Recent I-mode investigations from the ASDEX Upgrade tokamak are reported. It is shown that neutral-beam-injection heated I-modes can be stationary, which is important in terms of extrapolability towards future fusion devices. Furthermore, detailed studies on the weakly coherent mode are reported. In particular, experimental observations point...
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April 4, 2022 (v1)PublicationUploaded on: March 25, 2023
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September 17, 2018 (v1)Publication
Properties of the Imode confinement regime on the ASDEX Upgrade tokamak are summarized. A weak dependence of the power threshold for the LI transition on the toroidal magnetic field strength is found. During improved confinement, the edge radial electric field well deepens. Stability calculations show that the Imode pedestal is...
Uploaded on: December 4, 2022 -
April 29, 2022 (v1)Publication
EUROfusion Consortium 633053
Uploaded on: March 25, 2023 -
January 11, 2023 (v1)Publication
Experiments on nitrogen assisted divertor detachment in the improved energy confinement mode (I-mode) are reported from the ASDEX Upgrade tokamak. When nitrogen is introduced into the divertor and radiation losses cool the divertor plasma down, a loss of core confinement is observed, concomitant with an increase in low frequency edge...
Uploaded on: March 24, 2023