Page History

Overview

The LCPhys is a Geant4 physics list was written by Dennis Wright and is taylored for ILC physicsfor simulation of events in ILC detectors.

LCPhys Source Code Documentation (doxygen)

LCPhys Thin Target Tests

LCPhys contains the following classes.

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Applies G4Decay process to all applicable particles.

Bosons

LCBosonPhysics

• G4Geantino
• G4ChargedGeantino
• G4Gamma
  • G4GammaConversion
  • G4ComptonScattering
  • G4PhotoElectricEffect
  • G4GammaNuclearReaction -
• geantino
• gamma
  • gamma nuclear low
    • 0 to 3.5 GeV
  • G4TheoFSGenerator - high energy gamma nuclear high (refer to LCBosonPhysics.cc for more details)
    • G4TheoFSGenerator
      • model
    • G4GeneratorPrecompoundInterface
      • transport
    • G4QGSModel
    • G4QGSMFragmentation
      • fragmentation
    • G4ExcitedStringDecay
      • fragmentation model
    • 3.0 GeV to 100.0 TeV
  • gamma conversion
  • compton scattering
  • photoelectric effect

Leptons

• electron
  • multiple scattering
  • electron ionisation
  • electron bremsstrahlung
  • electro-nuclear reaction
• positron
  • multiple scattering
  • electron ionisation
  • electron bremsstrahlung
  • electron-positron annihilation
  • electro-nuclear reaction
• mu-
  • multiple scattering
  • muon ionisation
  • muon bremsstrahlung
  • muon pair production
• mu+
  • multiple scattering
  • muon ionisation
  • muon bremsstrahlung
  • muon pair production
• tau-
  • multiple scattering
  • ionisation
• tau+
  • multiple scattering
  • ionisation
• nueutrino_e
• antineutrino_e
• neutrino_mu
• antineutrino_mu
• neutrino_tau
• antineutrino_tau

Hadron Physics

• • model
    • 3.0 GeV to 100.0 TeV
    • G4GeneratorPrecompoundInterface - high energy gamma transport
    • G4QGSModel - string model
    • G4QGSMFragmentation - string fragmentation model (template)
    • G4ExcitedStringDecay - concrete fragmentation model

Leptons

LCLeptonPhysics

• G4Electron, G4Positron
  • G4MultipleScattering
  • G4eIonisation
  • G4eBremsstrahlung
• G4Electron
  • G4ElectronNuclearProcess
    • G4ElectroNuclearReaction
• G4Positron
  • G4eplusAnnihilation
  • G4PositronNuclearProcess
    • G4ElectroNuclearReaction
• G4MuonMinus, G4MuonPlus
  • G4MultipleScattering
  • G4MuIonisation
  • G4MuBremsstrahlung
  • G4MuPairProduction
• G4TauMinus, G4TauPlus
  • G4MultipleScattering
  • G4hIonisation
• G4NeutrinoE
• G4AntiNeutrinoE
• G4NeutrinoMu
• G4AntiNeutrinoMu
• G4NeutrinoTau
• G4AntiNeutrinoTau

Hadron Physics

LCHadronPhysics

This class creates the mesons using G4MesonConstructor, baryons with G4BaryonConstructor, and resonances and quarks with G4ShortLivedConstructor.

Hadron Models

• hadronic elastic process and model - same for all hadrons
  • G4HadronElasticProcess
    • G4LElastic

G4HadronElasticProcess* elasticProcess = new G4HadronElasticProcess();
G4LElastic* elasticModel = new G4LElastic();
elasticProcess->RegisterMe(elasticModel);

• Bertini cascade model for p,n,pi+,pi- between 0 and 9.9 GeV

G4CascadeInterface* bertiniModel = new G4CascadeInterface();
bertiniModel->SetMaxEnergy(9.9*GeV);

• Bertini cascade model for K+,K-,K0L,K0S,Lambda,Sigma+,Sigma-,Xi0,Xi- between 0 and 13 GeV

G4CascadeInterface* bertiniModelStrange = new G4CascadeInterface();
bertiniModelStrange->SetMaxEnergy(13*GeV);

• Low energy parameterized models between 9.5 and 25 GeV
  • The LEP models are defined for each type of particle. (see below)
• Quark-Gluon String Model (QGSP) for p,n,pi+,pi-,K+,K-,K0L,K0S between 12 GeV and 100 TeV
  • G4TheoFSGenerator
    • G4GeneratorPrecompoundInterface - transport
      • G4PreCompoundModel - deexcitation
    • G4QGSModel - high energy generator
      • G4ExcitedStringDecay - fragmentation model
        • G4QGSMFragmentation - Quark-Gluon String model fragmentation

Defining the QGSP process and model in LCHadronPhysics.cc.

G4TheoFSGenerator* QGSPModel = new G4TheoFSGenerator();
G4GeneratorPrecompoundInterface* theCascade = new G4GeneratorPrecompoundInterface();
G4ExcitationHandler* exHandler = new G4ExcitationHandler();
G4PreCompoundModel* preCompound = new G4PreCompoundModel(exHandler);
theCascade->SetDeExcitation(preCompound);
QGSPModel->SetTransport(theCascade);
G4QGSMFragmentation* frag = new G4QGSMFragmentation();
G4ExcitedStringDecay* stringDecay = new G4ExcitedStringDecay(frag);
G4QGSModel<G4QGSParticipants>* stringModel = new G4QGSModel<G4QGSParticipants>();
stringModel->SetFragmentationModel(stringDecay);
QGSPModel->SetHighEnergyGenerator(stringModel);   
QGSPModel->SetMinEnergy(12*GeV);
QGSPModel->SetMaxEnergy(100*TeV);

• G4PionPlus
• G4PionMinus
• G4KaonPlus
• G4KaonMinus
• G4KaonZeroLong
• G4KaonZeroShort
• G4Proton
• G4AntiProton
• G4Neutron
• G4AntiNeutron
• G4Lambda
• G4AntiLambda
• G4SigmaMinus
• G4AntiSigmaMinus
• G4SigmaPlus
• G4AntiSigmaPlus
• G4XiMinus
• G4AntiXiMinus
• G4XiZero
• G4AntiXiZero
• G4OmegaMinus
• G4AntiOmegaMinus

Ion Physics

LCIonPhysics

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