  This paper presents the magnetic design of a 100MeV Separated Sector Medical
Cyclotron (SSMC) as well as the optimization of the injection line magnets
where will be used to transport the 14MeV proton beam from the Azimuthally
Varying Field (AVF) cyclotron to the SSMC. The study demonstrates that the
isochronous magnetic field with a tolerance around 10-4 T can be obtained all
along prescribed path by placing three sets of correction trim coils in the
pole tips. The result of Betatron oscillations is sufficient to verify that the
focusing forces of the magnetic field can hold particles close to the median
plane of the magnet. In order to inject the beam by minimum loss from a 14MeV
Cyclotron to SSMC, it is essential for the beam to fit into the acceptance
ellipse of the separate sector cyclotron. The characteristics of the beam
injection system is calculated and optimized by Trace-3D beam dynamic code.
