Extension of the Newcomb equation into the vacuum for the stability analysis of tokamak edge plasmas

• DOI: 10.1016/j.cpc.2006.04.008
• Publication Date: 2006-06-13T14:20:58Z
• Authors: Nobuyuki Aiba; Shinji Tokuda; Tomoko Ishizawa; Masao Okamoto
• Keywords: Code (set theory)

The formulation for solving numerically the two-dimensional Newcomb equation has been extended to calculate the vacuum energy integral by using a vector potential method. According to this extension, a stability code MARG2D has been adapted, and coded for parallel computing in order to reduce substantially the CPU time. The MARG2D code enables a fast stability analysis of ideal external MHD modes from low to high toroidal mode numbers on the basis of the single physical model, and then the code works as a powerful tool in an integrated simulation where it is combined with transport codes, and also in the analysis of tokamak edge plasma experiments.