Stability of Global Alfven Waves (Tae, Eae) in Jet Tritium Discharges

The interaction of alpha-particles in JET tritium discharges with global Alfven waves via inverse Landau damping is analysed. It is found that alpha-particle driven eigenmodes were stable in the PTE1 and should also be stable in a future 50:50 deuterium-tritium mix discharge aiming at Q(DT) = 1, provided the same ion density as in the discharges with the best deuterium-deuterium performance is maintained.