5.3.13. Triangle prism source¶

The parameters for the triangle prism source are shown below. The order of parameters is free. Parameters with (D=***) are optional.

Table 5.3.134 x0¶
value	explanation
(D=0.0)	x coordinate of the origin apex of the triangle [cm].

Table 5.3.135 y0¶
value	explanation
(D=0.0)	y coordinate of the origin apex of the triangle [cm].

Table 5.3.136 z0¶
value	explanation
(D=0.0)	z coordinate of the origin apex of the triangle [cm].

Table 5.3.137 x1¶
value	explanation
(D=0.0)	x vector from the origin to the first apex [cm].

Table 5.3.138 y1¶
value	explanation
(D=0.0)	y vector from the origin to the first apex [cm].

Table 5.3.139 z1¶
value	explanation
(D=0.0)	z vector from the origin to the first apex [cm].

Table 5.3.140 x2¶
value	explanation
(D=0.0)	x vector from the origin to the second apex [cm].

Table 5.3.141 y2¶
value	explanation
(D=0.0)	y vector from the origin to the second apex [cm].

Table 5.3.142 z2¶
value	explanation
(D=0.0)	z vector from the origin to the second apex [cm].

Table 5.3.143 x3¶
value	explanation
(D=0.0)	x vector from the origin to the third apex [cm].

Table 5.3.144 y3¶
value	explanation
(D=0.0)	y vector from the origin to the third apex [cm].

Table 5.3.145 z3¶
value	explanation
(D=0.0)	z vector from the origin to the third apex [cm].

Table 5.3.146 **exa**¶
value	explanation
(D=0.0)	Attenuation coefficient. exa > 0 gives \(\exp(-ax)\), and exa = 0 gives a uniform distribution.

Table 5.3.147 **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 5.3.148 **phi**¶
value	explanation
(D=all)	Azimuthal angle [degree].
all	Randomly selected in the range from 0 to 360 degrees.

Table 5.3.150 e0¶
value	explanation
	For mono-energy source, specify the projectile energy [MeV/n]. For an energy spectrum, use e-type = instead.

Table 5.3.151 **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.