[u/mrichter/AliRoot.git] / TDPMjet / AliGenDPMjet.cxx

/**************************************************************************
 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 *                                                                        *
 * Author: The ALICE Off-line Project.                                    *
 * Contributors are mentioned in the code where appropriate.              *
 *                                                                        *
 * Permission to use, copy, modify and distribute this software and its   *
 * documentation strictly for non-commercial purposes is hereby granted   *
 * without fee, provided that the above copyright notice appears in all   *
 * copies and that both the copyright notice and this permission notice   *
 * appear in the supporting documentation. The authors make no claims     *
 * about the suitability of this software for any purpose. It is          *
 * provided "as is" without express or implied warranty.                  *
 **************************************************************************/


// Generator using DPMJET as an external generator
// The main DPMJET options are accessable for the user through this interface.
// Uses the TDPMjet implementation of TGenerator.

#include <TDPMjet.h>
#include <TRandom.h>
#include <TArrayI.h>
#include <TParticle.h>
#include <TGraph.h>
#include <TDatabasePDG.h>
#include <TParticlePDG.h>
#include <TParticleClassPDG.h>
#include <TPDGCode.h>
#include <TLorentzVector.h>
#include <TClonesArray.h>
#include "AliRunLoader.h"
#include "AliGenDPMjet.h"
#include "AliGenDPMjetEventHeader.h"
#include "AliRun.h"
#include "AliDpmJetRndm.h"
#include "AliHeader.h"
#include "AliStack.h"
#include "AliMC.h"

ClassImp(AliGenDPMjet)

//______________________________________________________________________________
AliGenDPMjet::AliGenDPMjet()
    :AliGenMC(), 
     fBeamEn(2750.),
     fMinImpactParam(0.),
     fMaxImpactParam(5.),
     fICentr(0),
     fSelectAll(0),
     fFlavor(0),
     fTrials(0),
     fSpectators(1),
     fSpecn(0),
     fSpecp(0),
     fDPMjet(0),
     fNoGammas(0),
     fLHC(0),
     fPi0Decay(0),
     fDecayAll(0),
     fGenImpPar(0.),
     fProcess(kDpmMb)
{
// Constructor
    fEnergyCMS = 5500.;
    AliDpmJetRndm::SetDpmJetRandom(GetRandom());
}


//______________________________________________________________________________
AliGenDPMjet::AliGenDPMjet(Int_t npart)
    :AliGenMC(npart),
     fBeamEn(2750.),
     fMinImpactParam(0.),
     fMaxImpactParam(5.),
     fICentr(0),
     fSelectAll(0),
     fFlavor(0),
     fTrials(0),
     fSpectators(1),
     fSpecn(0),
     fSpecp(0),
     fDPMjet(0),
     fNoGammas(0),
     fLHC(0),
     fPi0Decay(0),
     fDecayAll(0),
     fGenImpPar(0.),
     fProcess(kDpmMb)
{
// Default PbPb collisions at 5. 5 TeV
//
    fEnergyCMS = 5500.;
    fName = "DPMJET";
    fTitle= "Particle Generator using DPMJET";
    SetTarget();
    SetProjectile();
    fVertex.Set(3);
    AliDpmJetRndm::SetDpmJetRandom(GetRandom());
}

AliGenDPMjet::AliGenDPMjet(const AliGenDPMjet &/*Dpmjet*/)
    :AliGenMC(),
     fBeamEn(2750.),
     fMinImpactParam(0.),
     fMaxImpactParam(5.),
     fICentr(0),
     fSelectAll(0),
     fFlavor(0),
     fTrials(0),
     fSpectators(1),
     fSpecn(0),
     fSpecp(0),
     fDPMjet(0),
     fNoGammas(0),
     fLHC(0),
     fPi0Decay(0),
     fDecayAll(0),
     fGenImpPar(0.),
     fProcess(kDpmMb)
{
    // Dummy copy constructor
    fEnergyCMS = 5500.;
}

//______________________________________________________________________________
AliGenDPMjet::~AliGenDPMjet()
{
// Destructor
}
//______________________________________________________________________________
void AliGenDPMjet::Init()
{
// Initialization
    
    SetMC(new TDPMjet(fProcess, fAProjectile, fZProjectile, fATarget, fZTarget, 
		      fBeamEn,fEnergyCMS));

    fDPMjet=(TDPMjet*) fMCEvGen;
    //
    // **** Flag to force central production
    // fICentr=1. central production forced 
    // fICentr<0 && fICentr>-100 -> bmin = fMinImpactParam, bmax = fMaxImpactParam	  
    // fICentr<-99 -> fraction of x-sec. = XSFRAC		  
    // fICentr=-1. -> evaporation/fzc suppressed		  
    // fICentr<-1. -> evaporation/fzc suppressed		  
    if (fAProjectile == 1 && TMath::Abs(fZProjectile == 1)) fDPMjet->SetfIdp(1);
    
    fDPMjet->SetfFCentr(fICentr);  
    fDPMjet->SetbRange(fMinImpactParam, fMaxImpactParam); 
    fDPMjet->SetPi0Decay(fPi0Decay);
    fDPMjet->SetDecayAll(fDecayAll);
//
//  Initialize DPMjet  
//    
    fDPMjet->Initialize();
}


//______________________________________________________________________________
void AliGenDPMjet::Generate()
{
// Generate one event

  Float_t polar[3]    =   {0,0,0};
  Float_t origin[3]   =   {0,0,0};
  Float_t p[3];
  Float_t tof;

//  converts from mm/c to s
  const Float_t kconv = 0.001/2.999792458e8;
  Int_t nt  = 0;
  Int_t jev = 0;
  Int_t kf, ks, imo;
  kf = 0;
  fTrials = 0;
  //  Set collision vertex position 
  if (fVertexSmear == kPerEvent) Vertex();
  
  while(1)
  {
//    Generate one event
// --------------------------------------------------------------------------
      fSpecn = 0;  
      fSpecp = 0;
// --------------------------------------------------------------------------
      fDPMjet->GenerateEvent();
      fTrials++;

      fDPMjet->ImportParticles(&fParticles,"All");      
      if (fLHC) Boost();

      // Temporaneo
      fGenImpPar = fDPMjet->GetBImpac();
      
      Int_t np = fParticles.GetEntriesFast();
      printf("\n **************************************************%d\n",np);
      Int_t nc=0;
      if (np==0) continue;
      Int_t i;
      Int_t* newPos     = new Int_t[np];
      Int_t* pSelected  = new Int_t[np];

      for (i = 0; i<np; i++) {
	  newPos[i]    = i;
	  pSelected[i] = 0;
      }
      
//      First select parent particles

      for (i = 0; i<np; i++) {
	  TParticle *iparticle = (TParticle *) fParticles.At(i);

// Is this a parent particle ?

	  if (Stable(iparticle)) continue;

	  Bool_t  selected             =  kTRUE;
	  Bool_t  hasSelectedDaughters =  kFALSE;
	  
	  kf = iparticle->GetPdgCode();
	  if (kf == 92 || kf == 99999) continue;
	  ks = iparticle->GetStatusCode();
// No initial state partons
          if (ks==21) continue;
	    
	  if (!fSelectAll) selected = KinematicSelection(iparticle, 0) && 
			       SelectFlavor(kf);
	  hasSelectedDaughters = DaughtersSelection(iparticle);

// Put particle on the stack if it is either selected or 
// it is the mother of at least one seleted particle

	  if (selected || hasSelectedDaughters) {
	      nc++;
	      pSelected[i] = 1;
	  } // selected
      } // particle loop parents

// Now select the final state particles


      for (i=0; i<np; i++) {
	  TParticle *iparticle = (TParticle *) fParticles.At(i);

// Is this a final state particle ?

	  if (!Stable(iparticle)) continue;
      
	  Bool_t  selected =  kTRUE;
	  kf = iparticle->GetPdgCode();
	  ks = iparticle->GetStatusCode();

// --------------------------------------------------------------------------
// Count spectator neutrons and protons (ks == 13, 14)
	  if(ks == 13 || ks == 14){
	      if(kf == kNeutron) fSpecn += 1;
	      if(kf == kProton)  fSpecp += 1;
	  }
// --------------------------------------------------------------------------

	  if (!fSelectAll) {
	      selected = KinematicSelection(iparticle,0)&&SelectFlavor(kf);
	      if (!fSpectators && selected) selected = (ks == 13 || ks == 14);
	  }

// Put particle on the stack if selected

	  if (selected) {
	      nc++;
	      pSelected[i] = 1;
	  } // selected
      } // particle loop final state

// Write particles to stack

      for (i = 0; i<np; i++) {
	  TParticle *  iparticle = (TParticle *) fParticles.At(i);
	  Bool_t  hasMother   = (iparticle->GetFirstMother()>=0);
	  if (pSelected[i]) {
	      
	      kf   = iparticle->GetPdgCode();	      
	      ks   = iparticle->GetStatusCode();	      
	      
	      p[0] = iparticle->Px();
	      p[1] = iparticle->Py();
	      p[2] = iparticle->Pz();
	      origin[0] = fVertex[0]+iparticle->Vx()/10; // [cm]
	      origin[1] = fVertex[1]+iparticle->Vy()/10; // [cm]
	      origin[2] = fVertex[2]+iparticle->Vz()/10; // [cm]
		    
	      tof = kconv*iparticle->T();
	      
	      imo = -1;
	      TParticle* mother = 0;
	      if (hasMother) {
		  imo = iparticle->GetFirstMother();
		  mother = (TParticle *) fParticles.At(imo);
		  imo = (mother->GetPdgCode() != 92 && mother->GetPdgCode() != 99999) ? newPos[imo] : -1;
	      } // if has mother   

	      Bool_t tFlag = (fTrackIt && (ks == 1));
	      PushTrack(tFlag,imo,kf,p,origin,polar,tof,kPNoProcess,nt, 1., ks);
	      KeepTrack(nt);
	      newPos[i] = nt;
	  } // if selected
      } // particle loop
      delete[] newPos;
      delete[] pSelected;
      if (nc>0) {
	  jev += nc;
	  if (jev >= fNpart || fNpart == -1) {
	      break;
	  }
      }
  } // event loop
  MakeHeader();
  SetHighWaterMark(nt);
}

//______________________________________________________________________________
Bool_t AliGenDPMjet::DaughtersSelection(TParticle* iparticle)
{
//
// Looks recursively if one of the daughters has been selected
//
//    printf("\n Consider daughters %d:",iparticle->GetPdgCode());
    Int_t imin = -1;
    Int_t imax = -1;
    Int_t i;
    Bool_t hasDaughters = (iparticle->GetFirstDaughter() >=0);
    Bool_t selected = kFALSE;
    if (hasDaughters) {
	imin = iparticle->GetFirstDaughter();
	imax = iparticle->GetLastDaughter();       
	for (i = imin; i <= imax; i++){
	    TParticle *  jparticle = (TParticle *) fParticles.At(i);	
	    Int_t ip = jparticle->GetPdgCode();
	    if (KinematicSelection(jparticle,0)&&SelectFlavor(ip)) {
		selected=kTRUE; break;
	    }
	    if (DaughtersSelection(jparticle)) {selected=kTRUE; break; }
	}
    } else {
	return kFALSE;
    }
    return selected;
}


//______________________________________________________________________________
Bool_t AliGenDPMjet::SelectFlavor(Int_t pid)
{
// Select flavor of particle
// 0: all
// 4: charm and beauty
// 5: beauty
    Bool_t res = 0;
    
    if (fFlavor == 0) {
	res = kTRUE;
    } else {
	Int_t ifl = TMath::Abs(pid/100);
	if (ifl > 10) ifl/=10;
	res = (fFlavor == ifl);
    }
//
//  This part if gamma writing is inhibited
    if (fNoGammas) 
	res = res && (pid != kGamma && pid != kPi0);
//
    return res;
}

//______________________________________________________________________________
Bool_t AliGenDPMjet::Stable(TParticle*  particle)
{
// Return true for a stable particle
//
    
//    if (particle->GetFirstDaughter() < 0 ) return kTRUE;
    if (particle->GetStatusCode() == 1) return kTRUE;
    else return kFALSE;

}

//______________________________________________________________________________
void AliGenDPMjet::MakeHeader()
{
// Builds the event header, to be called after each event
    AliGenEventHeader* header = new AliGenDPMjetEventHeader("DPMJET");
    ((AliGenDPMjetEventHeader*) header)->SetNProduced(fDPMjet->GetNumStablePc());
    ((AliGenDPMjetEventHeader*) header)->SetImpactParameter(fDPMjet->GetBImpac());
    ((AliGenDPMjetEventHeader*) header)->SetTotalEnergy(fDPMjet->GetTotEnergy());
    ((AliGenDPMjetEventHeader*) header)->SetParticipants(fDPMjet->GetfIp(), 
    							 fDPMjet->GetfIt());
 ((AliGenDPMjetEventHeader*) header)->SetProcessType(fDPMjet->GetProcessCode());
// Bookkeeping for kinematic bias
    ((AliGenDPMjetEventHeader*) header)->SetTrials(fTrials);
// Event Vertex
    header->SetPrimaryVertex(fVertex);
    gAlice->SetGenEventHeader(header);    
    AddHeader(header);
}

void AliGenDPMjet::AddHeader(AliGenEventHeader* header)
{
    // Add header to container or runloader
    if (fContainer) {
        fContainer->AddHeader(header);
    } else {
        AliRunLoader::Instance()->GetHeader()->SetGenEventHeader(header);
    }
}


//______________________________________________________________________________
AliGenDPMjet& AliGenDPMjet::operator=(const  AliGenDPMjet& /*rhs*/)
{
// Assignment operator
    return *this;
}


void AliGenDPMjet::FinishRun()
{
    // Print run statistics
    fDPMjet->Dt_Dtuout();
}

    
//______________________________________________________________________________
Commit	Line	Data
1a52e0ed	1	/**************************************************************************
	2	* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
	3	* *
	4	* Author: The ALICE Off-line Project. *
	5	* Contributors are mentioned in the code where appropriate. *
	6	* *
	7	* Permission to use, copy, modify and distribute this software and its *
	8	* documentation strictly for non-commercial purposes is hereby granted *
	9	* without fee, provided that the above copyright notice appears in all *
	10	* copies and that both the copyright notice and this permission notice *
	11	* appear in the supporting documentation. The authors make no claims *
	12	* about the suitability of this software for any purpose. It is *
	13	* provided "as is" without express or implied warranty. *
	14	**************************************************************************/
	15
	16
	17	// Generator using DPMJET as an external generator
	18	// The main DPMJET options are accessable for the user through this interface.
	19	// Uses the TDPMjet implementation of TGenerator.
	20
	21	#include <TDPMjet.h>
	22	#include <TRandom.h>
	23	#include <TArrayI.h>
	24	#include <TParticle.h>
	25	#include <TGraph.h>
	26	#include <TDatabasePDG.h>
	27	#include <TParticlePDG.h>
	28	#include <TParticleClassPDG.h>
	29	#include <TPDGCode.h>
	30	#include <TLorentzVector.h>
07c71c2e	31	#include <TClonesArray.h>
9dcc0beb	32	#include "AliRunLoader.h"
1a52e0ed	33	#include "AliGenDPMjet.h"
1a52e0ed	34	#include "AliGenDPMjetEventHeader.h"
1a52e0ed	35	#include "AliRun.h"
f2ba02a4	36	#include "AliDpmJetRndm.h"
9dcc0beb	37	#include "AliHeader.h"
	38	#include "AliStack.h"
	39	#include "AliMC.h"
1a52e0ed	40
f97d4a8e	41	ClassImp(AliGenDPMjet)
1a52e0ed	42
	43	//______________________________________________________________________________
	44	AliGenDPMjet::AliGenDPMjet()
f97d4a8e	45	:AliGenMC(),
f97d4a8e	46	fBeamEn(2750.),
f97d4a8e	47	fMinImpactParam(0.),
	48	fMaxImpactParam(5.),
	49	fICentr(0),
	50	fSelectAll(0),
	51	fFlavor(0),
	52	fTrials(0),
	53	fSpectators(1),
	54	fSpecn(0),
	55	fSpecp(0),
	56	fDPMjet(0),
f97d4a8e	57	fNoGammas(0),
	58	fLHC(0),
	59	fPi0Decay(0),
717765ce	60	fDecayAll(0),
f97d4a8e	61	fGenImpPar(0.),
f97d4a8e	62	fProcess(kDpmMb)
1a52e0ed	63	{
1a52e0ed	64	// Constructor
e7c989e4	65	fEnergyCMS = 5500.;
f2ba02a4	66	AliDpmJetRndm::SetDpmJetRandom(GetRandom());
1a52e0ed	67	}
	68
	69
	70	//______________________________________________________________________________
	71	AliGenDPMjet::AliGenDPMjet(Int_t npart)
f97d4a8e	72	:AliGenMC(npart),
f97d4a8e	73	fBeamEn(2750.),
f97d4a8e	74	fMinImpactParam(0.),
	75	fMaxImpactParam(5.),
	76	fICentr(0),
	77	fSelectAll(0),
	78	fFlavor(0),
	79	fTrials(0),
	80	fSpectators(1),
	81	fSpecn(0),
	82	fSpecp(0),
	83	fDPMjet(0),
f97d4a8e	84	fNoGammas(0),
	85	fLHC(0),
	86	fPi0Decay(0),
717765ce	87	fDecayAll(0),
f97d4a8e	88	fGenImpPar(0.),
f97d4a8e	89	fProcess(kDpmMb)
1a52e0ed	90	{
	91	// Default PbPb collisions at 5. 5 TeV
	92	//
e7c989e4	93	fEnergyCMS = 5500.;
1a52e0ed	94	fName = "DPMJET";
1a52e0ed	95	fTitle= "Particle Generator using DPMJET";
1a52e0ed	96	SetTarget();
1a52e0ed	97	SetProjectile();
f2ba02a4	98	fVertex.Set(3);
f2ba02a4	99	AliDpmJetRndm::SetDpmJetRandom(GetRandom());
1a52e0ed	100	}
1a52e0ed	101
ba758f5a	102	AliGenDPMjet::AliGenDPMjet(const AliGenDPMjet &/Dpmjet/)
f97d4a8e	103	:AliGenMC(),
f97d4a8e	104	fBeamEn(2750.),
f97d4a8e	105	fMinImpactParam(0.),
	106	fMaxImpactParam(5.),
	107	fICentr(0),
	108	fSelectAll(0),
	109	fFlavor(0),
	110	fTrials(0),
	111	fSpectators(1),
	112	fSpecn(0),
	113	fSpecp(0),
	114	fDPMjet(0),
f97d4a8e	115	fNoGammas(0),
	116	fLHC(0),
	117	fPi0Decay(0),
717765ce	118	fDecayAll(0),
f97d4a8e	119	fGenImpPar(0.),
f97d4a8e	120	fProcess(kDpmMb)
ba758f5a	121	{
f97d4a8e	122	// Dummy copy constructor
e7c989e4	123	fEnergyCMS = 5500.;
ba758f5a	124	}
1a52e0ed	125
	126	//______________________________________________________________________________
	127	AliGenDPMjet::~AliGenDPMjet()
	128	{
	129	// Destructor
1a52e0ed	130	}
1a52e0ed	131	//______________________________________________________________________________
	132	void AliGenDPMjet::Init()
	133	{
	134	// Initialization
	135
e67e0fb7	136	SetMC(new TDPMjet(fProcess, fAProjectile, fZProjectile, fATarget, fZTarget,
1a52e0ed	137	fBeamEn,fEnergyCMS));
1a52e0ed	138
35c87559	139	fDPMjet=(TDPMjet*) fMCEvGen;
1a52e0ed	140	//
	141	// **** Flag to force central production
	142	// fICentr=1. central production forced
	143	// fICentr<0 && fICentr>-100 -> bmin = fMinImpactParam, bmax = fMaxImpactParam
	144	// fICentr<-99 -> fraction of x-sec. = XSFRAC
	145	// fICentr=-1. -> evaporation/fzc suppressed
	146	// fICentr<-1. -> evaporation/fzc suppressed
cd19c617	147	if (fAProjectile == 1 && TMath::Abs(fZProjectile == 1)) fDPMjet->SetfIdp(1);
ba758f5a	148
1a52e0ed	149	fDPMjet->SetfFCentr(fICentr);
e67e0fb7	150	fDPMjet->SetbRange(fMinImpactParam, fMaxImpactParam);
f97d4a8e	151	fDPMjet->SetPi0Decay(fPi0Decay);
717765ce	152	fDPMjet->SetDecayAll(fDecayAll);
1a52e0ed	153	//
	154	// Initialize DPMjet
	155	//
	156	fDPMjet->Initialize();
1a52e0ed	157	}
	158
	159
	160	//______________________________________________________________________________
	161	void AliGenDPMjet::Generate()
	162	{
	163	// Generate one event
	164
	165	Float_t polar[3] = {0,0,0};
	166	Float_t origin[3] = {0,0,0};
e67e0fb7	167	Float_t p[3];
1a52e0ed	168	Float_t tof;
	169
	170	// converts from mm/c to s
	171	const Float_t kconv = 0.001/2.999792458e8;
	172	Int_t nt = 0;
	173	Int_t jev = 0;
e67e0fb7	174	Int_t kf, ks, imo;
1a52e0ed	175	kf = 0;
1a52e0ed	176	fTrials = 0;
e67e0fb7	177	// Set collision vertex position
e67e0fb7	178	if (fVertexSmear == kPerEvent) Vertex();
1a52e0ed	179
	180	while(1)
	181	{
	182	// Generate one event
	183	// --------------------------------------------------------------------------
	184	fSpecn = 0;
	185	fSpecp = 0;
	186	// --------------------------------------------------------------------------
	187	fDPMjet->GenerateEvent();
	188	fTrials++;
	189
8507138f	190	fDPMjet->ImportParticles(&fParticles,"All");
1a52e0ed	191	if (fLHC) Boost();
	192
	193	// Temporaneo
	194	fGenImpPar = fDPMjet->GetBImpac();
	195
8507138f	196	Int_t np = fParticles.GetEntriesFast();
1a52e0ed	197	printf("\n **************************************************%d\n",np);
	198	Int_t nc=0;
	199	if (np==0) continue;
	200	Int_t i;
	201	Int_t* newPos = new Int_t[np];
	202	Int_t* pSelected = new Int_t[np];
	203
	204	for (i = 0; i<np; i++) {
	205	newPos[i] = i;
	206	pSelected[i] = 0;
	207	}
	208
1a52e0ed	209	// First select parent particles
	210
	211	for (i = 0; i<np; i++) {
8507138f	212	TParticle iparticle = (TParticle ) fParticles.At(i);
1a52e0ed	213
	214	// Is this a parent particle ?
	215
	216	if (Stable(iparticle)) continue;
	217
	218	Bool_t selected = kTRUE;
	219	Bool_t hasSelectedDaughters = kFALSE;
	220
	221	kf = iparticle->GetPdgCode();
cd19c617	222	if (kf == 92 \|\| kf == 99999) continue;
1a52e0ed	223	ks = iparticle->GetStatusCode();
	224	// No initial state partons
	225	if (ks==21) continue;
	226
	227	if (!fSelectAll) selected = KinematicSelection(iparticle, 0) &&
	228	SelectFlavor(kf);
	229	hasSelectedDaughters = DaughtersSelection(iparticle);
	230
	231	// Put particle on the stack if it is either selected or
	232	// it is the mother of at least one seleted particle
	233
	234	if (selected \|\| hasSelectedDaughters) {
	235	nc++;
	236	pSelected[i] = 1;
	237	} // selected
	238	} // particle loop parents
	239
	240	// Now select the final state particles
	241
	242
	243	for (i=0; i<np; i++) {
8507138f	244	TParticle iparticle = (TParticle ) fParticles.At(i);
1a52e0ed	245
	246	// Is this a final state particle ?
	247
	248	if (!Stable(iparticle)) continue;
	249
	250	Bool_t selected = kTRUE;
	251	kf = iparticle->GetPdgCode();
	252	ks = iparticle->GetStatusCode();
	253
	254	// --------------------------------------------------------------------------
	255	// Count spectator neutrons and protons (ks == 13, 14)
	256	if(ks == 13 \|\| ks == 14){
	257	if(kf == kNeutron) fSpecn += 1;
	258	if(kf == kProton) fSpecp += 1;
	259	}
	260	// --------------------------------------------------------------------------
	261
	262	if (!fSelectAll) {
	263	selected = KinematicSelection(iparticle,0)&&SelectFlavor(kf);
	264	if (!fSpectators && selected) selected = (ks == 13 \|\| ks == 14);
	265	}
	266
	267	// Put particle on the stack if selected
	268
	269	if (selected) {
	270	nc++;
	271	pSelected[i] = 1;
	272	} // selected
	273	} // particle loop final state
	274
	275	// Write particles to stack
	276
	277	for (i = 0; i<np; i++) {
8507138f	278	TParticle * iparticle = (TParticle *) fParticles.At(i);
1a52e0ed	279	Bool_t hasMother = (iparticle->GetFirstMother()>=0);
1a52e0ed	280	if (pSelected[i]) {
	281
	282	kf = iparticle->GetPdgCode();
1a52e0ed	283	ks = iparticle->GetStatusCode();
	284
	285	p[0] = iparticle->Px();
	286	p[1] = iparticle->Py();
	287	p[2] = iparticle->Pz();
e67e0fb7	288	origin[0] = fVertex[0]+iparticle->Vx()/10; // [cm]
	289	origin[1] = fVertex[1]+iparticle->Vy()/10; // [cm]
	290	origin[2] = fVertex[2]+iparticle->Vz()/10; // [cm]
	291
1a52e0ed	292	tof = kconv*iparticle->T();
	293
	294	imo = -1;
	295	TParticle* mother = 0;
	296	if (hasMother) {
	297	imo = iparticle->GetFirstMother();
8507138f	298	mother = (TParticle *) fParticles.At(imo);
cd19c617	299	imo = (mother->GetPdgCode() != 92 && mother->GetPdgCode() != 99999) ? newPos[imo] : -1;
1a52e0ed	300	} // if has mother
1a52e0ed	301
1a52e0ed	302	Bool_t tFlag = (fTrackIt && (ks == 1));
642f15cf	303	PushTrack(tFlag,imo,kf,p,origin,polar,tof,kPNoProcess,nt, 1., ks);
1a52e0ed	304	KeepTrack(nt);
	305	newPos[i] = nt;
	306	} // if selected
	307	} // particle loop
	308	delete[] newPos;
	309	delete[] pSelected;
1a52e0ed	310	if (nc>0) {
	311	jev += nc;
	312	if (jev >= fNpart \|\| fNpart == -1) {
1a52e0ed	313	break;
1a52e0ed	314	}
1a52e0ed	315	}
	316	} // event loop
	317	MakeHeader();
	318	SetHighWaterMark(nt);
	319	}
	320
1a52e0ed	321	//______________________________________________________________________________
	322	Bool_t AliGenDPMjet::DaughtersSelection(TParticle* iparticle)
	323	{
	324	//
	325	// Looks recursively if one of the daughters has been selected
	326	//
	327	// printf("\n Consider daughters %d:",iparticle->GetPdgCode());
	328	Int_t imin = -1;
	329	Int_t imax = -1;
	330	Int_t i;
	331	Bool_t hasDaughters = (iparticle->GetFirstDaughter() >=0);
	332	Bool_t selected = kFALSE;
	333	if (hasDaughters) {
	334	imin = iparticle->GetFirstDaughter();
	335	imax = iparticle->GetLastDaughter();
	336	for (i = imin; i <= imax; i++){
8507138f	337	TParticle * jparticle = (TParticle *) fParticles.At(i);
1a52e0ed	338	Int_t ip = jparticle->GetPdgCode();
	339	if (KinematicSelection(jparticle,0)&&SelectFlavor(ip)) {
	340	selected=kTRUE; break;
	341	}
	342	if (DaughtersSelection(jparticle)) {selected=kTRUE; break; }
	343	}
	344	} else {
	345	return kFALSE;
	346	}
	347	return selected;
	348	}
	349
	350
	351
	352	//______________________________________________________________________________
	353	Bool_t AliGenDPMjet::SelectFlavor(Int_t pid)
	354	{
	355	// Select flavor of particle
	356	// 0: all
	357	// 4: charm and beauty
	358	// 5: beauty
	359	Bool_t res = 0;
	360
	361	if (fFlavor == 0) {
	362	res = kTRUE;
	363	} else {
	364	Int_t ifl = TMath::Abs(pid/100);
	365	if (ifl > 10) ifl/=10;
	366	res = (fFlavor == ifl);
	367	}
	368	//
	369	// This part if gamma writing is inhibited
	370	if (fNoGammas)
	371	res = res && (pid != kGamma && pid != kPi0);
	372	//
	373	return res;
	374	}
	375
	376	//______________________________________________________________________________
	377	Bool_t AliGenDPMjet::Stable(TParticle* particle)
	378	{
	379	// Return true for a stable particle
	380	//
	381
	382	// if (particle->GetFirstDaughter() < 0 ) return kTRUE;
	383	if (particle->GetStatusCode() == 1) return kTRUE;
	384	else return kFALSE;
	385
	386	}
	387
1a52e0ed	388	//______________________________________________________________________________
	389	void AliGenDPMjet::MakeHeader()
	390	{
	391	// Builds the event header, to be called after each event
	392	AliGenEventHeader* header = new AliGenDPMjetEventHeader("DPMJET");
	393	((AliGenDPMjetEventHeader*) header)->SetNProduced(fDPMjet->GetNumStablePc());
	394	((AliGenDPMjetEventHeader*) header)->SetImpactParameter(fDPMjet->GetBImpac());
	395	((AliGenDPMjetEventHeader*) header)->SetTotalEnergy(fDPMjet->GetTotEnergy());
1a52e0ed	396	((AliGenDPMjetEventHeader*) header)->SetParticipants(fDPMjet->GetfIp(),
1a52e0ed	397	fDPMjet->GetfIt());
9dcc0beb	398	((AliGenDPMjetEventHeader*) header)->SetProcessType(fDPMjet->GetProcessCode());
1a52e0ed	399	// Bookkeeping for kinematic bias
	400	((AliGenDPMjetEventHeader*) header)->SetTrials(fTrials);
	401	// Event Vertex
f2ba02a4	402	header->SetPrimaryVertex(fVertex);
1a52e0ed	403	gAlice->SetGenEventHeader(header);
d2593e7a	404	AddHeader(header);
1a52e0ed	405	}
1a52e0ed	406
9dcc0beb	407	void AliGenDPMjet::AddHeader(AliGenEventHeader* header)
	408	{
	409	// Add header to container or runloader
	410	if (fContainer) {
	411	fContainer->AddHeader(header);
	412	} else {
33c3c91a	413	AliRunLoader::Instance()->GetHeader()->SetGenEventHeader(header);
9dcc0beb	414	}
9dcc0beb	415	}
1a52e0ed	416
	417
	418	//______________________________________________________________________________
ba758f5a	419	AliGenDPMjet& AliGenDPMjet::operator=(const AliGenDPMjet& /rhs/)
1a52e0ed	420	{
	421	// Assignment operator
	422	return *this;
	423	}
	424
	425
d2593e7a	426	void AliGenDPMjet::FinishRun()
	427	{
	428	// Print run statistics
	429	fDPMjet->Dt_Dtuout();
	430	}
	431
	432
1a52e0ed	433
1a52e0ed	434	//______________________________________________________________________________