Nuclear Techniques ›› 2018, Vol. 41 ›› Issue (8): 80202-080202.doi: 10.11889/j.0253-3219.2018.hjs.41.080202

• LOW ENERGY ACCELERATOR, RAY AND APPLICATIONS • Previous Articles     Next Articles

Nonlinear compensation in velocity realized by wakefield structure

LI Zhiyao, CHEN Han, DU Yingchao   

  1. Department of Engineering Physics, Tsinghua University, Beijing 100084, China
  • Received:2018-03-22 Revised:2018-05-12 Online:2018-08-10 Published:2018-08-15
  • Supported by:
    Supported by National Natural Science Foundation of China (No.11375097)

Abstract: [Background] An important limitation for using of velocity bunching is nonlinear effect which leads to non-uniform compression and beam quality deterioration.[Purpose] This study aims to realize nonlinear compensation caused by nonlinear effect in velocity bunching.[Method] Based on the self-induced wakefield while the beam passing through a wakefield structure, nonlinear compensation is achieved by modulation of beam longitudinal phase space. Start-to-end simulation by ASTRA is performed in this paper.[Results] The results show that slice energy spread of beam increased from about 3keV to about 20keV which is benefit to suppress the micro-bunching instability in subsequent process.[Conclusion] Uniform velocity bunching can be realized by the method of nonlinear compensation to general high quality uniformly compressed beam.

Key words: Velocity bunching, Wakefield structure, Nonlinear compensation

CLC Number: 

  • TL99