In this paper, we present a brief historic overview of the research on dust in fusion devices
with carbon plasma-facing components and then highlight the most recent developments in …

Dusty plasmas are electrically quasi-neutral media that, along with electrons, ions, neutral
gas, radiation, and electric and/or magnetic fields, also contain solid or liquid particles with …

In state-of-the-art stellarators, turbulence is a major cause of the degradation of plasma
confinement. To maximize confinement, which eventually determines the amount of nuclear …

We present a device for controlled injection of a variety of materials in powder form. The
system implements four independent feeder units, arranged to share a single vertical drop …

We report observations from the DIII-D tokamak indicating that boron (B) powder injection in
tokamak plasmas improves wall conditions similarly to glow discharge boronization (GDB) …

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 injection of boron (B) and boron nitride (BN) powders into ASDEX Upgrade H-mode
discharges have demonstrated effective control of tungsten influx in low density/collisionality …

Injection of impurities in the form of sub-millimeter powder grains is performed for the first
time in the Large Helical Device (LHD) plasma, employing the Impurity Powder Dropper …

Abstract Substituting Beryllium (Be) with Tungsten (W) as material for the first wall gives rise
to new challenges for the ITER project. The additional W at the main chamber could result in …

Wall conditioning is essential in tokamak and stellarator research to achieve plasma
performance and reproducibility. This paper presents an overview of recent conditioning …