DOI: 10.1088/1009-0630/11/4/03 View full text |Buy / Rent full text

Abstract: 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 Greenwald density limit are 0.9, 1.1, 1.2, respectively. The behavior of density limit disruption is analyzed as well.

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