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Á. Cappa | Á. Cappa | ||
== | == Background == | ||
[[File:imagen1.png |thumb|right|300px| Figure 1. Heating scheme. ECH2 beam is launched with two different power levels]] | [[File:imagen1.png |thumb|right|300px| Figure 1. Heating scheme. ECH2 beam is launched with two different power levels]] | ||
The goal of the proposal is to find ECRH launching configurations for which the amplitude of | The goal of the proposal is to find ECRH launching configurations for which the amplitude of | ||
NBI-driven Alfvén Eigenmodes is mitigated. In this particular case we intend to investigate the effect of off-axis ECCD at different | NBI-driven Alfvén Eigenmodes is mitigated. Many different scenarios have already been tested, showing always | ||
strong changes in AEs activity related to changes in plasma conditions or to changes in rotational transform profiles. | |||
increasing density or using ON-axis ECCD to modify iota and . some of this. In this particular case we intend to investigate the effect of off-axis ECCD at different | |||
plasma radius. The heating power set-up shown in figure 1 will allows us to investigate the effect of ECCD with different combinations of power and ECCD efficiency. Studies of coupling between NBI-driven AEs and low frequency zonal flows will benefit from scenario in which AEs activity can be altered without inducing large changes in plasma conditions. | plasma radius. The heating power set-up shown in figure 1 will allows us to investigate the effect of ECCD with different combinations of power and ECCD efficiency. Studies of coupling between NBI-driven AEs and low frequency zonal flows will benefit from scenario in which AEs activity can be altered without inducing large changes in plasma conditions. | ||
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