 CY - Beijing, China T2 - Linear Accelerator Conference T3 - 29 LA - english AB - The injector linear accelerator (linac) for the SuperKEKB particle accelerator requires a higher efficiency klystron than the currently used 50 MW, S-band, pulsed unit (PV3050/E3730), which operates at the same voltage, to increase the power redundancy. The efficiency is expected to improve from the currently observed 45% to more than 60%. We propose a type of high efficiency klystron using novel bunching mechanisms. The 1-D disk model based code is used for preliminary optimization of the tube parameters; these parameters are further checked by 2-D codes known as field charge interaction (FCI) and MAGIC. In this paper, the design consideration of the high efficiency klystron is presented. PB - JACoW Publishing CP - Geneva, Switzerland SP - 901 EP - 904 KW - klystron KW - cavity KW - gun KW - simulation KW - linac DA - 2019/01 PY - 2019 SN - 2226-0366 SN - 978-3-95450-194-6 DO - DOI: 10.18429/JACoW-LINAC2018-THPO096 UR - http://jacow.org/linac2018/papers/thpo096.pdf ER -