5.3.5. Gaussian source (x, y, z independent)

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

Table 5.3.40 x0

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

Table 5.3.41 x1

value	explanation
(D=0.0)	FWHM in the x direction [cm].

Table 5.3.42 y0

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

Table 5.3.43 y1

value	explanation
(D=0.0)	FWHM in the y direction [cm].

Table 5.3.44 z0

value	explanation
(D=0.0)	z coordinate of the Gaussian center [cm].

Table 5.3.45 z1

value	explanation
(D=0.0)	FWHM in the z direction [cm].

Table 5.3.46 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 5.3.47 phi

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

Table 5.3.48 dom

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

Table 5.3.49 e0

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

Table 5.3.50 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.