Electron Bunch Train Excited Higher-Order Modes in a Superconducting RF Cavity

12 Aug 2016  ·  Gao Yongfeng, Huang Senlin, Wang Fang, Feng Liwen, Zhuang Dehao, Lin Lin, Zhu Feng, Hao Jiankui, Quan Shengwen, Liu Kexin ·

Higher-order mode (HOM) based intra-cavity beam diagnostics has been proved effectively and conveniently in superconducting radio-frequency (SRF) accelerators. Our recent research shows that the beam harmonics in the bunch train excited HOM spectrum, which have much higher signal-to-noise ratio than the intrinsic HOM peaks, may also be useful for beam diagnostics... In this paper, we will present our study on bunch train excited HOMs, including the theoretic model and recent experiments carried out based on the DC-SRF photoinjector and SRF linac at Peking University. read more

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Accelerator Physics