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It is an important subject to improve the plasma confinement for fusion plasmas. The plasma confinement is sensitive to the plasma edge conditions. The L-H mode transition is related to the edge radial electrical field E_r, the gradient of E_r and the poloidal rotation velocity. In the meantime, the edge plasma radial transport is relates also to the change of poloidal electrical field E_θ. The first L-H mode transition was observed on ASDEX with NBI. This result indicated that the edge fluctuations, the radial transport and the interaction between the wall and the limiters were all reduced and the plasma confinement was improved. NBI and ICRH ex
It is an important subject to improve the plasma confinement for fusion plasmas. The LH mode transition is related to the edge radial electrical field E_r, the gradient of E_r and the poloidal rotation velocity. In the meantime, the edge plasma radial transport is also to change the poloidal electrical field E_θ. The first LH mode transition was observed on ASDEX with NBI. This result indicates that the edge fluctuations, the radial transport and the interaction between the wall and the limiters were all reduced and the plasma confinement was improved. NBI and ICRH ex