G4Region with a different physics list

Physics Lists
1

Geant4 Version: 11.2
Operating System: linux el9
Compiler/Version: clang16
CMake Version:

Good morning,
I would like to use the liste “Shielding” in the DefaultRegionForTheWorld and to use ideally G4EmLivermore + Pixe (+ Std Had Physics) in a G4Region (as Livermore ad Pixe are time consuming).
Is it possible without redefining all the Livermore processes ? Thank you

Best regards,

Corinne Goy

2

Hi Corinne,

provided that you already defined the G4Region in which you would like to alter the EM physics, you can use the following macro command, assuming your G4Region is named “MyRegionName”:

/process/em/AddEmRegion DefaultRegionForTheWorld G4EmStandard
/process/em/AddEmRegion MyRegionName G4EmLivermore

You also find a full list of parameter candidates here:

For switching on/off PIXE and other atomic deexcitation physics, you can use the following command (see above link for the order: Fluorescence, Auger, PIXE):

/process/em/deexcitation DefaultRegionForTheWorld false false false
/process/em/deexcitation MyRegionName true true true

Best regards,
Birgit

3

Hello Birgit,

Thanks for ideas and links.

Best regards, Corinne