Apple versus donut: How the shape of a tokamak impacts the limits of the edge of the plasma

A new model for ballooning instabilities in apple-shaped fusion vessels considers the height and width of the plasma’s edge.

​A new model for ballooning instabilities in apple-shaped fusion vessels considers the height and width of the plasma’s edge. A new model for ballooning instabilities in apple-shaped fusion vessels considers the height and width of the plasma’s edge.