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Active control of MHD modes in fusion plasma (»Add to Infobox)

Research Leader: Per Brunsell
Professor James Drake


Fusion Plasma Physics

The goal of this project is to study active control of the resistive wall mode in fusion plasmas. Control of MHD instabilities using conducting walls and external magnetic fields is a way to prevent or reduce the growth of MHD instabilities in toroidal fusion devices. Many attractive fusion power scenarios require wall stabilisation to reach high fusion power density and low recirculating power.
The aim of the project is to study active control of the resistive wall mode in fusion plasmas. Control of MHD instabilities using conducting walls and external magnetic fields has been given increasing emphasis in international fusion research. It is recognized as an important route to improved performance and reliability of toroidal fusion devices. The project is of interest to the larger scientific community including the fields of space research and nonlinear dynamics. It will enhance the understanding of basic non-linear MHD phenomena, like mode-mode interaction, which is relevant to a large variety of plasmas. The EXTRAP T2R reversed-field pinch is unique in its potential for studies of operation with a resistive wall boundary condition. The project scope is to design, implement and test a system for control of resistive wall modes on EXTRAP T2R. Control of MHD instabilities using conducting walls and external magnetic fields is a way to prevent or reduce the growth of MHD instabilities in toroidal fusion devices. Many attractive fusion power scenarios require wall stabilisation to reach high fusion power density and low recirculating power. The lifetime and the beta limit of these plasmas are determined by the onset of the resistive wall mode (RWM). Resistive wall mode control is one of the special research areas that have been given priority in the European fusion programme, being recognized to have high relevance for the next generation fusion device ITER (International Thermonuclear Experimental Reactor).

Period: 2004-01-01

Keywords:
Fusion, Fusion energy, Fusion research, Magnetic confinement, Magnetohydrodynamics, Plasma dynamics, Plasma physics

SOURCE OF FUNDING (2/2) 

EURATOM

VR (The Swedish Research Council)


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