Last modified :
The Shielding physics list was originally developed for neutron penetration studies and ion-ion collisions, but it may also be used for high energy calorimetry and for underground or low background experiments. Its high energy part is taken from the FTFP_BERT physics list (now recommended by Geant4 for HEP) and radioactive decay has been added to deal with background radiation.
All of the Geant4 reference physics lists, including Shielding and FTFP_BERT, are templated code which makes it difficult to know which processes, models and cross sections are in use at a given energy for a given particle. A detailed description of the Shielding physics list is provided which includes this information.
#include "Shielding.hh"
G4RunManager* runManager = new G4RunManager;
runManager->SetUserInitialization(new Shielding);