Abstract:The sawtooth period control is important in inductive operation of tokamak plasma because the sawteeth with long periods trigger the neoclassical tearing modes (NTMs) which reduce the plasma confinement capability significantly. We studied the effect of the sawtooth period control by the electron cyclotron current drive (ECCD) in ITER using the 1.5-dimensional transport code TOTAL. There is the optimum condition (CD direction and radial position) of ECCD for minimizing the sawtooth period. In addition, it was … Show more
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