Keyword: focusing
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WEPG79 Time-Resolved Measurement of Quadrupole Wakefields in Corrugated Structures wakefield, quadrupole, emittance, electron 840
 
  • C. Lu, T. Jiang, L.B. Shi, L. Zhao
    LLP, Shanghai, People's Republic of China
  • F. Fu, S. Liu, D. Xiang, P.F. Zhu
    Shanghai Jiao Tong University, Shanghai, People's Republic of China
  • R. Wang
    SINAP, Shanghai, People's Republic of China
  • Z. Zhang
    TUB, Beijing, People's Republic of China
 
  Corrugated structures have recently been widely used for manipulating electron beam longitudinal phase space and for producing THz radiation. Here we report on time-resolved measurements of the quadrupole wakefields in planar corrugated structures. It is shown that while the time-dependent quadrupole wakefield produced by a planar corrugated structure causes significant growth in beam transverse emittance, it can be effectively canceled with a second corrugated structure with orthogonal orientation. The strengths of the time-dependent quadrupole wakefields for various corrugated structure gaps are also measured and found to be in good agreement with theories. Our work should forward the applications of corrugated structures in many accelerator based scientific facilities.  
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DOI • reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-WEPG79  
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