The properties of particle orbit have been studied at the conditions of linear approximation and non-linear approximation respectively. To keep good beam quality and high beam transport efficiency, the optimized parameters of the injection and extraction systems of SSC have been chosen. A bump coil has been adopted to realize the single turn extraction for some ions with smaller turn distances. The beam vertical oscillation at the injection region of SSC was observed during the commissioning. After adjustment of the position of MSi3 the oscillation was disappeared.
Some studies corresponding to following items are in progress.
For some reasons the beam transportation efficiency from ECR to SFC is not satisfactory now. The beam optics system is redesigned and the beam transport line will be reformed. In order to increase the transport efficiency, the energy of beams extracted from ECR will be increased and the buncher in the line will be improved. At some operation modes the half-frequency bunching method will be adopted. Optimization of the isochronous magnetic field is under way.