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(ICP/02) Experimental Pseudo-Symmetric Trap EPSILON

A. A. Skovoroda¹⁾, V. V. Arsenin¹⁾, E. D. Dlougach¹⁾, V. M. Kulygin¹⁾, A. Yu. Kuyanov¹⁾, A. V. Timofeev¹⁾, V. A. Zhil'tsov¹⁾, A. V. Zvonkov^1)
 
1) OGRA, Nuclear Fusion Institute, RRC Kurchatov Institute, Moscow, Russia

Abstract.  Within the framework of the conceptual project ``Adaptive Plasma EXperiment'' a trap with the closed magnetic field lines ``Experimental Pseudo-Symmetric trap'' is examined. The project APEX is directed at the theoretical and experimental development of physical foundations for stationary thermonuclear reactor on the basis of an alternative magnetic trap with tokamak-level confinement of high $\beta$ plasma. The fundamental principle of magnetic field pseudosymmetry that should be satisfied for plasma to have tokamak-like confinement is discussed. The calculated in paraxial approximation examples of pseudosymmetric curvilinear elements with poloidal direction of B isolines are adduced. The EPSILON trap consisting of two straight axisymmetric mirrors linked by two curvilinear pseudosymmetric elements is considered. The plasma currents are short-circuited within the curvilinear element what increases the equilibrium $\beta$. The untraditional scheme of MHD stabilization of a trap with the closed field lines by the use of divertor inserted into axisymmetric mirror is analyzed. The experimental installation EPSILON-OME that is under construction for experimental check of divertor stabilization is discussed. The possibility of ECR plasma production in EPSILON-OME under conditions of high density and small magnetic field is examined.

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