-
2004
This Letter provides information on the spatial and temporal structure of periodic eruptions observed in magnetically confined laboratory fusion plasmas, called edge-localized modes (ELMs), and highlights similarities with solar eruptions. Taken together, the observations presented in this Letter provide strong evidence for ELMs being associated wi…
-
2001
Neoclassical tearing modes (NTMs) may limit performance in Next Step tokamaks, degrading confinement and possibly leading to disruption. In recent years, excellent experimental and theoretical progress has been made in understanding NTMs and their control. The properties of NTMs and various stabilization schemes are described. Recent experimental r…
-
1997
Electron cyclotron (EC) waves can perform a variety of roles in ITER including start-up assist, heating to ignition, on and off-axis current drive and instability control. EC wave absorption is robust and well understood producing highly localised heating with total absorption anticipated for almost all parameters foreseen in ITER. Other advantages…
-
1989
Magnetic feedback control has been used in the DITE tokamak to substantially reduce saturated m = 2, n = 1 instabilities in both Ohmic discharges and discharges with lower-hybrid current drive (LHCD). Feedback has been used for the first time to significantly increase the disruptive density limit in a tokamak. LHCD on DITE stabilizes the sawtooth i…
Showing 21 - 24 of 24 UKAEA Paper Results