全超导托卡马克中性束注入系统离子吞食器工程设计  

Engineering design of ion dump for EAST neutral beam injection system

作　　者：陶玲[1] 胡纯栋[1] 谢远来[1] 许永建[1] 

机构地区：[1]中国科学院等离子体物理研究所,合肥230031

出　　处：《强激光与粒子束》2013年第10期2687-2692,共6页High Power Laser and Particle Beams

基　　金：国际磁约束核聚变能发展研究专项(2013GB101002)

摘　　要：结合全超导托卡马克中性束注入系统(EAST NBI)的工作原理,采用水冷热测靶形式的离子吞食器回收和测量未被中性化粒子。根据EAST NBI系统对离子吞食器物理特性、空间限制、测量需求及冷却性能等方面的要求,对靶板材料选择、结构设计及布置等进行了分析,给出了离子吞食器具体设计方案。该方案单侧吸收靶板呈V形结构,单个靶板冷却方式采用内置并联冷却水管结构。根据该方案加工获得了EAST NBI系统离子吞食器装置。仿真和实验校验结果验证了本装置可以满足NBI系统4MW高功率、10s长脉冲的运行要求。Considering the working principle of the neutral beam injection system （NBI） for experimental advanced super- conducting tokamak （EAST）, the ion dump using calorimetric method with cooling tube inside was proposed to absorb the un- neutralized ions and measure the loaded energy. According to the physical characteristics of EAST NBI, together with the engi- neering limitation and requirement for measurement and cooling method, the detailed design decision of ion dump was given after the design performance indexes were analyzed, especially the dump board, including the material, design and arrangement of the cooling way inside. The proposed ion dump of V-shape with the cooling tube inside in this study was constructed and tested in the test bed of EAST NBI, and the feasibility of ion dump was proved by the experiment results under the working condition of 4 MW power and 10 s pulse length. This study lays a solid foundation to realize the experiment target of high power with high parame- ters and steady state for EAST NBI in the next step.

关 键 词：全超导托卡马克 中性束注入 离子吞食器 高热流部件 高功率 长脉冲 

分 类 号：O532.26[理学—等离子体物理]