Abstract
The dynamic apertures in several lattices for the low emittance of the Photon Factory storage ring (PF ring) have been investigated by a simulation method using the code Strategic Accelerator Design (SAD). The dynamic apertures in each lattice without and with machine errors were obtained by a tune survey in the simulation. It was also shown how large are the dynamic apertures compensated after corrections of a closed orbit distortions. The operating tunes in low-emittance lattices can be obtained based on the view point of dynamic apertures obtained from a tune survey. It is shown that a low-emittance 90° cell lattice provides sufficient dynamic aperture after a correction of the closed orbit distortion in the PF ring.
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