Numerical Simulation of the Neutralized α Particle Transport near the Divertor Plate Region

摘要: The statistical random sample technique has been utilized to develop a new Monte-Carlo algorithm MCHET code recently. A large amount of comparative simulation calculation work relating the neutralized alpha-particle transport performed. As result, we have found beneficial optimizing plasma density and temperature profiles in divertor region, with great resulting improvement helium ash removal efficiency by simultaneously externally applied proper RF ponderomotive force potential energy vicinity plate region. In this dominant atomic processes electron impact ionization elastic scattering ions are included. thermal streaming motion along magnetic field is taken into consideration. Important conclusions obtained that probability neutral turning back target will increase at least 50% for optimized combination density, perpendicular electric field. For FEB (Fusion Experimental Breeder) reactor design parameters, enhancement from 0.5 0.9 can be obviously obtained. meantime, tritium inventory may also reduced some extent.