Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
P: Fachverband Plasmaphysik
P 16: Poster Session Plasma Physics
P 16.8: Poster
Donnerstag, 19. März 2026, 13:45–15:45, Redoutensaal
Scaling observations of heat transport in the island divertor of W7-X — •Sebastian Thiede1, Yu Gao1, Marcin Jakubowski1, Peter Manz2, and the W7-X Team1 — 1Max-Planck-Institut für Plasmaphysik, Teilinstitut Greifswald, Wendelsteinstraße 1, 17491 Greifswald, Germany — 2Institut für Physik, Universität Greifswald, Felix-Hausdorff-Straße 6, 17489 Greifswald, Germany
Efficient power exhaust is one of the most important aspects of magnetic confinement devices due to the risk of overloading plasma-facing components (PFCs). Scaling laws of important heat transport parameters are readily available for tokamaks, allowing educated extrapolation to reactor relevant regimes. In the case of stellarators extrapolations are more difficult to justify due to significantly less data being available. Wendelstein 7-X (W7-X) is one of the most advanced stellarators to date. In its recent operational phases the scanned device parameter range was expanded greatly, facilitating the derivation of empirical heat transport scaling laws. A key diagnostic for this derivation is the thermography system that monitors all 10 divertor units of W7-X. Together with the finite-difference code DELVER it is used to get estimates of the impinging heat flux patterns on PFCs. These can be seen as "fingerprints" of different transport processes, and are the main interest of this work. From the variation of the magnetic configuration, the magnetic field strenght and direction, heating power and plasma density we hope to extract trends and possibly quantitative assesment of the relative importance that different transport channels in the scrape-off-layer (SOL) have.
Keywords: W7-X; heat load; heat flux; scaling; thermography