F. Sardei

TL;DR: In this article, the authors present an overview on the state-of-the-art 3D fluid transport modeling in the boundaries of 3D toroidal confinement devices and on applications to island divertor physics.

TL;DR: Wendelstein 7-AS was the first modular stellarator device to test some basic elements of stellarator optimization: a reduced Shafranov shift and improved stability properties resulted in β-values up to 3.4% as discussed by the authors.

TL;DR: A promising new plasma operational regime on the Wendelstein stellarator W7-AS has been discovered, extant above a threshold density and characterized by flat density profiles, high energy and low impurity confinement times, and edge-localized radiation.

TL;DR: In this article, the [ital H] mode has been observed for the first time in a currentless stellarator plasma, where the edge localized modes (ELMs) have been observed in a shear-free stellarator without toroidal current.

TL;DR: In this paper, an extended version of the 3D Monte Carlo edge plasma transport code EMC3 including more complex physics is presented, and the balance equations for mass, momentum and energies are formulated in a general conservation form suited for direct application of the Monte Carlo solving algorithm.