5.3.6. Generic parabola source (x, y, z independent)

The generic parabola distribution consists of independent parabolas in the x, y, and z directions. The parameters for the generic parabola source are shown below. The order of parameters is free. Parameters with (D=***) are optional.

Table 5.3.51 x0

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

Table 5.3.52 x1

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

Table 5.3.53 y0

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

Table 5.3.54 y1

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

Table 5.3.55 z0

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

Table 5.3.56 z1

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

Table 5.3.57 rn

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

Table 5.3.58 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 5.3.59 phi

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

Table 5.3.60 dom

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

Table 5.3.61 e0

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

Table 5.3.62 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.