Gabriele Cosmo
212 lines
7.0 KiB
C++
212 lines
7.0 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: G4LossTableBuilder.cc,v 1.27 2008/07/22 15:55:15 vnivanch Exp $
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// GEANT4 tag $Name: geant4-09-02 $
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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: G4LossTableBuilder
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//
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// Author: Vladimir Ivanchenko
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//
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// Creation date: 03.01.2002
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//
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// Modifications:
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//
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// 23-01-03 V.Ivanchenko Cut per region
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// 21-07-04 V.Ivanchenko Fix problem of range for dedx=0
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// 08-11-04 Migration to new interface of Store/Retrieve tables (V.Ivanchenko)
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// 07-12-04 Fix of BuildDEDX table (V.Ivanchenko)
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// 27-03-06 Add bool options isIonisation (V.Ivanchenko)
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// 16-01-07 Fill new (not old) DEDX table (V.Ivanchenko)
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// 12-02-07 Use G4LPhysicsFreeVector for the inverse range table (V.Ivanchenko)
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//
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// Class Description:
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//
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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 "G4LossTableBuilder.hh"
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#include "G4PhysicsTable.hh"
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#include "G4PhysicsLogVector.hh"
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#include "G4PhysicsTableHelper.hh"
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#include "G4LPhysicsFreeVector.hh"
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4LossTableBuilder::G4LossTableBuilder()
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{
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splineFlag = true;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4LossTableBuilder::~G4LossTableBuilder()
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{}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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void
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G4LossTableBuilder::BuildDEDXTable(G4PhysicsTable* dedxTable,
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const std::vector<G4PhysicsTable*>& list)
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{
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size_t n_processes = list.size();
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if(1 >= n_processes) return;
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size_t n_vectors = (list[0])->length();
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if(0 >= n_vectors) return;
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G4bool b;
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G4PhysicsVector* pv = (*(list[0]))[0];
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size_t nbins = pv->GetVectorLength();
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G4double elow = pv->GetLowEdgeEnergy(0);
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G4double ehigh = pv->GetLowEdgeEnergy(nbins);
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for (size_t i=0; i<n_vectors; i++) {
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pv = new G4PhysicsLogVector(elow, ehigh, nbins);
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pv->SetSpline(splineFlag);
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for (size_t j=0; j<nbins; j++) {
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G4double dedx = 0.0;
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G4double energy = pv->GetLowEdgeEnergy(j);
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for (size_t k=0; k<n_processes; k++) {
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dedx += ((*(list[k]))[i])->GetValue(energy, b);
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}
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pv->PutValue(j, dedx);
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G4PhysicsTableHelper::SetPhysicsVector(dedxTable, i, pv);
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}
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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void G4LossTableBuilder::BuildRangeTable(const G4PhysicsTable* dedxTable,
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G4PhysicsTable* rangeTable,
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G4bool isIonisation)
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// Build range table from the energy loss table
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{
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size_t n_vectors = dedxTable->length();
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if(!n_vectors) return;
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G4bool b;
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size_t n = 100;
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G4double del = 1.0/(G4double)n;
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for (size_t i=0; i<n_vectors; i++) {
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if (rangeTable->GetFlag(i) || !isIonisation) {
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G4PhysicsVector* pv = (*dedxTable)[i];
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size_t nbins = pv->GetVectorLength();
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size_t bin0 = 0;
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G4double elow = pv->GetLowEdgeEnergy(0);
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G4double ehigh = pv->GetLowEdgeEnergy(nbins);
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G4double dedx1 = pv->GetValue(elow, b);
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// protection for specific cases dedx=0
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if(dedx1 == 0.0) {
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for (size_t k=1; k<nbins; k++) {
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bin0++;
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elow = pv->GetLowEdgeEnergy(k);
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dedx1 = pv->GetValue(elow, b);
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if(dedx1 > 0.0) break;
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}
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nbins -= bin0;
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}
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// initialisation of a new vector
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G4PhysicsLogVector* v = new G4PhysicsLogVector(elow, ehigh, nbins);
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v->SetSpline(splineFlag);
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// assumed dedx proportional to beta
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G4double range = 2.*elow/dedx1;
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v->PutValue(0,range);
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G4double energy1 = elow;
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for (size_t j=1; j<nbins; j++) {
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G4double energy2 = pv->GetLowEdgeEnergy(j+bin0);
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G4double de = (energy2 - energy1) * del;
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G4double energy = energy2 + de*0.5;
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for (size_t k=0; k<n; k++) {
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energy -= de;
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dedx1 = pv->GetValue(energy, b);
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if(dedx1 > 0.0) range += de/dedx1;
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}
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// G4cout << "Range i= " <<i << " j= " << j << G4endl;
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v->PutValue(j,range);
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energy1 = energy2;
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}
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G4PhysicsTableHelper::SetPhysicsVector(rangeTable, i, v);
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}
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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void G4LossTableBuilder::BuildInverseRangeTable(const G4PhysicsTable* rangeTable,
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G4PhysicsTable* invRangeTable,
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G4bool isIonisation)
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// Build inverse range table from the energy loss table
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{
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size_t n_vectors = rangeTable->length();
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if(!n_vectors) return;
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G4bool b;
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for (size_t i=0; i<n_vectors; i++) {
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if (invRangeTable->GetFlag(i) || !isIonisation) {
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G4PhysicsVector* pv = (*rangeTable)[i];
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size_t nbins = pv->GetVectorLength();
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G4double elow = pv->GetLowEdgeEnergy(0);
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G4double ehigh = pv->GetLowEdgeEnergy(nbins-1);
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G4double rlow = pv->GetValue(elow, b);
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G4double rhigh = pv->GetValue(ehigh, b);
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G4LPhysicsFreeVector* v = new G4LPhysicsFreeVector(nbins,rlow,rhigh);
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v->SetSpline(splineFlag);
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for (size_t j=0; j<nbins; j++) {
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G4double e = pv->GetLowEdgeEnergy(j);
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G4double r = pv->GetValue(e, b);
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v->PutValues(j,r,e);
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}
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v->PutValues(nbins,rhigh+rlow,ehigh);
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G4PhysicsTableHelper::SetPhysicsVector(invRangeTable, i, v);
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}
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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