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Experiments were carried out on TEXTOR to study the scaling of energy confinement with the aspect ratio A = R/a. The ratio was varied from 3.6 to 7.2. The variation of R and a was obtained by pushing the plasma towards the outer equatorial poloidal limiter by carefully adjusting the vertical magnetic field. The results of the analysis are in agreement with the scaling laws obtained on TFTR in similar experiments. A strong dependence of the energy confinement time on plasma major radius and on plasma current is observed as well as a favourable scaling of the fusion performance parameter with the product of plasma current and aspect ratio.

Additional information

Authors: DUMORTIER P ET AL., Ecole Royale Militaire, Bruxelles (BE);BOEDO J A, University of California at Los Angeles (US);FINKEN K H ET AL., Forschungszentrum Jülich GmbH (KFA) (DE)
Bibliographic Reference: Article: 21st EPS Conference on Controlled Fusion and Plasma Physics, Montpellier, 27 June - 1 July, 1994, Vol. 18B (1994) Part I, pp. 74-77
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