Approaches on Measurements of the Shafranov Parameter and Plasma Displacement in Tokamaks

Precision measurements of the Shafranov parameter and Shafranov shift are essential in to kamak plas ma studies. In this contribution we calculated the current independent relations for the Shafranov parameter, and then investigated and compared the technical and theoretical points for the measurements of these parameters. We presented two comparative techniques for the measurement of Shafranov parameter and also two comparat ive techniques for the measurement of Shafranov shift. For the first purpose, two flu x loops were designed and installed on outer surface of the IR-T1 chamber, and then a poloidal flu x and the Shafranov parameter measured fro m them. To co mpare the results, four magnetic probes were designed and installed on outer surface of the IR-T1, and again the value of Shafranov parameter independently was measured. For the second purpose, a modified Rogowski and Saddle Sine coils were designed, constructed, and installed on outer surface of the IR-T1 chamber and Shafranov shift were measured fro m them. To co mpare the plasma position measured using this technique, a method based on the analytical solution is also examined on the IR-T1. Results compared and discussed.