关键词: HL-2A 装置, 拉长比, 三角形变, 位形设计

Abstract:

A code named SE which is based on MATLAB language for editing and designing plasma shape is introduced, with its design principle, main function, operation interface and operation steps. The correctness of SE is proved effectively with traditional code SWEQU. Furthermore, these two codes are used to design and confirm the discharge parameters of two plasma shapes with medium elongation and triangularity. In order to achieve shapes with higher elongation and triangularity, the limit of circular cross section must be broken by using upper divertor coils. Finally, a plasma shape with higher elongation and triangularity is designed and its discharge parameters are provided with SE code. The design results demonstrate that with upper divertor coils energized, new plasma shapes with higher elongation and triangularity can obtained on HL-2A tokamak. These new plasma shapes lay solid foundation for improving the plasma quality on HL-2A tokamak.