CFETR中性束注入系统概念设计

Conceptual design of neutral beam injection system for CFETR

为了满足中国核聚变工程实验堆(CFETR)对等离子体加热和电流驱动的要求,从总体布局、束传输系统、束源系统三方面进行了中性束注入系统的概念设计。利用参数计算的方法,根据聚变等离子体的要求明确了中性束注入系统的性能指标和基本布局;利用束传输空间分布程序评估了束传输性能,确定了各功能部件的空间布局结构;在此基础上,确定了束源系统的性能指标和引出系统布局方式,结合当前研发进展,明确了束源的基本技术方案。由此完成了中性束注入系统参数指标、束传输关键尺寸、束源性能指标等设计要求,为后续工程设计奠定了基础。

In order to meet the requirements of plasma heating and current driving in China Fusion Engineering Test Reactor(CFETR),the conceptual design of neutral beam injection system is carried out from three aspects:overall layout,beam transmission system and beam source system.Using the method of parameter calculation,the performance index and basic layout of neutral beam injection system are defined according to the requirements of fusion plasma.The beam transmission performance is evaluated by using the beam transmission spatial distribution program,and the spatial layout structure of each functional component is determined.On this basis,the performance index of the beam source system and the layout mode of the extraction system are determined.Combined with the current research and development progress,the basic technical scheme of the beam source is defined.Through the above work,the design requirements of neutral beam injection system parameter index,beam transmission key size and beam source performance index are formed,which lays a foundation for subsequent engineering design.