Effective Magnetic Field Computation in Tokamaks in Presence of Magnetic Materials

Ferromagnetic materials play an important role in the magnetic fields distribution inside Tokamaks. In some specific applications, there is the need for a prompt and sufficiently accurate computation. A typical example is the impact of ferromagnetic parts on the magnetic measurements used as data source in the plasma shape and position reconstruction. In such case, starting from probe signals and knowledge of external currents, the information about plasma must be recovered by filtering out the contribution of magnetic materials and eddy currents in passive structures