منابع مشابه
Quasi-axially symmetric stellarators.
Confinement of a plasma for controlled thermonuclear fusion is studied numerically. Toroidal equilibria are considered, with an emphasis on the Modular Helias-like Heliac 2 (MHH2), which is a stellarator of low aspect ratio with just two field periods surrounded by 16 modular coils. The geometry is fully three-dimensional, but there is an axial symmetry of the magnetic structure that is calcula...
متن کاملNeoclassical Transport in Quasi-Axially Symmetric Stellarators
We present a numerical and analytic assessment of the transport in two quasi-axially symmetric stellarators, including one variant of the MHH2 class[l] of such devices, and a configuration we refer t o as NHH2, closely related t o MHH2. Monte Carlo simulation results are compared with expectations from established stellarator neoclassical theory, and with some empirical stellarator scalings, us...
متن کاملDissipative trapped-electron instability in quasi-helically symmetric stellarators
The linear electrostatic dissipative trapped-electron mode (DTEM) is investigated in a quasihelically symmetric (QHS) stellarator and a configuration whose symmetry is spoiled by the addition of Mirror contribution to the magnetic spectrum. The effect of the trapped electrons are accounted for using the drift kinetic equation with an energy-dependent Krook collision operator and an effective co...
متن کاملToroidally Symmetric Stellarators
Extensive three-dimensional computations have led to the discovery of stellarators with just two field periods and quite low aspect ratio that have a remarkable toroidal symmetry in their magnetic structure. Studies of equilibrium, stability and transport show that this new configuration is a plausible candidate for a fusion reactor.
متن کاملThermophoresis of Axially Symmetric Bodies
Thermophoresis of axially symmetric bodies is investigated to first order in the Knudsen-mimber, Kn. The study is made in the limit where the typical length of the immersed body is small compared to the mean free path. It is shown that in this case, in contrast to what is the case for spherical bodies, the arising thermal force on the body is not in general antiparallel to the temperature gradi...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1998
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.95.17.9732