Figure 11
RMS amplitudes of (a) horizontal and (b) vertical stored beam oscillations caused by beam injection at each improvement step. (a) A: before the correction; B: by the bump field adjustment; C: by the bump field adjustment and sextupole field optimization; D: by the bump field adjustment, sextupole field optimization and feed-forward correction. (b) A: before the correction; B: by the tilt error correction; C: by the tilt error correction and feed-forward correction. |