Nuclear Fusion Physics and Technology/Tokamak Device

Note: Basic assumptions
Lets assume electromagnetic field described by electric and magnetic vector fields $$\vec{E}(\vec{r}), \vec{B}(\vec{r})$$ and plasma described by probability density $$f(\vec{r})$$. Also lets assume that basic terms are self-explaining.

Definition: Magnetic vessel
Magnetic vessel is electromagnetic field device aimed for plasma keeping.

Definition: Linear configuration
Linear configuration of magnetic vessel is electromagnetic field with parallel field lines and open ends.

Definition: Toroidal configuration
Toroidal configuration of magnetic vessel is toroidal electromagnetic field with closed ends.

Definition: Number 8 configuration
Number 8 configuration of magnetic vessel is crossed electromagnetic field with closed ends and field lines in number 8 shape.

Definition: Stelarator
Stelarator is axial asymmetric magnetic vessel with toroidal configuration.

Definition: Poloidal magnetic field
Poloidal magnetic field of toroidal magnetic vessel is magnetic field component with field lines closed perpendicular around coordinate $$\varphi$$.

Definition: Toroidal magnetic field
Toroidal magnetic field of toroidal magnetic vessel is magnetic field component with field lines closed perpendicular around coordinate $$h$$.

Definition: Major radius
Major radius $$R_0$$ is distance between main axis to magnetic axis.

Definition: Minor radius
Minor radius $$r_0$$ is distance between magnetic axis and plasma edge. (plasma edge definition needed, maybe 1/e drop of f(r)?)

Definition: Aspect ratio
Aspect ratio $$a$$ is ratio of major radius and minor radius $$a = \frac{R_0}{r_0} $$