CRPP, EPFL, CH-1015 Lausanne, Switzerland
Alfvén Laboratory, Teknikringen 31, KTH, SE-100 44 Stockholm, Sweden
The stability of Alfvén eigenmodes with low to intermediate toroidal mode numbers n=1-12 is examined for a reference equilibrium using two different models for the plasma response which have previously been thoroughly validated against measurements from JET and DIII-D. The fluid LION code generally predicts instability thresholds for the volume averaged alpha-particle pressure around 0.5% for global TAEs and 0.1% for core-localized TAEs, while the calculations performed with the gyrokinetic PENN code show that Alfvén eigenmodes are stable for a large variety of burn conditions.
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