Numerical Simulation Research and Implementation of Neutral Beam Injector Beam Power Based on a Gaussian Beam Model with the Uniform Emitting Surface

Abstract

Abstract Nuclear fusion is one of the most effective methods to solve future energy problems. In this field, Tokamak is a machine that confines a plasma using magnetism, and the way of neutral beam injection (NBI) is considered one of the most effective auxiliary heating methods for it. The necessary numerical simulation of the NBI system will provide scientific data guidance for the safe and effective operation of the experiment. More importantly, the high-energy particles produced by the neutral beam injector could cause severe damage to the Tokamak device and injector itself. Based on the above requirements, the transmission characteristics of the neutral beam are analyzed, and a calculation mode of the beam intensity is studied in this paper. Moreover, the energy deposition of the beam power is simulated by the C++ program platform, and the beam intensity is visualized. After testing, the stability of the program is demonstrated, and the data obtained from the experiment provide the necessary support for setting the parameters in the neutral beam injector. Meanwhile, the simulations of power deposition at different locations provide indispensable references for subsequent improvements in the design of the neutral beam injector.