Phys. Rev. Lett. 92, 175002 (2004) [4 pages]Modeling of a Lower-Hybrid Current Drive by Including Spectral Broadening Induced by Parametric Instability in Tokamak PlasmasReceived 29 September 2003; published 27 April 2004 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. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.92.175002
DOI:
10.1103/PhysRevLett.92.175002
PACS:
52.35.Hr
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.