Abstract The Wendelstein 7-X (W7-X) optimized stellarator fusion experiment, which went
into operation in 2015, has been operating since 2017 with an un-cooled modular graphite …

The Wendelstein 7-X project is aimed at demonstrating that an optimised stellarator is an
attractive candidate for a fusion reactor. This requires the achievement of a number of …

Excerpt This book project arose out of the collaboration on Hidden Symmetries and Fusion
Energy1 funded by the Simons Foundation, initially between 2018 and 2022 and then for a …

Intrinsic, diffusion-driven toroidal (bootstrap) currents between− 7 and 17 kA were measured
in the optimised stellarator Wendelstein 7-X (W7-X) for several magnetic configurations at …

Non-resonant divertors (NRDs) separate the confined plasma from the surrounding plasma
facing components (PFCs). The resulting striking field line intersection pattern on these …

The role of toroidal plasma currents for the island divertor scrape-off layer in the stellarator
Wendelstein 7-X is investigated using reciprocating electric probes. Experiments show that …

This paper describes an initial description of the resilient divertor properties of quasi-
symmetric (QS) stellarators using the HSX (Helically Symmetric eXperiment) configuration …

The edge topology of magnetic fusion devices is decisive for the control of the plasma
exhaust. In Wendelstein 7-X, the island divertor concept will be used, for which the edge …

This study introduces a novel divertor target design scheme for stellarators, grounded in
mathematical treatments and tailored to control of toroidal heat load distributions. Initially, a …

Simulations of heat fluxes to the plasma facing components in the Wendelstein 7-X
stellarator will be tested in its next operational phase. The simulations consist of core …