NCSX Coordinate System

The purpose of this convention is to define coordinate axes; directions of positive toroidal (plasma) current, poloidal (TF) current, radial field, vertical field; major axis.

The figure below illustrates the right-handed coordinate system used on NCSX.

•   A positive toroidal (plasma or PF coil) current or a positive toroidal field point in the f-direction (counter-clockwise viewed from above).

•   A positive vertical field points in the Z-direction (upward).

•   A positive poloidal current (TF or modular coil current in the inner leg) flows in the Z-direction and provides a positive toroidal field.

•   Positive radial fields and currents are in the R-direction, radially outward from the Z-axis, the major axis of the stellarator.

Please forward comments and questions to reiersen@pppl.gov

(last updated on 01/21/2004 04:56 PM )