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#include <iostream>
#include <cmath>
#include <string>
#include "GeneratorInterface/ReggeGribovPartonMCInterface/interface/ReggeGribovPartonMCHadronizer.h"
#include "SimDataFormats/GeneratorProducts/interface/HepMCProduct.h"
#include "SimDataFormats/GeneratorProducts/interface/GenEventInfoProduct.h"
#include "SimDataFormats/GeneratorProducts/interface/GenRunInfoProduct.h"
#include "CLHEP/Random/RandomEngine.h"
#include <HepMC/GenCrossSection.h>
#include <HepMC/GenEvent.h>
#include <HepMC/GenVertex.h>
#include <HepMC/GenParticle.h>
#include <HepMC/HeavyIon.h>
#include <HepMC/PdfInfo.h>
#include <HepMC/Units.h>
#include "FWCore/Framework/interface/Event.h"
#include "FWCore/Framework/interface/Run.h"
#include "FWCore/MessageLogger/interface/MessageLogger.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "FWCore/Framework/interface/Frameworkfwd.h"
#include "FWCore/Framework/interface/Event.h"
#include "FWCore/Framework/interface/MakerMacros.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "SimDataFormats/GeneratorProducts/interface/HepMCProduct.h"
using namespace edm;
using namespace std;
using namespace gen;
#include "GeneratorInterface/ReggeGribovPartonMCInterface/interface/IO_EPOS.h"
#include "GeneratorInterface/ReggeGribovPartonMCInterface/interface/EPOS_Wrapper.h"
EPOS::IO_EPOS conv;
static CLHEP::HepRandomEngine* reggeGribovRandomEngine;
extern "C" {
float gen::rangen_() {
float a = float(reggeGribovRandomEngine->flat());
return a;
}
double gen::drangen_(int* idummy) {
double a = reggeGribovRandomEngine->flat();
return a;
}
}
ReggeGribovPartonMCHadronizer::ReggeGribovPartonMCHadronizer(const ParameterSet& pset)
: BaseHadronizer(pset),
pset_(pset),
m_BeamMomentum(pset.getParameter<double>("beammomentum")),
m_TargetMomentum(pset.getParameter<double>("targetmomentum")),
m_BeamID(pset.getParameter<int>("beamid")),
m_TargetID(pset.getParameter<int>("targetid")),
m_HEModel(pset.getParameter<int>("model")),
m_bMin(pset.getParameter<double>("bmin")),
m_bMax(pset.getParameter<double>("bmax")),
m_ParamFileName(pset.getUntrackedParameter<string>("paramFileName")),
m_SkipNuclFrag(pset.getParameter<bool>("skipNuclFrag")),
m_NEvent(0),
m_NParticles(0),
m_ImpactParameter(0.),
m_IsInitialized(false) {
int nevet = 1; //needed for CS
int noTables = 0; //don't calculate tables
int LHEoutput = 0; //no lhe
int dummySeed = 123;
char dummyName[] = "dummy";
crmc_set_f_(nevet,
dummySeed,
m_BeamMomentum,
m_TargetMomentum,
m_BeamID,
m_TargetID,
m_HEModel,
noTables,
LHEoutput,
dummyName,
m_ParamFileName.fullPath().c_str());
//additionally initialise tables
initializeTablePaths();
//change impact paramter
nucl2_.bminim = float(m_bMin);
nucl2_.bmaxim = float(m_bMax);
}
//_____________________________________________________________________
ReggeGribovPartonMCHadronizer::~ReggeGribovPartonMCHadronizer() {
// destructor
}
//_____________________________________________________________________
void ReggeGribovPartonMCHadronizer::doSetRandomEngine(CLHEP::HepRandomEngine* v) { reggeGribovRandomEngine = v; }
//_____________________________________________________________________
bool ReggeGribovPartonMCHadronizer::generatePartonsAndHadronize() {
int iout = 0, ievent = 0;
crmc_f_(iout,
ievent,
m_NParticles,
m_ImpactParameter,
m_PartID[0],
m_PartPx[0],
m_PartPy[0],
m_PartPz[0],
m_PartEnergy[0],
m_PartMass[0],
m_PartStatus[0]);
LogDebug("ReggeGribovPartonMCInterface") << "event generated" << endl;
const bool isHeavyIon = (m_TargetID + m_BeamID > 2);
if (isHeavyIon)
conv.set_trust_beam_particles(false);
conv.set_skip_nuclear_fragments(m_SkipNuclFrag);
HepMC::GenEvent* evt = conv.read_next_event();
evt->set_event_number(m_NEvent++);
int sig_id = -1;
switch (int(c2evt_.typevt)) // if negative typevt mini plasma was created by event (except -4)
{
case 0:
break; //unknown for qgsjetII
case 1:
sig_id = 101;
break;
case -1:
sig_id = 101;
break;
case 2:
sig_id = 105;
break;
case -2:
sig_id = 105;
break;
case 3:
sig_id = 102;
break;
case -3:
sig_id = 102;
break;
case 4:
sig_id = 103;
break;
case -4:
sig_id = 104;
break;
default:
LogDebug("ReggeGribovPartonMCInterface") << "Signal ID not recognised for setting HEPEVT" << endl;
}
evt->set_signal_process_id(sig_id); //an integer ID uniquely specifying the signal process (i.e. MSUB in Pythia)
#ifdef HEPMC_HAS_CROSS_SECTION
// set cross section information for this event
HepMC::GenCrossSection theCrossSection;
theCrossSection.set_cross_section(double(hadr5_.sigineaa) * 1e9); //required in pB
evt->set_cross_section(theCrossSection);
#endif
if (isHeavyIon) //other than pp
{
HepMC::HeavyIon ion(cevt_.kohevt, // Number of hard scatterings
cevt_.npjevt, // Number of projectile participants
cevt_.ntgevt, // Number of target participants
cevt_.kolevt, // Number of NN (nucleon-nucleon) collisions
cevt_.npnevt + cevt_.ntnevt, // Number of spectator neutrons
cevt_.nppevt + cevt_.ntpevt, // Number of spectator protons
-1, // Number of N-Nwounded collisions
-1, // Number of Nwounded-N collisons
-1, // Number of Nwounded-Nwounded collisions
cevt_.bimevt, // Impact Parameter(fm) of collision
cevt_.phievt, // Azimuthal angle of event plane
c2evt_.fglevt, // eccentricity of participating nucleons
hadr5_.sigine * 1e9); // nucleon-nucleon inelastic (in pB)
evt->set_heavy_ion(ion);
}
event().reset(evt);
//evt->print();
//EPOS::EPOS_Wrapper::print_hepcom();
return true;
}
//_____________________________________________________________________
bool ReggeGribovPartonMCHadronizer::hadronize() { return false; }
bool ReggeGribovPartonMCHadronizer::decay() { return true; }
bool ReggeGribovPartonMCHadronizer::residualDecay() { return true; }
void ReggeGribovPartonMCHadronizer::finalizeEvent() { return; }
void ReggeGribovPartonMCHadronizer::statistics() { return; }
const char* ReggeGribovPartonMCHadronizer::classname() const { return "gen::ReggeGribovPartonMCHadronizer"; }
bool ReggeGribovPartonMCHadronizer::declareStableParticles(const std::vector<int>&) { return true; }
bool ReggeGribovPartonMCHadronizer::initializeForInternalPartons() {
if (!m_IsInitialized) {
//use set parameters to init models
crmc_init_f_();
m_IsInitialized = true;
}
return true;
}
bool ReggeGribovPartonMCHadronizer::initializeTablePaths() {
//epos
string path_fnii(FileInPath("GeneratorInterface/ReggeGribovPartonMCInterface/data/epos.initl").fullPath());
string path_fnie(FileInPath("GeneratorInterface/ReggeGribovPartonMCInterface/data/epos.iniev").fullPath());
string path_fnrj(FileInPath("GeneratorInterface/ReggeGribovPartonMCInterface/data/epos.inirj").fullPath());
string path_fncs(FileInPath("GeneratorInterface/ReggeGribovPartonMCInterface/data/epos.inics").fullPath());
if (path_fnii.length() >= 500)
LogError("ReggeGribovPartonMCInterface") << "table path too long" << endl;
else
nfname_.nfnii = path_fnii.length();
if (path_fnie.length() >= 500)
LogError("ReggeGribovPartonMCInterface") << "table path too long" << endl;
else
nfname_.nfnie = path_fnie.length();
if (path_fnrj.length() >= 500)
LogError("ReggeGribovPartonMCInterface") << "table path too long" << endl;
else
nfname_.nfnrj = path_fnrj.length();
if (path_fncs.length() >= 500)
LogError("ReggeGribovPartonMCInterface") << "table path too long" << endl;
else
nfname_.nfncs = path_fncs.length();
strcpy(fname_.fnii, path_fnii.c_str());
strcpy(fname_.fnie, path_fnie.c_str());
strcpy(fname_.fnrj, path_fnrj.c_str());
strcpy(fname_.fncs, path_fncs.c_str());
//qgsjet
string path_fndat(FileInPath("GeneratorInterface/ReggeGribovPartonMCInterface/data/qgsjet.dat").fullPath());
string path_fnncs(FileInPath("GeneratorInterface/ReggeGribovPartonMCInterface/data/qgsjet.ncs").fullPath());
if (path_fndat.length() >= 500)
LogError("ReggeGribovPartonMCInterface") << "table path too long" << endl;
else
qgsnfname_.nfndat = path_fndat.length();
if (path_fnncs.length() >= 500)
LogError("ReggeGribovPartonMCInterface") << "table path too long" << endl;
else
qgsnfname_.nfnncs = path_fnncs.length();
strcpy(qgsfname_.fndat, path_fndat.c_str());
strcpy(qgsfname_.fnncs, path_fnncs.c_str());
qgsfname_.ifdat = 1; //option to overwrite the normal path
qgsfname_.ifncs = 2;
//qgsjetII
string path_fniidat(FileInPath("GeneratorInterface/ReggeGribovPartonMCInterface/data/qgsdat-II-04.lzma").fullPath());
string path_fniincs(FileInPath("GeneratorInterface/ReggeGribovPartonMCInterface/data/sectnu-II-04").fullPath());
if (path_fniidat.length() >= 500)
LogError("ReggeGribovPartonMCInterface") << "table path too long" << endl;
else
qgsiinfname_.nfniidat = path_fniidat.length();
if (path_fniincs.length() >= 500)
LogError("ReggeGribovPartonMCInterface") << "table path too long" << endl;
else
qgsiinfname_.nfniincs = path_fniincs.length();
strcpy(qgsiifname_.fniidat, path_fniidat.c_str());
strcpy(qgsiifname_.fniincs, path_fniincs.c_str());
qgsiifname_.ifiidat = 1; //option to overwrite the normal path
qgsiifname_.ifiincs = 2;
return true;
}
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