Performance Optimization of the Electrostatic Accelerator for DTT Neutral Beam Injector

The main purpose of the Divertor Tokamak Test (DTT) facility is to study alternative solutions mitigate issue power exhaust under integrated physics and technical conditions relevant for an International Thermonuclear Experimental Reactor (ITER) a DEMOnstration Power Plant (DEMO). DTT will be equipped with 510-keV, 40-A neutral beam injector (NBI) based on negative deuterium ion particles, designed yield about 10 MW tokamak. strongly triangular shape ITER-like multifocusing strategy required different approach than more conventional in designing electrostatic plates order guarantee desired deflection. This article describes performance optimization process carried out NBI system. In particular, new design concept accelerator grids has been implemented, hyperlens (HGs): additional lens-like profile, imparting each separate beamlet necessary exit deflection without deformation.