Loss mechanisms of travelling wave direct energy converters for D-~3He FRC fusion reactors

摘要

Loss mechanisms of TWDEC for a D-~3He fuelled FRC fusion reactor are studied with numerical analysis. (1) the self-excitation of a travelling wave has been attained with external electric circuits, which shows the conversion efficiency is about 70-73/100. (2) Three-dimensional behavior has been studied by axisymmetric approximation, showing that the loss related to the radial non-uniformity effect without collision with grids is about 5/100. (3) The loss related to the collision with grids is the most important, being about 11/100.