Erlangen 2026 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
P: Fachverband Plasmaphysik
P 6: Plasma Wall Interaction I
P 6.1: Hauptvortrag
Dienstag, 17. März 2026, 11:00–11:30, KH 01.020
Controlled Exposure of High-Temperature Ceramics in the Scrape-Off Layer of WEST — •B. De Martino1, J. P. Gunn1, B. Guillermin1, D. Mazon1, A. Casner2, L. Ciupiński3, and G. Komorowska3 — 1CEA, IRFM, F-13108 St-Paul-Lez-Durance, France — 2Université de Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), UMR 5107, F-33405 Talence, France — 3Warsaw University of Technology, Faculty of Materials Science and Engineering, Woloska 141, 02-507 Warsaw, POLAND
The WEST tokamak Scrape-Off Layer (SOL) is equipped with mobile Langmuir probes that can be fitted with sample holders, enabling controlled exposure of materials to extreme heat (106−108 W/m2) and ion fluxes (1022−1024 m−1s−1). Two dedicated experiments were carried out to investigate the thermal response and ablation dynamics of High-Temperature Ceramics, using hydraulically and magnetically driven devices that target respectively the lower and upper ends of the accessible flux range. With the magnetically driven device, installed in the lower divertor, ablation of a SiC sample was achieved under strike-point fluxes. Strong Si emission lines are detected in VUV and visible spectroscopy immediately after exposure, indicating high sublimation rates. Divertor upper-view IR imaging shows saturation of the sample temperature, consistent with a phase change. The average parallel heat flux is estimated at 45 MW/m2, with plasma conditions fully characterised by in-situ diagnostics. Post-mortem analyses enable the characterisation of the damage undergone by the exposed samples.
The full authors list will be presented in the talk.
Keywords: WEST; Ceramics; Heat exhaust; Plasma; Exposure