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Mostrando ítems 1-7 de 7
Artículo
Expanding the role of impurity spectroscopy for investigating the physics of high-Z dissipative divertors
(Elsevier, 2017-08)
New techniques that attempt to more fully exploit spectroscopic diagnostics in the divertor and pedestal region during highly dissipative scenarios are demonstrated using experimental results from recent low-Z seeding ...
Artículo
Experimental investigation of geodesic acoustic modes on JET using Doppler backscattering
(IOP Publishing, 2016-10)
Geodesic acoustic modes (GAMs) have been investigated in JET ohmic discharges using mainly Doppler backscattering. Characteristics and scaling properties of the GAM are studied. Time and spatial resolved measurements of ...
Artículo
Stationary Zonal Flows during the Formation of the Edge Transport Barrier in the JET Tokamak
(2016-02)
High spatial resolution Doppler backscattering measurements in JET have enabled new insights into the development of the edge Er. We observe fine-scale spatial structures in the edge Er well with a wave number krρi ≈ ...
Artículo
On the role of finite grid extent in SOLPS-ITER edge plasma simulations for JET H-mode discharges with metallic wall
(Elsevier, 2018-12)
The impact of the finite grid size in SOLPS-ITER edge plasma simulations is assessed for JET H-mode discharges with a metal wall. For a semi-horizontal divertor configuration it is shown that the separatrix density is at ...
Artículo
In situ wavelength calibration of the edge CXS spectrometers on JET
(AIP Publishing, 2016-11)
A method for obtaining an accurate wavelength calibration over the entire focal plane of the JET edge CXS spectrometers is presented that uses a combination of the fringe pattern created with a Fabry–Pérot etalon and a ...
Artículo
Global and pedestal confinement and pedestal structure in dimensionless collisionality scans of low-triangularity H-mode plasmas in JET-ILW
(IOP Publishing, 2017-01)
Abstract A dimensionless collisionality scan in low-triangularity plasmas in the Joint European Torus with the ITER-like wall (JET-ILW) has been performed. The increase of the normalized energy confinement (defined as ...
Artículo
Possible influence of near SOL plasma on the H-mode power threshold
(Elsevier, 2017)
A strong effect of divertor configuration on the threshold power for the L-H transition (P LH ) was observed in recent JET experiments in the new ITER-like Wall (ILW) [1–3] . Following a series of EDGE2D-EIRENE code ...