Review of Heliotron E experiment
Abstract
The effects of the magnetic configuration on edge plasma parameters, plasma wall interaction, transport improvement, MHD activities, and fast ion confinement are studied by varying the vertical field and the toroidal field. The role of the vertical field is a change in the magnetic well/hill formation and the helical ripple localization by the axis shift vertical Delta. With toroidal field, the shape and size of the plasma cross section, the rotational transform and, as a consequence, shear are changed. The conclusions are summarized as follows: (1) results of edge diagnostics qualitatively agree with the change in the magnetic limiter configuration by the toroidal field; (2) the transport improvement is found in the inward shift case with a small toroidal field; (3) the stabilization effect of the toroidal field on the m=2/n=1 and m=1/n=1 modes is found; and (4) observed inward shifted CX flux distribution agrees well with the trapped particle orbit theory.
- Publication:
-
Plasma Physics and Controlled Nuclear Fusion: Next Generation Experiments in Helical Systems
- Pub Date:
- March 1990
- Bibcode:
- 1990ppcn.conf...89O
- Keywords:
-
- Heliotrons;
- Magnetohydrodynamic Stability;
- Particle Theory;
- Plasma Control;
- Plasma Diagnostics;
- Toroidal Plasmas;
- Plasmas (Physics);
- Ripples;
- Stabilization;
- Trapped Particles;
- Plasma Physics