Gabriele Cosmo
77 lines
2.8 KiB
C++
77 lines
2.8 KiB
C++
//
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// ********************************************************************
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// * DISCLAIMER *
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// * *
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// * The following disclaimer summarizes all the specific disclaimers *
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// * of contributors to this software. The specific disclaimers,which *
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// * govern, are listed with their locations in: *
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// * http://cern.ch/geant4/license *
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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. *
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// * *
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// * This code implementation is the intellectual property of the *
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// * GEANT4 collaboration. *
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// * By copying, distributing or modifying the Program (or any work *
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// * based on the Program) you indicate your acceptance of this *
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// * statement, and all its terms. *
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// ********************************************************************
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//
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//
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// $Id: G4RayShooter.cc,v 1.2 2001/07/11 10:09:04 gunter Exp $
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// GEANT4 tag $Name: geant4-04-00 $
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//
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#include "G4RayShooter.hh"
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#include "G4PrimaryParticle.hh"
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#include "G4Event.hh"
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#include "G4Geantino.hh"
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G4RayShooter::G4RayShooter()
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{
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SetInitialValues();
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}
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void G4RayShooter::SetInitialValues()
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{
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particle_definition = G4Geantino::GeantinoDefinition();
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G4ThreeVector zero;
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particle_momentum_direction = (G4ParticleMomentum)zero;
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particle_energy = 1.0*GeV;
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particle_position = zero;
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particle_time = 0.0;
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particle_polarization = zero;
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}
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G4RayShooter::~G4RayShooter()
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{
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}
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void G4RayShooter::Shoot(G4Event* evt,G4ThreeVector vtx,G4ThreeVector direc)
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{
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// create a new vertex
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G4PrimaryVertex* vertex = new G4PrimaryVertex(vtx,particle_time);
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// create new primaries and set them to the vertex
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G4double mass = particle_definition->GetPDGMass();
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G4double energy = particle_energy + mass;
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G4double pmom = sqrt(energy*energy-mass*mass);
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G4double px = pmom*direc.x();
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G4double py = pmom*direc.y();
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G4double pz = pmom*direc.z();
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G4PrimaryParticle* particle =
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new G4PrimaryParticle(particle_definition,px,py,pz);
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particle->SetMass( mass );
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particle->SetPolarization(particle_polarization.x(),
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particle_polarization.y(),
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particle_polarization.z());
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vertex->SetPrimary( particle );
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evt->AddPrimaryVertex( vertex );
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}
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