A. Schlueter

Equilibrium and Stability Studies with the 3D MHD Code Tube

Abstract TUBE is a 3D code for computing ideal MHD equilibrium and stability by minimizing the potential energy of the system in successive iteration steps over all points of the spatial grid. The independent variables are chosen such that s = const describes a magnetic surface and, together with a linear relation between the periodic variables u and v , specifies a line of force on this surface. These variables are Lagrangian in the sense that the line of force through a certain triple u , v , s stays the same throughout the iteration procedure. The dependent variables describe the position corresponding to the grid points of u , v , s in real space. The rate of convergence of the iteration schemes implemented and the extrapolation of the results to the limit of an infinitely fine grid are extensively studied. TUBE results are compared with those of other codes and with analytical results. The TUBE code is described in some detail.

Kernfusion und das Energieproblem

The present understanding of the physics and technology problems of confining a hot plasma ring by magnetic fields and of heating it to such temperatures that thermonuclear fusions between deuterium and tritium nuclei provide the energy required to maintain this temperature seems to allow to predict the possibility of a self-sustaining thermonuclear reactor. Imbedding this chance into world energy scenarios for the next fifty years, it is shown that fusion reactors of a type of which each may supply about ten slow fission reactors with fissionable material may play a critical rôle by drastically reducing the number of required fast fission breeder reactors.

Monte Carlo Simulation of Neoclassical Confinement in Finite-Beta Helias Equilibria

Abstract The beneficial effect of finite β on neoclassical confinement is demonstrated in Helias configurations. Equilibrium and transport calculations were performed for up to 0.15.

Nuclear Fusion with Magnetic Containment

View into the interior of the ASDEX vacuum vessel during a typical tokamak divertor discharge in natural colour. The bright parts correspond to the surface part of the plasma which is deflected into the upper and lower divertor chambers which act as “vacuum cleaners”. On the right hand side the trace of an injected pellet consisting of solid deuterium is seen. The left end of the trace corresponds to the point where this pellet is completely evaporated. A part of the trace is mirrored on an observational plane mirror