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Comparison of Confinement in Different Toroidal Configurations

1982; American Physical Society; Volume: 48; Issue: 19 Linguagem: Inglês

10.1103/physrevlett.48.1359

1092-0145

D.C. Robinson, T. N. Todd,

Solar and Space Plasma Dynamics

The CLEO device has been used to compare the confinement properties of a variety of Ohmically heated toroidal configurations at the same magnetic field. These include RFP and OHTE configurations, conventional tokamaks, a novel helically assisted low-$q$ tokamak, and an $l=3$ stellarator. The plasma current and density vary over 2 orders of magnitude for the different configurations. The stellarator exhibits the best energy confinement time, ${\ensuremath{\tau}}_{E}$, but the tokamak achieves the best $\ensuremath{\beta}{\ensuremath{\tau}}_{E}$ product.