Control of non-inductive current in Heliotron J
Control of non-inductive current in Heliotron J
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DOI：
10.1088/0029-5515/47/8/039
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发表时间：
2007-08
期刊：
影响因子：
3.3
通讯作者：
G. Motojima;K. Nagasaki;M. Nosaku;H. Okada;K. Watanabe;T. Mizuuchi;Y. Suzuki;S. Kobayashi;K. Sakamoto;S. Yamamoto;K. Kondo;Y. Nakamura;H. Arimoto;S. Watanabe;S. Matsuoka;T. Tomokiyo;A. Cappa;F. Sano
中科院分区：
文献类型：
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作者：
G. Motojima;K. Nagasaki;M. Nosaku;H. Okada;K. Watanabe;T. Mizuuchi;Y. Suzuki;S. Kobayashi;K. Sakamoto;S. Yamamoto;K. Kondo;Y. Nakamura;H. Arimoto;S. Watanabe;S. Matsuoka;T. Tomokiyo;A. Cappa;F. Sano
在螺旋轴Heliotron装置Heliotron J中研究了电子回旋加热等离子体的无感电流。通过正、负磁场的对比实验，分离了自举电流和EC电流。估计的自举电流被认为是由磁场配置的影响。它的增加与增加的颠簸分量的磁场谱，这与新古典预测使用SPBSC代码计算。相对于磁场倾斜发射驱动的EC电流强烈地依赖于场配置和EC功率沉积的位置。当EC功率沉积在磁轴上时，EC电流增强。最大EC电流为IEC =-4.6 kA，电流驱动效率为η = neRIp/PEC = 8.4 × 1016 A W-1 m-2。EC电流的流动方向取决于沉积EC功率的磁场涟漪结构。
Non-inductive currents of electron cyclotron heated plasmas have been examined in the helical-axis heliotron device, Heliotron J. The bootstrap and EC currents were separated by comparing experiments with positive and negative magnetic field. The estimated bootstrap current was found to be affected by the magnetic field configuration. It increases with an increase in the bumpy component of the magnetic field spectrum, which agrees well with a neoclassical prediction calculated using the SPBSC code. The EC current driven by oblique launch with respect to the magnetic field strongly depends on the field configuration and the location of the EC power deposition. The EC current is enhanced when the EC power is deposited on the magnetic axis. The maximum EC current is IEC = −4.6 kA and the current drive efficiency is η = neRIp/PEC = 8.4 × 1016 A W−1 m−2. The flow direction of the EC current depends on the magnetic field ripple structure where the EC power is deposited.