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geant4/source/processes/electromagnetic/muons/src/G4MuonToMuonPairProduction.cc
T
2022-12-09 14:43:28 +01:00

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3.7 KiB
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//
// ********************************************************************
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// -------------------------------------------------------------------
//
// GEANT4 Class file
//
//
// File name: G4MuonToMuonPairProduction
//
// Author: Siddharth Yajaman on the base of Vladamir Ivantchenko/Laszlo Urban code
//
// Creation date: 12.07.2022
//
// Modifications:
//
//
// -------------------------------------------------------------------
//
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#include "G4MuonToMuonPairProduction.hh"
#include "G4SystemOfUnits.hh"
#include "G4MuonPlus.hh"
#include "G4VEmModel.hh"
#include "G4MuonToMuonPairProductionModel.hh"
#include "G4ElementData.hh"
#include "G4EmParameters.hh"
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G4MuonToMuonPairProduction::G4MuonToMuonPairProduction(const G4String& name)
: G4MuPairProduction(name)
{
SetProcessSubType(49);
SetSecondaryParticle(G4MuonPlus::MuonPlus());
}
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void G4MuonToMuonPairProduction::InitialiseEnergyLossProcess(
const G4ParticleDefinition* part,
const G4ParticleDefinition*)
{
if (isInitialised) { return; }
isInitialised = true;
theParticle = part;
lowestKinEnergy = std::max(lowestKinEnergy, part->GetPDGMass()*8.0);
G4VEmModel* mod = EmModel(0);
if(nullptr == mod) {
mod = new G4MuonToMuonPairProductionModel(part);
SetEmModel(mod);
}
G4VEmFluctuationModel* fm = nullptr;
G4EmParameters* param = G4EmParameters::Instance();
mod->SetLowEnergyLimit(param->MinKinEnergy());
mod->SetHighEnergyLimit(param->MaxKinEnergy());
mod->SetSecondaryThreshold(param->MuHadBremsstrahlungTh());
AddEmModel(1, mod, fm);
}
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void G4MuonToMuonPairProduction::ProcessDescription(std::ostream& out) const
{
out << " Muon-anti-muon pair production by muons";
G4MuPairProduction::ProcessDescription(out);
}
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