7.20. [ T-Gshow ] section

This tally produces graphical geometry output for regions bounded by xyz mesh. These outputs can be obtained without transport calculation using the option icntl=7 in the [parameters] section.

The option of output=10, gshow=5 for other tallies, is useful for lattice and tetrahedral geometry with very fine mesh.

Table 7.20.1 mesh

value

explanation

xyz

Mesh type. Only xyz mesh can be set. A mesh type subsection is required below this option.
Table 7.20.2 axis

value

explanation

xy, yz, xz

2-dimensional.
Table 7.20.3 file

value

explanation

file name

Define output file names. This is required by each setting of axis.
Table 7.20.4 output

value

explanation

1

Region boundary.

2

Region boundary + material color.

3

Region boundary + material name.

4

Region boundary + material color + material name.

5

Region boundary + region name.

6

Region boundary + material color + region name.

7

Region boundary + LAT number.

8

Region boundary + material color + LAT number.

9

No output.

10

Material color in pixel style.
Table 7.20.5 resol

value

explanation

1 (default)

This option multiplies the region line resolution by a factor of resol.
Table 7.20.6 width

value

explanation

0.5 (default)

The option defines the line thickness.
Table 7.20.7 title

value

explanation

(optional)

Title.
Table 7.20.8 angel

value

explanation

(optional)

ANGEL parameters.
Table 7.20.9 sangel

value

explanation

(optional)

Special format for ANGEL parameters.
Table 7.20.10 x-txt

value

explanation

(optional)

\(x\) axis title.
Table 7.20.11 y-txt

value

explanation

(optional)

\(y\) axis title.
Table 7.20.12 epsout

value

explanation

0 (default), 1, 2

When epsout=1, results are plotted into eps files. The eps file is named by replacing the extension with .eps. When epsout=2, error bars are also displayed in the eps file, except for the 2-dimensional type, axis=xy, yz, xz, rz.
Table 7.20.13 bmpout

value

explanation

0 (default), 1

Generate Bitmap figure of 2-dimensional tally output. This file is named by replacing the extension with .bmp. When mesh=xyz and axis=xy, yz, xz, it is available.
Table 7.20.14 vtkout

value

explanation

0 (default), 1

Output the tally results in the xyz mesh in the input format of ParaView. This file is named by replacing the extension with .vtk. This option is available when mesh=xyz and axis=xy, yz, xz.

In addition to the tally values, the VTK file contains the region number (region) and material number (material) assigned to each mesh cell. When gshow=0 (default), these numbers are determined from the geometry at the center coordinates of each mesh cell. Each mesh cell is evaluated independently, and this evaluation does not depend on the value of resol. This improves the accuracy near region and material boundaries and the robustness of VTK output for complex CSG and tetrahedral-mesh geometries.

Note that this method judges whether the center of each cell lies inside a component, and thus components that are small compared with the mesh cells may be overlooked. To reduce such omissions, increase the number of meshes instead of resol.

When gshow is set to 1 or greater, boundary geometry is also written in VTK format together with the region and material numbers. In this case, resol is used for the resolution of the boundary lines.
Table 7.20.15 vtkfmt

value

explanation

0 (default), 1

Format of output file for ParaView. 0: ascii, 1: binary.
Table 7.20.16 trcl

value

explanation

(optional)

Coordinate transformation number or definition for r-z or xyz mesh.
Table 7.20.17 gslat

value

explanation

2 (default)

Option to draw lattice or tetrahedral geometry boundary lines when gshow or rshow is specified.

0

Not drawing.

1

Drawing. Note that the line of voxel phantoms may not be drawn clearly.

2

Not drawing the lines in the same cell.

3

Not drawing the lines in the same material. In this case, the boundary of two adjacent cells filled with the same material is not also drawn, even if not lattice or tetrahedral geometry. When gshow>=3, cell and lattice numbers are now shown.

output=7 and 8 can be used only when the cells in bottom level are themselves in the lattice; the output then gives lattice numbers in the format (4,1,2). For example, Fig. 5.6.11 in Section 5.6.4 is generated by the input shown below.

Listing 7.20.1 [t-gshow] example
     1:   [ T - gshow ]
     2:        mesh = xyz
     3:      x-type = 2
     4:          nx = 100
     5:        xmin = -10.
     6:        xmax =  10
     7:      y-type = 1
     8:          ny = 1
     9:              -5.0 5.0
    10:      z-type = 2
    11:       nz    = 100
    12:       zmin  = -10.
    13:       zmax  =  10.
    14:        axis = xz
    15:      output = 8
    16:        file = cell-example6.dat
    17:      epsout = 1