SMARTOR [electronic resource] : a small-aspect-ratio torus for demonstrating thermonuclear ignition
- Princeton, N.J. : Princeton University, 1977.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- Pages: 37 : digital, PDF file
- Additional Creators:
- Princeton University
United States. Department of Energy. Office of Scientific and Technical Information
- A tokamak with 2.6-m major radius and aspect ratio of 1.9 is proposed for demonstrating thermonuclear ignition in deuterium-tritium. The 6-MA plasma current is established in part by coinjection only of 40 MW of 80-keV neutral beams (inducing approximately 2 MA at low density) and in part by the flux swing of the equilibrium-field system (inducing approximately 4 M as the plasma pressure is increased)--there is no central current transformer and no poloidal-field coils inboard of the plasma. The core of the device consists simply of a 1.9-m-diameter steel-reinforced conducting trunk formed by coalescence of the inner legs of the toroidal-field coils. Alternate designs are presented, each with an aspect ratio of 1.9, with R/sub 0/ = 2.6 m and a plasma density sufficiently large to provide a comfortable safety margin for achieving ignition conditions. The first design features higher beta (anti ..beta.. = 0.10, b/a approx. 1.6) with low tensile stress at the copper trunk (1000 kg/cm/sup 2/), while the second features lower beta (anti ..beta.. = 0.06, b/a approximately 1.2) with high tensile stress (1800 kg/cm/sup 2/). Extension of this small-major-radius, small-aspect-ratio configuration to an economically practical fusion reactor is also examined.
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