Nonlinear Dynamics in Spear Wigglers

@inproceedings{afrnek2000NonlinearDI,
  title={Nonlinear Dynamics in Spear Wigglers},
  author={Jiř{\'i} {\vS}afr{\'a}nek and Cecile Limborg and Andrei Terebilo and K. Ingvar Blomqvist and Pascal Elleaume and Y. M. Nosochkov},
  year={2000}
}
BL11, the most recently installed wiggler in the SPEAR storage ring at SSRL, produces a large nonlinear perturbation of the electron beam dynamics, which was not directly evident in the integrated magnetic field measurements. Measurements of tune shifts with betatron oscillation amplitude and with closed orbit shifts were used to characterise the nonlinear fields of the SPEAR insertion devices (IDs). Because of the narrow pole width in BL11, the nonlinear fields seen along the wiggling electron… CONTINUE READING
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