Semi-analytic approach for determination of poloidal beta limits using plasma internal inductance in Damavand tokamak

Noori, E; Sadeghi, Y.; Mehdian, Hassan

doi:10.1088/0031-8949/90/10/105604

Cited by 2 publications

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References 19 publications

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“…It is also possible to extract many other plasma parameter such as displacement of plasma column, prediction of vertical displacement event (VDE) and energy confinement time of tokamak using equilibrium parameters [4][5][6][7]. In tokamaks with circular cross section, it is possible to find evolution of the Shafranov parameter using model which is based on expansion (with respect to the inverse aspect ratio parameter of the tokamak) of polidal flux function w and the first order solution of the well known Grad-Shafranov equation (GSE) in toroidal coordinate system [8][9][10]. This approach (the first order solution of the poloidal flux function and finding the first order poloidal and radial components of the magnetic field), however, is an approximate method which provide reliable information about Shafranov parameter and horizontal displacement of the plasma column (Shafranov shift) in tokamaks with circular cross section or when the non-circularity of the plasma surface is considered as a correction factor.…”

Section: Introductionmentioning

confidence: 99%

Application of poloidal beta and plasma internal inductance in determination of input power time of Damavand tokamak

2016

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In this study, magnetic measurement of poloidal fields were used to determine poloidal beta and plasma internal inductance of Damavand tokamak combination of poloidal beta and plasma internal inductance (b p þ l i 2 ), known as Shafranov parameter, was obtained experimentally in terms of normal and tangential components of the magnetic field. Plasma internal inductance and poloidal beta were obtained using parametrization method based on analytical solution of Grad-Shafranov equation (GSE) and compared with parabolic-like profile of toroidal current density approach for determination of the plasma internal inductance. Finding evolution of b p þ l i 2 and plasma internal inductance. Finding poloidal beta (Shafranov parameter and internal inductance) and using energy balance equation, thermal energy and energy confinement were determined qualitatively in terms of poloidal beta during a regular discharge of Damavand tokamak.

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Section: Introductionmentioning

confidence: 99%