Neoclassical tearing modes in DIII-D and calculations of the stabilizing effects of localized electron cyclotron current drive | Zendy

R. Prater | Zendy; S. Bernabei | Zendy; R. W. Harvey | Zendy; R. J. La Haye | Zendy; Y. R. LinLiu | Zendy; J. Lohr | Zendy; F. W. Perkins | Zendy; KaLeung Wong | Zendy

Open Access

Neoclassical tearing modes in DIII-D and calculations of the stabilizing effects of localized electron cyclotron current drive

Author(s) -

R. Prater,

S. Bernabei,

R. W. Harvey,

R. J. La Haye,

Y. R. LinLiu,

J. Lohr,

F. W. Perkins,

KaLeung Wong

Publication year - 1999

Publication title -

aip conference proceedings

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.177

H-Index - 75

eISSN - 1551-7616

pISSN - 0094-243X

DOI - 10.1063/1.59676

Subject(s) - cyclotron , tearing , diii d , electron , physics , limit (mathematics) , amplitude , beta (programming language) , current (fluid) , atomic physics , range (aeronautics) , electron cyclotron resonance , tokamak , computational physics , nuclear physics , plasma , materials science , optics , mathematical analysis , mathematics , computer science , composite material , thermodynamics , programming language

Neoclassical tearing modes are found to limit the achievable beta in many high performance discharges in DIII-D. Electron cyclotron current drive within the magnetic islands formed as the tearing mode grows has been proposed as a means of stabilizing these modes or reducing their amplitude, thereby increasing the beta limit by a factor around 1.5. Some experimental success has been obtained previously on Asdex-U. Here we examine the parameter range in DIII-D in which this effect can best be studied.

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