Feedback Control of Resistive Wall Modes in Toroidal Devices
Artikel i vetenskaplig tidskrift, 2004

Feedback control of nonaxisymmetric resistive wall modes is studied analytically for cylindrical plasmas and computationally for high beta tokamaks. Internal poloidal sensors give superior performance to radial sensors, for instance in terms of the highest achievable plasma pressure. A single poloidal array of feedback coils allows robust control with respect to variations in plasma pressure, current and rotation velocity. The control analysis is applied to advanced scenarios for ITER. Configurations with multiple poloidal coils and feedback systems for nonresonant MHD instabilities in reversed field pinches are also studied. The control study was carried out using the assumption of ideal amplifiers.

Fusion Device

Resistive Wall Mode



Yueqiang Liu

Chalmers, Institutionen för elektromagnetik, Elektromagnetiska beräkningar

Anders Bondeson

Chalmers, Institutionen för elektromagnetik, Elektromagnetiska beräkningar

D. Gregoratto

Chalmers University of Technology

Carl-Magnus Fransson

Chalmers, Signaler och system, Reglerteknik och automation

Y. Gribov

Physics Unit

R. Paccagnella

Consiglio Nazionale delle Ricerche

Consorzio Rfx

Nuclear Fusion

0029-5515 (ISSN)

Vol. 44 1 77-