Induced nuclear reactions: processes – systems – and elements – Nuclear fusion – Magnetic confinement of plasma
Patent
1985-11-26
1988-04-05
Brown, David H.
Induced nuclear reactions: processes, systems, and elements
Nuclear fusion
Magnetic confinement of plasma
376133, G21B 100
Patent
active
047357657
ABSTRACT:
An 1=1 helical winding which spirals about a conventional planar, circular central conductor of a helical-axis stellarator adds a significant degree of flexibility by making it possible to control the rotational transform profile and shear of the magnetic fields confining the plasma in a helical-axis stellarator. The toroidal central conductor links a plurality of toroidal field coils which are separately disposed to follow a helical path around the central conductor in phase with the helical path of the 1=1 winding. This coil configuration produces bean-shaped magnetic flux surfaces which rotate around the central circular conductor in the same manner as the toroidal field generating coils. The additional 1=1 winding provides flexible control of the magnetic field generated by the central conductor to prevent the formation of low-order resonances in the rotational transform profile which can produce break-up of the equilibrium magnetic surfaces. Further, this additional winding can deepen the magnetic well which together with the flexible control provides increased stability.
REFERENCES:
patent: 3278384 (1966-10-01), Lenard et al.
patent: 3433705 (1969-03-01), Cornish
Boozer et al., "Two High-.beta. Toroidal Config.: A Stellarator and a Tokamak-Torsatron Hybrid", Plasma Physics & Controlled Nuclear Fusion Research, vol. 3, IEAE, Vienna, 1983, pp. 129-139.
Zueva et al., "Spiral Magnetic Configurations with Minimum B, Plasma Physics, vol. 8, pp. 765-774, 1966.
Yoshikawa, "Design of Helical Axis Stellarator", Nuclear Fusion, vol. 23, No. 5, pp. 667-669, 1983.
Cantrell Jack L.
Carreras Benjamin A.
Harris Jeffrey H.
Hender Timothy C.
Morris Robert N.
Breeden David E.
Brown David H.
Hamel Stephen D.
Hightower Judson R.
Klein Richard L.
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