Figure 6
Dynamic (left) and momentum (right) apertures at the center of the 7 m straight section for 12 machines with random alignment and multipole errors, orbit and tune corrections (top and bottom) and additional coupling and beta-beating corrections (bottom). The gray scale represents the percentage of simulated machines for which a given point of the grid represents a stable condition. Red curves represent average apertures. For these calculations, the following configuration was used: six-dimensional tracking; dynamic apertures are calculated for on-momentum particles for 5000 turns; momentum apertures are calculated for y = 1 mm for 3500 turns; a constant physical aperture of 12 mm × 12 mm is considered along the ring; IDs from Table 3 are considered (EPUs in horizontal polarization). |