A compact toroid (CT) penetrating into a tokamak discharge is modelled as a conducting solid sphere with an intrinsic magnetic moment. Equations of CT motion in tokamak discharges are derived and used to calculate the trajectory of a CT with parameters pertinent for penetrating the ITER tokamak. The advantage of tangential CT injection and the optimal directionof the initial magnetic moment are discussed.
Magnetic measurements of plasma configuration parameters in a tokamak