fig1.html
Figure 1. Simulation results of the stored beam oscillation induced in the horizontal plane by using the ideal half-sine field shape.
The old scheme (red line) causes the stored beam oscillation whose amplitude is 1.5mm in rms. It is found that the amplitude induced by the new scheme (light green line) is quite small, only 0.04mm in rms. The rms horizontal beam size (1σ in Gaussian distribution) at the ID source point is about 0.3mm.