Experiments with strong localized electron cyclotron heating (ECH) in the RTP tokamak
show that electron heat transport is governed by alternating layers of good and bad thermal …

In JET, both high density and low-q operation are limited by disruptions. The density limit
disruptions are caused initially by impurity radiation. This causes a contraction of the plasma …

In the Rijnhuizen Tokamak Project, plasmas with steady-state negative central shear (NCS)
are made with off-axis electron cyclotron heating. Shifting the power deposition by 2 mm …

In a tokamak plasma the maximum achievable density is limited. A too high density will result
in a violent end of a discharge. Two types of density limit disruption can be distinguished:(a…

The first results of the Dynamic Ergodic Divertor in TEXTOR, when operating in the m / n = 3
/ 1 mode configuration, are presented. The deeply penetrating external magnetic field …

The local measurement of the island width w, around the resonant surface, allowed a direct
test of the extended Rutherford model [PH Rutherford, PPPL Report-2277 (1985)], describing …

Disruptions and related vertical displacement events pose a major problem to the design
and operation of future tokamak reactors. The cause and dynamics of disruptions will be …

Oscillating MHD modes in JET are often observed to slow down as they grow and generally
stop rotating (lock) when the amplitude exceeds a critical value, then continue to grow to …

An experimental investigation into rotating MHD modes has been performed in the TEXTOR
tokamak. The effects on the stability of the MHD tearing modes of coupling between m/n= 2/…

ITER as a superconducting fusion machine needs efficient wall conditioning techniques for
application in the presence of the permanent high toroidal magnetic field for (i) reducing the in…