Title: Linear simulation of ion temperature gradient driven instabilities in W7-X and LHD stellarators using GTC,
Abstract: The global gyrokinetic toroidal code (GTC) has been recently upgraded to do
simulations in non-axisymmetric equilibrium configuration, such as
stellarators. Linear simulation of ion temperature gradient (ITG) driven
instabilities has been done in Wendelstein7-X (W7-X) and Large Helical Device
(LHD) stellarators using GTC. Several results are discussed to study
characteristics of ITG in stellarators, including toroidal grids convergence,
nmodes number convergence, poloidal and parallel spectrums, and electrostatic
potential mode structure on flux surface.