This thesis addresses the issue of plasma instabilities driven by alpha particles in the upcoming fusion reactor ITER. This work provides for the first time a predictive study of this interaction using a nonlinear global electromagnetic gyrokinetic model, including the interaction between multiple instabilities, and the resulting alpha particle transport. A hierarchy of models is used, with results shown also from the use of linear and perturbative models, where systematic scans can be performed.
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This thesis addresses the issue of plasma instabilities driven by alpha particles in the upcoming fusion reactor ITER. This work provides for the first time a predictive study of this interaction using a nonlinear global electromagnetic gyrokinetic model, including the interaction between multiple instabilities, and the resulting alpha particle transport. A hierarchy of models is used, with results shown also from the use of linear and perturbative models, where systematic scans can be performed...
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Translated abstract:
In dieser Arbeit wird das Problem von alpha-Teilchen getriebenen Plasmainstabilitäten im zukünftigen Fusionsexperiment ITER behandelt. Zum ersten mal wird in dieser Arbeit ein nicht-lineares, globales elektromagnetisches gyrokinetisches Modell verwendet um den Effekt eines Spektrums von Instabilitäten auf den alpha-Teilchen Transport vorherzusagen. Eine Hierarchie von einfacheren hybrid Modellen wird mit diesen Rechnungen verglichen, um weitere systematische Untersuchungen zu ermöglichen.