Dependence of Tokamak Plasma Position to its Internal Inductance

Abstract

In this contribution we will presented comparison of two techniques in order to inverstigate of the effects of internal inductance on tokamak plasma position, based on a toroidal flux loop (diamagnetic loop) and magnetic probes measurements. For this purpose, a diamagnetic loop with its compensation coil, and also array of magnetic probes were designed, constructed, and installed on outer surface of the IR-T1 tokamak chamber, and then the poloidal beta and poloidal and radial magnetic fields obtained. Moreover a few approximate values of the internal inductnace for different possible profiles of the plasma curret density are also calculated. Then, the Shafranov parameter and also the Shafranov shit were determined. Experiemtnal results compared. Comparison of results on IR-T1, show that (1) by increasing the internal inductance from one, plasma column shifted inward, and also (2) IR-T1 plasma current desntiy profile relate to the power of \upsilon=3 approximately.