Publication

Measurement of the damping rate of n=1 toroidal Alfven eigenmodes as a function of the neutral beam heating power and plasma beta on JET

Ambrogio Fasoli
2003
Journal Articles

Abstract

The dependence of the measured damping rate upon the neutral beam heating power (P-NBI) and plasma beta has been experimentally investigated for n = 1 toroidal Alfven eigenmodes (TAEs) in JET limiter plasmas with a monotonic safety factor profile and low edge magnetic shear. The mode frequency is observed to decrease with increasing beta, as predicted by various theoretical models. For low P-NBI < 3 MW, a single n = 1 TAE splits into two modes closely spaced around the expected TAE frequency, and the mode damping rate decreases with increasing beta. On the other hand, at higher P-NBI > 6 MW, no frequency splitting is observed and there are indications that the mode damping rate increases with increasing beta.

Official source

https://infoscience.epfl.ch/entities/publication/e7f02add-46d3-412b-9341-d5b64f6e6459

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Ambrogio Fasoli
2003
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/e7f02add-46d3-412b-9341-d5b64f6e6459

About this result

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