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中性束注入(Neutral Beam Injection)加热是磁约束核聚变装置上主要的辅助加热手段。强流离子束中性化是中性束注入的关键步骤,它直接决定了中性束的注入功率,进而影响对等离子体的加热效果。本文分析了EAST中性束注入器束中性化区的气流特性,发展了基于直接模拟蒙特卡洛(DSMC)方法的气流模拟程序,并用于EAST中性束注入器束中性化区的模拟分析和优化设计。
Neutral Beam Injection Heating is the primary means of secondary heating on magnetic confinement fusion devices. High flux ion beam neutralization is a key step in neutral beam injection, which directly determines the injected power of the neutral beam, which in turn affects the heating effect on the plasma. In this paper, the gas flow characteristics of the EAST neutral beam injector neutralization zone are analyzed. A flow simulation program based on direct simulation Monte Carlo (DSMC) method is developed and used to simulate the EAST neutral beam injector neutralization zone Analyze and optimize design.