Neutral Beam Injection (NBI) is an important auxiliary heating and driving method for Tokamak devices. The ionization of neutral atoms determines the neutral beam heating(energy and particle deposition profile) andcurrent drive efficiency. In general, the attenuation characteristics of the neutral beam are simulated by using the background plasma parameters and neutral beam parameters, and then the heating and current driving effects of the Tokamak neutral beam are analyzed. Beam emission spectroscopy is a series of characteristic spectral lines radiated by the excitation and deexcitation proc...
