ucn/src/ExUCNExtraPhysics.cc

0001 //
0002 // ********************************************************************
0003 // * License and Disclaimer                                           *
0004 // *                                                                  *
0005 // * The  Geant4 software  is  copyright of the Copyright Holders  of *
0006 // * the Geant4 Collaboration.  It is provided  under  the terms  and *
0007 // * conditions of the Geant4 Software License,  included in the file *
0008 // * LICENSE and available at  http://cern.ch/geant4/license .  These *
0009 // * include a list of copyright holders.                             *
0010 // *                                                                  *
0011 // * Neither the authors of this software system, nor their employing *
0012 // * institutes,nor the agencies providing financial support for this *
0013 // * work  make  any representation or  warranty, express or implied, *
0014 // * regarding  this  software system or assume any liability for its *
0015 // * use.  Please see the license in the file  LICENSE  and URL above *
0016 // * for the full disclaimer and the limitation of liability.         *
0017 // *                                                                  *
0018 // * This  code  implementation is the result of  the  scientific and *
0019 // * technical work of the GEANT4 collaboration.                      *
0020 // * By using,  copying,  modifying or  distributing the software (or *
0021 // * any work based  on the software)  you  agree  to acknowledge its *
0022 // * use  in  resulting  scientific  publications,  and indicate your *
0023 // * acceptance of all terms of the Geant4 Software license.          *
0024 // ********************************************************************
0025 //
0026 //
0027 /// \file exoticphysics/ucn/src/ExUCNExtraPhysics.cc
0028 /// \brief Implementation of the ExUCNExtraPhysics class
0029 //
0030 //
0031 #include "ExUCNExtraPhysics.hh"
0032
0033 #include "G4Decay.hh"
0034 #include "G4DecayTable.hh"
0035 #include "G4NeutronBetaDecayChannel.hh"
0036 #include "G4ParticleDefinition.hh"
0037 #include "G4ProcessManager.hh"
0038 #include "G4StepLimiter.hh"
0039 #include "G4SystemOfUnits.hh"
0040 #include "G4Transportation.hh"
0041 #include "G4UCNAbsorption.hh"
0042 #include "G4UCNBoundaryProcess.hh"
0043 #include "G4UCNLoss.hh"
0044 #include "G4UCNMultiScattering.hh"
0045 #include "G4UserSpecialCuts.hh"
0046
0047 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0048
0049 ExUCNExtraPhysics::ExUCNExtraPhysics() : G4VPhysicsConstructor("Extra")
0050 {
0051   ;
0052 }
0053
0054 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0055
0056 ExUCNExtraPhysics::~ExUCNExtraPhysics()
0057 {
0058   ;
0059 }
0060
0061 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0062
0063 void ExUCNExtraPhysics::ConstructParticle()
0064 {
0065   ;
0066 }
0067
0068 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0069
0070 void ExUCNExtraPhysics::ConstructProcess()
0071 {
0072   auto particleIterator = GetParticleIterator();
0073   particleIterator->reset();
0074
0075   while ((*particleIterator)()) {
0076     G4ParticleDefinition* particle = particleIterator->value();
0077     G4ProcessManager* pmanager = particle->GetProcessManager();
0078     G4String particleName = particle->GetParticleName();
0079
0080     if (!pmanager) {
0081       std::ostringstream o;
0082       o << "Particle " << particleName << "without a Process Manager";
0083       G4Exception("ExUCNExtraPhysics::ConstructProcess()", "", FatalException, o.str().c_str());
0084     }
0085
0086     pmanager->AddDiscreteProcess(new G4StepLimiter());
0087     pmanager->AddDiscreteProcess(new G4UserSpecialCuts());
0088   }
0089
0090   ConstructUCN();
0091
0092   // G4Transportation::EnableMagneticMoment();
0093   G4Transportation::EnableGravity();
0094 }
0095
0096 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0097
0098 void ExUCNExtraPhysics::ConstructUCN()
0099 {
0100   auto particleIterator = GetParticleIterator();
0101   particleIterator->reset();
0102   G4ProcessManager* pmanager = NULL;
0103
0104   while ((*particleIterator)()) {
0105     G4ParticleDefinition* particle = particleIterator->value();
0106     pmanager = particle->GetProcessManager();
0107     G4String particleName = particle->GetParticleName();
0108
0109     if (!pmanager) {
0110       std::ostringstream o;
0111       o << "Particle " << particleName << "without a Process Manager";
0112       G4Exception("ExUCNExtraPhysics::ConstructProcess()", "", FatalException, o.str().c_str());
0113     }
0114
0115     if (particleName == "neutron") {
0116       pmanager->AddDiscreteProcess(new G4UCNLoss());
0117       pmanager->AddDiscreteProcess(new G4UCNAbsorption());
0118       pmanager->AddDiscreteProcess(new G4UCNMultiScattering());
0119
0120       G4UCNBoundaryProcess* ucnBoundaryProcess = new G4UCNBoundaryProcess();
0121       ucnBoundaryProcess->SetMicroRoughness(true);
0122       ucnBoundaryProcess->SetVerboseLevel(0);
0123
0124       pmanager->AddDiscreteProcess(ucnBoundaryProcess);
0125     }
0126   }
0127 }
0128
0129 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......