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Study of turbulence spectra in a spherical tokamak plasma

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Published under licence by IOP Publishing Ltd
, , Citation E A Zhivulin et al 2019 J. Phys.: Conf. Ser. 1400 077036 DOI 10.1088/1742-6596/1400/7/077036

1742-6596/1400/7/077036

Abstract

A turbulence study was carried out on the Globus-M tokamak. The main method of turbulence studying was Doppler backscattering. Studies have been performed at different radii (in areas with different plasma parameters). It was found that during the transition from H-mode with edge localized modes (ELMs) to the improved confinement mode without ELMs, both turbulent fluctuations of the plasma density and velocity fluctuations are suppressed, which apparently leads to a decrease in anomalous transport.

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10.1088/1742-6596/1400/7/077036