ICRF wall conditioning and plasma performance on EAST
ICRF wall conditioning and plasma performance on EAST
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DOI：
10.1016/j.jnucmat.2009.01.226
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发表时间：
2009-06
影响因子：
3.1
通讯作者：
Xiang Gao;J. Hu;Y. Zhao;X. Gong;Yaowei Yu;G. Luo;Houyang Y Guo;S. Morita;Liqun Hu;Jieling Chen;Hao Wang;X. M. Wang;X. Zhang;Jiuyuan Li
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文献类型：
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作者：
Xiang Gao;J. Hu;Y. Zhao;X. Gong;Yaowei Yu;G. Luo;Houyang Y Guo;S. Morita;Liqun Hu;Jieling Chen;Hao Wang;X. M. Wang;X. Zhang;Jiuyuan Li
在EAST超导托卡马克装置上进行了离子回旋共振频率（ICRF）壁面处理。它包括ICRF在发射之间的清洁，与ICRF等离子体相关的硼化，以及与ITER相关的全金属壁材料的ICRF氧化。为EAST的壁面调节研制了专用的ICRF天线。射频频率为30 MHz，射频系统最大输出功率为300 kW。脉冲ICRF波的占空时间设定为0.3s开，1.2s关，存在1- 2 T的环形磁场。在ICRF壁调节之后，获得了单零和双零配置的启动、斜升和等离子体成形的优化。在EAST上实现了高密度、高等离子体电流和长脉冲放电。
ICRF (ion cyclotron resonance frequency) wall conditioning was performed on EAST superconducting tokamak. It included ICRF cleaning in-between shots, boronization associated with ICRF plasmas, and ICRF oxidation with an ITER-relevant full metallic wall material. A dedicated ICRF antenna was developed for wall conditioning on EAST. The RF frequency is 30MHz, and maximum output power of RF system is 300kW. The duty time of pulsed ICRF wave was set at 0.3s on and 1.2s off in presence of the toroidal magnetic field of 1–2T. Optimization of start-up, ramp-up and plasma shaping for single and double-null configurations were obtained following the ICRF wall conditioning. High density, high plasma current and long pulse discharges were achieved on EAST.