Calculation of radiation losses in the electromagnetic trap with the power gain factor Q>=1

Radiation loadings on construction elements of electromagnetic traps (EMT) such as anode diaphragms, cathodes, closing electrodes, first wall are investigated. The geometry. of toroidal multipole with aspect ratio γ=R/r sub(pl)=3, where R and rsub(pl.) is the large and small radii of plasma formation with the number of magnetic slots N=10 and their seiwidth a=0.1 cm is taken as a model for calculation. Magnetic field in slots Bsub(s) is 50a-100 K Gs, plasma radii are 50-150 cm, which corresponds the parameters of the scale of large plasma devices of the tokamak type. It is supposed that to heat plasma electron injection alone will be used. The conclusion is made that emitter and anodes will be subjected to the strongest specific loadings; corpuscular loadings on the first-wall are comparatively moderate and permit to provide a rather long operation pulse of reactor due to slow administration of admixtures into plasma. It is shown that production of electrodes of refractory metals (tungsten, molybdenum), their effective cooling, application of special collectors to decrease particle fluxes to anodes and the following increase of emitter square; some reduction in the specific power of D-T fussion in plasma volume - all these steps will bring about safe and durable exploitation of EMT with Q>1