71 citations · 990 across the 59 of their papers we have counts for
60 papers
Robust stellarator optimization via flat mirror magnetic fields
J. L. Velasco, I. Calvo, E. Sánchez +1
Stellarator magnetic configurations need to be optimized in order to meet all the required properties of a fusion reactor. In this work, it is shown that a flat-mirror quasi-isodyn…
Reduction or enhancement of stellarator turbulence by impurities
J. M. García-Regaña, I. Calvo, F. I. Parra +1
A systematic study of the impact of impurities on the turbulent heat fluxes is presented for the stellarator Wendelstein 7-X (W7-X) and, for comparison, the Large Helical Device an…
Neoclassical transport in strong gradient regions of large aspect ratio tokamaks
Silvia Trinczek, Felix I. Parra, Peter J. Catto +2
We present a new neoclassical transport model for large aspect ratio tokamaks where the gradient scale lengths are of the size of the poloidal gyroradius. Previous work on neoclass…
A quasi-isodynamic configuration with good confinement of fast ions at low plasma
E. Sánchez, J. L. Velasco, I. Calvo +1
A new quasi-isodynamic stellarator configuration optimized for the confinement of energetic ions at low plasma is obtained. The numerical optimization is carried out using the…
Prevention of core particle depletion in stellarators by turbulence
H. Thienpondt, J. M. García-Regaña, I. Calvo +11
In reactor-relevant plasmas, neoclassical transport drives an outward particle flux in the core of large stellarators and predicts strongly hollow density profiles. However, this t…
Finite orbit width effects in large aspect ratio stellarators
Vincent d'Herbemont, Felix I. Parra, Ivan Calvo +1
New orbit averaged equations for low collisionality neoclassical fluxes in large aspect ratio stellarators with mirror ratios close to unity are derived. The equations retain finit…