Modeling of a lower-hybrid current drive by including spectral broadening induced by parametric instability in Tokamak plasmas
By incorporating parametric instabilities of lower hybrid (LH) waves into a ray-tracing Fokker- Planck code, accurate simulations of the LH deposition profiles are provided, which are useful for interpreting the long-lasting internal transport barriers (ITBs) sustained by lower hybrid current drive (LHCD) on JET (Joint European Torus). Utilizing the new model, the simulation of the q-profile evolution results in agreement with that provided by the motional Stark effect reconstructed equilibria. Low magnetic shear (s = 0) is produced by LHCD in a layer close to the ITB radial foot.
Bibliographic Reference: An article published in: Physical Review Letters, week ending 30 April 2004, Volume 92, Number 17
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Record Number: 200417507 / Last updated on: 2004-05-10
Original language: en
Available languages: en