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(ICP/02) Globus-M Experiment at the Final Stage of Preparations

(This paper was rapporteured in lecture EX4/1)

V. K. Gusev, V. E. Golant, E. Z. Gusakov, V. V. Dyachenko, M. A. Irzak, V. B. Minaev, E. E. Mukhin, A. N. Novokhatskii, K. A. Podushnikova, G. T. Razdobarin, N. V. Sakharov, O. N. Shcherbinin, V. S. Uzlov

A.F. Ioffe Institute, St. Petersburg, Russia

V. A. Belyakov, A. A. Kavin, Yu.A. Kostzov, E. Kuzmin, V. F. Soikin

D.V. Efremov Institute, Metallstroy, St. Petersburg, Russia

E. A. Kuznetzov, V. A. Yagnov

TRINITI, Troitsk, Moscow region, Russia

N. Ya. Dvorkin, V. V. Mikov

State Enterprise Northern Plant, St. Petersburg, Russia

Abstract.  Globus-M spherical tokamak was designed and constructed in the framework of International Science and Technology Center. The work was performed as a joint effort of institutions listed in the title. Final technical characteristic of the machine are better than the design parameters. The nominal plasma current is increased up to 0.5 MA, the toroidal magnetic field is increased up to 0.65 T. Major radius is 0.36 m, minor radius is 0.24 m, aspect ratio is 1.5, vertical elongation is 2.2, pulse duration is 0.2 s (at 6 pulses/hour rate operation). Device performance is discussed with focus on details which could improve experimental program and make the machine operation more reliable. Experimental program steps, starting from ohmic heating regime optimization and completing RF auxiliary heating and CD methods are described. Some results of RF simulation performed in the range of frequencies 10 MHz-2.45 GHz are presented. Application of such methods for local plasma parameters profiles modification is discussed. Brief description of first stage diagnostics and of the advanced diagnostics equipment for the second stage is made. Current project status is discussed.

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IAEA 2001