Magnetic-Based Measurements of Tokamak Plasma Equilibrium Parameters

The main purpose of this paper is the determination of plasma equilibrium parameters, as well as current density and safety factor profiles, in IR-T1 tokamak. For this purpose, a diamagnetic loop with its compensation coil and an array of magnetic probes were designed, constructed, and installed on the outer surface of the IR-T1 chamber, and then, the poloidal beta and poloidal and radial magnetic fields were measured. Moreover, a few approximate values of the internal inductance for different possible profiles of the plasma current density were also calculated. Then, from these two techniques results, the plasma horizontal displacement was determined. In addition, from the results, the current density and
$q$
-profiles were obtained.