Magnet Designs for the Storage Ring of the Shenzhen Innovation Light-Source Facility

The Shenzhen Innovation Light-source Facility (SILF) is a 4th generation 3 GeV synchrotron radiation project, which is proposed by the Institute of Advanced Science Facilities, Shenzhen. For the storage ring, hybrid seven-bend achromat (H7BA) lattice is used to achieve a low electron beam emittance. There are longitudinal gradient bends (LGB), super bends with longitudinal gradient (SUPB), strong transverse gradient dipoles, strong quadrupoles with large vertical gaps, sextupoles with additional correction coils, octupoles, and corrector magnets in each cell. The required specifications of these magnets and the limited space available pose several design challenges. This article presents a summary of magnet designs for the various magnet types except the super-bends.