Modeling of ion-cyclotron resonant heating in Wendelstein 7-X equilibrium

Joint Varenna-Lausanne International Workshop 2014

Faustin, J.M.^1 ; Cooper, W.A.^1 ; Graves, J.P.^1 ; Pfefferlé, D.^1

Ecole Polytechnique Fédérale de Lausanne (EPFL), Centre de Recherches en Physique des Plasmas (CRPP), Lausanne

CH-1015, Switzerland^1

关键词: Antenna frequency;    Coupled power;    ICRH antennas;    Ion cyclotron resonant heating;    Low-frequency electromagnetic waves;    Power deposition;    Resonance position;    WENDELSTEIN 7-X;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/561/1/012006/pdf
DOI  :  10.1088/1742-6596/561/1/012006

来源: IOP

【 摘 要 】

W7X stellarator 3D equilibrium has been computed with the equilibrium code ANIMEC (Anisotropic Neumann Inverse Moments Equilibrium Code). This equilibrium was used to model ICRH minority heating in4He(H) plasma with the 3D full-wave code LEMan (Low frequency ElectroMagnetic wave propagation). The coupled power spatial distribution is shown for different resonance positions within the range of frequencies foreseen for the ICRH antenna. It is found that for the high mirror equilibrium examined, the antenna frequency can be chosen to optimise the power deposition in the plasma core while limiting the absorption at the edge.