ICRF heating of TFTR deuterium supershot plasmas in the 3He minority regime

作者: G Taylor , J R Wilson , R C Goldfinger , J C Hosea , D J Hoffman

DOI: 10.1088/0741-3335/36/3/010

关键词: Atmospheric-pressure plasmaLimiterDielectric heatingHelium-3PlasmaAlpha particleDeuteriumMaterials scienceAtomic physicsNeutral beam injection

摘要: The increased core electron temperature produced by ICRF heating of TFTR, D-T neutral-beam-heated supershot plasmas is expected to extend the alpha-particle slowing down time and hence enhance central pressure. In preparation for TFTR operational phase, which started in late 1993, a series experiments were conducted on explore effect performance stability low-recycling, deuterium 3He minority regime. coupling up 7.4 MW 47 MHz power full size (R approximately 2.62 m, 0.96 m), minority, supershots heated with 30 neutral beam injection has resulted significant increase ( Delta Te=3-4 keV). Simulations equivalent predict that such should result 60% an enhancement about 30% alpha Future be at powers 12.5 during upcoming campaign may even greater enhancements parameters. This paper presents results from performed axial toroidal magnetic field 4.8 T, where resonance was within 0.1-0.15 m plasma core. Combined these reached record levels over 37 MW, allowed exploration loading limits carbon limiter tiles. current operated 1.85 2.2 MA sawtooth suppression observed higher current.

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