Struphy equilibrium

AdhocTorusQPsi

Ad hoc tokamak MHD equilibrium with circular concentric flux surfaces. For a cylindrical coordinate system mathematical formulation with transformation formulae mathematical formulation the magnetic field is given by mathematical formulatio…

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Coordinate slices

Pressure and density sampled from the generated equilibrium data. Heatmaps use the perceptually uniform Viridis palette.

XY plane at 0

Pressurex–y · 5.49e-2 to 5.49e-2

Densityx–y · 2.00e-1 to 2.00e-1

XZ plane at 0

Pressurex–z · 5.49e-2 to 5.49e-2

Densityx–z · 2.00e-1 to 2.00e-1

YZ plane at 0

Pressurey–z · 5.49e-2 to 5.49e-2

Densityy–z · 2.00e-1 to 2.00e-1

Coordinate-line profiles

X-line · pressure / density

Y-line · pressure / density

Z-line · pressure / density

Parameters

Parameter	Value	Description
`a`	`0.361925`	Minor radius of torus (default: 0.361925).
`R0`	`1`	Major radius of torus (default: 1.).
`B0`	`1`	On-axis (r=0) toroidal magnetic field (default: 1.).
`q0`	`0.35`	Safety factor at r=0 (default: 0.6).
`q1`	`5`	Safety factor at r=a (default: 2.5).
`q0p`	`0.78`	Derivative of safety factor at r=0 (w.r.t. poloidal flux function, default: 0.78).
`q1p`	`5`	Derivative of safety factor at r=a (w.r.t. poloidal flux function, default: 5.00).
`n1`	`2`	1st shape factor for ion number density profile (default: 0.).
`n2`	`1`	2nd shape factor for ion number density profile (default: 0.).
`na`	`0.2`	Ion number density at r=a (default: 1.).
`beta`	`6`	On-axis (r=0) plasma beta (ratio of kinematic pressure to B^2/(2*mu0), default: 0.1).
`p1`	`0.25`	Shape factor for pressure profile, see docstring (default: 0.25).
`psi_k`	`3`	Spline degree to be used for interpolation of poloidal flux function (default=3).
`psi_nel`	`50`	Number of cells to be used for interpolation of poloidal flux function (default=50).