Poloidal cross-section at shot = 102 242 for EAST. The dashed black lines indicate contours of constant magnetic flux {{\Psi }} for a given plasma equilibrium, the solid blue line marks the third harmonic ICRH layer of deuterium plasma and the colourmap represent the plasma density distribution.
Contour plots of (a) electric field E_+ and (b) power absorption by deuterium (P_{D,n = 1}) by n = 1 cyclotron damping. The ICRF wave of 34 MHz, n_\phi = 16 with a top launcher for ITER D(50\%)-T(50\%) plasmas is simulated by TORIC [7]. Here, n_e = 10^{20} \textrm{m}^{-3}, T_{e0} = 25 keV, T_{D0} = 27.5 keV, and T_{T0} = 27.5 keV. The X-axis is the distance from mangetic axis in major radius, X = R-R_M. In (a), a ray path simulated by GENRAY [21] (black line), the tritium resonance layer (red line), the ion–ion hybrid layer (yellow line), and the deuterium resonance layer (blue line) are shown. The units of contour value are (a) V m−1 and (b) MW\textrm{m}^{-3}, respectively, for 1MW total power absorption.
(a) Power absorption fraction of various species as 3He concentration increases from 1% to 20%. (b) Positions of IIRH layer and ion cyclotron resonance layer.
Ion heating through plasma merging and magnetic reconnection. Based on outflow heating mechanism, magnetic reconnection heats ions in the downstream region of outflow jet to form radially double-peak Ti profile. In high guide field condition (Bt ∼ 5Brec), cross-field radial heat transport is strongly suppressed with the weight of {\kappa }_{{\Vert}}^{i}/{\kappa }_{\perp }^{i}\sim 2{({\omega }_{ci}{\tau }_{ii})}^{2}\gg 1 and the merging startup ST sustains the characteristic hollow ion temperature profile after the end of merging.
![Contour plots of (a) electric field E_+ and (b) power absorption by deuterium (P_{D,n = 1}) by n = 1 cyclotron damping. The ICRF wave of 34 MHz, n_\phi = 16 with a top launcher for ITER D(50\%)-T(50\%) plasmas is simulated by TORIC [7]. Here, n_e = 10^{20} \textrm{m}^{-3}, T_{e0} = 25 keV, T_{D0} = 27.5 keV, and T_{T0} = 27.5 keV. The X-axis is the distance from mangetic axis in major radius, X = R-R_M. In (a), a ray path simulated by GENRAY [21] (black line), the tritium resonance layer (red line), the ion–ion hybrid layer (yellow line), and the deuterium resonance layer (blue line) are shown. The units of contour value are (a) V m−1 and (b) MW\textrm{m}^{-3}, respectively, for 1MW total power absorption.](https://fusionpapers-figures.s3.ap-northeast-1.amazonaws.com/nfadf569f2.jpg)
