A K=100 separated sector cyclotron is being designed in SKKU in South Korea, this cyclotron is considered the
main drive for ISOL to produce ~ 70MeV proton beam
and 35 MeV deuteron beam for production of radioactive
material as a basic nuclear research.
In this paper we will describe CST numerical
simulation for determining the basic magnet parameters,
magnet material, deformation, imperfection fields and
preliminary ion beam dynamics study for verifying the
focusing properties of the designed magnet.