Experimental demonstration of plasma startup by coaxial helicity injection
Experimental demonstration of plasma startup by coaxial helicity injection
复制标题
同轴螺旋注入等离子体启动的实验演示
DOI：
10.1063/1.1688791
复制
发表时间：
2004
期刊：
影响因子：
--
通讯作者：
R. Smith
中科院分区：
文献类型：
--
作者：
R. Raman;T. Jarboe;B. Nelson;W. T. Hamp;V. Izzo;R. G. O'neill;A. Redd;P. Sieck;R. Smith
报道了同轴螺旋注入（CHI）产生的放电转移到感应操作的实验结果。 CHI 辅助等离子体启动比仅感应操作更稳健，并减少伏秒消耗。切换到感应操作后，CHI 产生的电流从最初的 100 kA 降至 50 kA，然后升至 180 kA，仅使用 30 mV，比单独感应产生的电流高出约 40%。结果表明，在较低密度下启动 CHI 放电会产生较高水平的耦合电流。将 CHI 产生的放电与预充电中央螺线管的感应耦合，仅使用 52 mWb 的中央螺线管通量就产生了 290 kA 的创纪录电流。当中央变压器处于预充电过程中时，也会产生 CHI 放电，在此期间，它会在 CHI 放电上感应出负环路电压。这些重要结果是在 Helicity Injected Torus-II (HIT-II) [T.R. Jarboe，融合技术。 15, 7 (1989...
Experimental results on the transfer of a coaxial-helicity-injection (CHI) produced discharge to inductive operation are reported. CHI assisted plasma startup is more robust than inductive only operation and reduces volt-seconds consumption. After handoff to inductive operation, the initial 100 kA of CHI produced current drops to 50 kA, then ramps up to 180 kA, using only 30 mVs, about 40% higher than that produced by induction alone. Results show that initiation of CHI discharges at lower densities produce higher levels of coupling current. Coupling a CHI produced discharge to induction from a precharged central solenoid has produced record currents of 290 kA using only 52 mWb of central solenoid flux. CHI discharges can also be generated while the central transformer is in the process of being precharged, during which period it induces a negative loop voltage on the CHI discharge. These significant results were obtained on the Helicity Injected Torus-II (HIT-II) [T.R. Jarboe, Fusion Technol. 15, 7 (1989...