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| == Description of the activity == | | == Description of the activity == |
| Enter description here <ref>A. Einstein, Journal of Exceptional Results (2017)</ref>, including motivation/objectives and experience of the proponent (typically one-two pages) | | Enter description here <ref>A. Einstein, Journal of Exceptional Results (2017)</ref>, including motivation/objectives and experience of the proponent (typically one-two pages) |
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| The goal of the proposal is to find ECRH launching configurations for which the amplitude of
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| NBI-driven Alfvén Eigenmodes (AEs) is mitigated. Besides the interest that such scenarios have for the fast particles topic, studies of coupling between NBI-driven AEs and low frequency zonal flows may also benefit from them.
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| Many scenarios making use of different "control" parameters
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| have already been tested in past experimental sessions, showing always strong changes in AEs activity.
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| Plasma density variations and changes of the rotational transform profile due to the
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| many contributions to the total plasma current (NBCD, ECCD, Bootstrap current) are the parameters
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| with the higher impact. However, although inducing modifications in the general spectrum of the excited modes,
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| none of the investigated scenarios show a clear possibility to suppress AEs without inducing large
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| changes in plasma parameters, being the most promising the one employing ECCD.
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| In this particular case we intend to investigate the effect of
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| off-axis ECCD at different plasma radius.
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| == Background ==
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| 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 |