Research on magnetic confinement of high-temperature plasmas has the ultimate goal of
harnessing nuclear fusion for the production of electricity. Although the tokamak is the …

Wendelstein 7-X is the first comprehensively optimized stellarator aiming at good
confinement with plasma parameters relevant to a future stellarator power plant. Plasma …

Wendelstein 7-X is a highly optimized stellarator that went into operation in 2015. With a 30
cubic meter volume, a superconducting coil system operating at 2.5 T, and steady-state …

A significant improvement of plasma parameters in the optimized stellarator W7-X is found
after injections of frozen hydrogen pellets. The ion temperature in the post-pellet phase …

The transport of heavy impurities has been investigated at the Wendelstein 7-X stellarator
during core electron root confinement (CERC) experiments. Iron atoms were injected via the …

Pulsed injections of boron carbide granules into Wendelstein 7-X stellarator (W7-X) plasmas
transiently increase the plasma stored energy and core ion temperatures above the …

The paper presents experimental observations and simulations for the effects of toroidal
plasma current on divertor power depositions on W7-X. With increasing toroidal current …

For the first time, the optimized stellarator Wendelstein 7-X has operated with an island
divertor. An operation regime in hydrogen was found in which the total plasma radiation …

Abstract Wendelstein 7-X (W7-X)(Greifswald, Germany) is an advanced stellarator, which
uses the modular coil concept to realize a magnetic configuration optimized for fusion …

A series of ice pellets was injected into the advanced stellarator Wendelstein 7-X (W7-X).
Although the pellets were small and slow, deep and efficient particle fueling could be …