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Home / Publications / Journals / Fusion Science and Technology / Volume 53 / Number 2T / Pages 152-160

Neoclassical Tearing Modes

H. R. Wilson

Fusion Science and Technology / Volume 53 / Number 2T / February 2008 / Pages 152-160

Technical Paper / Equilibrium and Instabilities

Tearing modes often limit the performance of tokamak plasmas, because the magnetic islands which they generate lead to a loss of confinement, or even a disruption. A particularly dangerous instability is the neoclassical tearing mode, which can grow to a large amplitude because of the amplification effect that the bootstrap current has on an initial 'seed' magnetic island. This paper will address the mechanisms which dominate the neoclassical tearing mode evolution, and thereby identify possible control techniques.

 
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