Demonstration of 300 kA CHI-startup current, coupling to transformer drive and flux savings on NSTX
Demonstration of 300 kA CHI-startup current, coupling to transformer drive and flux savings on NSTX
复制标题
在 NSTX 上演示 300 kA CHI 启动电流、变压器驱动耦合和磁通节省
DOI：
10.1088/0029-5515/51/6/063008
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发表时间：
2011
期刊：
影响因子：
3.3
通讯作者：
H. Yuh
中科院分区：
文献类型：
--
作者：
B. Nelson;T. Jarboe;D. Mueller;R. Raman;M. Bell;J. Menard;M. Ono;A. Roquemore;V. Soukhanovskii;H. Yuh
在美国国家球形环实验（NSTX）中，由瞬态同轴螺旋注入（CHI）形成的放电首次获得了300 kA的峰值电流。CHI-started放电耦合到感应，并斜升到超过1 MA。与没有CHI的相同感应驱动器的放电相比，产生了高达400 kA的额外环形电流。这些CHI-inductive coupled discharge展示了比标准NSTX仅电感放电更节省的通量，需要显著更少的Transformer通量来达到1 MA的环形电流，以及表现出更高的伸长率和更低的内部电感。这些结果表明，在NSTX和未来的环形器件中，CHI具有很大的电流产生能力。
Discharges formed by transient coaxial helicity injection (CHI) in the National Spherical Torus Experiment (NSTX) have attained peak currents of 300 kA for the first time. CHI-started discharges are coupled to induction, and ramped up to over 1 MA. Up to an additional 400 kA of toroidal current is produced, compared with discharges with the same inductive drive without CHI. These CHI-inductively coupled discharges demonstrate flux savings over standard NSTX inductive-only discharges, requiring significantly less transformer flux to reach 1 MA of toroidal current, as well as exhibiting higher elongation and lower internal inductance. These results indicate the potential for substantial current generation capability by CHI in NSTX and in future toroidal devices.