Year: 2026
Type: conference-paper
Abstract: This contribution reports on the study of suprathermal electron radial transport enhancement in the presence of electron-heating radio-frequency waves, such as electron-cyclotron waves or lower-hybrid waves. Since suprathermal electrons emit hard X-rays from Bremsstrahlung, experimental data from hard X-ray measurements are used to follow their dynamics. In particular, electron-cyclotron power modulation experiments performed in TCV show that this transport depends on the total electron-cyclotron power. These results are corroborated by experimentally constrained Fokker-Planck simulations [J. Cazabonne et al, Plasma Phys. Control. Fusion 65 , 104001 (2023)]. Similar experiments have been performed in WEST with lower-hybrid waves, and are reported for the first time. Preliminary analyses show potential evidence of suprathermal electron transport, but no clear dependence on wave power nor photon energy at this stage.
Source: EPJ Web of Conferences
Authors: Jean Cazabonne, Tullio Barbui, Stefano Coda, Joan Decker, Ewout Devlaminck, Peter Donnel, Rémi Dumont, Annika Ekedahl, Théo Fonghetti, Pierre Forestier-Colleoni, Pierre Manas, Didier Mazon, Samuele Mazzi, Rémy Nouailletas, Xavier Regal-Mezin, Riccardo Saura, Yves Savoye-Peysson, the TCV Team, and the WEST Team
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W7118969301