Controllability of driven current profile in ECCD on ITER
Controllability of driven current profile in ECCD on ITER
复制标题
ITER 上 ECCD 驱动电流分布的可控性
DOI：
10.1016/s0920-3796(00)00476-2
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发表时间：
2001
影响因子：
1.7
通讯作者：
A. Fukuyama
中科院分区：
文献类型：
--
作者：
K. Hamamatsu;A. Fukuyama
研究了国际热核聚变实验堆（ITER）中长径比机器方案参数对O模波基本共振驱动电流剖面可控性的影响。驱动电流的数值计算使用完全相对论伴随方法，我们已经从非相对论的一个扩展。通过改变环向和极向注入角，获得了在目标位置处具有最大电流密度的电流驱动的最佳方向。波的发射位置影响最佳注入角和驱动电流分布。还研究了驱动电流分布对光束发散角的依赖关系。当束流从赤道面注入时，在r = 0.5a的外围区域，最大电流密度减小，电流剖面宽度变宽。从远离赤道面的位置注入，局部电流分布保持在r = 0.4a的区域内。
The controllability of current profile driven by the fundamental resonance of the O-mode wave is examined for the parameters of the Intermediate Aspect ratio Machine option of the International Thermonuclear Experimental Reactor (ITER). The driven current is numerically evaluated by using the full relativistic adjoint method which we have extended from the non-relativistic one. By changing both the toroidal and poloidal injection angles, the optimum direction to drive a current with maximum current density at the aimed position is obtained. The position of wave launching affects the optimum injection angles and the driven current profile. The dependence of driven current profile on beam divergence is also examined. When the beam is injected from the equatorial plane, the maximum current density is reduced and the width of current profile becomes wide in the outer region of r≳0.5a. The localized current profile is kept well within the region of r≳0.4a by injection from a location away from the equatorial plane.