Stable Sustainment of Plasmas with Electron Internal Transport Barrier by ECH in the LHD
Plasma physics and controlled fusion(2017)
摘要
The long pulse experiments in the Large Helical Device has made progress in sustainment of improved confinement states. It was found that steady-state sustainment of the plasmas with improved confinement at the core region, that is, electron internal transport barrier (e-ITB), was achieved with no significant difficulty. Sustainment of a plasma having e-ITB with the line average electron density n(e_ave) of 1.1 x 10(19) m(-3) and the central electron temperature T-e0 of similar to 3.5 keV for longer than 5 min only with 340 kW ECH power was successfully demonstrated.
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关键词
long pulse discharge,electron cyclotron heating,internal transport barrier,LHD
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