I-mode regime has many attractive features for fusion:

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Presentation transcript:

Multi-device studies have established the I-mode regime as robust in a wide operating space I-mode regime has many attractive features for fusion: Te, Ti pedestals give high energy confinement, little power degradation. L-mode particle confinement gives low, steady impurity radiation, even with high Z PFCs. Stationary and ELM-free. Regime now established on Alcator C-Mod, ASDEX Upgrade and DIII-D, mainly with ion B×B drift away from the primary divertor, over a wide range of conditions. BT =1.9-8 T, q95 =2.5-5.2, n*ped =0.17-4.3. With ICRH, NBI and/or ECRH. High BT values open up a wider operational window for I-mode Positive result for ITER at BT 5.3 T.