7.13. [ T-Time ] section

This tally gives information on the number of particles undergoing energy cut-off, escape, and decay in the time mesh [nsec]. Energy spectra of these particles can also be obtained. In particular, this is the only tally that can obtain energy spectra of particles at the moment of energy cut-off.

Table 7.13.1 mesh

value	explanation
reg, r-z, xyz	Mesh type. A mesh type subsection is required below this option.

Table 7.13.2 part

value	explanation
all (default), particle name	Tally particle.

Table 7.13.3 material

value	explanation
(optional)	Specify materials for scoring.
all	all is the default, same as no definition.
number of materials	To set number of materials, define the material numbers in the next line. The number of materials can be set as a negative value, in which case the specified materials are not included for scoring.
(next line)	2 5 8 Material numbers.

Table 7.13.4 t-type

value	explanation
1, 2, 3, 4, 5 (optional)	Time mesh. See Section 6.6.1 for mesh subsection format.

Table 7.13.5 e-type

value	explanation
1, 2, 3, 4, 5	Energy mesh. See Section 6.6.1 for mesh subsection format.

Table 7.13.6 unit

value	explanation
1, 2, 3, 4	1: [1/source] 2: [1/nsec/source] 3: [1/nsec/cm^3/source] 4: [1/nsec/cm^3/MeV/source]

Table 7.13.7 axis

value	explanation
t, eng, reg, x, y, z, r	x axis value of output data.
xy, yz, xz, rz	2-dimensional.

Table 7.13.8 samepage

value	explanation
(optional, D=part)	The type of data to be displayed on the same page of the image output file. Parameters that can be defined in axis can be specified.

Table 7.13.9 file

value	explanation
file name	Define output file names. This is required by each setting of axis.

Table 7.13.10 resfile

value	explanation
(optional, D=file)	Define a file name of the past tally in the restart calculation. Even if several axis parameters were defined, specify only one resfile.

Table 7.13.11 output

value	explanation
all	Energy cut-off, escape, and decay particles.
cutoff	Energy cut-off particles.
escape	Escape particles.
decay	Decay particles.

Table 7.13.12 factor

value	explanation
(optional, D=1.0)	Normalization factor.

Table 7.13.13 title

value	explanation
(optional)	Title.

Table 7.13.14 angel

value	explanation
(optional)	ANGEL parameters.

Table 7.13.15 sangel

value	explanation
(optional)	Special format for ANGEL parameters.

Table 7.13.16 2d-type

value	explanation
1, 2, 3, 4, 5, 6, 7	Options for 2-dimensional plot.
(optional, D=3)

Table 7.13.17 x-txt

value	explanation
(optional)	\(x\) axis title.

Table 7.13.18 y-txt

value	explanation
(optional)	\(y\) axis title.

Table 7.13.19 z-txt

value	explanation
(optional)	\(z\) axis title.

Table 7.13.20 gshow

value	explanation
0 (default), 1, 2, 3, 4, 5	When mesh=xyz and axis=xy,yz,xz, region border (1), material name (2), region name (3), and LAT number (4) are plotted using this option. gshow=5 outputs only material colors in pixel style when icntl=8.

Table 7.13.21 rshow

value	explanation
0 (default), 1, 2, 3	When mesh=xyz and axis=xy,yz,xz, region border (1), material name (2), and region name (3) are plotted using this option. A xyz mesh section must be added below this option.

Table 7.13.22 resol

value	explanation
1 (default)	This option multiplies the region line resolution by a factor of resol with the gshow or rshow option set to define the line thickness.

Table 7.13.23 width

value	explanation
0.5 (default)	The option defines the line thickness.

Table 7.13.24 volume

value	explanation
(optional)	This option defines the volume for each region for reg mesh. Volume definitions are required below this option. Values defined in [volume] are used in the case of no definition. If special description such as using (  ) is used to specify a region in reg=, its internally defined region number is output in input echo when this volume subsection is not defined.
reg vol	Volume definition. For details see the [volume] section.

Table 7.13.25 iechrl

value	explanation
72 (default)	Maximum number of columns for volume input echo.

Table 7.13.26 volmat

value	explanation
(optional, D=9)	This option corrects the volume value for each mesh when material is defined by the xyz mesh. 0 means no correction. Value of volmat is the number of scans per one xyz mesh side.

Table 7.13.27 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 7.13.28 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 7.13.29 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. When mesh=xyz and axis=xy, yz, xz, it is available.

Table 7.13.30 vtkfmt

value	explanation
0 (default), 1	Format of output file for ParaView. 0: ascii, 1: binary.

Table 7.13.31 maxangel

value	explanation
Number of part (default)	Specify the number of part shown in the eps file. This parameter limits the number of particles shown in a tally eps file, while it does not limit them in a numerical data file.

Table 7.13.32 ctmin(i)

value	explanation
(optional, D=-9999)	Minimum value for the i-th counter.

Table 7.13.33 ctmax(i)

value	explanation
(optional, D=9999)	Maximum value for the i-th counter.

Table 7.13.34 chmin(i)

value	explanation
(optional, D=-9999)	Minimum value for the i-th history-counter. This parameter cannot be specified in the batch variance mode, istdev=1.

Table 7.13.35 chmax(i)

value	explanation
(optional, D=9999)	Maximum value for the i-th history-counter. This parameter cannot be specified in the batch variance mode, istdev=1.

Table 7.13.36 trcl

value	explanation
(optional)	Coordinate transformation number or definition for r-z or xyz mesh.

Table 7.13.37 dump

value	explanation
Number of data	For mesh=reg, the information is dumped on the file. If dump is negative, data are written in ascii, and if positive, in binary.
(next line)	Data sequence. Define the data sequence. The history information, nocas and nobch, is necessary to use idmpmode=1.

Table 7.13.38 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.

Table 7.13.39 stdcut

value	explanation
(optional, D=-1)	Threshold value of STD cut off.

When specifying stdcut, PHITS automatically stop the calculation depending on values of STD, standard deviation. This function is available when stdcut is positive and itall=0,1 is set in [parameters] section. When all relative values of STD of the tally result are larger than 0 and smaller than stdcut at the last of one batch, the calculation is stopped. If stdcut in two or more tally sections is set, all the results of the tally sections have to satisfy the conditions in order for the function to work.

In the [t-time] tally, the dump option can only be used with output=cutoff. If the dump option is set, the e-type and t-type meshes take on only the maximum and minimum values. When using this dump parameter, axis and file are restricted to one axis and one file, and unit is always 1. The dumped data are written onto a file named ***_dmp, where *** indicates the file name specified by file=*. The normal output of the tally is written on ***. From this file, information on the total normalization factor can be obtained; doing so requires setting one mesh each for e-type and t-type. Note that constraints based on the history counter, chmin and chmax, do not work with the dump function because the particle information is output to the dump file immediately after the condition specified by the output parameter is met. The history information, nocas and nobch, is necessary to use idmpmode=1 for continuous calculation using the dump file; in addition, both the dump file with _dmp and the normal output file specified by file are required to use idmpmode=1. The option dumpall is not compatible with this dump tally option when shared memory parallelization is active.