Wide-Pedestal QH-mode Initiated and Sustained with Zero Injected NBI torque throughout, and Sustained with Dominant Electron Heating (77% ECH power) Achieved.

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Glenn Bateman Lehigh University Physics Department

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Presentation transcript:

Wide-Pedestal QH-mode Initiated and Sustained with Zero Injected NBI torque throughout, and Sustained with Dominant Electron Heating (77% ECH power) Achieved zero injected NBI torque throughout Confinement improves with electron heating Te internal transport barrier forms due to electron heat pinch Pinch measured by Fourier analysis: increases R/LTe by 2.4x Dominantly electron-heated Wide Pedestal QH-mode is an attractive scenario for ITER Transition from QH-Mode to 65% wider and 60% higher pedestal H98y2 increases 45% Pedestal regulated by turbulence No ELMs or low mode number MHD ITER collisionality Ernst, Burrell, Petty, Barada, Chrystal et al, EX/2-2 (No ELMs) D. R. Ernst et al., Viability of Wide Pedestal QH-Mode for Burning Plasma Operation, EX/2-2