Figure 4
From: Radio-frequency current drive for thermonuclear fusion reactors
Antenna spectra numerically calculated26 considering modules of LHCD antenna proposed for ITER4,28, see the Method Section. Suitable phasing and feeding of the waveguides produce spectra centred at same n//0 (=1.8) but with three different widths, respectively, Δn// = 0.085 (green curve), Δn// = 0.33 (blue curve) and Δn// = 0.58 (red curve).
