Abstract:Start-up is one of the critical phases for tokamak discharge. The electron drift injection (EDI) system has been developed on J-TEXT for start-up studies. The experiment of breakdown with EDI assisted has been conducted, which verified the effect of pre-ionization by EDI to achieve start-up at a lower Ohmic field voltage. A 0-dimensional model has been developed to explain the effect of EDI quantitatively. The comparison between the experiment and simulation verified the credibility of this model. Based on thi… Show more
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