Density limits with different fuelling methods have been compared in HL-2A, i.e. direct gas puffing and supersonic molecular beam injection （SMBI） from outer midplane, and divertor gas fuelling. The maximum densitie...Density limits with different fuelling methods have been compared in HL-2A, i.e. direct gas puffing and supersonic molecular beam injection （SMBI） from outer midplane, and divertor gas fuelling. The maximum densities for low current discharges are 3.4×10^19 m-3, 4.3×10^19 m-3 and 4.7×10^19 m-3 for the 3 kinds of fuelling methods. The corresponding density ratios to Green- wald density limit are 0.9, 1.1, 1.2, respectively. The behavior of density limit disruption is analyzed as well.展开更多
基金National Natural Science Foundation of China (Nos.10675041,10775044)the JSPS-CAS Core-University Program in the field of Plasma and Nuclear Fusion
文摘Density limits with different fuelling methods have been compared in HL-2A, i.e. direct gas puffing and supersonic molecular beam injection （SMBI） from outer midplane, and divertor gas fuelling. The maximum densities for low current discharges are 3.4×10^19 m-3, 4.3×10^19 m-3 and 4.7×10^19 m-3 for the 3 kinds of fuelling methods. The corresponding density ratios to Green- wald density limit are 0.9, 1.1, 1.2, respectively. The behavior of density limit disruption is analyzed as well.
