TRAX FAQ: How to ...

The examples shown here suppose that TRAX has correctly been setup, in particular the necessary environment variables (such as $TRAX) point to the correct locations.

... evaluate an axial dose distribution

Also known as depth dose distribution. Run

   exec $TRAX/TUTOR/evaladose.exec

   exec $TRAX/TUTOR/evaladose.exec '/tmp/'

The second option will place the output files in the /tmp directory.

... evaluate microdosimetric distributions

Also known as y-distribution and z-distribution. Run

   exec $TRAX/TUTOR/evalmdose.exec

   exec $TRAX/TUTOR/evalmdose.exec '/tmp/'

The second option will place the output files in the /tmp directory.

... evaluate energy and angular spectra of e- emitted from a medium

Run

   exec $TRAX/TUTOR/evalout.exec

   exec $TRAX/TUTOR/evalout.exec '/tmp/'

The second option will place the output files in the /tmp directory.

... simulate development of chemical species after irradiation

A simple case:

   exec $TRAX/TUTOR/dboxy.exec '' noxy '' '' e- 999 1000 0

This will calculate the development of radicals after the passage of a 999 keV electron, averaging 1000 primary electrons. The output will be the G-value as a function of time, stored in a gd-file.
Note that this a simple demo, producing a few ten thousand initial OH-radicals, which takes a few hundred seconds to calculate.
For being statistically significant, on the order of at least 100000 initial OH-radicals will be necessary.

... evaluate a radial dose distribution

Run

   exec $TRAX/TUTOR/evalrdose.exec

   exec $TRAX/TUTOR/evalrdose.exec '/tmp/'

The second option will place the output files in the /tmp directory.

... evaluate an r-z dose distribution

Run

   exec $TRAX/TUTOR/evalrzdose.exec

   exec $TRAX/TUTOR/evalrzdose.exec '/tmp/'

The second option will place the output files in the /tmp directory.

... evaluate a "spherical" dose distribution

Example:

   exec $TRAX/TUTOR/evalspheredose.exec '' keV00100 1 10000 0.10E-4

Simulates the dose distribution of 10000 electrons of 1 keV energy emitted from a point source. Results are recorded up to 0.10E-4 cm and placed in file evalspheredose.keV00100.gd

... evaluate a time-energy spectrum

Run

   exec $TRAX/TUTOR/evaltespc.exec

   exec $TRAX/TUTOR/evaltespc.exec '/tmp/'

The second option will place the output files in the /tmp directory.

... evaluate deposited energy spectra

This is an example for a volmode evaluation. Running:

   exec $TRAX/TUTOR/evalvolmode.exec '/tmp/'  00500 500 30

will accumlate the energy spectrum of 500 electrons of 00500E1 keV (== 5 MeV) electrons emitted under 30 degree within a box.

... supply a user evaluation function

Run

   exec $TRAX/TUTOR/evalusr.exec

   exec $TRAX/TUTOR/evalusr.exec '/tmp/' -64

The second option will build the user function in 64-bit mode and will place the output files in the /tmp directory.

Last updated: M.Kraemer,
$Id: traxhowto.html,v 1.6 2019/03/17 22:57:53 kraemer Exp $