5.3.8. Generic parabola source (x-y plane)

The source of the generic parabola distribution in the x-y plane can be set. The parameters for the generic parabola source are shown below. The order of parameters is free. Parameters with (D=***) are optional.

Table 5.3.73 x0

value	explanation
(D=0.0)	x coordinate of the X-parabola center [cm].

Table 5.3.74 y0

value	explanation
(D=0.0)	y coordinate of the Y-parabola center [cm].

Table 5.3.75 r1

value	explanation
(D=0.0)	Width of the parabola in the x-y plane [cm].

Table 5.3.76 z0

value	explanation
(D=0.0)	Minimum z of the parabola [cm].

Table 5.3.77 z1

value	explanation
(D=0.0)	Maximum z of the parabola [cm].

Table 5.3.78 rn

value	explanation
(D=2)	Order of the generic parabola.

Table 5.3.79 dir

value	explanation
(D=1.0)	Direction cosine of the projectile relative to the z-axis.
all	Isotropic source.
data	An a-type subsection is required.

Table 5.3.80 phi

value	explanation
(D=all)	Azimuthal angle [degree].
all	Randomly selected in the range from 0 to 360 degrees.

Table 5.3.81 dom

value	explanation
(D=0.0)	Solid angle spread [degree].
-1	\(\cos^2\) bias distribution.

Table 5.3.82 e0

value	explanation
	For mono-energy source, specify the projectile energy [MeV/n]. For an energy spectrum, use e-type = instead.

Table 5.3.83 e-type

value	explanation
mono-energy source	Give the source energy [MeV/n] directly by e0.
energy spectrum	Specify the source energy distribution by e-type.