[u/mrichter/AliRoot.git] / PYTHIA6 / AliGenPythia.h

#ifndef ALIGENPYTHIA_H
#define ALIGENPYTHIA_H
/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 * See cxx source for full Copyright notice                               */


/* $Id$ */

//
// Generator using the TPythia interface (via AliPythia)
// to generate pp collisions.
// Using SetNuclei() also nuclear modifications to the structure functions
// can be taken into account. This makes, of course, only sense for the
// generation of the products of hard processes (heavy flavor, jets ...)
//
// andreas.morsch@cern.ch
//

#include "AliGenMC.h"
#include "AliPythia.h"

class AliPythia;
class TParticle;
class AliGenPythiaEventHeader;
class AliGenEventHeader;
class AliStack;
class AliRunLoader;
class TObjArray; 

class AliGenPythia : public AliGenMC
{
 public:

    typedef enum {kFlavorSelection, kParentSelection} StackFillOpt_t;
    typedef enum {kCountAll, kCountParents, kCountTrackables} CountMode_t;
    typedef enum {kCluster, kCell} JetRecMode_t;
	  
    AliGenPythia();
    AliGenPythia(Int_t npart);
    virtual ~AliGenPythia();
    virtual void    Generate();
    virtual void    Init();
    // Range of events to be printed
    virtual void    SetEventListRange(Int_t eventFirst=-1, Int_t eventLast=-1);
    // Select process type
    virtual void    SetProcess(Process_t proc = kPyCharm) {fProcess = proc;}
    virtual void    SetTune(Int_t itune) {fItune = itune;}

    // Select structure function
    virtual void    SetStrucFunc(StrucFunc_t func =  kCTEQ5L) {fStrucFunc = func;}
    // Select pt of hard scattering 
    virtual void    SetPtHard(Float_t ptmin = 0, Float_t ptmax = 1.e10)
	{fPtHardMin = ptmin; fPtHardMax = ptmax; }
    // y of hard scattering
    virtual void    SetYHard(Float_t ymin = -1.e10, Float_t ymax = 1.e10)
	{fYHardMin = ymin; fYHardMax = ymax; }
    // Set initial and final state gluon radiation
    virtual void    SetGluonRadiation(Int_t iIn, Int_t iFin)
	{fGinit = iIn; fGfinal = iFin;}
    // Intrinsic kT
    virtual void    SetPtKick(Float_t kt = 1.)
	{fPtKick = kt;}
    // Use the Pythia 6.3 new multiple interations scenario
    virtual void    UseNewMultipleInteractionsScenario() {fNewMIS = kTRUE;}
    // Switch off heavy flavors
    virtual void    SwitchHFOff() {fHFoff = kTRUE;}
    // Set centre of mass energy
    virtual void    SetEnergyCMS(Float_t energy = 5500) {fEnergyCMS = energy;}
    // Treat protons as inside nuclei with mass numbers a1 and a2
    virtual void    SetNuclei(Int_t a1, Int_t a2, Int_t pdfset = 0);
    //
    // Trigger options
    //
    // Energy range for jet trigger
    virtual void    SetJetEtRange(Float_t etmin = 0., Float_t etmax = 1.e4)
	{fEtMinJet = etmin; fEtMaxJet = etmax;}
    // Eta range for jet trigger
    virtual void    SetJetEtaRange(Float_t etamin = -20., Float_t etamax = 20.)
	{fEtaMinJet = etamin; fEtaMaxJet = etamax;}
    // Phi range for jet trigger
    virtual void    SetJetPhiRange(Float_t phimin = 0., Float_t phimax = 360.)
	{fPhiMinJet = TMath::Pi()*phimin/180.; fPhiMaxJet = TMath::Pi()*phimax/180.;}
    // Jet reconstruction mode; default is cone algorithm
    virtual void    SetJetReconstructionMode(Int_t mode = kCell) {fJetReconstruction = mode;}
    // Eta range for gamma trigger 
    virtual void    SetGammaEtaRange(Float_t etamin = -20., Float_t etamax = 20.)
	{fEtaMinGamma = etamin; fEtaMaxGamma = etamax;}
    // Phi range for gamma trigger
    virtual void    SetGammaPhiRange(Float_t phimin = 0., Float_t phimax = 360.)
	{fPhiMinGamma = TMath::Pi()*phimin/180.; fPhiMaxGamma = TMath::Pi()*phimax/180.;}
   // Select jets with fragmentation photon or pi0 going to PHOS or EMCAL
    virtual void  SetFragPhotonInCalo(Bool_t b)  {fFragPhotonInCalo = b;}
    virtual void  SetPi0InCalo       (Bool_t b)  {fPi0InCalo    = b;}
    virtual void  SetPhotonInCalo(Bool_t b)      {fPhotonInCalo = b;}
    virtual void  SetCheckPHOS (Bool_t b)        {fCheckPHOS    = b;}
    virtual void  SetCheckEMCAL(Bool_t b)        {fCheckEMCAL   = b;}
    virtual void  SetFragPhotonInEMCAL(Bool_t b) {fCheckEMCAL   = b; fFragPhotonInCalo = b;}
    virtual void  SetFragPhotonInPHOS(Bool_t b)  {fCheckPHOS    = b; fFragPhotonInCalo = b;}
    virtual void  SetPi0InEMCAL(Bool_t b)        {fCheckEMCAL   = b; fPi0InCalo        = b;}
    virtual void  SetPi0InPHOS(Bool_t b)         {fCheckPHOS    = b; fPi0InCalo        = b;}
    virtual void  SetPhotonInEMCAL(Bool_t b)     {fCheckEMCAL   = b; fPhotonInCalo     = b;}
    virtual void  SetElectronInEMCAL(Bool_t b)   {fEleInEMCAL   = b;}
    virtual void  SetPhotonInPHOS(Bool_t b)      {fCheckPHOS    = b; fPhotonInCalo     = b;}

    // Trigger on a minimum multiplicity
    virtual void  SetTriggerChargedMultiplicity(Int_t multiplicity, Float_t etamax = 0, Float_t ptmin = -1.) 
    {fTriggerMultiplicity = multiplicity; fTriggerMultiplicityEta = etamax; 
      fTriggerMultiplicityPtMin = ptmin;}
	
    virtual void  SetPhotonInPHOSeta(Bool_t b)   {fCheckPHOSeta = b; fPhotonInCalo     = b;}
    virtual void  SetFragPhotonOrPi0MinPt(Float_t pt)      {fFragPhotonOrPi0MinPt = pt;}
    virtual void  SetPhotonMinPt(Float_t pt)     {fPhotonMinPt = pt;}
    virtual void  SetElectronMinPt(Float_t pt)     {fElectronMinPt = pt;}
    // Trigger and rotate event 
    void RotatePhi(Int_t iphcand, Bool_t& okdd);
    // Trigger on a single particle
    virtual void    SetTriggerParticle(Int_t particle = 0, Float_t etamax = 0.9) 
	{fTriggerParticle = particle; fTriggerEta = etamax;}
    //
    // Heavy flavor options
    //
    // Set option for feed down from higher family
    virtual void SetFeedDownHigherFamily(Bool_t opt) {
	fFeedDownOpt = opt;
    }
    // Set option for selecting particles kept in stack according to flavor
    // or to parent selection
    virtual void SetStackFillOpt(StackFillOpt_t opt) {
	fStackFillOpt = opt;
    }
    // Set fragmentation option
    virtual void SetFragmentation(Bool_t opt) {
	fFragmentation = opt;
    }
    // Set counting mode
    virtual void SetCountMode(CountMode_t mode) {
	fCountMode = mode;
    }
    //
    // Quenching
    //
    // Set quenching mode 0 = no, 1 = AM, 2 = IL,  3 = NA, 4 = ACS
    virtual void SetQuench(Int_t flag = 0) {fQuench = flag;}
    // Set transport coefficient.
    void SetQhat(Float_t qhat) {fQhat = qhat;}
    //Set initial medium length.
    void SetLength(Float_t length) {fLength = length;}

    virtual void SetHadronisation(Int_t flag = 1) {fHadronisation = flag;}
    virtual void SetPatchOmegaDalitz(Int_t flag = 1) {fPatchOmegaDalitz = flag;}
    virtual void SetReadFromFile(const Text_t *filname) {fkFileName = filname;  fReadFromFile = 1;}    

    //
    // Pile-up
    //
    // Get interaction rate for pileup studies
    virtual void    SetInteractionRate(Float_t rate,Float_t timewindow = 90.e-6);
    virtual Float_t GetInteractionRate() const {return fInteractionRate;}
    // get cross section of process
    virtual Float_t GetXsection() const {return fXsection;}
    // get triggered jets
    void GetJets(Int_t& njets, Int_t& ntrig, Float_t jets[4][10]);
    void RecJetsUA1(Int_t& njets, Float_t jets[4][50]);
    void SetPycellParameters(Float_t etamax = 2., Int_t neta = 274, Int_t nphi = 432,
			     Float_t thresh = 0., Float_t etseed = 4.,
			     Float_t minet = 10., Float_t r = 1.);
    
  void LoadEvent(AliStack* stack, Int_t flag = 0, Int_t reHadr = 0);
  void LoadEvent(TObjArray* stack, Int_t flag = 0, Int_t reHadr = 0);
    // Getters
    virtual Process_t    GetProcess() const {return fProcess;}
    virtual StrucFunc_t  GetStrucFunc() const {return fStrucFunc;}
    virtual void         GetPtHard(Float_t& ptmin, Float_t& ptmax) const
	{ptmin = fPtHardMin; ptmax = fPtHardMax;}
    virtual void         GetNuclei(Int_t&  a1, Int_t& a2) const
	{a1 = fAProjectile; a2 = fATarget;}
    virtual void         GetJetEtRange(Float_t& etamin, Float_t& etamax) const
	{etamin = fEtaMinJet; etamax = fEtaMaxJet;}
    virtual void         GetJetPhiRange(Float_t& phimin, Float_t& phimax) const
	{phimin = fPhiMinJet*180./TMath::Pi(); phimax = fPhiMaxJet*180/TMath::Pi();}
    virtual void         GetGammaEtaRange(Float_t& etamin, Float_t& etamax) const
	{etamin = fEtaMinGamma; etamax = fEtaMaxGamma;}
    virtual void         GetGammaPhiRange(Float_t& phimin, Float_t& phimax) const
	{phimin = fPhiMinGamma*180./TMath::Pi(); phimax = fPhiMaxGamma*180./TMath::Pi();}
    //
    Bool_t IsInEMCAL(Float_t phi, Float_t eta);
    Bool_t IsInPHOS(Float_t phi, Float_t eta);
    //
    virtual void FinishRun();
    Bool_t CheckTrigger(TParticle* jet1, TParticle* jet2);
    //Used in some processes to selected child properties
    Bool_t CheckKinematicsOnChild();
    void     GetSubEventTime();

 protected:
    // adjust the weight from kinematic cuts
    void     AdjustWeights() const;
    Int_t    GenerateMB();
    void     MakeHeader();    
    void     GeneratePileup();
    Process_t   fProcess;           //Process type
    Int_t       fItune;             // Pythia tune > 6.4
    StrucFunc_t fStrucFunc;         //Structure Function
    Float_t     fKineBias;          //!Bias from kinematic selection
    Int_t       fTrials;            //!Number of trials for current event
    Int_t       fTrialsRun;         //!Number of trials for run
    Float_t     fQ;                 //Mean Q
    Float_t     fX1;                //Mean x1
    Float_t     fX2;                //Mean x2
    Float_t     fEventTime;         //Time of the subevent
    Float_t     fInteractionRate;   //Interaction rate (set by user)
    Float_t     fTimeWindow;        //Time window for pileup events (set by user)
    Int_t       fCurSubEvent;       //Index of the current sub-event
    TArrayF     *fEventsTime;       //Subevents time for pileup
    Int_t       fNev;               //Number of events 
    Int_t       fFlavorSelect;      //Heavy Flavor Selection
    Float_t     fXsection;          //Cross-section
    AliPythia   *fPythia;           //!Pythia 
    Float_t     fPtHardMin;         //lower pT-hard cut 
    Float_t     fPtHardMax;         //higher pT-hard cut
    Float_t     fYHardMin;          //lower  y-hard cut 
    Float_t     fYHardMax;          //higher y-hard cut
    Int_t       fGinit;             //initial state gluon radiation
    Int_t       fGfinal;            //final state gluon radiation
    Int_t       fHadronisation;     //hadronisation
    Bool_t      fPatchOmegaDalitz;  //flag for omega dalitz decay patch
    Int_t       fNpartons;          //Number of partons before hadronisation
    Int_t       fReadFromFile;      //read partons from file
    Int_t       fQuench;            //Flag for quenching
    Float_t     fQhat;              //Transport coefficient (GeV^2/fm)
    Float_t     fLength;            //Medium length (fm)
    Float_t     fImpact;            //Impact parameter for quenching simulation (q-pythia) 
    Float_t     fPtKick;            //Transverse momentum kick
    Bool_t      fFullEvent;         //!Write Full event if true
    AliDecayer  *fDecayer;          //!Pointer to the decayer instance
    Int_t       fDebugEventFirst;   //!First event to debug
    Int_t       fDebugEventLast;    //!Last  event to debug
    Float_t     fEtMinJet;          //Minimum et of triggered Jet
    Float_t     fEtMaxJet;          //Maximum et of triggered Jet
    Float_t     fEtaMinJet;         //Minimum eta of triggered Jet
    Float_t     fEtaMaxJet;         //Maximum eta of triggered Jet
    Float_t     fPhiMinJet;         //Minimum phi of triggered Jet
    Float_t     fPhiMaxJet;         //Maximum phi of triggered Jet
    Int_t       fJetReconstruction; //Jet Reconstruction mode 
    Float_t     fEtaMinGamma;       // Minimum eta of triggered gamma
    Float_t     fEtaMaxGamma;       // Maximum eta of triggered gamma
    Float_t     fPhiMinGamma;       // Minimum phi of triggered gamma
    Float_t     fPhiMaxGamma;       // Maximum phi of triggered gamma
    Float_t     fPycellEtaMax;      // Max. eta for Pycell 
    Int_t       fPycellNEta;        // Number of eta bins for Pycell 
    Int_t       fPycellNPhi;        // Number of phi bins for Pycell
    Float_t	fPycellThreshold;   // Pycell threshold
    Float_t 	fPycellEtSeed;      // Pycell seed
    Float_t	fPycellMinEtJet;    // Pycell min. jet et
    Float_t	fPycellMaxRadius;   // Pycell cone radius
    StackFillOpt_t fStackFillOpt;   // Stack filling with all particles with
                                    // that flavour or only with selected
                                    // parents and their decays
    Bool_t fFeedDownOpt;            // Option to set feed down from higher
                                    // quark families (e.g. b->c)
    Bool_t  fFragmentation;         // Option to activate fragmentation by Pythia
    Bool_t  fSetNuclei;             // Flag indicating that SetNuclei has been called
    Bool_t  fNewMIS;                // Flag for the new multipple interactions scenario
    Bool_t  fHFoff;                 // Flag for switching heafy flavor production off
    Int_t   fNucPdf;                // Nuclear pdf 0: EKS98 1: EPS08
    Int_t   fTriggerParticle;       // Trigger on this particle ...
    Float_t fTriggerEta;            // .. within |eta| < fTriggerEta
    Int_t       fTriggerMultiplicity;       // Trigger on events with a minimum charged multiplicity
    Float_t     fTriggerMultiplicityEta;    // in a given eta range
    Float_t     fTriggerMultiplicityPtMin;  // above this pT 
    CountMode_t fCountMode;         // Options for counting when the event will be finished.     
    // fCountMode = kCountAll         --> All particles that end up in the
    //                                    stack are counted
    // fCountMode = kCountParents     --> Only selected parents are counted
    // fCountMode = kCountTrackabless --> Only particles flagged for tracking
    //                                     are counted
    //
    //

    AliGenPythiaEventHeader* fHeader;  //! Event header
    AliRunLoader*            fRL;      //! Run Loader
    const Text_t* fkFileName;          //! Name of file to read from


    Bool_t fFragPhotonInCalo; // Option to ask for Fragmentation Photon in calorimeters acceptance
    Bool_t fPi0InCalo;        // Option to ask for Pi0 in calorimeters acceptance
    Bool_t fPhotonInCalo;     // Option to ask for Decay Photon in calorimeter acceptance
    Bool_t fEleInEMCAL;       // Option to ask for Electron in EMCAL acceptance
    Bool_t fCheckEMCAL;       // Option to ask for FragPhoton or Pi0 in calorimeters EMCAL acceptance
    Bool_t fCheckPHOS;        // Option to ask for FragPhoton or Pi0 in calorimeters PHOS acceptance
    Bool_t fCheckPHOSeta;     // Option to ask for PHOS eta acceptance
    Float_t fFragPhotonOrPi0MinPt; // Minimum momentum of Fragmentation Photon or Pi0
    Float_t fPhotonMinPt;          // Minimum momentum of Photon 
    Float_t fElectronMinPt;        // Minimum momentum of Electron 
    //Calorimeters eta-phi acceptance 
    Float_t fPHOSMinPhi;           // Minimum phi PHOS
    Float_t fPHOSMaxPhi;           // Maximum phi PHOS
    Float_t fPHOSEta;              // Minimum eta PHOS
    Float_t fEMCALMinPhi;          // Minimum phi EMCAL
    Float_t fEMCALMaxPhi;          // Maximum phi EMCAL
    Float_t fEMCALEta;             // Maximum eta EMCAL
 private:
    AliGenPythia(const AliGenPythia &Pythia);
    AliGenPythia & operator=(const AliGenPythia & rhs);

    ClassDef(AliGenPythia, 10) // AliGenerator interface to Pythia
};
#endif
Commit	Line	Data
	1	#ifndef ALIGENPYTHIA_H
	2	#define ALIGENPYTHIA_H
	3	/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
	4	* See cxx source for full Copyright notice */
	5
	6
	7	/* $Id$ */
	8
	9	//
	10	// Generator using the TPythia interface (via AliPythia)
	11	// to generate pp collisions.
	12	// Using SetNuclei() also nuclear modifications to the structure functions
	13	// can be taken into account. This makes, of course, only sense for the
	14	// generation of the products of hard processes (heavy flavor, jets ...)
	15	//
	16	// andreas.morsch@cern.ch
	17	//
	18
	19	#include "AliGenMC.h"
	20	#include "AliPythia.h"
	21
	22	class AliPythia;
	23	class TParticle;
	24	class AliGenPythiaEventHeader;
	25	class AliGenEventHeader;
	26	class AliStack;
	27	class AliRunLoader;
	28	class TObjArray;
	29
	30	class AliGenPythia : public AliGenMC
	31	{
	32	public:
	33
	34	typedef enum {kFlavorSelection, kParentSelection} StackFillOpt_t;
	35	typedef enum {kCountAll, kCountParents, kCountTrackables} CountMode_t;
	36	typedef enum {kCluster, kCell} JetRecMode_t;
	37
	38	AliGenPythia();
	39	AliGenPythia(Int_t npart);
	40	virtual ~AliGenPythia();
	41	virtual void Generate();
	42	virtual void Init();
	43	// Range of events to be printed
	44	virtual void SetEventListRange(Int_t eventFirst=-1, Int_t eventLast=-1);
	45	// Select process type
	46	virtual void SetProcess(Process_t proc = kPyCharm) {fProcess = proc;}
	47	virtual void SetTune(Int_t itune) {fItune = itune;}
	48
	49	// Select structure function
	50	virtual void SetStrucFunc(StrucFunc_t func = kCTEQ5L) {fStrucFunc = func;}
	51	// Select pt of hard scattering
	52	virtual void SetPtHard(Float_t ptmin = 0, Float_t ptmax = 1.e10)
	53	{fPtHardMin = ptmin; fPtHardMax = ptmax; }
	54	// y of hard scattering
	55	virtual void SetYHard(Float_t ymin = -1.e10, Float_t ymax = 1.e10)
	56	{fYHardMin = ymin; fYHardMax = ymax; }
	57	// Set initial and final state gluon radiation
	58	virtual void SetGluonRadiation(Int_t iIn, Int_t iFin)
	59	{fGinit = iIn; fGfinal = iFin;}
	60	// Intrinsic kT
	61	virtual void SetPtKick(Float_t kt = 1.)
	62	{fPtKick = kt;}
	63	// Use the Pythia 6.3 new multiple interations scenario
	64	virtual void UseNewMultipleInteractionsScenario() {fNewMIS = kTRUE;}
	65	// Switch off heavy flavors
	66	virtual void SwitchHFOff() {fHFoff = kTRUE;}
	67	// Set centre of mass energy
	68	virtual void SetEnergyCMS(Float_t energy = 5500) {fEnergyCMS = energy;}
	69	// Treat protons as inside nuclei with mass numbers a1 and a2
	70	virtual void SetNuclei(Int_t a1, Int_t a2, Int_t pdfset = 0);
	71	//
	72	// Trigger options
	73	//
	74	// Energy range for jet trigger
	75	virtual void SetJetEtRange(Float_t etmin = 0., Float_t etmax = 1.e4)
	76	{fEtMinJet = etmin; fEtMaxJet = etmax;}
	77	// Eta range for jet trigger
	78	virtual void SetJetEtaRange(Float_t etamin = -20., Float_t etamax = 20.)
	79	{fEtaMinJet = etamin; fEtaMaxJet = etamax;}
	80	// Phi range for jet trigger
	81	virtual void SetJetPhiRange(Float_t phimin = 0., Float_t phimax = 360.)
	82	{fPhiMinJet = TMath::Pi()phimin/180.; fPhiMaxJet = TMath::Pi()phimax/180.;}
	83	// Jet reconstruction mode; default is cone algorithm
	84	virtual void SetJetReconstructionMode(Int_t mode = kCell) {fJetReconstruction = mode;}
	85	// Eta range for gamma trigger
	86	virtual void SetGammaEtaRange(Float_t etamin = -20., Float_t etamax = 20.)
	87	{fEtaMinGamma = etamin; fEtaMaxGamma = etamax;}
	88	// Phi range for gamma trigger
	89	virtual void SetGammaPhiRange(Float_t phimin = 0., Float_t phimax = 360.)
	90	{fPhiMinGamma = TMath::Pi()phimin/180.; fPhiMaxGamma = TMath::Pi()phimax/180.;}
	91	// Select jets with fragmentation photon or pi0 going to PHOS or EMCAL
	92	virtual void SetFragPhotonInCalo(Bool_t b) {fFragPhotonInCalo = b;}
	93	virtual void SetPi0InCalo (Bool_t b) {fPi0InCalo = b;}
	94	virtual void SetPhotonInCalo(Bool_t b) {fPhotonInCalo = b;}
	95	virtual void SetCheckPHOS (Bool_t b) {fCheckPHOS = b;}
	96	virtual void SetCheckEMCAL(Bool_t b) {fCheckEMCAL = b;}
	97	virtual void SetFragPhotonInEMCAL(Bool_t b) {fCheckEMCAL = b; fFragPhotonInCalo = b;}
	98	virtual void SetFragPhotonInPHOS(Bool_t b) {fCheckPHOS = b; fFragPhotonInCalo = b;}
	99	virtual void SetPi0InEMCAL(Bool_t b) {fCheckEMCAL = b; fPi0InCalo = b;}
	100	virtual void SetPi0InPHOS(Bool_t b) {fCheckPHOS = b; fPi0InCalo = b;}
	101	virtual void SetPhotonInEMCAL(Bool_t b) {fCheckEMCAL = b; fPhotonInCalo = b;}
	102	virtual void SetElectronInEMCAL(Bool_t b) {fEleInEMCAL = b;}
	103	virtual void SetPhotonInPHOS(Bool_t b) {fCheckPHOS = b; fPhotonInCalo = b;}
	104
	105	// Trigger on a minimum multiplicity
	106	virtual void SetTriggerChargedMultiplicity(Int_t multiplicity, Float_t etamax = 0, Float_t ptmin = -1.)
	107	{fTriggerMultiplicity = multiplicity; fTriggerMultiplicityEta = etamax;
	108	fTriggerMultiplicityPtMin = ptmin;}
	109
	110	virtual void SetPhotonInPHOSeta(Bool_t b) {fCheckPHOSeta = b; fPhotonInCalo = b;}
	111	virtual void SetFragPhotonOrPi0MinPt(Float_t pt) {fFragPhotonOrPi0MinPt = pt;}
	112	virtual void SetPhotonMinPt(Float_t pt) {fPhotonMinPt = pt;}
	113	virtual void SetElectronMinPt(Float_t pt) {fElectronMinPt = pt;}
	114	// Trigger and rotate event
	115	void RotatePhi(Int_t iphcand, Bool_t& okdd);
	116	// Trigger on a single particle
	117	virtual void SetTriggerParticle(Int_t particle = 0, Float_t etamax = 0.9)
	118	{fTriggerParticle = particle; fTriggerEta = etamax;}
	119	//
	120	// Heavy flavor options
	121	//
	122	// Set option for feed down from higher family
	123	virtual void SetFeedDownHigherFamily(Bool_t opt) {
	124	fFeedDownOpt = opt;
	125	}
	126	// Set option for selecting particles kept in stack according to flavor
	127	// or to parent selection
	128	virtual void SetStackFillOpt(StackFillOpt_t opt) {
	129	fStackFillOpt = opt;
	130	}
	131	// Set fragmentation option
	132	virtual void SetFragmentation(Bool_t opt) {
	133	fFragmentation = opt;
	134	}
	135	// Set counting mode
	136	virtual void SetCountMode(CountMode_t mode) {
	137	fCountMode = mode;
	138	}
	139	//
	140	// Quenching
	141	//
	142	// Set quenching mode 0 = no, 1 = AM, 2 = IL, 3 = NA, 4 = ACS
	143	virtual void SetQuench(Int_t flag = 0) {fQuench = flag;}
	144	// Set transport coefficient.
	145	void SetQhat(Float_t qhat) {fQhat = qhat;}
	146	//Set initial medium length.
	147	void SetLength(Float_t length) {fLength = length;}
	148
	149	virtual void SetHadronisation(Int_t flag = 1) {fHadronisation = flag;}
	150	virtual void SetPatchOmegaDalitz(Int_t flag = 1) {fPatchOmegaDalitz = flag;}
	151	virtual void SetReadFromFile(const Text_t *filname) {fkFileName = filname; fReadFromFile = 1;}
	152
	153	//
	154	// Pile-up
	155	//
	156	// Get interaction rate for pileup studies
	157	virtual void SetInteractionRate(Float_t rate,Float_t timewindow = 90.e-6);
	158	virtual Float_t GetInteractionRate() const {return fInteractionRate;}
	159	// get cross section of process
	160	virtual Float_t GetXsection() const {return fXsection;}
	161	// get triggered jets
	162	void GetJets(Int_t& njets, Int_t& ntrig, Float_t jets[4][10]);
	163	void RecJetsUA1(Int_t& njets, Float_t jets[4][50]);
	164	void SetPycellParameters(Float_t etamax = 2., Int_t neta = 274, Int_t nphi = 432,
	165	Float_t thresh = 0., Float_t etseed = 4.,
	166	Float_t minet = 10., Float_t r = 1.);
	167
	168	void LoadEvent(AliStack* stack, Int_t flag = 0, Int_t reHadr = 0);
	169	void LoadEvent(TObjArray* stack, Int_t flag = 0, Int_t reHadr = 0);
	170	// Getters
	171	virtual Process_t GetProcess() const {return fProcess;}
	172	virtual StrucFunc_t GetStrucFunc() const {return fStrucFunc;}
	173	virtual void GetPtHard(Float_t& ptmin, Float_t& ptmax) const
	174	{ptmin = fPtHardMin; ptmax = fPtHardMax;}
	175	virtual void GetNuclei(Int_t& a1, Int_t& a2) const
	176	{a1 = fAProjectile; a2 = fATarget;}
	177	virtual void GetJetEtRange(Float_t& etamin, Float_t& etamax) const
	178	{etamin = fEtaMinJet; etamax = fEtaMaxJet;}
	179	virtual void GetJetPhiRange(Float_t& phimin, Float_t& phimax) const
	180	{phimin = fPhiMinJet180./TMath::Pi(); phimax = fPhiMaxJet180/TMath::Pi();}
	181	virtual void GetGammaEtaRange(Float_t& etamin, Float_t& etamax) const
	182	{etamin = fEtaMinGamma; etamax = fEtaMaxGamma;}
	183	virtual void GetGammaPhiRange(Float_t& phimin, Float_t& phimax) const
	184	{phimin = fPhiMinGamma180./TMath::Pi(); phimax = fPhiMaxGamma180./TMath::Pi();}
	185	//
	186	Bool_t IsInEMCAL(Float_t phi, Float_t eta);
	187	Bool_t IsInPHOS(Float_t phi, Float_t eta);
	188	//
	189	virtual void FinishRun();
	190	Bool_t CheckTrigger(TParticle* jet1, TParticle* jet2);
	191	//Used in some processes to selected child properties
	192	Bool_t CheckKinematicsOnChild();
	193	void GetSubEventTime();
	194
	195	protected:
	196	// adjust the weight from kinematic cuts
	197	void AdjustWeights() const;
	198	Int_t GenerateMB();
	199	void MakeHeader();
	200	void GeneratePileup();
	201	Process_t fProcess; //Process type
	202	Int_t fItune; // Pythia tune > 6.4
	203	StrucFunc_t fStrucFunc; //Structure Function
	204	Float_t fKineBias; //!Bias from kinematic selection
	205	Int_t fTrials; //!Number of trials for current event
	206	Int_t fTrialsRun; //!Number of trials for run
	207	Float_t fQ; //Mean Q
	208	Float_t fX1; //Mean x1
	209	Float_t fX2; //Mean x2
	210	Float_t fEventTime; //Time of the subevent
	211	Float_t fInteractionRate; //Interaction rate (set by user)
	212	Float_t fTimeWindow; //Time window for pileup events (set by user)
	213	Int_t fCurSubEvent; //Index of the current sub-event
	214	TArrayF *fEventsTime; //Subevents time for pileup
	215	Int_t fNev; //Number of events
	216	Int_t fFlavorSelect; //Heavy Flavor Selection
	217	Float_t fXsection; //Cross-section
	218	AliPythia *fPythia; //!Pythia
	219	Float_t fPtHardMin; //lower pT-hard cut
	220	Float_t fPtHardMax; //higher pT-hard cut
	221	Float_t fYHardMin; //lower y-hard cut
	222	Float_t fYHardMax; //higher y-hard cut
	223	Int_t fGinit; //initial state gluon radiation
	224	Int_t fGfinal; //final state gluon radiation
	225	Int_t fHadronisation; //hadronisation
	226	Bool_t fPatchOmegaDalitz; //flag for omega dalitz decay patch
	227	Int_t fNpartons; //Number of partons before hadronisation
	228	Int_t fReadFromFile; //read partons from file
	229	Int_t fQuench; //Flag for quenching
	230	Float_t fQhat; //Transport coefficient (GeV^2/fm)
	231	Float_t fLength; //Medium length (fm)
	232	Float_t fImpact; //Impact parameter for quenching simulation (q-pythia)
	233	Float_t fPtKick; //Transverse momentum kick
	234	Bool_t fFullEvent; //!Write Full event if true
	235	AliDecayer *fDecayer; //!Pointer to the decayer instance
	236	Int_t fDebugEventFirst; //!First event to debug
	237	Int_t fDebugEventLast; //!Last event to debug
	238	Float_t fEtMinJet; //Minimum et of triggered Jet
	239	Float_t fEtMaxJet; //Maximum et of triggered Jet
	240	Float_t fEtaMinJet; //Minimum eta of triggered Jet
	241	Float_t fEtaMaxJet; //Maximum eta of triggered Jet
	242	Float_t fPhiMinJet; //Minimum phi of triggered Jet
	243	Float_t fPhiMaxJet; //Maximum phi of triggered Jet
	244	Int_t fJetReconstruction; //Jet Reconstruction mode
	245	Float_t fEtaMinGamma; // Minimum eta of triggered gamma
	246	Float_t fEtaMaxGamma; // Maximum eta of triggered gamma
	247	Float_t fPhiMinGamma; // Minimum phi of triggered gamma
	248	Float_t fPhiMaxGamma; // Maximum phi of triggered gamma
	249	Float_t fPycellEtaMax; // Max. eta for Pycell
	250	Int_t fPycellNEta; // Number of eta bins for Pycell
	251	Int_t fPycellNPhi; // Number of phi bins for Pycell
	252	Float_t fPycellThreshold; // Pycell threshold
	253	Float_t fPycellEtSeed; // Pycell seed
	254	Float_t fPycellMinEtJet; // Pycell min. jet et
	255	Float_t fPycellMaxRadius; // Pycell cone radius
	256	StackFillOpt_t fStackFillOpt; // Stack filling with all particles with
	257	// that flavour or only with selected
	258	// parents and their decays
	259	Bool_t fFeedDownOpt; // Option to set feed down from higher
	260	// quark families (e.g. b->c)
	261	Bool_t fFragmentation; // Option to activate fragmentation by Pythia
	262	Bool_t fSetNuclei; // Flag indicating that SetNuclei has been called
	263	Bool_t fNewMIS; // Flag for the new multipple interactions scenario
	264	Bool_t fHFoff; // Flag for switching heafy flavor production off
	265	Int_t fNucPdf; // Nuclear pdf 0: EKS98 1: EPS08
	266	Int_t fTriggerParticle; // Trigger on this particle ...
	267	Float_t fTriggerEta; // .. within \|eta\| < fTriggerEta
	268	Int_t fTriggerMultiplicity; // Trigger on events with a minimum charged multiplicity
	269	Float_t fTriggerMultiplicityEta; // in a given eta range
	270	Float_t fTriggerMultiplicityPtMin; // above this pT
	271	CountMode_t fCountMode; // Options for counting when the event will be finished.
	272	// fCountMode = kCountAll --> All particles that end up in the
	273	// stack are counted
	274	// fCountMode = kCountParents --> Only selected parents are counted
	275	// fCountMode = kCountTrackabless --> Only particles flagged for tracking
	276	// are counted
	277	//
	278	//
	279
	280	AliGenPythiaEventHeader* fHeader; //! Event header
	281	AliRunLoader* fRL; //! Run Loader
	282	const Text_t* fkFileName; //! Name of file to read from
	283
	284
	285	Bool_t fFragPhotonInCalo; // Option to ask for Fragmentation Photon in calorimeters acceptance
	286	Bool_t fPi0InCalo; // Option to ask for Pi0 in calorimeters acceptance
	287	Bool_t fPhotonInCalo; // Option to ask for Decay Photon in calorimeter acceptance
	288	Bool_t fEleInEMCAL; // Option to ask for Electron in EMCAL acceptance
	289	Bool_t fCheckEMCAL; // Option to ask for FragPhoton or Pi0 in calorimeters EMCAL acceptance
	290	Bool_t fCheckPHOS; // Option to ask for FragPhoton or Pi0 in calorimeters PHOS acceptance
	291	Bool_t fCheckPHOSeta; // Option to ask for PHOS eta acceptance
	292	Float_t fFragPhotonOrPi0MinPt; // Minimum momentum of Fragmentation Photon or Pi0
	293	Float_t fPhotonMinPt; // Minimum momentum of Photon
	294	Float_t fElectronMinPt; // Minimum momentum of Electron
	295	//Calorimeters eta-phi acceptance
	296	Float_t fPHOSMinPhi; // Minimum phi PHOS
	297	Float_t fPHOSMaxPhi; // Maximum phi PHOS
	298	Float_t fPHOSEta; // Minimum eta PHOS
	299	Float_t fEMCALMinPhi; // Minimum phi EMCAL
	300	Float_t fEMCALMaxPhi; // Maximum phi EMCAL
	301	Float_t fEMCALEta; // Maximum eta EMCAL
	302	private:
	303	AliGenPythia(const AliGenPythia &Pythia);
	304	AliGenPythia & operator=(const AliGenPythia & rhs);
	305
	306	ClassDef(AliGenPythia, 10) // AliGenerator interface to Pythia
	307	};
	308	#endif
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