EAST中性束注入角度的NUBEAM模拟研究  

Simulation of neutral beam injection on EAST by NUBEAM

作　　者：王进芳[1] 吴斌[1] 胡纯栋[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：《核聚变与等离子体物理》2011年第2期139-145,共7页Nuclear Fusion and Plasma Physics

基　　金：中国科学院知识创新工程青年人才领域专项前沿项目(075FCQ012C);国家自然科学基金项目(10975160)

摘　　要：采用蒙特卡罗程序NUBEAM对EAST NBI上的中性束注入角度(中性束系统中心线与注入窗口轴线的夹角)进行了分析。讨论了中性束注入角度对电流驱动效率、加热效率和束的穿透功率的影响,对EAST NBI系统选取了一个最优的注入角度。模拟结果表明:对EAST NBI系统,在典型的EAST实验参数和实际工程允许的范围内,19.5°是最优的注入角度。在此注入角度下,可以通过增大等离子体密度的方法来进一步提高加热效率和电流驱动效率,并减少束的穿透功率。The role of the injection angle（the angle between the axis of the neutral beam injection system and the center of the injection window） on the neutral beam current drive,heating efficiency and beam shine-through power are studied with NUBEAM code to explore the optimum injection angle for the EAST NBI system.From the simulation results,under the limitation of the actual project,it is indicated that an injection angle of 19.5° is the optimum for EAST with its typical experimental parameters.With this injection angle,the increase of the plasma density can improve the current drive and heating efficiency and reduce the beam shine-through power.

关 键 词：中性束注入 注入角度 束穿透 数值模拟 

分 类 号：O532.11[理学—等离子体物理] O532.26[理学—物理]