Import Geant4 9.1.0 source tree
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Gabriele Cosmo
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//
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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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//
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// $Id: G4CrossSectionIonisationRudd.cc,v 1.2 2007/11/09 16:20:16 pia Exp $
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// GEANT4 tag $Name: geant4-09-01 $
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//
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// Contact Author: Maria Grazia Pia (Maria.Grazia.Pia@cern.ch)
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//
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// Reference: TNS Geant4-DNA paper
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// Reference for implementation model: NIM. 155, pp. 145-156, 1978
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// History:
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// -----------
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// Date Name Modification
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// 28 Apr 2007 M.G. Pia Created in compliance with design described in TNS paper
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//
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// -------------------------------------------------------------------
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// Class description:
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// Geant4-DNA Cross total cross section for electron elastic scattering in water
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// Reference: TNS Geant4-DNA paper
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// S. Chauvie et al., Geant4 physics processes for microdosimetry simulation:
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// design foundation and implementation of the first set of models,
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// IEEE Trans. Nucl. Sci., vol. 54, no. 6, Dec. 2007.
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// Further documentation available from http://www.ge.infn.it/geant4/dna
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// -------------------------------------------------------------------
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#include "G4CrossSectionIonisationRudd.hh"
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#include "G4ParticleDefinition.hh"
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#include "G4Electron.hh"
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#include "G4Proton.hh"
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#include "G4Track.hh"
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#include "G4LogLogInterpolation.hh"
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#include "G4SystemOfUnits.hh"
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#include "G4DNAGenericIonsManager.hh"
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G4CrossSectionIonisationRudd::G4CrossSectionIonisationRudd()
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{
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name = "IonisationRudd";
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// Default energy limits (defined for protection against anomalous behaviour only)
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// ZERO LOW ENERGY LIMIT FOR ALLOWED KILLING
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lowEnergyLimitDefault = 0 * eV;
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highEnergyLimitDefault = 100 * MeV;
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G4String fileProton("dna/sigma_ionisation_p_rudd");
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G4String fileHydrogen("dna/sigma_ionisation_h_rudd");
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G4String fileAlphaPlusPlus("dna/sigma_ionisation_alphaplusplus_rudd");
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G4String fileAlphaPlus("dna/sigma_ionisation_alphaplus_rudd");
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G4String fileHelium("dna/sigma_ionisation_he_rudd");
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G4DNAGenericIonsManager *instance;
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instance = G4DNAGenericIonsManager::Instance();
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G4ParticleDefinition* protonDef = G4Proton::ProtonDefinition();
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G4ParticleDefinition* hydrogenDef = instance->GetIon("hydrogen");
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G4ParticleDefinition* alphaPlusPlusDef = instance->GetIon("alpha++");
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G4ParticleDefinition* alphaPlusDef = instance->GetIon("alpha+");
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G4ParticleDefinition* heliumDef = instance->GetIon("helium");
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G4String proton;
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G4String hydrogen;
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G4String alphaPlusPlus;
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G4String alphaPlus;
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G4String helium;
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// Factor to scale microscopic/macroscopic cross section data in water
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// ---- MGP ---- Hardcoded (taken from prototype code); to be replaced with proper calculation
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G4double scaleFactor = 1 * m*m;
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// Data members for protons
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if (protonDef != 0)
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{
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proton = protonDef->GetParticleName();
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tableFile[proton] = fileProton;
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// Energy limits
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lowEnergyLimit[proton] = 0. * eV;
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highEnergyLimit[proton] = 500. * keV;
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// Create data set with proton cross section data and load values stored in file
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G4DNACrossSectionDataSet* tableProton = new G4DNACrossSectionDataSet(new G4LogLogInterpolation,
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eV,
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scaleFactor );
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tableProton->LoadData(fileProton);
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// Insert key-table pair in map
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tableData[proton] = tableProton;
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}
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else
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{
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G4Exception("G4CrossSectionIonisationRudd Constructor: proton is not defined");
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}
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// Data members for hydrogen
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if (hydrogenDef != 0)
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{
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hydrogen = hydrogenDef->GetParticleName();
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tableFile[hydrogen] = fileHydrogen;
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// Energy limits
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lowEnergyLimit[hydrogen] = 0. * eV;
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highEnergyLimit[hydrogen] = 100. * MeV;
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// Create data set with hydrogen cross section data and load values stored in file
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G4DNACrossSectionDataSet* tableHydrogen = new G4DNACrossSectionDataSet(new G4LogLogInterpolation,
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eV,
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scaleFactor );
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tableHydrogen->LoadData(fileHydrogen);
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// Insert key-table pair in map
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tableData[hydrogen] = tableHydrogen;
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}
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else
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{
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G4Exception("G4CrossSectionIonisationRudd Constructor: hydrogen is not defined");
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}
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// Data members for alphaPlusPlus
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if (alphaPlusPlusDef != 0)
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{
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alphaPlusPlus = alphaPlusPlusDef->GetParticleName();
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tableFile[alphaPlusPlus] = fileAlphaPlusPlus;
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// Energy limits
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lowEnergyLimit[alphaPlusPlus] = 0. * keV;
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highEnergyLimit[alphaPlusPlus] = 10. * MeV;
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// Create data set with hydrogen cross section data and load values stored in file
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G4DNACrossSectionDataSet* tableAlphaPlusPlus = new G4DNACrossSectionDataSet(new G4LogLogInterpolation,
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eV,
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scaleFactor );
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tableAlphaPlusPlus->LoadData(fileAlphaPlusPlus);
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// Insert key-table pair in map
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tableData[alphaPlusPlus] = tableAlphaPlusPlus;
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}
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else
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{
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G4Exception("G4CrossSectionIonisationRudd Constructor: alphaPlusPlus is not defined");
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}
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// Data members for alphaPlus
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if (alphaPlusDef != 0)
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{
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alphaPlus = alphaPlusDef->GetParticleName();
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tableFile[alphaPlus] = fileAlphaPlus;
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// Energy limits
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lowEnergyLimit[alphaPlus] = 0. * keV;
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highEnergyLimit[alphaPlus] = 10. * MeV;
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// Create data set with hydrogen cross section data and load values stored in file
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G4DNACrossSectionDataSet* tableAlphaPlus = new G4DNACrossSectionDataSet(new G4LogLogInterpolation,
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eV,
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scaleFactor );
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tableAlphaPlus->LoadData(fileAlphaPlus);
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// Insert key-table pair in map
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tableData[alphaPlus] = tableAlphaPlus;
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}
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else
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{
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G4Exception("G4CrossSectionIonisationRudd Constructor: alphaPlus is not defined");
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}
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// Data members for helium
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if (heliumDef != 0)
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{
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helium = heliumDef->GetParticleName();
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tableFile[helium] = fileHelium;
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// Energy limits
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lowEnergyLimit[helium] = 0. * keV;
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highEnergyLimit[helium] = 10. * MeV;
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// Create data set with hydrogen cross section data and load values stored in file
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G4DNACrossSectionDataSet* tableHelium = new G4DNACrossSectionDataSet(new G4LogLogInterpolation,
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eV,
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scaleFactor );
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tableHelium->LoadData(fileHelium);
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// Insert key-table pair in map
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tableData[helium] = tableHelium;
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}
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else
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{
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G4Exception("G4CrossSectionIonisationRudd Constructor: helium is not defined");
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}
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}
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G4CrossSectionIonisationRudd::~G4CrossSectionIonisationRudd()
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{
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// Destroy the content of the map
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std::map< G4String,G4DNACrossSectionDataSet*,std::less<G4String> >::iterator pos;
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for (pos = tableData.begin(); pos != tableData.end(); ++pos)
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{
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G4DNACrossSectionDataSet* table = pos->second;
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delete table;
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}
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}
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G4double G4CrossSectionIonisationRudd::CrossSection(const G4Track& track )
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{
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const G4DynamicParticle* particle = track.GetDynamicParticle();
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G4double k = particle->GetKineticEnergy();
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G4DNAGenericIonsManager *instance;
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instance = G4DNAGenericIonsManager::Instance();
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if (
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track.GetDefinition() != G4Proton::ProtonDefinition()
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&&
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track.GetDefinition() != instance->GetIon("hydrogen")
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&&
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track.GetDefinition() != instance->GetIon("alpha++")
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&&
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track.GetDefinition() != instance->GetIon("alpha+")
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&&
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track.GetDefinition() != instance->GetIon("helium")
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)
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G4Exception("G4CrossSectionIonisationRudd: attempting to calculate cross section for wrong particle");
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// Cross section = 0 outside the energy validity limits set in the constructor
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G4double sigma = 0.;
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// ---- MGP ---- Better handling of these limits to be set in a following design iteration
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G4double lowLim = lowEnergyLimitDefault;
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G4double highLim = highEnergyLimitDefault;
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const G4String& particleName = particle->GetDefinition()->GetParticleName();
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// Retrieve energy limits for the current particle type
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std::map< G4String,G4double,std::less<G4String> >::iterator pos1;
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pos1 = lowEnergyLimit.find(particleName);
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// Lower limit
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if (pos1 != lowEnergyLimit.end())
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{
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lowLim = pos1->second;
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}
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// Upper limit
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std::map< G4String,G4double,std::less<G4String> >::iterator pos2;
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pos2 = highEnergyLimit.find(particleName);
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if (pos2 != highEnergyLimit.end())
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{
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highLim = pos2->second;
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}
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// Verify that the current track is within the energy limits of validity of the cross section model
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if (k >= lowLim && k <= highLim)
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{
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std::map< G4String,G4DNACrossSectionDataSet*,std::less<G4String> >::iterator pos;
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pos = tableData.find(particleName);
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if (pos != tableData.end())
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{
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G4DNACrossSectionDataSet* table = pos->second;
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if (table != 0)
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{
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// Cross section
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sigma = table->FindValue(k);
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// BEGIN ELECTRON CORRECTION
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// add ONE or TWO electron-water excitation for alpha+ and helium
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if ( particle->GetDefinition() == instance->GetIon("alpha+")
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particle->GetDefinition() == instance->GetIon("helium")
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)
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{
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G4DNACrossSectionDataSet* electronDataset = new G4DNACrossSectionDataSet
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(new G4LogLogInterpolation, eV, (1./3.343e22)*m*m);
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electronDataset->LoadData("dna/sigma_ionisation_e_born");
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G4double kElectron = k * 0.511/3728;
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if ( particle->GetDefinition() == instance->GetIon("alpha+") )
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{
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G4double tmp1 = table->FindValue(k) + electronDataset->FindValue(kElectron);
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delete electronDataset;
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return tmp1;
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}
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if ( particle->GetDefinition() == instance->GetIon("helium") )
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{
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G4double tmp2 = table->FindValue(k) + 2. * electronDataset->FindValue(kElectron);
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delete electronDataset;
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return tmp2;
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}
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}
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// END ELECTRON CORRECTION
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}
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}
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else
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{
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// The track does not corresponds to a particle pertinent to this model
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G4Exception("G4CrossSectionIonisationRudd: attempting to calculate cross section for wrong particle");
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}
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}
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return sigma;
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}
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