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等离子体科学和技术(英文版) 등리자체과학화기술(영문판)
PLASMA SCIENCE & TECHNOLOGY
2003年 1期 1641-1650 ,共10页

毛剑珊%P.Phillips%罗家融%徐宇鸿%赵君煜%张先梅%万宝年%张守银%揭银先%吴振伟%胡立群%刘胜霞%石跃江%李建刚%HT-6M＆HT-7 group

모검산%P.Phillips%라가융%서우홍%조군욱%장선매%만보년%장수은%게은선%오진위%호립군%류성하%석약강%리건강%HT-6M＆HT-7 group

modulated toroicdal current%superconducting tokamak

The Experiments of Modulated Toroidal Current were done on the HT-6M tokamakand HT-7 superconducting tokamak. The toroidal current was modulated by programming theOhmic heating field. Modulation of the plasma current has been used successfully to suppressMHD activity in discharges near the density limit where large MHD m = 2 tearing modes weresuppressed by sufficiently large plasma current oscillations. The improved Ohmic confinementphase was observed during modulating toroidal current (MTC) on the Hefei Tokamak-6M (HT-6M) and Hefei superconducting Tokamak-7 (HT-7). A toroidal frequency-modulated current,induced by a modulated loop voltage, was added on the plasma equilibrium current. The ratio ofA.C. amplitude of plasma current to the main plasma current △Ip/Ip is about 12% ～ 30%. Thedifferent formats of the frequency-modulated toroidal current were compared.