Physical Parameters of a Reactor-Stellarator with Small Ripples of the Helical Magnetic Field

• Published in: Plasma physics reports 2018-09, Vol.44 (9), p.783-790
• Main Author: Rudakov, V. A.
• Format: Article
• Language: English
• Subjects: 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; Atomic; Collision dynamics; Dependence; ELECTRIC FIELDS; Fluxes; FREQUENCY DEPENDENCE; FUEL PELLETS; MAGNETIC FIELDS; Molecular; Nuclear fuels; Optical and Plasma Physics; Parameters; Physical properties; Physics; Physics and Astronomy; Plasma; PLASMA DENSITY; Rotating plasmas; STELLARATORS; THERMONUCLEAR REACTIONS
• ISSN: 1063-780X; 1562-6938
• DOI: 10.1134/S1063780X18090118

The paper describes the calculation data on the physical parameters of a reactor-stellarator, where the nonuniformities of the helical field are smaller than the toroidal magnetic field nonuniformities: ε h < ε t . Unlike the previous studies, where the ion-component transport coefficients had the collision frequency dependence proportional to ν 1/2 , this being equivalent to the ε h > ε t case, in the present calculations, these coefficients were assumed to be in proportion to the first power of the collision frequency, D i ∝ ν for ν eff < 2ω E , and to D i ∝ ν −1 for the inverse inequality. Here, ω E is the rotation frequency of plasma in the radial electric field. As before, the plasma electrons corresponded to the mode of D e ∝ ν −1 . As initial parameters for numerical calculations, a reactor with R = 8 m, r p = 2 m, and B 0 = 5 Т was taken. A numerical code was used to solve the set of equations that describes the plasma space−time behavior in the reactor-stellarator under the conditions of equal diffusion fluxes. The start of reactor operation in the mode of thermonuclear burning was provided by heating sources with a power of several tens of megawatts. Steady-state operating conditions of a self-sustained thermonuclear reaction were attained by maintaining the plasma density through DT fuel pellet injection into the plasma.