Self-Organization in Tokamak Plasma Turbulence

In the past decade, considerable progress in understanding tokamak core turbulence and transport has been made thanks to advances in experimental measurements, numerical simulations, and nonlinear theory. In this presentation, after a brief description of properties of tokamak core turbulence, important role of self-organized structures in plasma confinement and performance will be illustrated. Outstanding remaining problems will be discussed at the end.