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中性束注入器(Neutral Beam Injector,简称NBI)是产生高能中性粒子辅助加热托卡马克(EAST)等离子体和驱动电流的装置。基于EAST-NBI装置,应用稀薄气体动力学理论研究分析了EAST-NBI束流输运空间气体粒子物理行为及特征,建立EAST-NBI束流输运空间物理模型,采用蒙特卡罗(M-C)方法及Matlab软件对EAST-NBI束流输运空间气体粒子进行三维编程数值计算模拟,得到EAST-NBI束流输运空间气体粒子分布规律及真空压力呈梯度分布规律。经NBI实验运行验证,吻合NBI实验运行工况,且实现了其真空低温系统的差分功能。为EAST-NBI装置关键部件的结构设计和优化提供工程经验。
The Neutral Beam Injector (NBI) is a device that generates energetic neutral particles that aid in the heating of EAST plasma and drive current. Based on the EAST-NBI device, the physical behavior and characteristics of the gas particles transported by the EAST-NBI beam are studied by the theory of lean gas dynamics. The space physics model of EAST-NBI beam transport is established. The Monte Carlo (MC) And Matlab software were used to simulate the EAST-NBI beam space gas particles in three-dimensional programming. The distribution of gas particles in EAST-NBI beam and the gradient distribution of vacuum pressure were obtained. The NBI experimental run to verify, consistent with NBI experimental operating conditions, and to achieve its vacuum cryogenic system differential function. Provides engineering experience in the structural design and optimization of key components of the EAST-NBI plant.