High-confinement radiative L-modes in ASDEX Upgrade
E. Fable, A. Kallenbach, R. M. McDermott, M. Bernert, C. Angioni, the ASDEX Upgrade Team
Abstract
Abstract Experiments have been performed in the ASDEX Upgrade tokamak where plasmas are kept just below the H-mode threshold using feedback on the radiated power via seeded impurity. The resulting high-power L-modes show high confinement properties and no ELM activity due to the reduced pedestal height. The physics of these high-confinement L-modes is explored by means of integrated modeling to clarify the origin of the improved confinement.
Topics & Concepts
ASDEX UpgradePedestalTokamakRadiative transferPlasmaEffective radiated powerPhysicsMagnetic confinement fusionAtomic physicsPlasma confinementImpurityBETA (programming language)Computational physicsNuclear physicsRadiationOpticsQuantum mechanicsArchaeologyComputer scienceHistoryProgramming languageMagnetic confinement fusion researchIonosphere and magnetosphere dynamicsParticle accelerators and beam dynamics