Formation of transport barriers in lower hybrid experiment at FT-2

Sergei Lashkul (Corresponding Author), Vladimir Budnikov, Valerii Dyachenko, Lev Esipov, Evgenii Its , Mihail Kantor, Denis Kouprienko, Alexei Popov, Pavel Goncharov, Evgenii Gourevich, Sergei Shatalin, Vladimir Yermolaev, Elena Vekshina, Taina Kurki-Suonio, Jukka Heikkinen

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Abstract

The possibility to control the transport processes in an LH-heated tokamak plasma has been demonstrated. The paper presents experimentally observed transport barrier formation, initialised by the LH heating. The effects of the improved confinement are observed by the Thomson scattering diagnostics, the CX analyser, diamagnetic, spectroscopic, bolometer, reflectometer movable multielectrode Langmuir and MHD probes measurements. Mechanisms for internal (ITB) and external transport barrier (ETB) formation have been put forward to explain the observed regime of improved core confinement. The increased shear of the radial electric field stimulates the improved core confinement (ICC) regime and a transition to the H-mode.
Original languageEnglish
Pages (from-to)229-233
JournalJournal of Plasma and Fusion Research
Volume4
Publication statusPublished - 2001
MoE publication typeA1 Journal article-refereed

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    Lashkul, S., Budnikov, V., Dyachenko, V., Esipov, L., Its , E., Kantor, M., Kouprienko, D., Popov, A., Goncharov, P., Gourevich, E., Shatalin, S., Yermolaev, V., Vekshina, E., Kurki-Suonio, T., & Heikkinen, J. (2001). Formation of transport barriers in lower hybrid experiment at FT-2. Journal of Plasma and Fusion Research, 4, 229-233. http://www.jspf.or.jp/JPFRS/PDF/Vol4/jpfrs2001_04-229.pdf