Bootstrap current is regarded as a serious candidate for non-inductively driving a significant fraction of the total … bootstrap current was observed. In this context, non-inductive current density profile determination is essential for … finally compared to several models of bootstrap current including Hirsman`s with low collisionality, matrix formulation and …

Bootstrap current is regarded as a good candidate to sustain a large fraction of the plasma current, in the so … CRONOS (1D current diffusion code) using the profile of bootstrap current, or with the knowledge of the resistivity, allows … also a self consistent determination of the bootstrap current. First results show that the energy enhancement factor H …

of a tokamak with high bootstrap current fraction under high performance conditions, without assistance from a … profiles and reduces the bootstrap current. Characteristically these plasmas have 65%-80% bootstrap current, 25%-30% NBCD, and … 5%-10% ECCD. Fully noninductive operation is essential for steady-state tokamaks. For efficient operation, the bootstrap …

The bootstrap fraction, I{sub bs}/I{sub p}, and the shape of the bootstrap current density, J{sub bs}(r), can depend … sensitively on the shape of the plasma profiles. Beginning with Hirshman`s form for the bootstrap current density, and making a … consideration of the shape of the bootstrap current density help identify operating regimes for tokamaks which optimize bootstrap …

current calculations, over the outer 60% of the plasma radius. Relatively small synergy net bootstrap current is obtained for … EBW power up to 4 MW. Locally, bootstrap current density increases in proportion to increased plasma pressure, and this … half-banana width outwards/inwards for the co-/counter-passing regions. This model agrees well with standard bootstrap …

The bootstrap fraction, I{sub bs}/I{sub p}, and the shape of the bootstrap current density, J{sub bs}(r), can depend … sensitively on the shape of the plasma profiles. Beginning with Hirshman's form for the bootstrap current density, and making a … consideration of the shape of the bootstrap current density help identify operating regimes for tokamaks which optimize bootstrap …