The pursuit of steady-state economic production of thermonuclear fusion energy has led to
research on the stabilization of the external kink and the resistive wall mode. Advances in …

This paper reviews the research on the reversed field pinch (RFP) in the last three decades.
Substantial experimental and theoretical progress and transformational changes have been …

The plasma rotation necessary for stabilization of resistive-wall modes (RWMs) is
investigated by controlling the toroidal plasma rotation with external momentum input by …

RFX-mod is a Reversed Field Pinch device that allowed performing experiments in regimes
with a plasma current up to 2 MA, thanks to its MHD active control system. Experiments have …

The DIII-D tokamak magnetic diagnostic system [EJ Strait, Rev. Sci. Instrum. 77, 023502
(2006)] has been upgraded to significantly expand the measurement of the plasma …

Externally applied, non-axisymmetric magnetic fields form the basis of several relatively
simple and direct methods to control magnetohydrodynamic (MHD) instabilities in a …

Stable operation with control on magnetohydrodynamic modes has been obtained in the
modified reversed field experiment employing a set of 192 feedback controlled saddle coils …

Continuous operation of a tokamak for fusion energy has clear engineering advantages but
requires conditions beyond those sufficient for a burning plasma. The fusion reactions and …

Active feedback control in the DIII-D tokamak has fully stabilized the current-driven ideal kink
resistive-wall mode (RWM). While complete stabilization is known to require both low …

The coupling of multiple magnetohydrodynamic (MHD) modes can lead to mode locking and
major disruption in tokamak plasmas. In the J-TEXT tokamak, the coupling between two …