[u/mrichter/AliRoot.git] / TTherminator / AliGenTherminator.cxx

// ALICE event generator based on the THERMINATOR model
// It reads the test output of the model and puts it onto
// the stack
// Author: Adam.Kisiel@cern.ch

#include <iostream>
#include <fstream>
#include <sstream>
#include <TClonesArray.h>
#include <TMCProcess.h>
#include <TDatabasePDG.h>
#include <TParticle.h>

#include "AliConst.h"
#include "AliDecayer.h"
#include "AliGenEventHeader.h"
#include "AliGenHijingEventHeader.h"
#include "AliGenTherminator.h"
#include "AliLog.h"
#include "AliRun.h"

ClassImp(AliGenTherminator)

using namespace std;

AliGenTherminator::AliGenTherminator():
  AliGenMC(),
  fNt(0),
  fEventNumber(0),
  fFileName(""),
  fFreezeOutModel(""),
  fTemperature(0.1656),
  fMiuI(-0.0009),
  fMiuS(0.0),
  fMiuB(0.0008),
  fAlfaRange(6.0),
  fRapRange(4.0),
  fRhoMax(8.0),
  fTau(8.0),
  fBWA(0.0),
  fBWVt(1.41),
  fBWDelay(0.0)
{
  // Default constructor
  fParticles = new TClonesArray("TParticle",20000);    
}
AliGenTherminator::AliGenTherminator(Int_t npart):
  AliGenMC(npart),
  fNt(0),
  fEventNumber(0),
  fFileName(""),
  fFreezeOutModel(""),
  fTemperature(0.1656),
  fMiuI(-0.0009),
  fMiuS(0.0),
  fMiuB(0.0008),
  fAlfaRange(6.0),
  fRapRange(4.0),
  fRhoMax(8.0),
  fTau(8.0),
  fBWA(0.0),
  fBWVt(1.41),
  fBWDelay(0.0)
{
  // Constructor specifying the size of the particle table
  fParticles = new TClonesArray("TParticle",20000);    
  fNprimaries = 0;
}

AliGenTherminator::~AliGenTherminator()
{
  //  AliGenMC::~AliGenMC();
  //  if (fTherminator) delete fTherminator;
}

void AliGenTherminator::Generate()
{
  // Run single event generation with the Therminator model
  AliWarning("Generating event from AliGenTherminator");

  Float_t polar[3]    =   {0,0,0};
  Float_t origin[3]   =   {0,0,0};
  Float_t origin0[3]  =   {0,0,0};
  Float_t p[3];
  Float_t mass, energy;

  Int_t nt  = 0;
  Int_t j, kf, ks, imo;
  kf = 0;

  Vertex();
  for (j=0; j < 3; j++) origin0[j] = fVertex[j];

  // Generate one event

  ((TTherminator *) fMCEvGen)->GenerateEvent();
  AliWarning("Generated");
  ((TTherminator *) fMCEvGen)->ImportParticles(fParticles);

  Int_t np = fParticles->GetEntriesFast();
  AliWarning(Form("Imported %d particles", np));

  TParticle *iparticle;
  Double_t evrot = gRandom->Rndm()*TMath::Pi();
  
  for (int i = 0; i < np; i++) {
    iparticle = (TParticle *) fParticles->At(i);
    Bool_t  hasMother   = (iparticle->GetFirstMother()     >=0);
    Bool_t  hasDaughter = (iparticle->GetFirstDaughter()   >=0);
    
    kf   = iparticle->GetPdgCode();
    ks   = iparticle->GetStatusCode();
    Double_t aphi = TMath::ATan2(iparticle->Py(), iparticle->Px());
    Double_t arho = TMath::Hypot(iparticle->Px(), iparticle->Py());
    p[0] = arho*TMath::Cos(aphi + evrot);
    p[1] = arho*TMath::Sin(aphi + evrot);
//     p[0] = iparticle->Px();
//     p[1] = iparticle->Py();
    p[2] = iparticle->Pz();
    mass = TDatabasePDG::Instance()->GetParticle(kf)->Mass();
    energy = sqrt(mass*mass + p[0]*p[0] + p[1]*p[1] + p[2]*p[2]);
    origin[0] = origin0[0]+iparticle->Vx();
    origin[1] = origin0[1]+iparticle->Vy();
    origin[2] = origin0[2]+iparticle->Vz();
	      
    imo = -1;
    TParticle* mother = 0;
    if (hasMother) {
      imo = iparticle->GetFirstMother();
      mother = (TParticle *) fParticles->At(imo);
    } // if has mother   
    Bool_t tFlag = (!hasDaughter);

    printf("Pushing Track %d with status %d mother %d\n", kf, tFlag, imo);
    PushTrack(tFlag,imo,kf,
	      p[0],p[1],p[2],energy,
	      origin[0],origin[1],origin[2],iparticle->T()*0.197327*1e-13/300000000,
	      polar[0],polar[1],polar[2],
	      hasMother ? kPDecay:kPNoProcess,nt);
    
    fNprimaries++;
    KeepTrack(nt);
  }

  SetHighWaterMark(fNprimaries);

  TArrayF eventVertex;
  eventVertex.Set(3);
  eventVertex[0] = origin0[0];
  eventVertex[1] = origin0[1];
  eventVertex[2] = origin0[2];

// Builds the event header, to be called after each event
  AliGenEventHeader* header = new AliGenHijingEventHeader("Therminator");

  // Header
  //  AliGenEventHeader* header = new AliGenEventHeader("Therminator");
  // Event Vertex
//   header->SetPrimaryVertex(eventVertex);
//   header->SetNProduced(fNprimaries);

  ((AliGenHijingEventHeader*) header)->SetNProduced(fNprimaries);
  ((AliGenHijingEventHeader*) header)->SetPrimaryVertex(eventVertex);
  ((AliGenHijingEventHeader*) header)->SetImpactParameter(0.0);
  ((AliGenHijingEventHeader*) header)->SetTotalEnergy(0.0);
  ((AliGenHijingEventHeader*) header)->SetHardScatters(0);
  ((AliGenHijingEventHeader*) header)->SetParticipants(0, 0);
  ((AliGenHijingEventHeader*) header)->SetCollisions(0, 0, 0, 0);
  ((AliGenHijingEventHeader*) header)->SetSpectators(0, 0, 0, 0);
  ((AliGenHijingEventHeader*) header)->SetReactionPlaneAngle(evrot);


// 4-momentum vectors of the triggered jets.
//
// Before final state gluon radiation.
//     TLorentzVector* jet1 = new TLorentzVector(fHijing->GetHINT1(21), 
// 					      fHijing->GetHINT1(22),
// 					      fHijing->GetHINT1(23),
// 					      fHijing->GetHINT1(24));

//     TLorentzVector* jet2 = new TLorentzVector(fHijing->GetHINT1(31), 
// 					      fHijing->GetHINT1(32),
// 					      fHijing->GetHINT1(33),
// 					      fHijing->GetHINT1(34));
// // After final state gluon radiation.
//     TLorentzVector* jet3 = new TLorentzVector(fHijing->GetHINT1(26), 
// 					      fHijing->GetHINT1(27),
// 					      fHijing->GetHINT1(28),
// 					      fHijing->GetHINT1(29));

//     TLorentzVector* jet4 = new TLorentzVector(fHijing->GetHINT1(36), 
// 					      fHijing->GetHINT1(37),
// 					      fHijing->GetHINT1(38),
// 					      fHijing->GetHINT1(39));
//     ((AliGenHijingEventHeader*) header)->SetJets(jet1, jet2, jet3, jet4);
// Bookkeeping for kinematic bias
//     ((AliGenHijingEventHeader*) header)->SetTrials(fTrials);
// Event Vertex
  header->SetPrimaryVertex(fVertex);
  AddHeader(header);
  fCollisionGeometry = (AliGenHijingEventHeader*)  header;

  gAlice->SetGenEventHeader(header); 
}

void AliGenTherminator::Init()
{
  // Initialize global variables and
  // particle and decay tables
  if (fFileName.Length() == 0)
    fFileName = "event.out";
  ReadShareParticleTable();

  SetMC(new TTherminator());
  
  AliGenMC::Init();
  ((TTherminator *) fMCEvGen)->Initialize();
}
void AliGenTherminator::SetFileName(const char *infilename)
{
  // Set parameter filename
  fFileName = infilename;
}
void AliGenTherminator::SetEventNumberInFile(int evnum)
{
  // Set number of events to generate - default: 1
  fEventNumber = evnum;
}

void AliGenTherminator::ReadShareParticleTable()
{
  // Read in particle table from share
  // and add missing particle type to TDatabasePDG

  char str[50];
  char str1[200];
    
  TDatabasePDG *tInstance = TDatabasePDG::Instance();
  TParticlePDG *tParticleType;

  AliWarning(Form("Reading particle types from particles.data"));
  ifstream in("particles.data");
  
  int charge;
    
  int number=0;
  if ((in) && (in.is_open()))
    {
      //START OF HEAD-LINE
      in.ignore(200,'\n');
      in.ignore(200,'\n');
      in.ignore(200,'\n');
      //END OF HEAD-LINE
      
      while (in>>str)
	{
	  if (/*(*str == '#')||*/(*str<65)||(*str>122))
	    {
	      in.getline(str1,200);
	      continue;
	    }
	  double mass, gamma, spin, tI3, tI, q, s, aq, as, c, ac, mc;
	  
	  in>>mass>>gamma>>spin>>tI>>tI3>>q>>s>>aq>>as>>c>>ac>>mc;
	  number++;
	  tParticleType = tInstance->GetParticle((int) mc);
	  if (!tParticleType) {
	    charge = 0;
	    if (strstr(str, "plu")) charge = 1;
	    if (strstr(str, "min")) charge = -1;
	    if (strstr(str, "plb")) charge = -1;
	    if (strstr(str, "mnb")) charge = 1;
	    if (strstr(str, "plp")) charge = 2;
	    if (strstr(str, "ppb")) charge = -2;
	    tInstance->AddParticle(str, str, mass, gamma == 0.0 ? 1:0, gamma, charge , "meson", (int) mc);
	    AliWarning(Form("Added particle %s with PDG PID %d charge %d", str, (int) mc, charge));
	    //	    AliWarning(Form("Quantum numbers q s c aq as ac tI3 %lf %lf %lf %lf %lf %lf %lf", q, s, c, aq, as, ac, tI3));

	  }
	}
      in.close();
    }
  CreateTherminatorInputFile();
}

void AliGenTherminator::CreateTherminatorInputFile()
{
  // Create Therminator input file
  ofstream *ostr = new ofstream("therminator.in");
  (*ostr) << "NumberOfEvents = 1" << endl;
  (*ostr) << "Randomize = 1" << endl;
  (*ostr) << "TableType = SHARE" << endl;
  (*ostr) << "InputDirSHARE = ." << endl;
  (*ostr) << "EventOutputFile = " << fFileName.Data() << endl;
  (*ostr) << "FreezeOutModel = " << fFreezeOutModel.Data() << endl;
  (*ostr) << "BWVt = " << fBWVt << endl;
  (*ostr) << "Tau = " << fTau << endl;
  (*ostr) << "RhoMax = " << fRhoMax << endl;
  (*ostr) << "Temperature = " << fTemperature << endl;
  (*ostr) << "MiuI = " << fMiuI << endl;
  (*ostr) << "MiuS = " << fMiuS << endl;
  (*ostr) << "MiuB = " << fMiuB << endl;
  (*ostr) << "AlphaRange = " << fAlfaRange << endl;
  (*ostr) << "RapidityRange = " << fRapRange << endl;
  (*ostr) << "NumberOfIntegrateSamples = 1000000" << endl;
}

void AliGenTherminator::SetModel(const char *model)
{
  // Set the freeze-out model to use
  fFreezeOutModel = model;
}
Commit	Line	Data
2e967919	1	// ALICE event generator based on the THERMINATOR model
	2	// It reads the test output of the model and puts it onto
	3	// the stack
	4	// Author: Adam.Kisiel@cern.ch
	5
	6	#include <iostream>
	7	#include <fstream>
	8	#include <sstream>
	9	#include <TClonesArray.h>
	10	#include <TMCProcess.h>
	11	#include <TDatabasePDG.h>
	12	#include <TParticle.h>
	13
	14	#include "AliConst.h"
	15	#include "AliDecayer.h"
	16	#include "AliGenEventHeader.h"
9abb118d	17	#include "AliGenHijingEventHeader.h"
2e967919	18	#include "AliGenTherminator.h"
	19	#include "AliLog.h"
	20	#include "AliRun.h"
	21
	22	ClassImp(AliGenTherminator)
	23
	24	using namespace std;
	25
	26	AliGenTherminator::AliGenTherminator():
	27	AliGenMC(),
	28	fNt(0),
	29	fEventNumber(0),
	30	fFileName(""),
	31	fFreezeOutModel(""),
	32	fTemperature(0.1656),
	33	fMiuI(-0.0009),
	34	fMiuS(0.0),
	35	fMiuB(0.0008),
	36	fAlfaRange(6.0),
	37	fRapRange(4.0),
	38	fRhoMax(8.0),
	39	fTau(8.0),
	40	fBWA(0.0),
	41	fBWVt(1.41),
	42	fBWDelay(0.0)
	43	{
	44	// Default constructor
	45	fParticles = new TClonesArray("TParticle",20000);
	46	}
	47	AliGenTherminator::AliGenTherminator(Int_t npart):
	48	AliGenMC(npart),
	49	fNt(0),
	50	fEventNumber(0),
	51	fFileName(""),
	52	fFreezeOutModel(""),
	53	fTemperature(0.1656),
	54	fMiuI(-0.0009),
	55	fMiuS(0.0),
	56	fMiuB(0.0008),
	57	fAlfaRange(6.0),
	58	fRapRange(4.0),
	59	fRhoMax(8.0),
	60	fTau(8.0),
	61	fBWA(0.0),
	62	fBWVt(1.41),
	63	fBWDelay(0.0)
	64	{
	65	// Constructor specifying the size of the particle table
	66	fParticles = new TClonesArray("TParticle",20000);
	67	fNprimaries = 0;
	68	}
	69
	70	AliGenTherminator::~AliGenTherminator()
	71	{
	72	// AliGenMC::~AliGenMC();
	73	// if (fTherminator) delete fTherminator;
	74	}
	75
	76	void AliGenTherminator::Generate()
	77	{
	78	// Run single event generation with the Therminator model
	79	AliWarning("Generating event from AliGenTherminator");
	80
	81	Float_t polar[3] = {0,0,0};
82	Float_t origin[3] = {0,0,0};
83	Float_t origin0[3] = {0,0,0};
84	Float_t p[3];
85	Float_t mass, energy;
86
87	Int_t nt = 0;
88	Int_t j, kf, ks, imo;
89	kf = 0;
90
91	Vertex();
92	for (j=0; j < 3; j++) origin0[j] = fVertex[j];
93
94	// Generate one event
95
96	((TTherminator *) fMCEvGen)->GenerateEvent();
97	AliWarning("Generated");
98	((TTherminator *) fMCEvGen)->ImportParticles(fParticles);
99
100	Int_t np = fParticles->GetEntriesFast();
101	AliWarning(Form("Imported %d particles", np));
102
103	TParticle *iparticle;
9abb118d	104	Double_t evrot = gRandom->Rndm()*TMath::Pi();
2e967919	105
	106	for (int i = 0; i < np; i++) {
	107	iparticle = (TParticle *) fParticles->At(i);
	108	Bool_t hasMother = (iparticle->GetFirstMother() >=0);
	109	Bool_t hasDaughter = (iparticle->GetFirstDaughter() >=0);
	110
	111	kf = iparticle->GetPdgCode();
	112	ks = iparticle->GetStatusCode();
9abb118d	113	Double_t aphi = TMath::ATan2(iparticle->Py(), iparticle->Px());
	114	Double_t arho = TMath::Hypot(iparticle->Px(), iparticle->Py());
	115	p[0] = arho*TMath::Cos(aphi + evrot);
	116	p[1] = arho*TMath::Sin(aphi + evrot);
	117	// p[0] = iparticle->Px();
	118	// p[1] = iparticle->Py();
2e967919	119	p[2] = iparticle->Pz();
	120	mass = TDatabasePDG::Instance()->GetParticle(kf)->Mass();
	121	energy = sqrt(massmass + p[0]p[0] + p[1]p[1] + p[2]p[2]);
	122	origin[0] = origin0[0]+iparticle->Vx();
	123	origin[1] = origin0[1]+iparticle->Vy();
	124	origin[2] = origin0[2]+iparticle->Vz();
	125
	126	imo = -1;
	127	TParticle* mother = 0;
	128	if (hasMother) {
	129	imo = iparticle->GetFirstMother();
	130	mother = (TParticle *) fParticles->At(imo);
	131	} // if has mother
	132	Bool_t tFlag = (!hasDaughter);
	133
	134	printf("Pushing Track %d with status %d mother %d\n", kf, tFlag, imo);
	135	PushTrack(tFlag,imo,kf,
	136	p[0],p[1],p[2],energy,
	137	origin[0],origin[1],origin[2],iparticle->T()0.1973271e-13/300000000,
	138	polar[0],polar[1],polar[2],
	139	hasMother ? kPDecay:kPNoProcess,nt);
	140
	141	fNprimaries++;
	142	KeepTrack(nt);
	143	}
	144
	145	SetHighWaterMark(fNprimaries);
	146
	147	TArrayF eventVertex;
	148	eventVertex.Set(3);
	149	eventVertex[0] = origin0[0];
	150	eventVertex[1] = origin0[1];
	151	eventVertex[2] = origin0[2];
	152
9abb118d	153	// Builds the event header, to be called after each event
	154	AliGenEventHeader* header = new AliGenHijingEventHeader("Therminator");
	155
2e967919	156	// Header
9abb118d	157	// AliGenEventHeader* header = new AliGenEventHeader("Therminator");
2e967919	158	// Event Vertex
9abb118d	159	// header->SetPrimaryVertex(eventVertex);
	160	// header->SetNProduced(fNprimaries);
	161
	162	((AliGenHijingEventHeader*) header)->SetNProduced(fNprimaries);
	163	((AliGenHijingEventHeader*) header)->SetPrimaryVertex(eventVertex);
	164	((AliGenHijingEventHeader*) header)->SetImpactParameter(0.0);
	165	((AliGenHijingEventHeader*) header)->SetTotalEnergy(0.0);
	166	((AliGenHijingEventHeader*) header)->SetHardScatters(0);
	167	((AliGenHijingEventHeader*) header)->SetParticipants(0, 0);
	168	((AliGenHijingEventHeader*) header)->SetCollisions(0, 0, 0, 0);
	169	((AliGenHijingEventHeader*) header)->SetSpectators(0, 0, 0, 0);
	170	((AliGenHijingEventHeader*) header)->SetReactionPlaneAngle(evrot);
	171
	172
	173	// 4-momentum vectors of the triggered jets.
	174	//
	175	// Before final state gluon radiation.
	176	// TLorentzVector* jet1 = new TLorentzVector(fHijing->GetHINT1(21),
	177	// fHijing->GetHINT1(22),
	178	// fHijing->GetHINT1(23),
	179	// fHijing->GetHINT1(24));
	180
	181	// TLorentzVector* jet2 = new TLorentzVector(fHijing->GetHINT1(31),
	182	// fHijing->GetHINT1(32),
	183	// fHijing->GetHINT1(33),
	184	// fHijing->GetHINT1(34));
	185	// // After final state gluon radiation.
	186	// TLorentzVector* jet3 = new TLorentzVector(fHijing->GetHINT1(26),
	187	// fHijing->GetHINT1(27),
	188	// fHijing->GetHINT1(28),
	189	// fHijing->GetHINT1(29));
	190
	191	// TLorentzVector* jet4 = new TLorentzVector(fHijing->GetHINT1(36),
	192	// fHijing->GetHINT1(37),
	193	// fHijing->GetHINT1(38),
	194	// fHijing->GetHINT1(39));
	195	// ((AliGenHijingEventHeader*) header)->SetJets(jet1, jet2, jet3, jet4);
	196	// Bookkeeping for kinematic bias
	197	// ((AliGenHijingEventHeader*) header)->SetTrials(fTrials);
	198	// Event Vertex
	199	header->SetPrimaryVertex(fVertex);
	200	AddHeader(header);
	201	fCollisionGeometry = (AliGenHijingEventHeader*) header;
	202
2e967919	203	gAlice->SetGenEventHeader(header);
	204	}
	205
	206	void AliGenTherminator::Init()
	207	{
	208	// Initialize global variables and
	209	// particle and decay tables
	210	if (fFileName.Length() == 0)
	211	fFileName = "event.out";
	212	ReadShareParticleTable();
	213
	214	SetMC(new TTherminator());
	215
	216	AliGenMC::Init();
	217	((TTherminator *) fMCEvGen)->Initialize();
	218	}
	219	void AliGenTherminator::SetFileName(const char *infilename)
	220	{
	221	// Set parameter filename
	222	fFileName = infilename;
	223	}
	224	void AliGenTherminator::SetEventNumberInFile(int evnum)
	225	{
	226	// Set number of events to generate - default: 1
	227	fEventNumber = evnum;
	228	}
	229
	230	void AliGenTherminator::ReadShareParticleTable()
	231	{
	232	// Read in particle table from share
	233	// and add missing particle type to TDatabasePDG
	234
	235	char str[50];
	236	char str1[200];
	237
	238	TDatabasePDG *tInstance = TDatabasePDG::Instance();
	239	TParticlePDG *tParticleType;
	240
	241	AliWarning(Form("Reading particle types from particles.data"));
	242	ifstream in("particles.data");
	243
	244	int charge;
	245
	246	int number=0;
	247	if ((in) && (in.is_open()))
	248	{
	249	//START OF HEAD-LINE
	250	in.ignore(200,'\n');
	251	in.ignore(200,'\n');
	252	in.ignore(200,'\n');
	253	//END OF HEAD-LINE
	254
	255	while (in>>str)
	256	{
	257	if (/(str == '#')\|\|/(str<65)\|\|(*str>122))
	258	{
	259	in.getline(str1,200);
	260	continue;
	261	}
	262	double mass, gamma, spin, tI3, tI, q, s, aq, as, c, ac, mc;
	263
	264	in>>mass>>gamma>>spin>>tI>>tI3>>q>>s>>aq>>as>>c>>ac>>mc;
	265	number++;
	266	tParticleType = tInstance->GetParticle((int) mc);
267	if (!tParticleType) {
268	charge = 0;
269	if (strstr(str, "plu")) charge = 1;
270	if (strstr(str, "min")) charge = -1;
271	if (strstr(str, "plb")) charge = -1;
272	if (strstr(str, "mnb")) charge = 1;
273	if (strstr(str, "plp")) charge = 2;
274	if (strstr(str, "ppb")) charge = -2;
275	tInstance->AddParticle(str, str, mass, gamma == 0.0 ? 1:0, gamma, charge , "meson", (int) mc);
276	AliWarning(Form("Added particle %s with PDG PID %d charge %d", str, (int) mc, charge));
277	// AliWarning(Form("Quantum numbers q s c aq as ac tI3 %lf %lf %lf %lf %lf %lf %lf", q, s, c, aq, as, ac, tI3));
278
279	}
280	}
281	in.close();
282	}
283	CreateTherminatorInputFile();
284	}
285
286	void AliGenTherminator::CreateTherminatorInputFile()
287	{
288	// Create Therminator input file
289	ofstream *ostr = new ofstream("therminator.in");
290	(*ostr) << "NumberOfEvents = 1" << endl;
291	(*ostr) << "Randomize = 1" << endl;
292	(*ostr) << "TableType = SHARE" << endl;
293	(*ostr) << "InputDirSHARE = ." << endl;
294	(*ostr) << "EventOutputFile = " << fFileName.Data() << endl;
295	(*ostr) << "FreezeOutModel = " << fFreezeOutModel.Data() << endl;
296	(*ostr) << "BWVt = " << fBWVt << endl;
297	(*ostr) << "Tau = " << fTau << endl;
298	(*ostr) << "RhoMax = " << fRhoMax << endl;
299	(*ostr) << "Temperature = " << fTemperature << endl;
300	(*ostr) << "MiuI = " << fMiuI << endl;
301	(*ostr) << "MiuS = " << fMiuS << endl;
302	(*ostr) << "MiuB = " << fMiuB << endl;
303	(*ostr) << "AlphaRange = " << fAlfaRange << endl;
304	(*ostr) << "RapidityRange = " << fRapRange << endl;
305	(*ostr) << "NumberOfIntegrateSamples = 1000000" << endl;
306	}
307
308	void AliGenTherminator::SetModel(const char *model)
309	{
310	// Set the freeze-out model to use
311	fFreezeOutModel = model;
312	}