Location: $SCIG/examples/simple_mats

The setup is 5 different targets with materials built using diffent methods.

The geometry is constructed using the python script:

./material_example.py

Sets the desired number of cores, number of events, and verbosity in the jcard ‘material_example.jcard’. To run gemc:

gemc material_example.jcard 

Use the -gui option to run interactively:

gemc material_example.jcard -gui

The geometry looks like this:

![scint_array]{:width=”70%”}

Another picture with 1000 events leaving hit in the sensitive bars:

Target 1:

Uses a material from the Geant4 Material database.

Target 2:

Defines my_peek using fractional masses of materials from the Geant4 Material database.

Target 3:

Defines my_epoxy using number of atoms of pre-defined Geant4 elements.

Target 4:

Defines my_carbonFiber using fractional masses of my_epoxyand from the Geant4 Material database.

Target 5:

Defines my_resistPaste which uses a material from the Geant4 Material database, but with a different density.

The code that produce the geometry: