We introduce interatomic potentials for tungsten in the bcc crystal phase and its defects
within the Gaussian approximation potential framework, fitted to a database of first-principles …

The cooling factor of W is evaluated using state of the art data for line radiation and an
ionization balance which has been benchmarked with experiment. For the calculation of line …

Tungsten (W) has moved into the focus of fusion research being a main candidate for the
plasma facing components (PFCs) of ITER and a future fusion reactor. A main ingredient for …

Plasmas in machines with all metal plasma facing components have a lower Z eff, less
radiation cooling in the scrape-off layer and divertor regions and are prone to impurity …

Component development for operation in a large-scale fusion device requires thorough
testing and qualification for the intended operational conditions. In particular environments …

Sputtering yields of He-induced W 'fuzzy'surfaces bombarded by Ar have been measured in
the linear divertor plasma simulator PISCES-B. It is found that the sputtering yield of a fuzzy …

Material issues pose a significant challenge for the design of future fusion reactors. From a
historic point of view, the material mix used for the first wall of a fusion reactor has …

Operation with all tungsten plasma facing components has become routine in ASDEX
Upgrade. The conditioning of the device is strongly simplified and short glow discharges are …

ASDEX Upgrade has successfully started the second experimental campaign with a full
tungsten coverage of the plasma facing components and without using a boronisation for …

After completion of the tungsten coating of all plasma facing components, ASDEX Upgrade
has been operated without boronization for 1 1/2 experimental campaigns. This has allowed …