Abstract
A study of the qualitative structure and stability properties of a unified dynamical model for confinement transitions in fusion plasmas yields substantial new global and predictive information. Physics-based conditions are used to unfold trapped or persistent degenerate singularities in a simple model. Structural characterization of the resulting enhanced model achieves unification of previous disparate views of confinement transition physics, supplies valuable intelligence on the big issues of shear flow suppression of turbulence, multiple equilibria and oscillatory régimes, and suggests targeted experimental design, control and optimization strategies for new-generation fusion experiments.
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