More sophisticated multi-mode feedback control systems are being devised to suppress several modes of plasma instability simultaneously. Concepts and designs for remote sensors and suppressors appropriate for fusion systems are also being developed in our laboratory. Specifically, we are studying the anomalous particle and thermal transport due to the ion temperature gradient instabilities, which are of great concern in fusion reactors. Anomalous transport due to a plasma instability is a strong function of the nonlinearly saturated amplitude of the instability. We study the problem of saturated spectra and the consequent anomalous diffusion as a problem in nonlinear statistical mechanics.
Anomalous diffusion is theoretically and experimentally determined and compared.