University of Washington, Seattle, Washington 98105, USA.
Phys Rev Lett. 2011 Oct 14;107(16):165005. doi: 10.1103/PhysRevLett.107.165005. Epub 2011 Oct 12.
The first sustainment of toroidal plasma current of 50 kA at up to 3 times the injected currents, added in quadrature, using steady inductive helicity injection is described. Separatrix currents-currents not linking the helicity injectors-are sustained up to 40 kA. Decreases in the n=1 toroidal mode of the poloidal magnetic field at higher current amplifications indicate more quiescent, direct toroidal current drive. Results are achieved in HIT-SI (with a spheromak of major radius 0.3 m) during deuterium operations immediately after helium operation. These results represent a breakthrough in the development of this new current drive method for magnetic confinement fusion.
使用稳定感应螺旋注入，在注入电流的 3 倍以上的情况下，首次维持了 50kA 的环形等离子体电流。分离边界电流（不连接螺旋注入器的电流）维持在 40kA 以上。在更高的电流放大倍数下，n=1 环形模式的极向磁场减少表明更安静、直接的环形电流驱动。在氦气运行后立即进行氘气运行期间，在 HIT-SI（主半径为 0.3 米的球形环）中实现了这些结果。这些结果代表了这种新的磁约束聚变电流驱动方法发展的突破。
