Results from ray-tracing calculations with GENRAY. (a) Current drive efficiency for the USM and the LSM in the range of poloidal angle analyzed and for the EL for two values of the toroidal angle, 15° and 35°. (b) Poloidal projection of the ray trajectories for the upper launcher and for the co-current injecting equatorial launchers. In the case of the USM, the rays shown correspond to poloidal angles of 138° and 158° and toroidal angle of 20°. In the case of the LSM, rays are shown for poloidal angles of 124° and 146° and toroidal angle of 18°. For the equatorial launcher, the rays shown correspond to a toroidal angle of 30° for both injection lines. (c) and (d) profiles of density and electron temperature used for the ray-tracing calculations.
Profiles calculated at 55 s (left) and at 1500 s (right) for configuration #1 (solid) and configuration #2 (dash). ((a)-(a′)) EC heating deposition, ((b)-(b′)) safety factor, ((c)-(c′)) electron temperature, and ((d)-(d′)) ion temperature.
Configuration #1 (solid) and configuration #2 (dashed). (a) Total power inside the electron ITB; (b) total power inside the ion ITB; for comparison, the theoretical threshold for ion ITB is shown in red. (c) Minimum value of the magnetic shear, (d) ITB foot radius, (e) electron temperature inverse gradient scale length (f) contribution from the magnetic shear term in the CDBM model.
Configuration #1 (left) and configuration #2 (right), profiles calculated at 1500 s. (a) Toroidal current from the external sources and from the bootstrap mechanism, (b) total toroidal current, and (c) safety factor.
(a) Electron thermal diffusivity profile and (b) electron temperature profile calculated with the Coppi-Tang model (first column Table I ). (c) Electron thermal diffusivity and (d) electron temperature profiles calculated with the CDBM model for configuration #1 (solid black) configuration #2 (dash) and configuration #3 (red).
(a) Total bootstrap current (left axis values, solid symbols) and total EC driven current (right axis values, open symbols) variation with the upper launcher deposition radius for a configuration with 20 MW of EC power delivered to the upper launcher. (b) Bootstrap current and EC driven current for a configuration with 6.7 MW of power on the EL (bottom mirror, deposition radius ) and 13.4 MW on the upper launcher. Variation with respect to the upper launcher deposition radius. (c) Bootstrap current and EC driven current for a configuration with 6.7 MW on the EL and 13.4 MW on the upper launcher. Variation with the EL deposition radius for fixed .
(a) Heating and (b) toroidal current profiles for a configuration with 6.7 MW of EC power on the EL and 13.4 MW on the UL (last column in Table I ) calculated in the relaxed phase, at 2500 s. (c)–(h) Profiles for the same configuration superposed to the range of profiles variation (shaded area) for the configurations shown in Fig. 6 .
Plasma parameters calculated at . The first column refers to results obtained with the Coppi-Tang model. The other columns refer to results calculated with the CDBM model. Quantities in bold fonts are input to TSC, like the central density and the requested plasma current waveform .
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