The programme to design plasma scenarios for the Spherical Tokamak for Energy
Production (STEP), a reactor concept aiming at net electricity production, seeks to exploit the …

Tokamak operational regimes with small edge localized modes (ELMs) could be a solution
to the problem of large transient heat loads in fusion reactors. A ballooning mode near the …

The quasi-continuous exhaust (QCE) regime, formerly known as either type-II ELM or small
ELM regime is studied in ASDEX Upgrade. The regime is a natural type-I ELM-free H-mode …

One of our grand challenges towards fusion energy is the achievement of a high-
performance plasma core coupled to a boundary solution. The high confinement mode (H …

The ELM triggering mechanism in tokamaks is not yet fully understood. For example, in the
JET tokamak with ITER-like wall (commonly called JET-ILW), the ELMs are sometimes …

Predictions of heat load widths λ_q based on particle orbits alone are very pessimistic. This
paper shows that pedestal peeling-ballooning (PB) MHD turbulence broadens the stable …

Regimes of operation in tokamaks that are devoid of large edge localised modes have to be
better understood to extrapolate their applicability to reactor-relevant devices. This paper …

The transition from small edge-localized modes (ELMs) to large ELMs has been repetitively
observed in minute-scale long-pulse high-confinement mode (H-mode) discharges during …

Large edge localised modes (ELMs) would cause an unacceptable reduction of material
lifetime in future large tokamaks due to the significant amount of energy expelled from the …

In this work, we investigate the behavior of instabilities appearing between type-I edge
localized modes (ELMs), with increasing neutral beam injection (NBI) power concomitant …