5.3.7. Gaussian source (x-y plane)

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

Table 5.3.63 x0

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

Table 5.3.64 y0

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

Table 5.3.65 r1

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

Table 5.3.66 z0

value	explanation
(D=0.0)	Minimum z coordinate [cm].

Table 5.3.67 z1

value	explanation
(D=z0)	Maximum z coordinate [cm].

Table 5.3.68 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 5.3.69 phi

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

Table 5.3.70 dom

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

Table 5.3.71 e0

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

Table 5.3.72 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.