Kinetic modelling of the ECRH power deposition in W7-AS

199760 citationsJournal Article

Authors

M. Romé · Max Planck Society

V. Erckmann · Max Planck Society

U. Gasparino · Max Planck Institute for Plasma Physics

H.-J. Hartfuß · Max Planck Institute for Plasma Physics

G. Kühner · Max Planck Institute for Plasma Physics

H. Maaßberg · Max Planck Institute for Plasma Physics

N. B. Marushchenko

Abstract

Kinetic effects are important in low-density high-power ECRH discharges, and the electron distribution function can significantly deviate from Maxwellian. The ECRH power deposition is analysed for perpendicular on-axis heating in W7-AS, with different magnetic configurations characterized by either a minimum or a maximum of B on the plasma axis in the RF injection plane. The different heating scenarios are modelled by means of a new bounce-averaged Fokker - Planck code, well suited for the magnetic field geometry close to the plasma axis of W7-AS.

Topics & Keywords

Plasma Diagnostics and Applications Magnetic confinement fusion research Particle accelerators and beam dynamics

UN Sustainable Development Goals

Affordable and clean energy

Publication Details

Published in: Plasma Physics and Controlled Fusion

Volume 39, Issue 1, pp. 117-158

DOI: 10.1088/0741-3335/39/1/008

Field-Weighted Citation Impact: 9.56