6 papers · 1 filter
Enhanced performance in quasi-isodynamic max- stellarators with a turbulent particle pinch
G. G. Plunk, A. G. Goodman, P. Xanthopoulos +7
Recent stellarator reactor designs demonstrate mostly outward turbulent particle transport, which, without advanced fueling technology, inhibits the formation of density gradients…
On the convergence of bootstrap current to the Shaing-Callen limit in stellarators
Christopher G. Albert, Craig D. Beidler, Gernot Kapper +2
Bootstrap current in stellarators can be presented as a sum of a collisionless value given by the Shaing-Callen asymptotic formula and an off-set current, which non-trivially depen…
Direct optimization of neoclassical ion transport in stellarator reactors
B. F. Lee, S. A. Lazerson, H. M. Smith +2
We directly optimize stellarator neoclassical ion transport while holding neoclassical electron transport at a moderate level, creating a scenario favorable for impurity expulsion…
Quasi-isodynamic stellarators with low turbulence as fusion reactor candidates
Alan G. Goodman, Pavlos Xanthopoulos, Gabriel G. Plunk +7
The stellarator is a type of fusion energy device that - if properly designed - could provide clean, safe, and abundant energy to the grid. To generate this energy, a stellarator m…
Optimised stellarators with a positive radial electric field
Per Helander, Alan G. Goodman, Craig D. Beidler +2
We draw attention to an interesting possibility in the design and operation of stellarator fusion reactors, which has hitherto been considered unrealistic under burning-plasma cond…
Electron root optimisation for stellarator reactor designs
E. Lascas Neto, R. Jorge, C. D. Beidler +1
In this work, we propose a method of optimising stellarator devices to favour the presence of an electron root solution of the radial electric field. Such a solution can help avoid…