Journal ArticleDOI
Reconstruction of current profile parameters and plasma shapes in tokamaks
TLDR
In this paper, an efficient method is given to reconstruct the current profile parameters, the plasma shape, and a current profile consistent with the magnetohydrodynamic equilibrium constraint from external magnetic measurements, based on a Picard iteration approach.Abstract:
An efficient method is given to reconstruct the current profile parameters, the plasma shape, and a current profile consistent with the magnetohydrodynamic equilibrium constraint from external magnetic measurements, based on a Picard iteration approach which approximately conserves the measurements. Computational efforts are reduced by parametrizing the current profile linearly in terms of a number of physical parameters. Results of detailed comparative calculations and a sensitivity study are described. Illustrative calculations to reconstruct the current profiles and plasma shapes in ohmically and auxiliarily heated Doublet III plasmas are given which show many interesting features of the current profiles.read more
Citations
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Bayesian soft x-ray tomography and MHD mode analysis on HL-2A
Dong Li,Yi Liu,J. Svensson,Yong Liu,X.M. Song,Liming Yu,Rui Mao,B.Z. Fu,Wei Deng,B.S. Yuan,Xiaoquan Ji,Yuan Xu,Wei Chen,Yan Zhou,Qingwei Yang,Xuru Duan,Yong Liu,Hl A Team +17 more
TL;DR: In this paper, a non-stationary Gaussian process tomography (NSGPT) was applied to soft x-ray (SXR) diagnostics on HL-2A tokamak.
Journal ArticleDOI
Concept Design of Optimized Snowflake Diverted Equilibria in CFETR
TL;DR: In this paper, the selected optimized results of the snowflake diverted equilibria in CFETR were presented for the long pulse or steady-state operation of the Chinese Fusion Engineering Test Reactor (CFETR).
Journal ArticleDOI
Equilibrium reconstruction in an iron core tokamak using a deterministic magnetisation model
TL;DR: In many tokamaks ferromagnetic material, usually referred to as an iron-core, is present in order to improve the magnetic coupling between the solenoid and the plasma.
Journal ArticleDOI
Progress of HL-2A experiments and HL-2M program
TL;DR: In this paper , a convolutional neural network (CNN) was used for disruption prediction in the HL-2M mega-ampere class tokamak with its first plasma.
Journal ArticleDOI
Plasma internal inductance dynamics in a tokamak
J.A. Romero,Jet Contributors +1 more
TL;DR: In this paper, a lumped parameter model for tokamak plasma current and inductance time evolution as a function of plasma resistance, non-inductive current drive sources and boundary voltage or poloidal field coil current drive is presented.
References
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Journal ArticleDOI
Separation of β̄p and ℓi in tokamaks of non-circular cross-section
TL;DR: In this paper, integral relations for the average poloidal beta p and the plasma internal inductance li are derived from the magnetohydrodynamic (MHD) equilibrium equation for an axisymmetric torus.
Journal ArticleDOI
Computation of ideal MHD equilibria
TL;DR: In this paper, a review of two-and three-dimensional ideal MHD equilibrium codes, with particular emphasis on axisymmetric toroidal calculations, is presented. But this paper is restricted to the case of Tokyoamak geometry.
Journal ArticleDOI
An efficient technique for magnetic analysis of non-circular, high-beta tokamak equilibria
D.W. Swain,G.H. Neilson +1 more
TL;DR: In this paper, a method for determining plasma shape and global properties of high-beta non-circular tokamak equilibria (βp, β, q and li) from magnetic sensor data is described.
Journal ArticleDOI
Magnetic analysis of non-circular cross-section tokamaks
J.L. Luxon,B.B. Brown +1 more
TL;DR: In this paper, the MHD equilibrium configuration for circular and non-circular plasmas from measurements of the magnetic field and flux made outside the discharge was determined using least squares minimization techniques.
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