G4TheoFSGenerator* FTFC_model = new G4TheoFSGenerator();
G4StringChipsParticleLevelInterface* theCascade = new G4StringChipsParticleLevelInterface();
FTFC_model->SetTransport(theCascade);
G4LundStringFragmentation* theFragmentation = new G4LundStringFragmentation();
G4ExcitedStringDecay* theStringDecay = new G4ExcitedStringDecay(theFragmentation);
G4FTFModel* theStringModel = new G4FTFModel;
theStringModel->SetFragmentationModel(theStringDecay);
FTFC_model->SetHighEnergyGenerator(theStringModel);