Control of profiles and transport by ion Bernstein waves in the Hefei Tokamak-7
Control of profiles and transport by ion Bernstein waves in the Hefei Tokamak-7
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DOI：
10.1063/1.1603745
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发表时间：
2003-08
影响因子：
2.2
通讯作者：
B. Wan;Yan-ping Zhao;Jian-gang Li;Junyu Zhao;Guosheng Xu;M. Song;Yuejiang Shi;Y. Jie;Yubao Zhu;Haiqing Liu;Yuchun Xu;Liqun Hu;B. Ling;K. Gentle;B. Rowan;P. Phillipe;H. Huang;T. Watari;T. Seki
中科院分区：
文献类型：
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作者：
B. Wan;Yan-ping Zhao;Jian-gang Li;Junyu Zhao;Guosheng Xu;M. Song;Yuejiang Shi;Y. Jie;Yubao Zhu;Haiqing Liu;Yuchun Xu;Liqun Hu;B. Ling;K. Gentle;B. Rowan;P. Phillipe;H. Huang;T. Watari;T. Seki
在合肥托卡马克-7装置上，研究了离子伯恩斯坦波(IBW)加热等离子体在24、27和30 MHz三个频率下的电子压强分布和输运行为。如果选择合适的离子回旋共振层，可以实现电子压力分布整体峰化和局部陡化的轴上和离轴电子加热。除了24 MHz的情况外，观察到IBW加热的等离子体约束的改善。锯齿形热脉冲的传播明显降低了电子的局部热输运。在IBW离轴加热模式下，扩展了高性能等离子体体积，从而改善了整体等离子体约束。这些研究表明，IBW是一种潜在的强大工具，可以主动控制等离子体的分布和传输。
Electron pressure profile and transport behaviors in ion Bernstein waves (IBW) heated plasmas were investigated at three frequencies (24, 27, and 30 MHz) in the Hefei Tokamak-7. Both on-axis and off-axis electron heating with global peaked and locally steepened electron pressure profiles were realized, if the ion cyclotron resonant layer was properly selected. Improvement of the IBW-heated plasma confinement was observed except in the 24 MHz case. Reduction of the local electron heat transport was evident from sawtooth heat pulse propagation. High performance plasma volume was extended in the IBW off-axis heating mode, which resulted in improvement of the global plasma confinement. These studies demonstrate that IBW is a potentially powerful tool for active control of plasma profiles and transport.