int main(int argc, char **argv)
{
TROOT root("pythia","run pythia");
// CONSTANT
if( argc < 3 ){
std::cout<<Form("usage : ./%s <output> <random_seed>",argv[0])<<std::endl;
exit(1);
}
char *outFile = argv[1];
Int_t random_seed = atoi(argv[2]);
TFile *fout = new TFile(outFile,"recreate");
// Generator.
Pythia pythia;
// Shorthand for some public members of pythia (also static ones).
Event& event = pythia.event;
//ParticleDataTable& pdt = pythia.particleData;
Info& info = pythia.info;
// Read in commands from external file.
pythia.readFile("main03.cmnd");
// Extract settings to be used in the main program.
int nEvent = pythia.mode("Main:numberOfEvents");
int nList = pythia.mode("Main:numberToList");
int nShow = pythia.mode("Main:timesToShow");
bool showCS = pythia.flag("Main:showChangedSettings");
//bool showCPD = pythia.flag("Main:showChangedParticleData");
pythia.readString(Form("Random:seed=%d",random_seed));
// Initialize. Beam parameters set in .cmnd file.
pythia.init();
// List changed data.
if (showCS) pythia.settings.listChanged();
//if (showCPD) pdt.listChanged();
// Book histograms.
TH1D *pThard = new TH1D("pThard","process pT scale", 100, 0., 200.); pThard->Sumw2();
TH1D *mult = new TH1D("mult","charged particle multiplicity", 100, -0.5, 799.5);mult->Sumw2();
TH1D *dndy = new TH1D("dndy","dn/dy for charged particles", 100, -10., 10.);dndy->Sumw2();
TH1D *dndpT_hadron = new TH1D("dndpT_hadron","dn/dpT for charged particles", 500, 0., 50.);dndpT_hadron->Sumw2();
TH1D *dndpT_pion = new TH1D("dndpT_pion","dn/dpT for pions", 500, 0., 50.);dndpT_pion->Sumw2();
TH1D *dndpT_kaon = new TH1D("dndpT_kaon","dn/dpT for kaons", 500, 0., 50.);dndpT_kaon->Sumw2();
TH1D *dndpT_proton = new TH1D("dndpT_proton","dn/dpT for protons", 500, 0., 50.);dndpT_proton->Sumw2();
TH1D *dndpT_antiproton = new TH1D("dndpT_antiproton","dn/dpT for antiprotons", 500, 0., 50.);dndpT_antiproton->Sumw2();
TH1D *dndpT_k0s = new TH1D("dndpT_k0s","dn/dpT for k0s", 500, 0., 50.);dndpT_k0s->Sumw2();
TH1D *dndpT_infly_hadron = new TH1D("dndpT_infly_hadron","dn/dpT for charged particles", 500, 0., 50.);dndpT_infly_hadron->Sumw2();
TH1D *dndpT_infly_pion = new TH1D("dndpT_infly_pion","dn/dpT for pions", 500, 0., 50.);dndpT_infly_pion->Sumw2();
TH1D *dndpT_infly_kaon = new TH1D("dndpT_infly_kaon","dn/dpT for kaons", 500, 0., 50.);dndpT_infly_kaon->Sumw2();
TH1D *dndpT_infly_proton = new TH1D("dndpT_infly_proton","dn/dpT for protons", 500, 0., 50.);dndpT_infly_proton->Sumw2();
TH1D *dndpT_infly_antiproton = new TH1D("dndpT_infly_antiproton","dn/dpT for antiprotons", 500, 0., 50.);dndpT_infly_antiproton->Sumw2();
TH1D *dndpT_hadron_mid = new TH1D("dndpT_hadron_mid","dn/dpT for charged particles |eta|<0.35", 500, 0., 50.);dndpT_hadron_mid->Sumw2();
TH1D *dndpT_pion_mid = new TH1D("dndpT_pion_mid","dn/dpT for pions |eta|<0.35", 500, 0., 50.);dndpT_pion_mid->Sumw2();
TH1D *dndpT_kaon_mid = new TH1D("dndpT_kaon_mid","dn/dpT for kaon |eta|<0.35", 500, 0., 50.);dndpT_kaon_mid->Sumw2();
TH1D *dndpT_proton_mid = new TH1D("dndpT_proton_mid","dn/dpT for proton |eta|<0.35", 500, 0., 50.);dndpT_proton_mid->Sumw2();
TH1D *dndpT_antiproton_mid = new TH1D("dndpT_antiproton_mid","dn/dpT for antiproton |eta|<0.35", 500, 0., 50.);dndpT_antiproton_mid->Sumw2();
TH1D *dndpT_infly_hadron_mid = new TH1D("dndpT_infly_hadron_mid","dn/dpT for charged particles |eta|<0.35", 500, 0., 50.);dndpT_infly_hadron_mid->Sumw2();
TH1D *dndpT_infly_pion_mid = new TH1D("dndpT_infly_pion_mid","dn/dpT for pions |eta|<0.35", 500, 0., 50.);dndpT_infly_pion_mid->Sumw2();
TH1D *dndpT_infly_kaon_mid = new TH1D("dndpT_infly_kaon_mid","dn/dpT for kaon |eta|<0.35", 500, 0., 50.);dndpT_infly_kaon_mid->Sumw2();
TH1D *dndpT_infly_proton_mid = new TH1D("dndpT_infly_proton_mid","dn/dpT for proton |eta|<0.35", 500, 0., 50.);dndpT_infly_proton_mid->Sumw2();
TH1D *dndpT_infly_antiproton_mid = new TH1D("dndpT_infly_antiproton_mid","dn/dpT for antiproton |eta|<0.35", 500, 0., 50.);dndpT_infly_antiproton_mid->Sumw2();
TH1D *dndpT_k0s_mid = new TH1D("dndpT_k0s_mid","dn/dpT for k0s |eta|<0.35", 500, 0., 50.);dndpT_k0s_mid->Sumw2();
TStopwatch timer;
timer.Start();
// Begin event loop.
int nPace = max(1, nEvent / max(1, nShow) );
for (int iEvent = 0; iEvent < nEvent; ++iEvent) {
if (nShow > 0 && iEvent%nPace == 0)
cout << " Now begin event " << iEvent << endl;
// Generate events. Quit if failure.
if (!pythia.next()) {
cout << " Event generation aborted prematurely, owing to error!\n";
break;
}
// List first few events, both info, hard process and complete events.
if (iEvent < nList) {
info.list();
pythia.process.list();
event.list();
}
// Fill hard scale of event.
pThard->Fill( info. pTHat() );
// Loop over final charged particles in the event.
int nCharged = 0;
for (int i = 0; i < event.size(); ++i) {
// for k0s
if (event[i].id()==310 ) dndpT_k0s->Fill(event[i].pT());
if(event[i].eta()>-0.35&&event[i].eta()<0.35) {
if (event[i].id()==310 ) dndpT_k0s_mid->Fill(event[i].pT());
}
// Infly decay
dndpT_infly_hadron->Fill( event[i].pT() );
if (event[i].id()==211 || event[i].id()==-211 ) dndpT_infly_pion->Fill(event[i].pT());
if (event[i].id()==321 || event[i].id()==-321 ) dndpT_infly_kaon->Fill(event[i].pT());
if (event[i].id()==2212) dndpT_infly_proton->Fill(event[i].pT());
if (event[i].id()==-2212 ) dndpT_infly_antiproton->Fill(event[i].pT());
if(event[i].eta()>-0.35&&event[i].eta()<0.35) {
dndpT_infly_hadron_mid->Fill( event[i].pT() );
if (event[i].id()==211 || event[i].id()==-211 ) dndpT_infly_pion_mid->Fill(event[i].pT());
if (event[i].id()==321 || event[i].id()==-321 ) dndpT_infly_kaon_mid->Fill(event[i].pT());
if (event[i].id()==2212) dndpT_infly_proton_mid->Fill(event[i].pT());
if (event[i].id()==-2212) dndpT_infly_antiproton_mid->Fill(event[i].pT());
}
// hadron in final state
if (event[i].isFinal()&&event[i].isCharged()) {
dndpT_hadron->Fill( event[i].pT() );
if (event[i].id()==211 || event[i].id()==-211 ) dndpT_pion->Fill(event[i].pT());
if (event[i].id()==321 || event[i].id()==-321 ) dndpT_kaon->Fill(event[i].pT());
if (event[i].id()==2212) dndpT_proton->Fill(event[i].pT());
if (event[i].id()==-2212 ) dndpT_antiproton->Fill(event[i].pT());
}
if(event[i].isFinal()&&event[i].isCharged()&&event[i].eta()>-0.35&&event[i].eta()<0.35) {
dndpT_hadron_mid->Fill( event[i].pT() );
if (event[i].id()==211 || event[i].id()==-211 ) dndpT_pion_mid->Fill(event[i].pT());
if (event[i].id()==321 || event[i].id()==-321 ) dndpT_kaon_mid->Fill(event[i].pT());
if (event[i].id()==2212) dndpT_proton_mid->Fill(event[i].pT());
if (event[i].id()==-2212) dndpT_antiproton_mid->Fill(event[i].pT());
}
// Analyze charged particles and fill histograms.
if(event[i].isFinal()&&event[i].isCharged()) {
++nCharged;
dndy->Fill( event[i].y() );
}
// End of particle and event loops. Fill charged multiplicity.
}
mult->Fill( nCharged );
}
// Final statistics. Normalize and output histograms.
pythia.statistics();
timer.Stop(); timer.Print();
fout->cd();
pThard->Write();
mult->Write();
dndy->Write();
dndpT_hadron->Write();
dndpT_pion->Write();
dndpT_kaon->Write();
dndpT_proton->Write();
dndpT_antiproton->Write();
dndpT_infly_hadron->Write();
dndpT_infly_pion->Write();
dndpT_infly_kaon->Write();
dndpT_infly_proton->Write();
dndpT_infly_antiproton->Write();
dndpT_k0s->Write();
dndpT_hadron_mid->Write();
dndpT_pion_mid->Write();
dndpT_kaon_mid->Write();
dndpT_proton_mid->Write();
dndpT_antiproton_mid->Write();
dndpT_infly_hadron_mid->Write();
dndpT_infly_pion_mid->Write();
dndpT_infly_kaon_mid->Write();
dndpT_infly_proton_mid->Write();
dndpT_infly_antiproton_mid->Write();
dndpT_k0s_mid->Write();
fout->Write();
fout->Close();
// Done.
return 0;
}
int main(int argc, char* argv[]) {
char tune[25];
char seed[25];
//tune = "5";
//seed = "1370";
strncpy(tune,"5",25);
strncpy(seed,"1370",25);
//TODO this has gotten big enough to require real command line
//options, setup and option parser and do it right. Someone's going
//to get headaches over this very soon
//TODO add seeds back as an option, required for running on condor!
if(argc < 3)
{
cerr<<"Usage: "<<argv[0]<<" [config file] [out file] [conf lines ...]"<<endl;
return 1;
}
ifstream is(argv[1]);
if (!is) {
cerr << " Command-line file " << argv[1] << " was not found. \n"
<< " Program stopped! " << endl;
return 1;
}
cout<<"Configuring PYTHIA from "<<argv[1]<<endl;
cout<<"Writing output to "<<argv[2]<<endl;
vector<std::string> commandStrings;
for(int i=3; i < argc; i++){
commandStrings.push_back(string(argv[i]));
cout <<" Got Pythia command: "<<commandStrings.back()<<endl;
}
cout <<"Warning, command line arguments aren't type-checked, don't be stupid." <<endl;
HepMC::Pythia8ToHepMC ToHepMC;
HepMC::IO_GenEvent ascii_io(argv[2], std::ios::out);
char processline[128];
Pythia pythia;
pythia.readFile(argv[1]);
int nRequested = 100;
nRequested = pythia.mode("Main:numberOfEvents");
int nAbort = pythia.mode("Main:timesAllowErrors");
// Set the seed
pythia.readString("Random:setSeed = on");
sprintf(processline,"Random:seed = %s",seed);
pythia.readString(processline);
// Set the tune
sprintf(processline,"Tune:pp = %s",tune);
pythia.readString(processline);
for(std::vector<std::string>::const_iterator cmd = commandStrings.begin(); cmd != commandStrings.end(); ++cmd){
pythia.readString(*cmd);
}
pythia.init();
int iAbort = 0;
int nGenerated=0;
std::vector<int> requestedPdgId;//(3,0);
int pid=0;
bool keep=false;
while(nGenerated < nRequested) {
pid=0;
keep=false;
// requestedPdgId.clear();
if (!pythia.next()) {
if (pythia.info.atEndOfFile()) {
cout << " Aborted since reached end of Les Houches Event File\n";
break;
}
if (++iAbort < nAbort) continue;
cout << " Event generation aborted prematurely, owing to error!\n";
break;
}
for(int i=0; i < pythia.event.size(); i++){
pid=abs(pythia.event[i].id());
if(pid == 443 || // J\psi
pid == 10441 || //Chi_0
pid == 20443 || //Chi_1
pid == 445 || //Chi_2
pid == 100443
/*pid ==13 */){
keep=true;
break;
}
}
if(!keep){
continue;
}
HepMC::GenEvent* hepmcevt = new HepMC::GenEvent(HepMC::Units::GEV, HepMC::Units::MM);
ToHepMC.fill_next_event( pythia, hepmcevt );
ascii_io << hepmcevt ;
delete hepmcevt;
nGenerated++;
}
pythia.stat();
return 0;
}
int main(int argc, char **argv) {
//initial arguments
int seed = -1;
char seedString[32];
char inputFile[1000];
char outputFile[1000];
sprintf(inputFile, "pythia_inclusive.cmnd");
sprintf(outputFile, "pythiatree.root");
for (int i = 1; i < argc; i=i+2){
if(!strcmp(argv[i], "-t"))
strcpy(inputFile, argv[i + 1]);
if(!strcmp(argv[i], "-s"))
seed = atoi(argv[i+1]);
if(!strcmp(argv[i], "-o"))
strcpy(outputFile, argv[i + 1]);
}
// Generator.
Pythia pythia;
// Shorthand for the event record in pythia.
Event& event = pythia.event;
// Read in commands from external file.
pythia.readString("Random:setSeed = on");
sprintf(seedString, "Random:seed = %d", seed);
pythia.readString(seedString);
pythia.readFile(inputFile);
// Extract settings to be used in the main program.
int nEvent = pythia.mode("Main:numberOfEvents");
int nAbort = pythia.mode("Main:timesAllowErrors");
// Initialize.
pythia.init();
// Book histograms.
TH1F *Hdummy = new TH1F("dummy histo", "dummy histo",10, 0, 1);
TVector3 *getMomentum = new TVector3();
TVector3 *getPosition = new TVector3();
int eventID = 0;
int nParticles;
int particleID[10000];
int parentID[10000];
TClonesArray *fMomentum = new TClonesArray("TVector3");
fMomentum -> BypassStreamer();
TClonesArray& Momentum = *fMomentum;
TClonesArray *fPosition = new TClonesArray("TVector3");
fPosition -> BypassStreamer();
TClonesArray& Position = *fPosition;
//Make TTree
TTree *pythiatree = new TTree("save", "save");
pythiatree -> Branch("eventID", &eventID, "eventID/I");
pythiatree -> Branch("n", &nParticles, "n/I");
pythiatree -> Branch("pdg", particleID, "pdg[n]/I");
pythiatree -> Branch("parent", parentID, "parent[n]/I");
pythiatree -> Branch("pos", &fPosition, 256000, 99);
pythiatree -> Branch("mom", &fMomentum, 256000, 99);
// Begin event loop.
int iAbort = 0;
int nMuons = 0;
int nPions = 0;
int nKaons = 0;
for (int iEvent = 0; iEvent < nEvent; ++iEvent) {
// Generate events. Quit if many failures.
if (!pythia.next()) {
if (++iAbort < nAbort) continue;
cout << " Event generation aborted prematurely, owing to error!\n";
break;
}
// Loop over final particles in the event.
for (int i = 0; i < event.size(); ++i){
//if (event[i].id() == 2212) {
//cout << iEvent << " We got a proton! Energy: " << event[i].e() << " zProd: " << event[i].zDec()/1000 << " Mother1: " << event[event[i].mother1()].id() << endl;
//}
if(event[i].e() > minEnergy){
if (abs(event[i].id()) == 13) {
if(event[i].zProd()/1000 < minZvtxDecay){
nMuons++;
//cout << iEvent << " We got a muon! Energy: " << event[i].e() << " zProd: " << event[i].zProd()/1000 << " Mother1: " << event[event[i].mother1()].id() << endl;
getMomentum -> SetXYZ(event[i].px(), event[i].py(), event[i].pz());
getPosition -> SetXYZ(event[i].xProd()*cm, event[i].yProd()*cm, event[i].zProd()*cm);
nParticles++;
particleID[nParticles-1] = event[i].id();
parentID[nParticles-1] = event[event[i].mother1()].id();
new(Momentum[nParticles-1]) TVector3(*getMomentum);
new(Position[nParticles-1]) TVector3(*getPosition);
//pythiatree -> Fill();
}
}
/*
if (abs(event[i].id()) == 211){
if(event[i].zProd()/1000 < minZvtxDecay && event[i].zDec()/1000 > minZvtxDecay){
//if(event[i].zDec()/1000 > minZvtxDecay){
nPions++;
//cout << iEvent << " We got a pion! Energy: " << event[i].e() << " zDec: " << event[i].zDec()/1000 << " zDec: " << event[i].zDec()/1000 << " Mother1: " << event[event[i].mother1()].id() << endl;
getMomentum -> SetXYZ(event[i].px(), event[i].py(), event[i].pz());
getPosition -> SetXYZ(event[i].xProd()*cm, event[i].yProd()*cm, event[i].zProd()*cm);
nParticles++;
particleID[nParticles-1] = event[i].id();
parentID[nParticles-1] = event[event[i].mother1()].id();
new(Momentum[nParticles-1]) TVector3(*getMomentum);
new(Position[nParticles-1]) TVector3(*getPosition);
//pythiatree -> Fill();
}
}
if (abs(event[i].id()) == 321){
if(event[i].zProd()/1000 < minZvtxDecay && event[i].zDec()/1000 > minZvtxDecay){
//if(event[i].zDec()/1000 > minZvtxDecay){
nKaons++;
//cout << iEvent << " We got a kaon! Energy: " << event[i].e() << " zDec: " << event[i].zDec()/1000 << " Mother1: " << event[event[i].mother1()].id() << endl;
getMomentum -> SetXYZ(event[i].px(), event[i].py(), event[i].pz());
getPosition -> SetXYZ(event[i].xProd()*cm, event[i].yProd()*cm, event[i].zProd()*cm);
nParticles++;
particleID[nParticles-1] = event[i].id();
parentID[nParticles-1] = event[event[i].mother1()].id();
new(Momentum[nParticles-1]) TVector3(*getMomentum);
new(Position[nParticles-1]) TVector3(*getPosition);
//pythiatree -> Fill();
}
}
*/
}
}
//fill tree, reset counters
if(nParticles>0)pythiatree -> Fill();
eventID++;
nParticles = 0.;
fMomentum->Clear();
fPosition->Clear();
// End of event loop.
}
cout << "The total number of muons before dump is " << nMuons << endl;
cout << "The total number of pions is " << nPions << endl;
cout << "The total number of kaons is " << nKaons << endl;
// Final statistics. Normalize and output histograms.
pythia.stat();
// Create file on which histogram(s) can be saved.
TFile* outFile = new TFile(outputFile, "RECREATE");
// Save histogram on file and close file.
pythiatree -> Write();
outFile -> Close();
delete outFile;
delete pythiatree;
// Done.
return 0;
}
