What is the role of intermittency in determining the plasma profiles in the SOL?

The exhaust of particles and heat in magnetic fusion devices determines the level of interaction between the plasma and material surfaces. A previous study observed cross-field transport increasing with distance into the SOL. In addition, experiments have reported flattening of density and temperature profiles a certain distance from the separatrix. These suggest increased interaction with the first wall than generally thought and motivate a focus on the interaction relative to the divertor. The SOL is observed to be very turbulent with blobs erupting from the core and accounting for much of the transport in the far-SOL. A framework describing how blob dynamics generate SOL profiles and fluctuation statistics is used to interpret experimental profile and fluctuation data in the Helimak, a device that models the SOL of a tokamak. Langmuir probes are used for determination of fluctuation statistics and equilibrium profiles. The inputs to the Militello framework are experimentally or theoretically derived models for draining, radial blob velocity, and amplitude and width probability distributions.