Localized driven current profile by electron cyclotron (EC) waves is measured on the JT-60U tokamak, considering transient inductive current. The inductive current is derived from temporal evolution of internal magnetic field, which is evaluated by reconstructions of MHD equilibria with a spline function of total current and with motional Stark effect polarimetry. The analysis clearly shows that the EC-driven current is in a thin layer of about 10% of the minor radius of the plasma. The determined EC-driven current agrees with the one calculated by ray tracing and Fokker-Planck codes. The analysis shows the change in driven current profile when the deposition location of EC waves is changed. The current drive efficiency is about 5 x 10(18) A W-1 m(-2) at an electron temperature of 7 keV. [References: 15]
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机译：考虑到瞬态感应电流，在JT-60U托卡马克上测量了由电子回旋（EC）波产生的局部驱动电流曲线。感应电流是从内部磁场的时间演变中得出的，该磁场演变是通过重构MHD平衡来实现的，该MHD平衡具有总电流的样条函数和运动斯塔克效应极化法。分析清楚地表明，EC驱动电流处于薄层中，薄层约为等离子体次半径的10％。所确定的EC驱动电流与通过射线追踪和Fokker-Planck码计算出的电流一致。分析表明，当EC波的沉积位置发生变化时，驱动电流分布也会发生变化。在7 keV电子温度下，电流驱动效率约为5 x 10（18）A W-1 m（-2）。 [参考：15]
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