超伝導強磁場トカマクTRIAM-1Mにおける高性能・定常プラズマ研究の最近の進展

概要

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On the superconducting high-field tokamak TRIAM-1M, the high performance plasmas has been demonstrated. A high ion temperature(HIT)mode with T_i≈2.5keV was sustained for longer than 70s in the limiter configuration. In the single null divertor configuration, the ion temperature has been achieved at 5keV as the results of the improvement of plasma-wall interaction. By improvement of the time response of position control, the single null divertor configuration with, x=1.5 can be also sustained successfully for 1min. These high performance plasmas have been obtained using 2.45GHz lower hybrid current drive(LHCD). The current density profile can be controlled sufficiently longer than the current diffusion time using both 2.45GHz and 8.2GHz LHCD. The effects on the plasma wall of high energy neutral produced via charge exchange process has been also made clear in the HIT plasma.
社団法人プラズマ・核融合学会の論文
1999-03-25