EAST全超导托卡马克等离子体击穿模拟  

EAST Superconductor Tokamak Plasma Breakdown Simulation

作　　者：张馨予[1] 肖炳甲[2] 罗正平[2] 

机构地区：[1]昆明理工大学,昆明650000 [2]中国科学院等离子体物理研究所,合肥2300031

出　　处：《核电子学与探测技术》2008年第5期878-882,共5页Nuclear Electronics & Detection Technology

基　　金：EAST国家大科学工程"计投资(1998)1303号项目"资助

摘　　要：托卡马克装置的等离子体击穿有两个关键因素:合适的环电压和真空区域尽可能大的零场区。极向场线圈电流放电引起真空室感应涡流的产生,感应涡流对零场的优化、环电压的建立都有着不容忽视的影响。文章在对EAST真空室简化和划分的基础上,求解出真空室上感应涡流在等离子体击穿阶段的分布,对环电压的建立和零场区的变化情况进行了有效模拟。The plasma start-up of Tokamak experiment needs enough loop voltage and a well null field in the vacuum vessel. The current of poloidal field coils varied with time , and induced an eddy current in vacuum vessel. Eddy current in vacuum vessel play an very important role during the initial plasma breakdown and plasma formation phases. By dividing the vacuum vessel into 120 elements, eddy current distribution has been calculated with Runge-Kutta. At the end of this paper, a valid simulation of EAST breakdown phases has been displayed.

关 键 词：托卡马克 零场区 环电压 击穿 感应涡流 

分 类 号：O531[理学—等离子体物理]