Tokamak plasma equilibria with a zero total toroidal current
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, 230031 (China)
Several tokamak experiments have reported the existence of plasma equilibria with a zero total toroidal current in the AC operations of tokamaks. By taking a toroidal current profile model as a function of a quadratic polynomial of {psi}, a variety of equilibrium configurations with a zero total toroidal current have been found by solving the Grad-Shafranov equation numerically in the cylindrical coordinate system for the arbitrary cross section and finite aspect ratio. Results from different parametrizations of the current density (pressure) profile are discussed. Using input parameters consistent with experiments, some of the modeling results have been found to be in good agreement with experiment observations.
- OSTI ID:
- 21103819
- Journal Information:
- Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 2 Vol. 15; ISSN PHPAEN; ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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