Gabriele Cosmo
165 lines
6.6 KiB
C++
165 lines
6.6 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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// $Id: G4eBremsstrahlung.cc,v 1.56 2009-02-20 12:06:37 vnivanch Exp $
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// GEANT4 tag $Name: not supported by cvs2svn $
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//
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// -------------------------------------------------------------------
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//
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// GEANT4 Class file
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//
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//
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// File name: G4eBremsstrahlung
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//
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// Author: Michel Maire
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//
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// Creation date: 26.06.1996
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//
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// Modifications:
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//
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// 26-09-96 extension of the total crosssection above 100 GeV, M.Maire
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// 1-10-96 new type G4OrderedTable; ComputePartialSumSigma(), M.Maire
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// 16-10-96 DoIt() call to the non static GetEnergyCuts(), L.Urban
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// 13-12-96 Sign corrected in grejmax and greject
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// error definition of screenvar, L.Urban
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// 20-03-97 new energy loss+ionisation+brems scheme, L.Urban
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// 07-04-98 remove 'tracking cut' of the diffracted particle, MMa
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// 13-08-98 new methods SetBining() PrintInfo()
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// 03-03-99 Bug fixed in LPM effect, L.Urban
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// 10-02-00 modifications , new e.m. structure, L.Urban
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// 07-08-00 new cross section/en.loss parametrisation, LPM flag , L.Urban
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// 21-09-00 corrections in the LPM implementation, L.Urban
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// 28-05-01 V.Ivanchenko minor changes to provide ANSI -wall compilation
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// 09-08-01 new methods Store/Retrieve PhysicsTable (mma)
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// 17-09-01 migration of Materials to pure STL (mma)
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// 21-09-01 completion of RetrievePhysicsTable() (mma)
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// 29-10-01 all static functions no more inlined (mma)
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// 08-11-01 particleMass becomes a local variable
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// 30-04-02 V.Ivanchenko update to new design
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// 23-12-02 Change interface in order to move to cut per region (VI)
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// 26-12-02 Secondary production moved to derived classes (VI)
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// 23-05-03 Define default integral + BohrFluctuations (V.Ivanchenko)
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// 08-08-03 STD substitute standard (V.Ivanchenko)
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// 12-11-03 G4EnergyLossSTD -> G4EnergyLossProcess (V.Ivanchenko)
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// 04-11-04 add gamma threshold (V.Ivanchenko)
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// 08-11-04 Migration to new interface of Store/Retrieve tables (V.Ivantchenko)
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// 08-04-05 Major optimisation of internal interfaces (V.Ivantchenko)
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// 22-05-06 Use gammaThreshold from manager (V.Ivantchenko)
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// 15-01-07 use SetEmModel() from G4VEnergyLossProcess (mma)
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// use RelEmModel above 1GeV (AS & VI)
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// 13-11-08 reenable LPM switch (A.Schaelicke)
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// -------------------------------------------------------------------
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//
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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#include "G4eBremsstrahlung.hh"
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#include "G4Gamma.hh"
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#include "G4eBremsstrahlungModel.hh"
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#include "G4SeltzerBergerModel.hh"
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#include "G4eBremsstrahlungRelModel.hh"
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#include "G4UnitsTable.hh"
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#include "G4LossTableManager.hh"
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#include "G4ProductionCutsTable.hh"
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#include "G4MaterialCutsCouple.hh"
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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using namespace std;
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G4eBremsstrahlung::G4eBremsstrahlung(const G4String& name):
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G4VEnergyLossProcess(name),
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isInitialised(false)
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{
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SetProcessSubType(fBremsstrahlung);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4eBremsstrahlung::~G4eBremsstrahlung()
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{}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4bool G4eBremsstrahlung::IsApplicable(const G4ParticleDefinition& p)
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{
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return (&p == G4Electron::Electron() || &p == G4Positron::Positron());
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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void
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G4eBremsstrahlung::InitialiseEnergyLossProcess(const G4ParticleDefinition*,
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const G4ParticleDefinition*)
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{
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if(!isInitialised) {
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SetSecondaryParticle(G4Gamma::Gamma());
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SetIonisation(false);
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// if (!EmModel(1)) { SetEmModel(new G4eBremsstrahlungModel(), 1); }
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if (!EmModel(1)) { SetEmModel(new G4SeltzerBergerModel(), 1); }
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if (!EmModel(2)) { SetEmModel(new G4eBremsstrahlungRelModel(), 2); }
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G4double energyLimit = 1*GeV;
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EmModel(1)->SetLowEnergyLimit(MinKinEnergy());
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EmModel(1)->SetHighEnergyLimit(energyLimit);
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EmModel(2)->SetLowEnergyLimit(energyLimit);
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EmModel(2)->SetHighEnergyLimit(MaxKinEnergy());
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G4VEmFluctuationModel* fm = 0;
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AddEmModel(1, EmModel(1), fm);
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AddEmModel(2, EmModel(2), fm);
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isInitialised = true;
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}
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G4LossTableManager* man = G4LossTableManager::Instance();
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G4double eth = man->BremsstrahlungTh();
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EmModel(1)->SetSecondaryThreshold(eth);
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EmModel(2)->SetSecondaryThreshold(eth);
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// Only high energy model LMP flag is ON/OFF
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EmModel(1)->SetLPMFlag(false);
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EmModel(2)->SetLPMFlag(man->LPMFlag());
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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void G4eBremsstrahlung::PrintInfo()
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{
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if(EmModel(1)) {
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G4LossTableManager* man = G4LossTableManager::Instance();
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G4double eth = man->BremsstrahlungTh();
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G4cout << " LPM flag: " << man->LPMFlag() << " for E > "
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<< EmModel(1)->HighEnergyLimit()/GeV << " GeV";
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if(eth < DBL_MAX) {
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G4cout << ", HighEnergyThreshold(GeV)= " << eth/GeV;
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}
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G4cout << G4endl;
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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