Gabriele Cosmo
124 lines
4.3 KiB
C++
124 lines
4.3 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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//
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//
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// ------------------------------------------------------------
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// GEANT 4 class implementation
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//
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// ------- GVFlashShowerParameterisation -------
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//
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// Authors: Joanna Weng - 11.2005
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// ------------------------------------------------------------
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#include <cmath>
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#include "GVFlashShowerParameterisation.hh"
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#include "G4PhysicalConstants.hh"
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#include "G4SystemOfUnits.hh"
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#include "Randomize.hh"
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#include "G4ios.hh"
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#include "G4Material.hh"
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#include "Gamma.hh" // @@@@
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#include "G4MaterialTable.hh"
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GVFlashShowerParameterisation::GVFlashShowerParameterisation()
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: thePar(0), density(0.), A(0.), Z(0.), X0(0.), Ec(0.), Rm(0.), NSpot(0.)
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{
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fGamma = new MyGamma;
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}
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GVFlashShowerParameterisation::~GVFlashShowerParameterisation()
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{
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delete fGamma;
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}
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G4double GVFlashShowerParameterisation::GetEffZ(const G4Material* mat)
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{
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// Returns Z or effective Z=sum(pi*Zi) (if compound/mixture)
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// of given material
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//
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G4double z = 0.;
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G4int nofElements = (G4int)mat->GetNumberOfElements();
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if (nofElements > 1) {
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for (G4int i = 0; i < nofElements; ++i) {
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G4double zOfElement = mat->GetElement(i)->GetZ();
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G4double massFraction = mat->GetFractionVector()[i];
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// cout << mat->GetElement(i)->GetName()
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// <<" Z= "<<zOfElement << " , Fraction= "<<massFraction <<endl;
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z += zOfElement * massFraction;
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}
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}
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else {
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z = mat->GetZ();
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}
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return z;
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}
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G4double GVFlashShowerParameterisation::GetEffA(const G4Material* mat)
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{
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// Returns A or effective A=sum(pi*Ai) (if compound/mixture)
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// of given material
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//
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G4double a = 0.;
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G4int nofElements = (G4int)mat->GetNumberOfElements();
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if (nofElements > 1) {
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for (G4int i = 0; i < nofElements; ++i) {
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G4double aOfElement = mat->GetElement(i)->GetA() / (g / mole);
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G4double massFraction = mat->GetFractionVector()[i];
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a += aOfElement * massFraction;
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}
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}
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else {
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a = mat->GetA() / (g / mole);
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}
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return a;
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}
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void GVFlashShowerParameterisation::PrintMaterial(const G4Material* mat)
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{
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G4cout << "/********************************************/ " << G4endl;
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G4cout << " - GVFlashShowerParameterisation::Material - " << G4endl;
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G4cout << " Material : " << mat->GetName() << G4endl;
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G4cout << " Z = " << Z << G4endl;
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G4cout << " A = " << A << G4endl;
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G4cout << " X0 = " << X0 / cm << " cm" << G4endl;
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G4cout << " Rm = " << Rm / cm << " cm" << G4endl;
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G4cout << " Ec = " << Ec / MeV << " MeV" << G4endl;
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G4cout << "/********************************************/ " << G4endl;
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}
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G4double GVFlashShowerParameterisation::GeneratePhi()
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{
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G4double Phi = twopi*G4UniformRand() ;
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return Phi;
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}
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G4double GVFlashShowerParameterisation::gam(G4double x, G4double a) const
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{
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return fGamma->Gamma(a, x);
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}
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