عنوان مقاله [English]
In this paper, the magnetic probes assembly of Damavand tokamak which are being used for measurement of local magnetic fields, utilized as a discrete Rogowski coil where has been installed inside the vacuum vessel. An important advantage of this approach is the insensitivity of new Rogowski coil to magnetic fields created by the external ohmic and equilibrium coils. Theoretical basis for the calculation of magnetic fields in the space between two probes were discussed and verified with experimental data. The lowest error obtained in the second-order finite element computational method for discretizing Ampere's Law Integral. Moreover, the stability of measured currents considering error for magnetic fields measurement was investigated. According to the results, it has been found that the Damavand Tokamak magnetic probes with the method of finite element second-order calculation method could be used as a discrete Rogowski coil with a much better accuracy than the machine main Rogowski coil.