10 citations · 31 across the 6 of their papers we have counts for
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Characterization of NBI-driven shear Alfvén waves in the TJ-II stellarator using Mirnov probes and electrostatic potential fluctuation measurements
P. Pons-Villalonga, Á. Cappa, E. Ascasíbar +6
We present the first experimental measurements of the toroidal mode number of shear Alfvén waves in the TJ-II stellarator. A series of experiments were carried out in three differe…
Exploring the operational limits of poloidal and helical arrays of Mirnov coils in stellarators by means of a synthetic diagnostic
P. Pons-Villalonga, A. Cappa, J. Martínez-Fernández +3
A synthetic Mirnov coils diagnostic for non-axisymmetric magnetic configurations is presented and used to study the capabilities of the poloidal array of single-axis coils and the…
Validating neutral-beam current drive simulations in the TJ-II stellarator
Sadig Mulas, Álvaro Cappa, José Martínez-Fernández +9
In this paper, we analyze the results of neutral-beam current drive (NBCD) experiments, performed in the TJ-II stellarator, with the aim of validating the theoretical predictions.…
The causal impact of magnetic fluctuations in slow and fast L-H transitions at TJ-II
B. Ph. van Milligen, T. Estrada, B. A. Carreras +6
This work focuses on the relationship between L-H (or L-I) transitions and MHD activity in the low magnetic shear TJ-II stellarator. It is shown that the presence of a low order ra…
Magnetic configuration sweep control in Heliac type stellarators
J. A. Romero, L. Pacios, A. de la Peña +2
A novel magnetic configuration sweep control system for the TJ-II Heliac device is described. The system is prepared to establish a reference for plasma, torus or vessel current wh…
Parallel and perpendicular turbulence correlation length in the TJ-II Stellarator
B. Ph. van Milligen, A. Lopez Fraguas, M. A. Pedrosa +3
Long range correlations were measured using two remote reciprocating Langmuir probe systems at TJ-II. The influence of the rotational transform on the correlation was studied by sc…
Spatiotemporal and Wavenumber Resolved Bicoherence at the Low to High Confinement Transition in the TJ-II Stellarator
B. Ph. van Milligen, T. Estrada, C. Hidalgo +2
Plasma turbulence is studied using Doppler reflectometry at the TJ-II stellarator. By scanning the tilt angle of the probing beam, different values of the perpendicular wave number…