Controlling the Profile of Ion-Cyclotron-Resonant Ions in JET with theWave-Induced Pinch Effect

Controlling the Profile of Ion-Cyclotron-Resonant Ions in JET with theWave-Induced Pinch Effect

Controlling the Profile of Ion-Cyclotron-Resonant Ions in JET with theWave-Induced Pinch Effect 150 150 Mathew

Experiments on the JET tokamak show that the wave-induced pinch in the presence of toroidally asymmetric waves can provide a tool for controlling the profile of ion-cyclotron-resonant 3 He ions. Direct evidence for the wave-induced pinch has been obtained from the measured -ray emission profiles. Concurrent differences in the excitation of Alfve?n eigenmodes (AEs), sawtooth stabilization, electron temperatures, and fast-ion stored energies are observed. The measured location of the AEs and -ray emission profiles are consistent with the fast-ion radial gradient providing the drive for AEs.

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09/09/2002