Import Geant4 6.2.0 source tree

2016-06-09 10:56:29 +02:00
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+//
+// ********************************************************************
+// * DISCLAIMER                                                       *
+// *                                                                  *
+// * The following disclaimer summarizes all the specific disclaimers *
+// * of contributors to this software. The specific disclaimers,which *
+// * govern, are listed with their locations in:                      *
+// *   http://cern.ch/geant4/license                                  *
+// *                                                                  *
+// * Neither the authors of this software system, nor their employing *
+// * institutes,nor the agencies providing financial support for this *
+// * work  make  any representation or  warranty, express or implied, *
+// * regarding  this  software system or assume any liability for its *
+// * use.                                                             *
+// *                                                                  *
+// * This  code  implementation is the  intellectual property  of the *
+// * GEANT4 collaboration.                                            *
+// * By copying,  distributing  or modifying the Program (or any work *
+// * based  on  the Program)  you indicate  your  acceptance of  this *
+// * statement, and all its terms.                                    *
+// ********************************************************************
+//
+
+///////////////////////////////////////////////////////////////////////////////
+//
+// MODULE:        G4SingleParticleSource.hh
+//
+// Version:      1.0
+// Date:         5/02/04
+// Author:       Fan Lei 
+// Organisation: QinetiQ ltd.
+// Customer:     ESA/ESTEC
+//
+///////////////////////////////////////////////////////////////////////////////
+//
+// CHANGE HISTORY
+// --------------
+//
+// Version 1.0, 05/02/2004, Fan Lei, Created.
+//      Based on the G4GeneralParticleSource class in Geant4 v6.0
+//
+///////////////////////////////////////////////////////////////////////////////
+//
+#include "G4PrimaryParticle.hh"
+#include "G4Event.hh"
+#include "Randomize.hh"
+#include <math.h>
+#include "G4ParticleTable.hh"
+#include "G4Geantino.hh"
+#include "G4ParticleDefinition.hh"
+#include "G4IonTable.hh"
+#include "G4Ions.hh"
+#include "G4TrackingManager.hh"
+#include "G4Track.hh"
+#include "G4SingleParticleSource.hh"
+
+G4SingleParticleSource::G4SingleParticleSource()
+{
+  // Initialise all variables
+  // Position distribution Variables
+
+  NumberOfParticlesToBeGenerated = 1;
+  particle_definition = G4Geantino::GeantinoDefinition();
+  G4ThreeVector zero;
+  particle_momentum_direction = G4ParticleMomentum(1,0,0);
+  particle_energy = 1.0*MeV;
+  particle_position = zero;
+  particle_time = 0.0;
+  particle_polarization = zero;
+  particle_charge = 0.0;
+  particle_weight = 1.0;
+
+  biasRndm = new G4SPSRandomGenerator();
+  posGenerator = new G4SPSPosDistribution();
+  posGenerator->SetBiasRndm(biasRndm);
+  angGenerator = new G4SPSAngDistribution();
+  angGenerator->SetPosDistribution(posGenerator);
+  angGenerator->SetBiasRndm(biasRndm);
+  eneGenerator = new G4SPSEneDistribution();
+  eneGenerator->SetBiasRndm(biasRndm);
+
+  // verbosity
+  verbosityLevel = 0;
+
+}
+
+G4SingleParticleSource::~G4SingleParticleSource()
+{}
+
+void G4SingleParticleSource::SetVerbosity(int vL)
+{
+  verbosityLevel = vL;
+  posGenerator->SetVerbosity(vL);
+  angGenerator->SetVerbosity(vL);
+  eneGenerator->SetVerbosity(vL);
+  G4cout << "Verbosity Set to: " << verbosityLevel << G4endl;
+}
+
+void G4SingleParticleSource::SetParticleDefinition
+  (G4ParticleDefinition* aParticleDefinition)
+{
+  particle_definition = aParticleDefinition;
+  particle_charge = particle_definition->GetPDGCharge();
+}
+
+void G4SingleParticleSource::GeneratePrimaryVertex(G4Event *evt)
+{
+  if(particle_definition==NULL) return;
+
+  // Position stuff
+  particle_position = posGenerator->GenerateOne();
+  // Angular stuff
+  particle_momentum_direction = angGenerator->GenerateOne();
+  // Energy stuff
+  particle_energy = eneGenerator->GenerateOne(particle_definition);
+
+  // create a new vertex
+  G4PrimaryVertex* vertex = new G4PrimaryVertex(particle_position,particle_time);
+
+  if(verbosityLevel >= 2)
+    G4cout << "Creating primaries and assigning to vertex" << G4endl;
+  // create new primaries and set them to the vertex
+  G4double mass =  particle_definition->GetPDGMass();
+  G4double energy = particle_energy + mass;
+  G4double pmom = sqrt(energy*energy-mass*mass);
+  G4double px = pmom*particle_momentum_direction.x();
+  G4double py = pmom*particle_momentum_direction.y();
+  G4double pz = pmom*particle_momentum_direction.z();
+
+  if(verbosityLevel > 1){
+    G4cout << "Particle name: "<<particle_definition->GetParticleName() << G4endl; 
+    G4cout << "       Energy: "<<particle_energy << G4endl;
+    G4cout << "     Position: "<<particle_position<< G4endl; 
+    G4cout << "    Direction: "<<particle_momentum_direction << G4endl;
+    G4cout << " NumberOfParticlesToBeGenerated: "<<NumberOfParticlesToBeGenerated << G4endl;
+  }
+  for( G4int i=0; i<NumberOfParticlesToBeGenerated; i++ )
+    {
+      G4PrimaryParticle* particle =
+	new G4PrimaryParticle(particle_definition,px,py,pz);
+      particle->SetMass( mass );
+      particle->SetCharge( particle_charge );
+      particle->SetPolarization(particle_polarization.x(),
+				particle_polarization.y(),
+				particle_polarization.z());
+      vertex->SetPrimary( particle );
+      
+      // Set bweight equal to the multiple of all non-zero weights
+      particle_weight = biasRndm->GetBiasWeight();
+      // now pass it to the primary vertex
+      vertex->SetWeight(particle_weight);
+    }
+  evt->AddPrimaryVertex( vertex );
+  if(verbosityLevel > 1)
+    G4cout << " Primary Vetex generated !"<< G4endl;   
+}
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