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Abstract

EXTRAP is a concept in which a pure Z-pinch is generated along the axis of an field. Experiments in a linear as well as in a sector geometry have demonstrated that the pinch becomes stable against global instabilities for many Alfven times. The field EXTRAP is produced by four, external, current carrying rings. In the toroidal geometry these rings must be supplemented by additional rings to compensate for the plasma loop force and transformer core leakage flux. Equilibrium studies are carried out for two basically different ring designs.? The studies are based on numerical equilibrium computations using the GOYA code. Sensitivity of the equilibrium to technical imperfections is also analyzed.

Additional information

Authors: DRAKE J R, ROYAL INSTITUTE OF TECHNOLOGY, STOCKHOLM (SWEDEN);SCHEFFEL J ROYAL INSTITUTE OF TECHNOLOGY, STOCKHOLM (SWEDEN), ROYAL INSTITUTE OF TECHNOLOGY, STOCKHOLM (SWEDEN)
Bibliographic Reference: WRITE TO THE DEPARTMENT OF PLASMA PHYSICS AND FUSION RESEARCH, ROYAL INSTITUTE OF TECHNOLOGY, S-100 44 STOCKHOLM (SWEDEN) MENTIONING REPORT TRITA-PFU-85-12, 1985
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