Polarimetric laser beam diffraction in a tokamak plasma
Sign Up to like & getrecommendations! Published in 2019 at "Fusion Engineering and Design"
DOI: 10.1016/j.fusengdes.2019.01.145
Abstract: Abstract In this paper the method of complex geometrical optics (CGO) is applied to the analysis of polarimetric laser beam propagation and diffraction in tokamak plasma. The paraxial CGO reduces the problem of beam diffraction… read more here.
Keywords: tokamak plasma; diffraction tokamak; laser beam; beam ... See more keywords
An overview of the numerical methods for tokamak plasma equilibrium computation implemented in the NICE code
Sign Up to like & getrecommendations! Published in 2020 at "Fusion Engineering and Design"
DOI: 10.1016/j.fusengdes.2020.112020
Abstract: Abstract The code NICE (Newton direct and Inverse Computation for Equilibrium) enables to solve numerically several problems of plasma free-boundary equilibrium computations in a tokamak: plasma free-boundary only reconstruction and magnetic measurements interpolation, full free-boundary… read more here.
Keywords: tokamak plasma; overview numerical; equilibrium computation; free boundary ... See more keywords
Adhesion force of W dust on tokamak W plasma-facing surfaces: The importance of the impact velocity
Sign Up to like & getrecommendations! Published in 2019 at "Nuclear Materials and Energy"
DOI: 10.1016/j.nme.2019.02.001
Abstract: Abstract The adhesion of tungsten (W) dust particles on W tokamak plasma-facing surfaces is investigated. When spherical dust hits the tokamak walls, its shape is altered as a contact area is created by the adhesion… read more here.
Keywords: tokamak plasma; velocity; adhesion; force ... See more keywords
Stability of a tokamak plasma with diffuse toroidal rotation
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Plasma Physics"
DOI: 10.1017/s0022377820001178
Abstract: The present work considers the stability of a high-$\beta$, large aspect ratio, circular plasma with diffuse profiles for the safety factor and the angular toroidal frequency (López & Guazzotto, Phys. Plasmas, vol. 24, 032501). An… read more here.
Keywords: tokamak plasma; diffuse toroidal; stability tokamak; plasma ... See more keywords
Mimicking Electromagnetic Wave Coupling in Tokamak Plasma with Fishnet Metamaterials
Sign Up to like & getrecommendations! Published in 2018 at "Scientific Reports"
DOI: 10.1038/s41598-018-24250-0
Abstract: This paper reports a fishnet hyperbolic metamaterial that mimics the electromagnetic properties of magnetically confined plasma. These electromagnetic properties are strongly anisotropic and different from any conventional material, therefore cannot be mimicked by bulk materials.… read more here.
Keywords: tokamak plasma; plasma fishnet; mimicking electromagnetic; electromagnetic wave ... See more keywords
The effect of triangularity on fluctuations in a tokamak plasma
Sign Up to like & getrecommendations! Published in 2018 at "Nuclear Fusion"
DOI: 10.1088/1741-4326/aa98f4
Abstract: The effects of plasma shaping, in particular triangularity (δ), on temperature fluctuations in the tokamak a configuration variable have been studied using the correlation electron cyclotron emission system. It has been found that, in ohmic… read more here.
Keywords: tokamak plasma; fluctuations tokamak; triangularity fluctuations; triangularity ... See more keywords
Classification of tokamak plasma confinement states with convolutional recurrent neural networks
Sign Up to like & getrecommendations! Published in 2020 at "Nuclear Fusion"
DOI: 10.1088/1741-4326/ab6c7a
Abstract: During a tokamak discharge, the plasma can vary between different confinement regimes: Low (L), High (H) and, in some cases, a temporary (intermediate state), called Dithering (D). In addition, while the plasma is in H… read more here.
Keywords: tokamak; plasma confinement; classification tokamak; confinement ... See more keywords
The Role of an Electric Field in the Formation of a Detached Regime in Tokamak Plasma
Sign Up to like & getrecommendations! Published in 2018 at "Technical Physics Letters"
DOI: 10.1134/s1063785018030252
Abstract: Modeling of the transition to the detachment of ASDEX Upgrade tokamak plasma with increasing density is performed using the SOLPS-ITER numerical code with a self-consistent account of drifts and currents. Their role in plasma redistribution… read more here.
Keywords: plasma; field; tokamak plasma; role electric ... See more keywords
Estimation of Tokamak Plasma Position and Shape in TOKASTAR-2 Using Magnetic Field Measurement
Sign Up to like & getrecommendations! Published in 2018 at "Plasma and Fusion Research"
DOI: 10.1585/pfr.13.3402072
Abstract: The tokamak plasma position and shape were estimated for the first time in TOKASTAR-2 based on external magnetic measurement using filament current approximation method. Data of a magnetic probe array and flux loops was used.… read more here.
Keywords: field; position; tokamak plasma; position shape ... See more keywords