Author(s)

M. Itagaki, T. Maeda, A. Wakasa & K. Watanabe

Abstract

The 2-dimensional (2-D) Cauchy condition surface (CCS) method to identify the plasma boundary shape has been expanded to deal with 3-D nuclear fusion plasma. This 3-D CCS method solves a set of boundary integral equations in terms of 3-D vector potential with the aid of measured magnetic sensor signals and coil current data. Results obtained in a trial calculation for axisymmetric plasma indicate that this new 3-D method can also determine the plasma boundary shape accurately in the same way as the 2-D CCS method. The authors’ research group has a plan to improve this 3-D CCS method to analyse fusion plasma that has a helical geometry. Keywords: nuclear fusion, plasma boundary, Cauchy condition surface method, magnetic sensor, vector potential, vacuum field, boundary integral equation.

Keywords

nuclear fusion, plasma boundary, Cauchy condition surface method, magnetic sensor, vector potential, vacuum field, boundary integral equation