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Index: trunk/examples/sartreMain.cpp
===================================================================
--- trunk/examples/sartreMain.cpp (revision 143)
+++ trunk/examples/sartreMain.cpp (revision 144)
@@ -1,243 +1,280 @@
//==============================================================================
// sartreMain.cpp
//
// Copyright (C) 2010-2013 Tobias Toll and Thomas Ullrich
//
// This file is part of Sartre version: 1.1
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation.
// This program is distributed in the hope that it will be useful,
// but without any warranty; without even the implied warranty of
// merchantability or fitness for a particular purpose. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
// Author: Thomas Ullrich
// Last update:
// $Date$
// $Author$
//==============================================================================
//
// Example main program. Use to get started.
//
//==============================================================================
#include <iostream>
#include <cmath>
#include "TTree.h"
#include "TFile.h"
#include "Sartre.h"
#include "TGenPhaseSpace.h"
#include "Settings.h"
#include "TH1D.h"
+#include "TROOT.h"
+#include "TLorentzVector.h"
+#include "TClonesArray.h"
#define PR(x) cout << #x << " = " << (x) << endl;
using namespace std;
struct rootSartreEvent {
double t;
double Q2;
double x;
double s;
double y;
double W;
double xpom;
int iEvent;
int pol; // 0=transverse or 1=longitudinal
int dmode; // 0=coherent, 1=Incoherent
};
rootSartreEvent myRootSartreEvent;
void randomlyReverseBeams(Event* myEvent){
TRandom3 *random = EventGeneratorSettings::randomGenerator();
if(random->Uniform(1) > 0.5){
for(unsigned int i=0; i<myEvent->particles.size(); i++)
myEvent->particles.at(i).p.RotateX(M_PI);
}
}
int main(int argc, char *argv[])
{
//
// Check command line arguments
//
if (! (argc == 2 || argc == 3) ) {
cout << "Usage: " << argv[0] << " runcard [rootfile]" << endl;
return 2;
}
string runcard = argv[1];
//
// Create the generator and initialize it.
// Once initialized you cannot (should not) change
// the settings w/o re-initialing sartre.
//
Sartre sartre;
bool ok = sartre.init(runcard);
if (!ok) {
cerr << "Initialization of sartre failed." << endl;
return 1;
}
EventGeneratorSettings* settings = sartre.runSettings();
settings->list();
//
// ROOT file
//
string rootfile;
if (argc == 3)
rootfile = argv[2];
else
rootfile = settings->rootfile();
TFile *hfile = 0;
if (rootfile.size()) {
hfile = new TFile(rootfile.c_str(),"RECREATE");
cout << "ROOT file is '" << rootfile.c_str() << "'." << endl;
}
-
+ // gROOT->ProcessLine("#pragma link C++ class std::vector<TLorentzVector*>+");
+ // gROOT->ProcessLine("#include <vector>");
//
// Setup ROOT tree for some basic debugging
//
+
TLorentzVector *eIn = new TLorentzVector;
TLorentzVector *pIn = new TLorentzVector;
TLorentzVector *vm = new TLorentzVector;
TLorentzVector *eOut = new TLorentzVector;
TLorentzVector *pOut = new TLorentzVector;
TLorentzVector *gamma = new TLorentzVector;
TLorentzVector *vmDaughter1 = new TLorentzVector;
TLorentzVector *vmDaughter2 = new TLorentzVector;
+ TClonesArray protons("TLorentzVector");
+ TClonesArray neutrons("TLorentzVector");
+ TClonesArray remnants("TLorentzVector");
+
TTree tree("tree","sartre");
tree.Branch("event", &myRootSartreEvent.t,
"t/D:Q2/D:x/D:s/D:y/D:W/D:xpom/D:iEvent/I:pol/I:dmode/I");
tree.Branch("eIn", "TLorentzVector", &eIn, 32000, 0);
tree.Branch("pIn", "TLorentzVector", &pIn, 32000, 0);
tree.Branch("vm", "TLorentzVector", &vm, 32000, 0);
tree.Branch("eOut", "TLorentzVector", &eOut, 32000, 0);
tree.Branch("pOut", "TLorentzVector", &pOut, 32000, 0);
tree.Branch("gamma","TLorentzVector", &gamma, 32000, 0);
tree.Branch("vmDaughter1", "TLorentzVector", &vmDaughter1, 32000, 0);
tree.Branch("vmDaughter2", "TLorentzVector", &vmDaughter2, 32000, 0);
+ if(settings->enableNuclearBreakup()){
+ tree.Branch("protons", &protons);
+ tree.Branch("neutrons", &neutrons);
+ tree.Branch("nuclearRemnants", &remnants);
+ }
//
// Prepare event generation
//
TGenPhaseSpace decay; // for VM decays
int daughterID = settings->userInt();
double daughterMasses[2] = {0, 0};
bool doPerformDecay = false;
if (daughterID && settings->vectorMesonId() != 22) {
doPerformDecay = true;
daughterMasses[0] = settings->lookupPDG(daughterID)->Mass();
daughterMasses[1] = settings->lookupPDG(-daughterID)->Mass();
cout << "Will decay vector meson: ";
cout << settings->lookupPDG(settings->vectorMesonId())->GetName();
cout << " -> ";
cout << settings->lookupPDG(daughterID)->GetName();
cout << " ";
cout << settings->lookupPDG(-daughterID)->GetName();
cout << endl;
}
int nPrint;
if (settings->timesToShow())
nPrint = settings->numberOfEvents()/settings->timesToShow();
else
nPrint = 0;
unsigned long maxEvents = settings->numberOfEvents();
cout << "Generating " << maxEvents << " events." << endl << endl;
//
// Event generation
//
for (unsigned long iEvent = 0; iEvent < maxEvents; iEvent++) {
//
// Generate one event
//
Event *event = sartre.generateEvent();
if (nPrint && (iEvent+1)%nPrint == 0 && iEvent != 0) {
cout << "processed " << iEvent+1 << " events" << endl;
}
//
// If Sartre is run in UPC mode, half of the events needs to be
// rotated around and axis perpendicular to z:
//
if(settings->UPC() and settings->A()==settings->UPCA()){
randomlyReverseBeams(event);
}
//
// Print out (here only for the first few events)
//
if (iEvent < 4) event->list();
//
// Fill ROOT tree
//
myRootSartreEvent.iEvent = event->eventNumber;
myRootSartreEvent.t = event->t;
myRootSartreEvent.Q2 = event->Q2;
myRootSartreEvent.x = event->x;
myRootSartreEvent.y = event->y;
myRootSartreEvent.s = event->s;
myRootSartreEvent.W = event->W;
myRootSartreEvent.xpom = event->xpom;
myRootSartreEvent.pol = event->polarization == transverse ? 0 : 1;
myRootSartreEvent.dmode = event->diffractiveMode == coherent ? 0 : 1;
eIn = &event->particles[0].p;
pIn = &event->particles[1].p;
eOut = &event->particles[2].p;
pOut = &event->particles[6].p;
vm = &event->particles[4].p;
gamma = &event->particles[3].p;
+ //If the event is incoherent, and nuclear breakup is enabled, fill the remnants to the tree
+ if(settings->enableNuclearBreakup() and event->diffractiveMode == incoherent){
+ protons.Clear();
+ neutrons.Clear();
+ remnants.Clear();
+ for(unsigned int iParticle=7; iParticle < event->particles.size(); iParticle++){
+ if(event->particles[iParticle].status == 1) { // Final-state particle
+ const Particle& particle = event->particles[iParticle];
+ switch (abs(particle.pdgId)) {
+ case 2212: // (Anti-)proton
+ new(protons[protons.GetEntries()]) TLorentzVector(particle.p);
+ break;
+ case 2112: // (Anti-)neutron
+ new(neutrons[neutrons.GetEntries()]) TLorentzVector(particle.p);
+ break;
+ default: // Any other remnant
+ new(remnants[remnants.GetEntries()]) TLorentzVector(particle.p);
+ break;
+ } // switch
+ } // if
+ } // for
+ } // if
+
//
// Decay the vector meson and fill the decay roducts in the tree:
//
if(doPerformDecay) {
if( decay.SetDecay(*vm, 2, daughterMasses) ){
double weight = decay.Generate(); // weight is always 1 here
if ( (weight-1) > FLT_EPSILON) {
cout << "sartreMain: Warning weight != 1, weight = " << weight << endl;
}
vmDaughter1 = decay.GetDecay(0);
vmDaughter2 = decay.GetDecay(1);
}
else {
cout << "sartreMain: Warning: Kinematics of Vector Meson does not allow decay!" << endl;
}
}
tree.Fill();
}
cout << "All events processed\n" << endl;
//
// That's it, finish up
//
double totalCS=sartre.totalCrossSection();
TH1D* histoForCSandNumberOfEvents = new TH1D("histoForCSandNumberOfEvents", "Cross-section and Number of Events", 2, 0., 1.);
histoForCSandNumberOfEvents->SetBinContent(1, totalCS);
histoForCSandNumberOfEvents->SetBinContent(2, maxEvents);
double runTime = sartre.runTime();
hfile->Write();
cout << rootfile.c_str() << " written." << endl;
cout << "Total cross-section: " << totalCS << " nb" << endl;
sartre.listStatus();
cout << "CPU Time/event: " << 1000*runTime/maxEvents << " msec/evt" << endl;
return 0;
}

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