An experimental study is performed to investigate the underlying physics of ELM triggering
by imposing local perturbations at the plasma edge. Deuterium is injected during type-I …

The possibility for pacing of type-I edge localized modes (ELMs) in H-mode plasmas by
intermittent gas injection was investigated in ASDEX Upgrade as a possible alternative to …

Recent experiments on the Type I ELMy H-mode regime performed at JET with improved
diagnostics have expanded the range of parameters for the study of Type I ELM energy and …

This paper discusses how the proximity to the LH threshold affects the confinement of ELMy
H-modes at high density. The largest reduction in confinement at high density is observed at …

The edge barrier collapse induced by spontaneous and pellet triggered ELMs has been
characterized by means of a new technique based on the reflectometry group delay. The …

The pellet pacing ELM control concept developed at the mid-sized tokamak ASDEX
Upgrade is considered for the larger machines JET and ITER as well. By driving up the ELM …

This paper describes experiments with highly shaped JET H-mode plasmas, which were
directed to developing regimes where Type I ELMs are replaced by other edge relaxations …

[en] Full text: Since ITER is expected to operate at powers close to the H-mode threshold
power scaling, it is important for ITER predictions to investigate the confinement and plasma …

Density profiles in the pedestal region (H-mode) are measured in HL-2A and the
characteristics of the density pedestal are described. Cold particle deposition by supersonic …

We focus on JET plasmas in which ELMs are triggered by pellets in the presence of ELMs
which occur naturally. We perform direct time domain analysis of signals from fast radial field …