B. Alper

TL;DR: Type-I edge-localized modes have been mitigated at the JET tokamak using a static external n=1 perturbation field generated by four error field correction coils located far from the plasma.

TL;DR: It is shown in the Joint European Torus that NTMs can be readily destabilized by long-period sawteeth, such as obtained by sawtooth stabilization from ion-cyclotron heating or current drive, which has important implications for burning plasma scenarios, as alpha particles strongly stabilize the saweeth.

TL;DR: In this article, a survey of the causes of all 2309 JET disruptions over the last decade of JET operations was carried out to obtain a complete picture of all possible disruption causes, in order to devise better strategies to prevent or mitigate their impact.

TL;DR: In this paper, a new class of modes, the Alfven cascades, excited by energetic ions, were observed in the JET tokamak, and measurements of these Alfven instabilities were used to solve the inverse problem of identifying the plasma parameters using the dependence of the AAF spectrum on equilibrium parameters.

TL;DR: In this article, the relative Type I ELM plasma energy loss (to the pedestal energy) is found to correlate well with the collisionality of the pedestals, showing a weak dependence on the method used to achieve those pedestal plasma parameters: plasma shaping, heating, pellet injection and impurity seeding.