Design Study of a High Efficiency Klystron for SuperKEKB Linac
Feng Qiu, Shigeki Fukuda, Shuji Matsumoto, T. Matsumoto, Takako Miura, Takuya Natsui
Abstract
Feng Qiu, Shigeki Fukuda, Shuji Matsumoto, T. Matsumoto, Takako Miura, Takuya Natsui
Abstract
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.
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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.
Key concepts: Klystron, Linear particle accelerator, Computer science, Electrical engineering, Engineering, Physics, Optics, Beam (structure)