Suppression of the resistive wall mode (RWM) has been successfully demonstrated in the DIII-D tokamak by using rotational stabilization in conjunction with a close-fitting vacuum vessel wall. The duration of the high-pressure discharge was extended to hundreds of times the wall skin time. Frequently, the plasma pressure reached the ideal-wall magnetohydrodynamic (MHD) kink limit. The confined pressure is up to twice as high as the no-wall ideal MHD kink limit. Near its marginal stability point, the RWM is found to resonate with residual non-axisymmetric fields (e.g. components of the error field). A magnetic feedback system has been used to identify and compensate for the residual non-axisymmetric fields. This is to the best of our knowledge, the first demonstration of the sustainment of a stable plasma with pressure at levels well above the no-wall pressure limit. This technique is expected to be applicable to other toroidal devices.
|頁（從 - 到）||B339-B355|
|期刊||Plasma Physics and Controlled Fusion|
|發行號||12 B SPEC|
|出版狀態||Published - 2002 十二月|
|事件||29th European Physical Society Conference on Plasma Physics and Controlled Fusion - Montreux, Switzerland|
持續時間: 2002 六月 17 → 2002 六月 21
All Science Journal Classification (ASJC) codes