Azimuthal distribution of the flux of high-energy. cap alpha. particles to the chamber wall in an axisymmetric tokamak

The efficiency of the confinement of high-energy ..cap alpha.. particles (the products of the thermonculear reaction) in an axisymmetric tokamak reactor is analyzed. The number and spatial distribution of these particles which escape to the wall of the discharge chamber due to toroidal drift are found. Concrete calculations are carried out on the basis of the parameters of the T-20 tokamak fusion reactor currently being designed. It is shown that toroidal drift in this apparatus does not lead to any substantial loss of high-energy ..cap alpha.. particles from the plasma.