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The Controllable L-H Transition Realized by Injection of Electrons

A new way to get and control H mode is proposed. Theoretic analysis and calculation show that the electron injection by pulsed E X B drift can trigger the H mode without direct contact with plasma and could realize the feedback control for the H mode. A repeatable pulsed field and electron beam system with a frequency of 1 kHz that has been demonstrated enough for HT-6M Tokamak experiment are given in detail.