Arrays of magnetic coils and sensors in the EXTRAP T2R [P. R. Brunsell, Plasma Phys. Controlled Fusion 43 1457 (2001)] reversed-field pinch have been used to investigate the plasma response to an applied resonant magnetic perturbation in the range of the resistive-wall modes (RWMs). Measured RWM growth rates agree with predictions of a cylindrical ideal-plasma model. The linear growth of low- n marginally stable RWMs is related to the so-called resonant-field amplification due to a dominant ∫n∫ =2 machine error field of about 2 G. The dynamics of the m=1 RWMs interacting with the applied field produced by the coils can be accurately described by a two-pole system. Estimated poles and residues are given with sufficient accuracy by the cylindrical model with a thin continuous wall. © 2005 American Institute of Physics.
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
Gregoratto, D., Drake, J. R., Yadikin, D., Liu, Y. Q., Paccagnella, R., Brunsell, P. R., ... Cecconello, M. (2005). Studies on the response of resistive-wall modes to applied magnetic perturbations in the EXTRAP T2R reversed field pinch. Physics of Plasmas, 12(9), 1 - 11. . https://doi.org/10.1063/1.2061447