My First Volume - 5/5¶

Materials¶

A simple scintillator material is C9H10. It has two elements, Carbon and Hydrogen. The molecule has 9 and 10 atoms respectively.

The relevant lines in the material definition file (materials.pl) are:

$mat{"ncomponents"} = "2";
$mat{"components"}  = "C 9 H 10";

In order to use this material, first load it in the main script myFirst.pl by adding, right after the paddle.pl require, the lines:

# materials
require "./materials.pl";

To call the routine, put it in the loop (after build_target is ok):

materials();

Now the material will be loaded, with “myFirstscintillator” name. To use it, change the material entry in paddle.pl:

$detector{"material"} = "myFirstscintillator";

Execute the main script again:

./myFirst.pl config.dat

You should see that four files are created this time. Two additional files describe the materials [1].

Voilà, you are now assigning your very own material to the paddle. Remember you can change the variation in the gcard. Run gemc:

gemc example.gcard

You can verify the material in the GUI (detector page) or by specifying the option:

-MATERIAL_VERBOSITY=4.

Congratulations, you created your very first volumes and material in GEMC!

Footnotes