Stochastic couplings of neoclassical tearing modes in ITER plasmas

摘要

Three-dimensional magnetohydrodynamic (MHD) computations of multiple neoclassical tearing modes growths in International Thermonuclear Experimental Reactor plasmas are presented. It is shown that within the MHD framework, these modes do not couple until significant stochastization between two tearing island chains occurs. After stochastization a quick amplitude drop of one or several modes is observed. This behavior is very similar to that observed for example in ASDEX-Upgrade [A. Gude , Nucl. Fusion 42, 833 (2002)]. (c) 2006 American Institute of Physics.