Formation of ITB in the vicinity of rational surfaces in the Uragan-3M torsatron

Formation of ITB in the vicinity of rational surfaces in the Uragan-3M torsatron

It was shown that there is the possibility of ITB formation in the vicinity of rational surfaces in a torsatron magnetic configuration. The formation of ITB is accompanied by fast change of plasma poloidal rotation velocity, radial electric field and its shear and the decrease of plasma density fluc...

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Date:2003
Main Authors: Volkov, E.D., Berezhnyj, V.L., Bondarenko, V.N., Chechkin, V.V., Fomin, I.P., Grigor’eva, L.I., Konovalov, V.G., Kotsubanov, V.D., Kulaga, A.E., Lapshin, V.I., Lesnyakov, G.G., Litvinov, A.P., Lozin, A.V., Mironov, Yu.K., Moiseenko, V.E., Nazarov, N.I., Nikol’skij, I.K., Ocheretenko, V.L., Pavlichenko, O.S., Pinos, I.B., Podoba, Yu.Ya., Romanov, V.S., Shapoval, A.N., Shcherbinina, T.E., Skibenko, A.I., Slavnyi, A.S., Sorokovoy, E.L., Tarasov, I.K., Tsybenko, S.A., Voitsenya, V.S.
Format: Article
Language:English
Published: Національний науковий центр «Харківський фізико-технічний інститут» НАН України 2003
Series:Вопросы атомной науки и техники
Subjects:
Magnetic confinement
Online Access:http://dspace.nbuv.gov.ua/handle/123456789/110143
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Journal Title:Digital Library of Periodicals of National Academy of Sciences of Ukraine
Cite this:Formation of ITB in the vicinity of rational surfaces in the Uragan-3M torsatron / E.D. Volkov, V.L. Berezhnyj, V.N. Bondarenko, V.V. Chechkin, I.P. Fomin, L.I. Grigor’eva, V.G. Konovalov, V.D. Kotsubanov, A.E. Kulaga, V.I. Lapshin, G.G. Lesnyakov, A.P. Litvinov, A.V. Lozin, Yu.K. Mironov, V.E. Moiseenko, N.I. Nazarov, I.K. Nikol’skij, V.L. Ocheretenko, O.S. Pavlichenko, I.B. Pinos, Yu.Ya. Podoba, V.S. Romanov, A.N. Shapoval, T.E. Shcherbinina*, A.I. Skibenko, A.S. Slavnyi, E.L. Sorokovoy, I.K. Tarasov, S.A. Tsybenko, V.S. Voitsenya // Вопросы атомной науки и техники. — 2003. — № 1. — С. 3-6. — Бібліогр.: 6 назв. — англ.

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Digital Library of Periodicals of National Academy of Sciences of Ukraine
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Summary:It was shown that there is the possibility of ITB formation in the vicinity of rational surfaces in a torsatron magnetic configuration. The formation of ITB is accompanied by fast change of plasma poloidal rotation velocity, radial electric field and its shear and the decrease of plasma density fluctuations. After the ITB formation the transition to the improved plasma confinement takes place. The transition stars when electron temperature in the region of rational surfaces is sufficient to satisfy the condition υTe/uei>>2πR0 (here υTe is electron thermal velocity and uei is the frequency of ion – electron collisions, and R0 is the major radius of the torus). Such a regime can be maintained during the whole duration of RF discharge without any disturbances.

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