Operation with 1 MA Plasma Current in EAST

Discharge with a plasma current of 1 MA at a line-averaged density of 1.8× 10^19 m^-3 was realized in EAST, a fully superconducting tokamak. The key issues to achieve the discharge with 1 MA plasma current include both early shaping and LHCD assistance during start-up phase to extend the voltage mar...

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Bibliographic Details
Published in:Plasma science & technology 2011-02, Vol.13 (1), p.1-2
Main Author: 钱金平 龚先祖 李建刚 万宝年 凌必利 沈飚 提昂 钟国强 林士耀 常加峰 王华忠
Format: Article
Language:English
Subjects:
低杂波电流驱动
平均密度
放电电流
电流放电
等离子体放电
等离子体电流
超导托卡马克
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Summary:Discharge with a plasma current of 1 MA at a line-averaged density of 1.8× 10^19 m^-3 was realized in EAST, a fully superconducting tokamak. The key issues to achieve the discharge with 1 MA plasma current include both early shaping and LHCD assistance during start-up phase to extend the voltage margin of poloidal field （PF） coils for easier plasma control, an optimization of the control methodology for PF coils to avoid over-current fault and a very good wall condition. A better wall condition was achieved mainly by extensive Lithium coating. Both stationary H- mode and diverted plasma discharge of 100 s were also obtained.
ISSN:1009-0630
DOI:10.1088/1009-0630/13/1/01