Measurements of rotational transform due to noninductive toroidal current using motional Stark effect spectroscopy in the Large Helical Device
Measurements of rotational transform due to noninductive toroidal current using motional Stark effect spectroscopy in the Large Helical Device
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DOI：
10.1063/1.1898943
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发表时间：
2005-04
影响因子：
1.6
通讯作者：
K. Ida;M. Yoshinuma;Kiyomasa Y. Watanabe;T. Kobuchi;K. Nagaoka
中科院分区：
文献类型：
--
作者：
K. Ida;M. Yoshinuma;Kiyomasa Y. Watanabe;T. Kobuchi;K. Nagaoka
由负中性束驱动的非感应等离子体电流引起的旋转变换的变化，其值通常小于由螺旋线圈中的外部电流确定的总旋转变换的 10%，在大型螺旋装置中通过动态斯塔克效应光谱进行测量。旋转变换的径向轮廓是通过四组线偏振器、光谱仪和CCD探测器从光束的高能氢原子发射的Hα线中σ分量的偏振角的径向轮廓得到的。测量由中性束驱动的无感环形电流引起的旋转变换变化的径向轮廓。
The change of rotational transform due to noninductive plasma current driven by a negative neutral beam, which has a value typically less than 10% of total rotational transform determined by the external current in the helical coils, is measured in the Large Helical Device with motional Stark effect spectroscopy. Radial profiles of rotational transform are derived from the radial profiles of the polarization angle of the σ component in the Hα line emitted from the high energy hydrogen atom of the beam with four sets of linear polarizers, spectrometers, and CCD detectors. The radial profile of the change in the rotational transform due to the noninductive toroidal current driven by the neutral beam is measured.