LOM and HOM damping study in a superconducting deflecting cavity for ALS at LBNL

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SHI Jia-Ru, CHEN Huai-Bi, TANG Chuan-Xiang, ZHENG Shu-Xin and Derun Li. LOM and HOM damping study in a superconducting deflecting cavity for ALS at LBNL[J]. Chinese Physics C, 2008, 32(3): 205-208. doi: 10.1088/1674-1137/32/3/009
SHI Jia-Ru, CHEN Huai-Bi, TANG Chuan-Xiang, ZHENG Shu-Xin and Derun Li. LOM and HOM damping study in a superconducting deflecting cavity for ALS at LBNL[J]. Chinese Physics C, 2008, 32(3): 205-208.  doi: 10.1088/1674-1137/32/3/009 shu
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Received: 2007-05-18
Revised: 2007-06-23
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LOM and HOM damping study in a superconducting deflecting cavity for ALS at LBNL

    Corresponding author: SHI Jia-Ru,

Abstract: 

Superconducting deflecting cavities can be used in synchrotron light source to generate subpico-second X-ray pulses while the impedance of the lower order modes (LOM) and higher order modes (HOM) in the cavity should be kept below an accepted level to avoid beam instability. These modes can be damped by adding waveguide on beam pipe. Detailed simulation of Q in CST Microwave
Studio is introduced and experiment results on an aluminum model cavity with damping waveguide are reported to make a comparison.

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