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Title: Fast particle destabilization of toroidicity-induced Alfven eigenmodes in the National Spherical Torus Experiment

Abstract

Toroidicity-induced Alfven 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)]. (c) 2000 American Institute of Physics.

Authors:
 [1];  [1];  [1];  [1];  [1];  [2]
  1. Princeton Plasma Physics Laboratory, P.O. Box 451, Princeton, New Jersey 08543-0451 (United States)
  2. TRINITI, Troitsk, Moscow region, 142092, Russia (Russian Federation)
Publication Date:
OSTI Identifier:
20216032
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 7; Journal Issue: 5; Other Information: PBD: May 2000; Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ALFVEN WAVES; TOROIDAL CONFIGURATION; PLASMA INSTABILITY; PLASMA CONFINEMENT; THEORETICAL DATA

Citation Formats

Gorelenkov, N. N., Cheng, C. Z., Fu, G. Y., Kaye, S., White, R., and Gorelenkova, M. V. Fast particle destabilization of toroidicity-induced Alfven eigenmodes in the National Spherical Torus Experiment. United States: N. p., 2000. Web. doi:10.1063/1.873961.
Gorelenkov, N. N., Cheng, C. Z., Fu, G. Y., Kaye, S., White, R., & Gorelenkova, M. V. Fast particle destabilization of toroidicity-induced Alfven eigenmodes in the National Spherical Torus Experiment. United States. doi:10.1063/1.873961.
Gorelenkov, N. N., Cheng, C. Z., Fu, G. Y., Kaye, S., White, R., and Gorelenkova, M. V. Mon . "Fast particle destabilization of toroidicity-induced Alfven eigenmodes in the National Spherical Torus Experiment". United States. doi:10.1063/1.873961.
@article{osti_20216032,
title = {Fast particle destabilization of toroidicity-induced Alfven eigenmodes in the National Spherical Torus Experiment},
author = {Gorelenkov, N. N. and Cheng, C. Z. and Fu, G. Y. and Kaye, S. and White, R. and Gorelenkova, M. V.},
abstractNote = {Toroidicity-induced Alfven 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)]. (c) 2000 American Institute of Physics.},
doi = {10.1063/1.873961},
journal = {Physics of Plasmas},
issn = {1070-664X},
number = 5,
volume = 7,
place = {United States},
year = {2000},
month = {5}
}