Confinement of non-neutral plasmas in the Columbia Non-neutral Torus Experiment

Pedersen, T. S.

doi:10.1063/1.1635190

Cited by 1 publication

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“…Magnetic surface configurations have long been used to confine fusion plasma but have only recently become of interest as confinement devices for non-neutral plasmas [1], [2]. The physics of non-neutral plasmas on magnetic surfaces has been shown to be fundamentally different from previous configurations [3], [4], including the Penning trap. The goal of the Columbia Non-neutral Torus (CNT) is to study the equilibrium, stability, and transport of non-neutral plasmas which are confined on magnetic surfaces.…”

Section: Introductionmentioning

confidence: 99%

The Status of the Design and Construction of the Columbia Non-neutral Torus

Kremer¹,

Pedersen

Pomphrey³

et al. 2003

AIP Conference Proceedings

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The Columbia Non-neutral Torus (CNT) is a tabletop (R=0.3 m, a=0.1 m, B=0.2 T) stellarator now being constructed at Columbia University. The goal of CNT is to study the equilibrium, stability, and transport of non-neutral plasmas confined on magnetic surfaces. CNT will use four circular, planar coils: two interlocking coils with a variable tilt angle, plus two additional poloidal field coils. By varying the angle between the interlocking coils, the rotational transform can be varied from 0.2 to 0.6 and the magnetic shear from essentially zero to 20%. The results of a numerical study of how error fields affect the quality of the magnetic surfaces will be presented. The plasma will be diagnosed by numerous Langmuir and sector probes, connected to a computer data acquisition and control system.

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