Two-fluid burning-plasma analysis for magnetic confinement fusion devices

Physics of burning plasmas in toroidal magnetic confinement devices

Some of the crucial physics aspects of burning plasmas magnetically confined in toroidal systems are presented from the viewpoint of nonlinear dynamics. Most of the discussions specifically refer to tokamaks, but they can be readily extended to other toroidal confinement devices. Particular emphasis is devoted to fluctuation induced transport processes of mega electron volts energetic ions and ...

Alpha Heating and Burning Plasmas in Inertial Confinement Fusion.

Estimating the level of alpha heating and determining the onset of the burning plasma regime is essential to finding the path towards thermonuclear ignition. In a burning plasma, the alpha heating exceeds the external input energy to the plasma. Using a simple model of the implosion, it is shown that a general relation can be derived, connecting the burning plasma regime to the yield enhancemen...

Computational challenges in magnetic-confinement fusion physics

Magnetic-fusion plasmas are complex self-organized systems with an extremely wide range of spatial and temporal scales, from the electron-orbit scales (⇠10 11 s,⇠10 5 m) to the di�usion time of electrical current through the plasma (⇠102 s) and the distance along the magnetic field between two solid surfaces in the region that determines the plasma–wall interactions (⇠100m). The description of ...

UWFDM-1155 Need for Special Burning Module in Fusion Devices to Transmute Fusion High-Level Waste

Modeling Energy Confinement in Plasma Devices by Neural Networks

Energy confinement data of large fusion devices are analyzed in terms of reduced variables which consist of certain combinations of the machine variables. The goal is to predict the single variable behaviour from a data set with entries which differ in more than one variable setting from each other. Bayesian neural networks are used to model the hyper-surface evolving for the energy confinement...