void GSMS::Source::generate_G4(G4GeneralParticleSource* dst, G4double dAngle) {
if (!dst) return;
for(int i=0; i<m_gamma.size(); i++) {
G4float ene = m_gamma[i].first;
G4float act = m_gamma[i].second;
dst->AddaSource(act);
dst->SetParticleDefinition(G4Gamma::Gamma());
G4SingleParticleSource* src = dst->GetCurrentSource();
src->GetEneDist()->SetMonoEnergy(ene);
src->GetAngDist()->SetAngDistType("iso");
src->GetPosDist()->SetPosDisType("Point");
src->GetEneDist()->SetEnergyDisType("Mono");
//src->GetPosDist()->SetCentreCoords(get_coords());
//src->GetPosDist()->SetCentreCoords(G4ThreeVector(1., 0., 0.));
src->GetPosDist()->SetCentreCoords(G4ThreeVector(m_x, m_y, m_z));
G4double basePhi = 0.0;
m_x != 0.0 ? basePhi = std::atan(m_y/m_x) :
m_y > 0 ? basePhi = pi/2 : basePhi = -pi/2;
if(m_x < 0.0 ) basePhi = -pi + basePhi;
std::cerr << "X: " << m_x << " Y: " << m_y << " Phi: " << basePhi << std::endl;
G4double dPhi = GSMS::get_hull().get_delta_phi(get_coords());
G4double baseTheta = pi/2;//TODO
G4double dTheta = GSMS::get_hull().get_delta_theta(get_coords());
std::cerr << "dPhi: " << dPhi*360/2/pi << "; dTheta" << dTheta*360/2/pi << std::endl;
//dPhi = 3*pi/2/180;//2*pi/2/180;
//dTheta = 16*pi/2/180;//6*pi/2/180;
src->GetAngDist()->SetMinPhi(basePhi - dPhi);
src->GetAngDist()->SetMaxPhi(basePhi + dPhi);
src->GetAngDist()->SetMinTheta(baseTheta - dTheta);
src->GetAngDist()->SetMaxTheta(baseTheta + dTheta);
std::cerr << ene << std::endl;
std::cerr << act << std::endl;
}
}
void Geant4ShowerGenerator::
generate_showers(unsigned num_events,
calin::simulation::tracker::ParticleType type,
double total_energy,
const Eigen::Vector3d& x0,
const Eigen::Vector3d& u0,
double weight)
{
G4GeneralParticleSource* gps = new G4GeneralParticleSource();
// default particle kinematic
G4ParticleTable* particle_table = G4ParticleTable::GetParticleTable();
G4ParticleDefinition* particle
= particle_table->FindParticle(particle_type_to_pdg_type(type));
if(total_energy * CLHEP::MeV < particle->GetPDGMass())
throw std::invalid_argument(
"Total energy must be larger than particle rest mass ("
+ std::to_string(particle->GetPDGMass()/CLHEP::MeV) + " MeV)");
G4ThreeVector position;
eigen_to_g4vec(position, x0, CLHEP::cm);
G4ThreeVector momentum_direction;
eigen_to_g4vec(momentum_direction, u0);
G4SingleParticleSource* sps = gps->GetCurrentSource();
sps->SetParticleDefinition(particle);
sps->GetPosDist()->SetPosDisType("Point");
sps->GetPosDist()->SetCentreCoords(position);
sps->GetAngDist()->SetAngDistType("planar");
sps->GetAngDist()->SetParticleMomentumDirection(momentum_direction);
sps->GetEneDist()->SetEnergyDisType("Mono");
sps->GetEneDist()->SetMonoEnergy(total_energy * CLHEP::MeV - particle->GetPDGMass());
gen_action_->setGPS(gps);
// start a run
run_manager_->BeamOn(num_events);
}