Behaviour of compact toroid injected into an external magnetic field
Behaviour of compact toroid injected into an external magnetic field
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注入外部磁场的紧凑环形线圈的行为
DOI：
10.1088/0029-5515/41/11/318
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发表时间：
2001
期刊：
影响因子：
3.3
通讯作者：
H. Kimura
中科院分区：
文献类型：
--
作者：
M. Nagata;N. Fukumoto;H. Ogawa;T. Ogawa;K. Uehara;H. Niimi;T. Shibata;Yoshio Suzuki;Y. Miura;N. Kayukawa;T. Uyama;H. Kimura
在FACT和JFT-2 M装置上对紧凑环（CT）等离子体与外磁场和托卡马克等离子体的相互作用进行了实验研究。快速分幅相机和软X射线发射轮廓测量指示CT等离子体的移位和/或反射运动。新的静电探针测量表明，CT等离子体达到至少高达分界线的放电与1.0-1.4 T的环向场强度，并存在一个尾随等离子体的CT后面。观察到离子饱和电流和磁线圈信号的大幅度波动。功率谱分析表明，这种起伏与CT等离子体团与环向场之间的磁场重联有关。由于霍尔效应，包括大部分拖尾等离子体的CT可以能够在注入器的漂移区中更容易地移动穿过外部磁场。
The interactions of a compact toroid (CT) plasma with an external magnetic field and a tokamak plasma have been studied experimentally on the FACT and JFT-2M devices. Fast framing camera and soft X ray emission profile measurements indicate shift and/or reflection motions of the CT plasma. New electrostatic probe measurements indicate that the CT plasma reaches at least up to the separatrix for discharges with toroidal field strengths of 1.0-1.4 T and that there exists a trailing plasma behind the CT. A large amplitude fluctuation on the ion saturation current and magnetic coil signals is observed. Power spectrum analysis suggests that this fluctuation is related to magnetic reconnection between the CT plasmoid and the toroidal field. The CT, including much of the trailing plasma, may be able to move across the external magnetic field more easily in the drift region of the injector owing to the Hall effect.