Figure 6
Performance of the undulator with structure shown in Fig. 2(c) in horizontal (red), circular (green) and vertical with antiparallel shifts (blue) modes. (a) Vertical (solid line) and horizontal (broken line) magnetic fields. (b) Fluxes (left axis, solid line) and linear or circular polarizations (right axis, broken line) at different photon energies. (c), (d), (e) Electron orbits and (f), (g), (h) electron velocities in horizontal, circular and vertical modes, respectively. |