[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 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);
    AliGenPythia(const AliGenPythia &Pythia);
    virtual ~AliGenPythia();
    virtual void    Generate();
    virtual void    Init();
    // set a cut on the Z coord. of the primary vertex (cm)
    //
    virtual void    SetEventListRange(Int_t eventFirst=-1, Int_t eventLast=-1);
    // select process type
    virtual void    SetProcess(Process_t proc = kPyCharm) {fProcess = proc;}
    // select structure function
    virtual void    SetStrucFunc(StrucFunc_t func = kGRVHO) {fStrucFunc = func;}
    // select pt of hard scattering 
    virtual void    SetPtHard(Float_t ptmin = 0, Float_t ptmax = 1.e10)
	{fPtHardMin = ptmin; fPtHardMax = ptmax; }
    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;}
    virtual void    SetPtKick(Float_t kt = 1.)
	{fPtKick = kt;}
    // set centre of mass energy
    virtual void    SetEnergyCMS(Float_t energy = 5500) {fEnergyCMS = energy;}
    // treat protons as inside nuclei
    virtual void    SetNuclei(Int_t a1, Int_t a2);
    virtual void    SetJetEtRange(Float_t etmin = 0., Float_t etmax = 1.e4)
	{fEtMinJet = etmin; fEtMaxJet = etmax;}
    virtual void    SetJetEtaRange(Float_t etamin = -20., Float_t etamax = 20.)
	{fEtaMinJet = etamin; fEtaMaxJet = etamax;}
    virtual void    SetJetReconstructionMode(Int_t mode = kCell) {fJetReconstruction = mode;}
    virtual void    SetJetPhiRange(Float_t phimin = 0., Float_t phimax = 360.)
	{fPhiMinJet = TMath::Pi()*phimin/180.; fPhiMaxJet = TMath::Pi()*phimax/180.;}
    virtual void    SetGammaEtaRange(Float_t etamin = -20., Float_t etamax = 20.)
	{fEtaMinGamma = etamin; fEtaMaxGamma = etamax;}
    virtual void    SetGammaPhiRange(Float_t phimin = 0., Float_t phimax = 360.)
	{fPhiMinGamma = TMath::Pi()*phimin/180.; fPhiMaxGamma = TMath::Pi()*phimax/180.;}
    // 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(const Bool_t opt) {
      fFragmentation = opt;
    }
    // Set counting mode
    virtual void SetCountMode(const CountMode_t mode) {
      fCountMode = mode;
    }
    
    // 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[4][10]);
    void RecJetsUA1(Float_t eCellMin, Float_t eCellSeed, Float_t eMin, Float_t rMin, 
		    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();
    // Getters
    virtual Process_t    GetProcess() {return fProcess;}
    virtual StrucFunc_t  GetStrucFunc() {return fStrucFunc;}
    virtual void         GetPtHard(Float_t& ptmin, Float_t& ptmax)
	{ptmin = fPtHardMin; ptmax = fPtHardMax = ptmax;}
    virtual Float_t      GetEnergyCMS() {return fEnergyCMS;}
    virtual void         GetNuclei(Int_t&  a1, Int_t& a2)
	{a1 = fAProjectile; a2 = fATarget;}
    virtual void         GetJetEtRange(Float_t& etamin, Float_t& etamax)
	{etamin = fEtaMinJet; etamax = fEtaMaxJet;}
    virtual void         GetJetPhiRange(Float_t& phimin, Float_t& phimax)
	{phimin = fPhiMinJet*180./TMath::Pi(); phimax = fPhiMaxJet*180/TMath::Pi();}
    virtual void         GetGammaEtaRange(Float_t& etamin, Float_t& etamax)
	{etamin = fEtaMinGamma; etamax = fEtaMaxGamma;}
    virtual void         GetGammaPhiRange(Float_t& phimin, Float_t& phimax)
	{phimin = fPhiMinGamma*180./TMath::Pi(); phimax = fPhiMaxGamma*180./TMath::Pi();}
    //
    virtual void FinishRun();
    Bool_t CheckTrigger(TParticle* jet1, TParticle* jet2);
    
    // Assignment Operator
    AliGenPythia & operator=(const AliGenPythia & rhs);
 protected:
    // adjust the weight from kinematic cuts
    void   AdjustWeights();
    Int_t  GenerateMB();
    void   MakeHeader();    

    
    Process_t   fProcess;           //Process type
    StrucFunc_t fStrucFunc;         //Structure Function
    Float_t     fEnergyCMS;         //Centre of mass energy
    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
    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
    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
    //

    CountMode_t fCountMode;         // Options for counting when the event will be finished.
    AliGenPythiaEventHeader* fHeader; //! Event header
     
    // 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
    //
    ClassDef(AliGenPythia,5) // AliGenerator interface to Pythia
};
#endif
Commit	Line	Data
8d2cd130	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	/* $Id$ */
	7
	8	//
	9	// Generator using the TPythia interface (via AliPythia)
	10	// to generate pp collisions.
	11	// Using SetNuclei() also nuclear modifications to the structure functions
	12	// can be taken into account. This makes, of course, only sense for the
	13	// generation of the products of hard processes (heavy flavor, jets ...)
	14	//
	15	// andreas.morsch@cern.ch
	16	//
	17
	18	#include "AliGenMC.h"
	19	#include "AliPythia.h"
	20
	21	class AliPythia;
	22	class TParticle;
e5c87a3d	23	class AliGenPythiaEventHeader;
8d2cd130	24
	25	class AliGenPythia : public AliGenMC
	26	{
	27	public:
	28
	29	typedef enum {kFlavorSelection, kParentSelection} StackFillOpt_t;
	30	typedef enum {kCountAll, kCountParents, kCountTrackables} CountMode_t;
	31	typedef enum {kCluster, kCell} JetRecMode_t;
	32
	33	AliGenPythia();
	34	AliGenPythia(Int_t npart);
	35	AliGenPythia(const AliGenPythia &Pythia);
	36	virtual ~AliGenPythia();
	37	virtual void Generate();
	38	virtual void Init();
	39	// set a cut on the Z coord. of the primary vertex (cm)
	40	//
	41	virtual void SetEventListRange(Int_t eventFirst=-1, Int_t eventLast=-1);
	42	// select process type
	43	virtual void SetProcess(Process_t proc = kPyCharm) {fProcess = proc;}
	44	// select structure function
	45	virtual void SetStrucFunc(StrucFunc_t func = kGRVHO) {fStrucFunc = func;}
	46	// select pt of hard scattering
	47	virtual void SetPtHard(Float_t ptmin = 0, Float_t ptmax = 1.e10)
	48	{fPtHardMin = ptmin; fPtHardMax = ptmax; }
	49	virtual void SetYHard(Float_t ymin = -1.e10, Float_t ymax = 1.e10)
	50	{fYHardMin = ymin; fYHardMax = ymax; }
	51	// Set initial and final state gluon radiation
	52	virtual void SetGluonRadiation(Int_t iIn, Int_t iFin)
	53	{fGinit = iIn; fGfinal = iFin;}
	54	virtual void SetPtKick(Float_t kt = 1.)
	55	{fPtKick = kt;}
	56	// set centre of mass energy
	57	virtual void SetEnergyCMS(Float_t energy = 5500) {fEnergyCMS = energy;}
	58	// treat protons as inside nuclei
	59	virtual void SetNuclei(Int_t a1, Int_t a2);
	60	virtual void SetJetEtRange(Float_t etmin = 0., Float_t etmax = 1.e4)
	61	{fEtMinJet = etmin; fEtMaxJet = etmax;}
	62	virtual void SetJetEtaRange(Float_t etamin = -20., Float_t etamax = 20.)
	63	{fEtaMinJet = etamin; fEtaMaxJet = etamax;}
	64	virtual void SetJetReconstructionMode(Int_t mode = kCell) {fJetReconstruction = mode;}
	65	virtual void SetJetPhiRange(Float_t phimin = 0., Float_t phimax = 360.)
	66	{fPhiMinJet = TMath::Pi()phimin/180.; fPhiMaxJet = TMath::Pi()phimax/180.;}
	67	virtual void SetGammaEtaRange(Float_t etamin = -20., Float_t etamax = 20.)
	68	{fEtaMinGamma = etamin; fEtaMaxGamma = etamax;}
	69	virtual void SetGammaPhiRange(Float_t phimin = 0., Float_t phimax = 360.)
	70	{fPhiMinGamma = TMath::Pi()phimin/180.; fPhiMaxGamma = TMath::Pi()phimax/180.;}
	71	// Set option for feed down from higher family
	72	virtual void SetFeedDownHigherFamily(Bool_t opt) {
	73	fFeedDownOpt = opt;
	74	}
	75	// Set option for selecting particles kept in stack according to flavor
	76	// or to parent selection
	77	virtual void SetStackFillOpt(StackFillOpt_t opt) {
	78	fStackFillOpt = opt;
	79	}
	80	// Set fragmentation option
	81	virtual void SetFragmentation(const Bool_t opt) {
	82	fFragmentation = opt;
	83	}
	84	// Set counting mode
	85	virtual void SetCountMode(const CountMode_t mode) {
	86	fCountMode = mode;
	87	}
88
89	// get cross section of process
90	virtual Float_t GetXsection() const {return fXsection;}
91	// get triggered jets
92	void GetJets(Int_t& njets, Int_t& ntrig, Float_t[4][10]);
93	void RecJetsUA1(Float_t eCellMin, Float_t eCellSeed, Float_t eMin, Float_t rMin,
592f8307	94	Int_t& njets, Float_t jets[4][50]);
	95	void SetPycellParameters(Float_t etamax = 2., Int_t neta = 274, Int_t nphi = 432,
	96	Float_t thresh = 0., Float_t etseed = 4.,
	97	Float_t minet = 10., Float_t r = 1.);
	98
8d2cd130	99	void LoadEvent();
	100	// Getters
	101	virtual Process_t GetProcess() {return fProcess;}
	102	virtual StrucFunc_t GetStrucFunc() {return fStrucFunc;}
	103	virtual void GetPtHard(Float_t& ptmin, Float_t& ptmax)
	104	{ptmin = fPtHardMin; ptmax = fPtHardMax = ptmax;}
	105	virtual Float_t GetEnergyCMS() {return fEnergyCMS;}
	106	virtual void GetNuclei(Int_t& a1, Int_t& a2)
1a626d4e	107	{a1 = fAProjectile; a2 = fATarget;}
8d2cd130	108	virtual void GetJetEtRange(Float_t& etamin, Float_t& etamax)
	109	{etamin = fEtaMinJet; etamax = fEtaMaxJet;}
	110	virtual void GetJetPhiRange(Float_t& phimin, Float_t& phimax)
	111	{phimin = fPhiMinJet180./TMath::Pi(); phimax = fPhiMaxJet180/TMath::Pi();}
	112	virtual void GetGammaEtaRange(Float_t& etamin, Float_t& etamax)
	113	{etamin = fEtaMinGamma; etamax = fEtaMaxGamma;}
	114	virtual void GetGammaPhiRange(Float_t& phimin, Float_t& phimax)
	115	{phimin = fPhiMinGamma180./TMath::Pi(); phimax = fPhiMaxGamma180./TMath::Pi();}
	116	//
	117	virtual void FinishRun();
	118	Bool_t CheckTrigger(TParticle* jet1, TParticle* jet2);
	119
	120	// Assignment Operator
	121	AliGenPythia & operator=(const AliGenPythia & rhs);
	122	protected:
	123	// adjust the weight from kinematic cuts
	124	void AdjustWeights();
	125	Int_t GenerateMB();
	126	void MakeHeader();
	127
8d2cd130	128
	129	Process_t fProcess; //Process type
	130	StrucFunc_t fStrucFunc; //Structure Function
	131	Float_t fEnergyCMS; //Centre of mass energy
	132	Float_t fKineBias; //!Bias from kinematic selection
	133	Int_t fTrials; //!Number of trials for current event
	134	Int_t fTrialsRun; //!Number of trials for run
	135	Float_t fQ; //Mean Q
	136	Float_t fX1; //Mean x1
	137	Float_t fX2; //Mean x2
	138	Int_t fNev; //Number of events
	139	Int_t fFlavorSelect; //Heavy Flavor Selection
	140	Float_t fXsection; //Cross-section
	141	AliPythia *fPythia; //!Pythia
	142	Float_t fPtHardMin; //lower pT-hard cut
	143	Float_t fPtHardMax; //higher pT-hard cut
	144	Float_t fYHardMin; //lower y-hard cut
	145	Float_t fYHardMax; //higher y-hard cut
8d2cd130	146	Int_t fGinit; //initial state gluon radiation
	147	Int_t fGfinal; //final state gluon radiation
	148	Float_t fPtKick; //Transverse momentum kick
	149	Bool_t fFullEvent; //!Write Full event if true
	150	AliDecayer *fDecayer; //!Pointer to the decayer instance
	151	Int_t fDebugEventFirst; //!First event to debug
	152	Int_t fDebugEventLast; //!Last event to debug
	153	Float_t fEtMinJet; //Minimum et of triggered Jet
	154	Float_t fEtMaxJet; //Maximum et of triggered Jet
	155	Float_t fEtaMinJet; //Minimum eta of triggered Jet
	156	Float_t fEtaMaxJet; //Maximum eta of triggered Jet
	157	Float_t fPhiMinJet; //Minimum phi of triggered Jet
	158	Float_t fPhiMaxJet; //Maximum phi of triggered Jet
	159	Int_t fJetReconstruction; //Jet Reconstruction mode
	160	Float_t fEtaMinGamma; // Minimum eta of triggered gamma
	161	Float_t fEtaMaxGamma; // Maximum eta of triggered gamma
	162	Float_t fPhiMinGamma; // Minimum phi of triggered gamma
	163	Float_t fPhiMaxGamma; // Maximum phi of triggered gamma
592f8307	164	Float_t fPycellEtaMax; // Max. eta for Pycell
	165	Int_t fPycellNEta; // Number of eta bins for Pycell
	166	Int_t fPycellNPhi; // Number of phi bins for Pycell
	167	Float_t fPycellThreshold; // Pycell threshold
	168	Float_t fPycellEtSeed; // Pycell seed
	169	Float_t fPycellMinEtJet; // Pycell min. jet et
	170	Float_t fPycellMaxRadius; // Pycell cone radius
8d2cd130	171	StackFillOpt_t fStackFillOpt; // Stack filling with all particles with
	172	// that flavour or only with selected
	173	// parents and their decays
	174	Bool_t fFeedDownOpt; // Option to set feed down from higher
	175	// quark families (e.g. b->c)
	176	Bool_t fFragmentation; // Option to activate fragmentation by Pythia
1d568bc2	177	Bool_t fSetNuclei; // Flag indicating that SetNuclei has been called
8d2cd130	178	//
	179
	180	CountMode_t fCountMode; // Options for counting when the event will be finished.
e5c87a3d	181	AliGenPythiaEventHeader* fHeader; //! Event header
e5c87a3d	182
8d2cd130	183	// fCountMode = kCountAll --> All particles that end up in the
	184	// stack are counted
	185	// fCountMode = kCountParents --> Only selected parents are counted
	186	// fCountMode = kCountTrackabless --> Only particles flagged for tracking
	187	// are counted
	188	//
e5c87a3d	189	ClassDef(AliGenPythia,5) // AliGenerator interface to Pythia
8d2cd130	190	};
	191	#endif
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