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The successful implementation of a new active diagnostic for Alfven Eigenmodes (AE) has allowed TAE and EAE to be driven in linearly stable conditions and to measure, for the first time, their damping rates in a variety of plasma conditions. Weakly damped, multiple kinetic AE have been excited and detected in the TEA/EAE gap frequency range on the JET heated plasmas. Resonant excitation of TAE by ICHR beat waves has also been demonstrated experimentally. The combination of these linear and nonlinear studies should provide insight into the AE stability and their effects on alpha particles' dynamics in future ignition experiments.

Additional information

Authors: FASOLI A ET AL, CRPP-EPFL, Association Euratom, Lausanne (CH);BORBA D ET AL, JET JointUndertaking, Abingdon, Oxon (GB);HOLTIES H, FOM Insitute for Plasma Physics, Nieuwegein (NL)
Bibliographic Reference: Article: Proceedings of the 22nd EPS Conference on Controlled Fusion and Plasma Physics, Vol. 19C (1995), pp. III81-III84
Record Number: 199610065 / Last updated on: 1996-02-16
Original language: en
Available languages: en