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//
// Authors: Tomohiko Tanabe <tomohiko@icepp.s.u-tokyo.ac.jp>
// Taikan Suehara <suehara@icepp.s.u-tokyo.ac.jp>
// Proted from Mokka by A.Sailer (CERN )
//
// $Id$
// $Name: $
#include "Geant4ExtraParticles.h"
#include "DDG4/Geant4PhysicsConstructor.h"
#include "DDG4/Geant4Kernel.h"
#include "DDG4/Factories.h"
#include "G4ParticleTable.hh"
#include "G4ParticleDefinition.hh"
#include "G4SystemOfUnits.hh"
#include "G4PhysicalConstants.hh"
#include "G4Version.hh"
#include "DDG4/Factories.h"
#include <fstream>
#include <sstream>
#include <string>
using namespace DD4hep::Simulation;
Geant4ExtraParticles::Geant4ExtraParticles(Geant4Context* ctxt, const std::string& nam)
: Geant4PhysicsConstructor(ctxt, nam), m_decay(0), m_ionise(0), m_scatter(0)
{
declareProperty("pdgfile", m_pdgfile);
}
Geant4ExtraParticles::~Geant4ExtraParticles() {
deletePtr(m_decay);
deletePtr(m_ionise);
deletePtr(m_scatter);
}
// bool Geant4ExtraParticles::FileExists() {
// std::ifstream pdgFile( m_pdgfile.c_str(), std::ifstream::in );
// return pdgFile.is_open();
// }
void Geant4ExtraParticles::constructParticle(Constructor& ) {
info("pdgfile: %s",m_pdgfile.c_str());
G4ParticleTable *theParticleTable = G4ParticleTable::GetParticleTable();
std::ifstream pdgFile( m_pdgfile.c_str(), std::ifstream::in );
if (!pdgFile.is_open()) {
except("Could not open pdgfile: %s",m_pdgfile.c_str());
info("opened pdgfile: %s",m_pdgfile.c_str());
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while ( !pdgFile.eof() ) {
// read line
std::string linebuf;
getline( pdgFile, linebuf );
// ignore comments
if (linebuf.substr(0,1) == "#") continue;
if (linebuf.substr(0,2) == "//") continue;
// ignore empty lines
if (linebuf.empty()) continue;
// parse line
int pdg;
std::string nam;
double charge;
double mass;
double width;
double lifetime;
std::istringstream istr(linebuf);
istr >> pdg >> nam >> charge >> mass >> width >> lifetime;
// do add particles that don't fly
// if (lifetime == 0) continue;
if(width<0) width = 0;
// normalize to G4 units
mass *= GeV;
if (charge != 0) {
charge /= 3.;
}
if (lifetime > 0) {
lifetime = lifetime*mm/c_light;
}
if (width == 0 && lifetime > 0) {
width = hbar_Planck/lifetime;
}
// don't add if the particle already exists
G4ParticleDefinition* p = theParticleTable->FindParticle(pdg);
if ( !p ) {
if (abs(pdg)>80 && abs(pdg)<=100) {
// don't add generator-specific particles
} else {
/*
if (pdg==5122) {
G4cout << "Lambda_b0: " << "PDG=" << pdg << ", name=" << name << ", chrg=" << charge
<< ", mass=" << mass << ", width=" << width << ", lifetime=" << lifetime << "\n";
G4cout << "debug: mass=" << 5.62 << ", width =" << 1.39e-12/6.582e-16 << ", lifetime=" << 1.39e-12 << "\n";
}
//*/
p = new G4ParticleDefinition(
nam, // name
mass, // mass
width, // width
charge, // charge
0, // 2*spin
0, // parity
0, // C-conjugation
0, // 2*isospin
0, // 2*isospin3
0, // G-parity
"extra", // type
0, // lepton number
0, // baryon number
pdg, // PDG encoding
width==0?true:false, // stable
lifetime, // lifetime
NULL, // decay table
false); // short lived
}
}
}
G4cout << "Loaded extra particles using file: " << m_pdgfile << G4endl;
}
void Geant4ExtraParticles::constructProcess(Constructor& ctor) {
G4ParticleTable::G4PTblDicIterator* ParticleIterator = ctor.particleIterator();
#if G4VERSION_NUMBER < 940
if ( 0 == _scatter ) _scatter=new G4hMultipleScattering();
if ( 0 == _ionise ) _ionise=new G4hIonisation()
if ( 0 == _decay ) _decay=new G4Decay()
#endif
while((*ParticleIterator)()) {
G4ParticleDefinition* pdef = ParticleIterator->value();
G4ProcessManager* pmgr = pdef->GetProcessManager();
if (pdef->GetParticleType() == "extra") {
if (pdef->GetPDGCharge() != 0) {
#if G4VERSION_NUMBER < 940
pmgr->AddProcess(_scatter, -1, 1, 1); // multiple scattering
pmgr->AddProcess(_ionise, -1, 2, 2); // ionisation
pmgr->AddProcess(_decay, -1, -1, 2); // decay
#else
pmgr->AddProcess(new G4hMultipleScattering(), -1, 1, 1); //multiple scattering
pmgr->AddProcess(new G4hIonisation(), -1, 2, 2); // ionisation
pmgr->AddProcess(new G4Decay(), -1, -1, 2); // decay
#endif
} else {
#if G4VERSION_NUMBER < 940
pmgr->AddProcess(_scatter=new G4hMultipleScattering(), -1, 1, 1); // multiple scattering
pmgr->AddProcess(_decay=new G4Decay(), -1, -1, 2); // decay