45 citations · 396 across the 25 of their papers we have counts for
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Radial electric field and density fluctuations measured by Doppler reflectometry during the post-pellet enhanced confinement phase in W7-X
T. Estrada, D. Carralero, T. Windisch +13
Radial profiles of density fluctuations and radial electric field, , have been measured using Doppler reflectometry during the post-pellet enhanced confinement phase achieved,…
Exploration of the parameter space of piecewise omnigenous stellarator magnetic fields
J. L. Velasco, E. Sánchez, I. Calvo
Piecewise omnigenous fields are stellarator magnetic fields that are optimized with respect to radial neoclassical transport thanks to a second adiabatic invariant that is piecewis…
Evaluation of neoclassical transport in nearly quasi-isodynamic stellarator magnetic fields using MONKES
Francisco Javier Escoto, José Luis Velasco, Iván Calvo +1
Stellarator magnetic fields that are perfectly optimized for neoclassical transport (with levels of radial neoclassical transport comparable to tokamaks) are called omnigenous. Qua…
First experimental observation of zonal flows in the optimized stellarator Wendelstein 7-X
D. Carralero, T. Estrada, J. M. García-Regaña +10
In this work, we present the first experimental evidence of the presence of zonal flow (ZF) structures in the optimized stellarator Wendelstein 7-X. Using an assortment of diagnost…
Piecewise omnigenous stellarators
J. L. Velasco, I. Calvo, F. J. Escoto +3
In omnigeneous magnetic fields, charged particles are perfectly confined in the absence of collisions and turbulence. For this reason, the magnetic configuration is optimized to be…
Electrostatic microturbulence in W7-X: comparison of local gyrokinetic simulations with Doppler reflectometry measurements
A. González-Jerez, J. M. García-Regaña, I. Calvo +5
The first experimental campaigns of Wendelstein 7-X (W7-X) have shown that turbulence plays a decisive role in the performance of neoclassically optimized stellarators. This stress…