The experimental and theoretical activity performed in the RFX device has allowed a deeper insight into the MHD properties of the reversed field pinch (RFP) configuration. A set of successful experiments has demonstrated the possibility of influencing both the amplitude and the spectrum of the magnetic fluctuations which characterize the RFP configuration. A new regime (quasi-single-helicity states) where the dynamo mechanism works in a nearly laminar way and a helical core plasma is produced has been investigated. With these studies a reduction of magnetic chaos has been obtained. The continuous rotation of wall locked resistive tearing modes has been obtained by an m = 0 rotating perturbation. This perturbation induces rotation of m = 1 non-linearly coupled modes.
New Insights into MHD Dynamics of Magnetically Confined Plasmas from Experiments in RFX
MARTIN, PIERO;BAGATIN, MARIO;BETTINI, PAOLO;T. BOLZONELLA;BUFFA, ANTONIO;CHITARIN, GIUSEPPE;DESIDERI, DANIELE;FIORENTIN, PIETRO;GIUDICOTTI, LEONARDO;GNESOTTO, FRANCESCO;MALESANI, GAETANO;MASCHIO, ALVISE;MORESCO, MAURIZIO;PONNO, ANTONIO;PRETI, GIOVANNI;ROSTAGNI, GIORGIO;SONATO, PIERGIORGIO;ZILLI, ENRICO;ZOLLINO, GIUSEPPE
2002
Abstract
The experimental and theoretical activity performed in the RFX device has allowed a deeper insight into the MHD properties of the reversed field pinch (RFP) configuration. A set of successful experiments has demonstrated the possibility of influencing both the amplitude and the spectrum of the magnetic fluctuations which characterize the RFP configuration. A new regime (quasi-single-helicity states) where the dynamo mechanism works in a nearly laminar way and a helical core plasma is produced has been investigated. With these studies a reduction of magnetic chaos has been obtained. The continuous rotation of wall locked resistive tearing modes has been obtained by an m = 0 rotating perturbation. This perturbation induces rotation of m = 1 non-linearly coupled modes.
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