Fast particle destabilization of toroidicity-induced Alfvén eigenmodes in the National Spherical Torus Experiment

N. N. Gorelenkov, C. Z. Cheng, G. Y. Fu, S. Kaye, R. White, M. V. Gorelenkova

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

Toroidicity-induced Alfvén eigenmode (TAE) stability in the National Spherical Torus Experiment (NSTX) [S. M. Kaye, M. Ono, Y.-K. M. Peng et al., Fusion Technol. 36, 16 (1999)] is analyzed using the improved NOVA-K code [N. N. Gorelenkov, C. Z. Cheng, and G. Y. Fu, Phys. Plasmas 6, 2802 (1999)], which includes finite orbit width and Larmor radius effects and is able to predict the saturation amplitude for the mode using the quasilinear theory. A broad spectrum of unstable global TAEs with different toroidal mode numbers is predicted. Due to the strong poloidal field and the presence of the magnetic well in NSTX, better particle confinement in the presence of TAEs in comparison with tokamaks is illustrated making use of the ORBIT code [R. B. White and M. S. Chance, Phys. Fluids 27, 2455 (1984)].

Original languageEnglish
Pages (from-to)1433-1436
Number of pages4
JournalPhysics of Plasmas
Volume7
Issue number5 I
DOIs
Publication statusPublished - 2000 May

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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