A theoretical understanding of the scrape-off layer main heat-flux widths multi-tokamak database for limited plasmas

The Scrape-off Layer and Divertor topical group of the International Tokamak Physics Activity(ITPA) has amassed a database comprising hundreds of measurements of the main scrape-off layer (SOL) heat-flux widthsin inner-wall limited discharges [1]. We have carried out an analysis of the dependence of the heat-flux widthswith respect to the plasma dimensionless parameters, derived fromturbulent transport theory. Restricting our analysis to circular plasmas, we find that a model based on non-linearly saturated turbulence can reproduce the heat-flux width values found in the database with very good agreement. \\[4pt] [1] J. Horacek et al., in 42$^{\mathrm{nd}}$EPS Conference on Plasma Physics, (Lisbon, Portugal, 2015), O2.115.