[u/mrichter/AliRoot.git] / THijing / AliGenHijing.h

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

/* $Id$ */

// Generator using HIJING as an external generator
// The main HIJING options are accessable for the user through this interface.
// andreas.morsch@cern.ch

#include "AliGenMC.h"
#include <TString.h>

class THijing;
class TParticle;
class TClonesArray;
class TGraph;

class AliGenHijing : public AliGenMC
{
    enum {kNoTrigger, kHardProcesses, kDirectPhotons};

 public:
    AliGenHijing();
    AliGenHijing(Int_t npart);
    AliGenHijing(const AliGenHijing &Hijing);
    virtual ~AliGenHijing();
    virtual void    Generate();
    virtual void    Init();
    // set centre of mass energy
    virtual void    SetEnergyCMS(Float_t energy=5500) {fEnergyCMS=energy;}
    virtual void    SetReferenceFrame(TString frame="CMS")
	{fFrame=frame;}

    virtual void    SetImpactParameterRange(Float_t bmin = 0, Float_t bmax = 15.)
	{fMinImpactParam=bmin; fMaxImpactParam=bmax;}
    virtual void    KeepFullEvent();
    virtual void    SetJetQuenching(Int_t flag=1)     {fQuench     = flag;}
    virtual void    SetShadowing(Int_t flag=1)        {fShadowing  = flag;}
    virtual void    SetDecaysOff(Int_t flag=1)        {fDecaysOff  = flag;}
    virtual void    SetTrigger(Int_t flag=kNoTrigger) {fTrigger    = flag;}
    virtual void    SetFlavor(Int_t flag=0)           {fFlavor     = flag;}
    virtual void    SetEvaluate(Int_t flag=0)         {fEvaluate   = flag;}
    virtual void    SetSelectAll(Int_t flag=0)        {fSelectAll  = flag;}
    virtual void    SetRadiation(Int_t flag=3)        {fRadiation  = flag;}    
    virtual void    SetSpectators(Int_t spects=1)     {fSpectators = spects;}
    virtual void    SetPtJet(Float_t ptmin)           {fPtMinJet   = ptmin;}
    virtual void    SetSimpleJets(Int_t flag=0)       {fSimpleJet  = flag;}
    virtual void    SetNoGammas(Int_t flag=0)         {fNoGammas   = flag;}
	    
    virtual void    SetJetEtaRange(Float_t etamin = -20., Float_t etamax = 20.)
	{fEtaMinJet = etamin; fEtaMaxJet = etamax;}
    virtual void    SetJetPhiRange(Float_t phimin = -180., Float_t phimax = 180.)
	{fPhiMinJet = TMath::Pi()*phimin/180.; fPhiMaxJet = TMath::Pi()*phimax/180.;}
    virtual void    SetBoostLHC(Int_t flag = 0)         {fLHC        = flag;}
// Getters
    virtual Float_t GetEnergyCMS()       const {return fEnergyCMS;}
    virtual TString GetReferenceFrame()  const {return fFrame;}
    virtual void    GetProjectile(TString& tar, Int_t& a, Int_t& z)       const
	{tar = fProjectile; a = fAProjectile; z = fZProjectile;}    
    virtual void    GetTarget(TString& tar, Int_t& a, Int_t& z)           const
	{tar = fTarget; a = fATarget; z = fZTarget;}    
    virtual void    GetImpactParameterRange(Float_t& bmin, Float_t& bmax) const
	{bmin = fMinImpactParam; bmax = fMaxImpactParam;}
    virtual Int_t   GetJetQuenching()                    const {return fQuench;}
    virtual Int_t   GetShadowing()                       const {return fShadowing;}
    virtual Int_t   GetTrigger()                         const {return fTrigger;}
    virtual Int_t   GetFlavor()                          const {return fFlavor;}
    virtual Int_t   GetRadiation()                       const {return fRadiation;}    
    virtual Int_t   GetSpectators()                      const {return fSpectators;}
    virtual Float_t GetPtJet()                           const {return fPtMinJet;}
    virtual void    GetJetEtaRange(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();}
    

// Physics Routines
    virtual Bool_t  ProvidesCollisionGeometry() const {return kTRUE;}
    virtual void    EvaluateCrossSections();
    virtual TGraph* CrossSection()     {return fDsigmaDb;}
    virtual TGraph* BinaryCollisions() {return fDnDb;}
    virtual Bool_t  CheckTrigger();
//
    AliGenHijing &  operator=(const AliGenHijing & rhs);
 protected:
    Bool_t SelectFlavor(Int_t pid);
    void   MakeHeader();
 protected:
    TString     fFrame;          // Reference frame 
    Float_t     fMinImpactParam; // minimum impact parameter
    Float_t     fMaxImpactParam; // maximum impact parameter	
    Int_t       fKeep;           // Flag to keep full event information
    Int_t       fQuench;         // Flag to switch on jet quenching
    Int_t       fShadowing;      // Flag to switch on nuclear effects on parton distribution function
    Int_t       fDecaysOff;      // Flag to turn off decays of pi0, K_s, D, Lambda, sigma
    Int_t       fTrigger;        // Trigger type
    Int_t       fEvaluate;       // Evaluate total and partial cross-sections
    Int_t       fSelectAll;      // Flag to write the full event
    Int_t       fFlavor;         // Selected particle flavor 4: charm+beauty 5: beauty
    Float_t     fEnergyCMS;      // Centre of mass energy
    Float_t     fKineBias;       // Bias from kinematic selection
    Int_t       fTrials;         // Number of trials
    Float_t     fXsection;       // Cross-section
    THijing    *fHijing;         //!Hijing
    Float_t     fPtHardMin;      // lower pT-hard cut 
    Float_t     fPtHardMax;      // higher pT-hard cut
    Int_t       fSpectators;     // put spectators on stack
    TGraph*     fDsigmaDb;       // dSigma/db for the system
    TGraph*     fDnDb;           // dNBinaryCollisions/db
    Float_t     fPtMinJet;       // Minimum Pt of triggered Jet
    Float_t     fEtaMinJet;      // Minimum eta of triggered Jet
    Float_t     fEtaMaxJet;      // Maximum eta of triggered Jet
    Float_t     fPhiMinJet;      // At least one of triggered Jets must be in this
    Float_t     fPhiMaxJet;      // phi range
    Int_t       fRadiation;      // Flag to switch on/off initial and final state radiation
    Int_t       fSimpleJet;      // Flag to produce simple tiggered jet topology
    Int_t       fNoGammas;       // Don't write gammas if flag "on"
    
// ZDC proposal (by Chiara) to store num. of SPECTATORS protons and neutrons
    Int_t 	fProjectileSpecn;// Num. of spectator neutrons from projectile nucleus
    Int_t 	fProjectileSpecp;// Num. of spectator protons from projectile nucleus
    Int_t 	fTargetSpecn;	 // Num. of spectator neutrons from target nucleus
    Int_t 	fTargetSpecp;	 // Num. of spectator protons from target nucleus
    Int_t       fLHC;            // Assume LHC as lab frame
 private:
    void Copy(TObject &rhs) const;
    // adjust the weight from kinematic cuts
    void   AdjustWeights();
    // check seleted daughters
    Bool_t DaughtersSelection(TParticle* iparticle);
    // check if stable
    Bool_t Stable(TParticle*  particle) const;
    
    ClassDef(AliGenHijing, 6) // AliGenerator interface to Hijing
};
#endif
Commit	Line	Data
36b81802	1	#ifndef ALIGENHIJING_H
	2	#define ALIGENHIJING_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	// Generator using HIJING as an external generator
	9	// The main HIJING options are accessable for the user through this interface.
	10	// andreas.morsch@cern.ch
	11
	12	#include "AliGenMC.h"
	13	#include <TString.h>
36b81802	14
36b81802	15	class THijing;
36b81802	16	class TParticle;
	17	class TClonesArray;
	18	class TGraph;
	19
	20	class AliGenHijing : public AliGenMC
	21	{
	22	enum {kNoTrigger, kHardProcesses, kDirectPhotons};
	23
	24	public:
	25	AliGenHijing();
	26	AliGenHijing(Int_t npart);
	27	AliGenHijing(const AliGenHijing &Hijing);
	28	virtual ~AliGenHijing();
	29	virtual void Generate();
	30	virtual void Init();
	31	// set centre of mass energy
	32	virtual void SetEnergyCMS(Float_t energy=5500) {fEnergyCMS=energy;}
	33	virtual void SetReferenceFrame(TString frame="CMS")
	34	{fFrame=frame;}
0c85382f	35
36b81802	36	virtual void SetImpactParameterRange(Float_t bmin = 0, Float_t bmax = 15.)
	37	{fMinImpactParam=bmin; fMaxImpactParam=bmax;}
	38	virtual void KeepFullEvent();
	39	virtual void SetJetQuenching(Int_t flag=1) {fQuench = flag;}
	40	virtual void SetShadowing(Int_t flag=1) {fShadowing = flag;}
	41	virtual void SetDecaysOff(Int_t flag=1) {fDecaysOff = flag;}
	42	virtual void SetTrigger(Int_t flag=kNoTrigger) {fTrigger = flag;}
	43	virtual void SetFlavor(Int_t flag=0) {fFlavor = flag;}
	44	virtual void SetEvaluate(Int_t flag=0) {fEvaluate = flag;}
	45	virtual void SetSelectAll(Int_t flag=0) {fSelectAll = flag;}
	46	virtual void SetRadiation(Int_t flag=3) {fRadiation = flag;}
	47	virtual void SetSpectators(Int_t spects=1) {fSpectators = spects;}
	48	virtual void SetPtJet(Float_t ptmin) {fPtMinJet = ptmin;}
	49	virtual void SetSimpleJets(Int_t flag=0) {fSimpleJet = flag;}
	50	virtual void SetNoGammas(Int_t flag=0) {fNoGammas = flag;}
	51
	52	virtual void SetJetEtaRange(Float_t etamin = -20., Float_t etamax = 20.)
	53	{fEtaMinJet = etamin; fEtaMaxJet = etamax;}
	54	virtual void SetJetPhiRange(Float_t phimin = -180., Float_t phimax = 180.)
	55	{fPhiMinJet = TMath::Pi()phimin/180.; fPhiMaxJet = TMath::Pi()phimax/180.;}
	56	virtual void SetBoostLHC(Int_t flag = 0) {fLHC = flag;}
	57	// Getters
14cae7e9	58	virtual Float_t GetEnergyCMS() const {return fEnergyCMS;}
	59	virtual TString GetReferenceFrame() const {return fFrame;}
	60	virtual void GetProjectile(TString& tar, Int_t& a, Int_t& z) const
36b81802	61	{tar = fProjectile; a = fAProjectile; z = fZProjectile;}
14cae7e9	62	virtual void GetTarget(TString& tar, Int_t& a, Int_t& z) const
36b81802	63	{tar = fTarget; a = fATarget; z = fZTarget;}
14cae7e9	64	virtual void GetImpactParameterRange(Float_t& bmin, Float_t& bmax) const
36b81802	65	{bmin = fMinImpactParam; bmax = fMaxImpactParam;}
14cae7e9	66	virtual Int_t GetJetQuenching() const {return fQuench;}
	67	virtual Int_t GetShadowing() const {return fShadowing;}
	68	virtual Int_t GetTrigger() const {return fTrigger;}
	69	virtual Int_t GetFlavor() const {return fFlavor;}
	70	virtual Int_t GetRadiation() const {return fRadiation;}
	71	virtual Int_t GetSpectators() const {return fSpectators;}
	72	virtual Float_t GetPtJet() const {return fPtMinJet;}
	73	virtual void GetJetEtaRange(Float_t& etamin, Float_t& etamax) const
36b81802	74	{etamin = fEtaMinJet; etamax = fEtaMaxJet;}
14cae7e9	75	virtual void GetJetPhiRange(Float_t& phimin, Float_t& phimax) const
36b81802	76	{phimin = fPhiMinJet180./TMath::Pi(); phimax = fPhiMaxJet180./TMath::Pi();}
	77
	78
	79	// Physics Routines
14cae7e9	80	virtual Bool_t ProvidesCollisionGeometry() const {return kTRUE;}
14cae7e9	81	virtual void EvaluateCrossSections();
36b81802	82	virtual TGraph* CrossSection() {return fDsigmaDb;}
	83	virtual TGraph* BinaryCollisions() {return fDnDb;}
	84	virtual Bool_t CheckTrigger();
	85	//
	86	AliGenHijing & operator=(const AliGenHijing & rhs);
	87	protected:
	88	Bool_t SelectFlavor(Int_t pid);
	89	void MakeHeader();
36b81802	90	protected:
14cae7e9	91	TString fFrame; // Reference frame
36b81802	92	Float_t fMinImpactParam; // minimum impact parameter
	93	Float_t fMaxImpactParam; // maximum impact parameter
	94	Int_t fKeep; // Flag to keep full event information
	95	Int_t fQuench; // Flag to switch on jet quenching
	96	Int_t fShadowing; // Flag to switch on nuclear effects on parton distribution function
	97	Int_t fDecaysOff; // Flag to turn off decays of pi0, K_s, D, Lambda, sigma
	98	Int_t fTrigger; // Trigger type
	99	Int_t fEvaluate; // Evaluate total and partial cross-sections
	100	Int_t fSelectAll; // Flag to write the full event
	101	Int_t fFlavor; // Selected particle flavor 4: charm+beauty 5: beauty
	102	Float_t fEnergyCMS; // Centre of mass energy
	103	Float_t fKineBias; // Bias from kinematic selection
	104	Int_t fTrials; // Number of trials
36b81802	105	Float_t fXsection; // Cross-section
b88f5cea	106	THijing *fHijing; //!Hijing
36b81802	107	Float_t fPtHardMin; // lower pT-hard cut
	108	Float_t fPtHardMax; // higher pT-hard cut
	109	Int_t fSpectators; // put spectators on stack
	110	TGraph* fDsigmaDb; // dSigma/db for the system
	111	TGraph* fDnDb; // dNBinaryCollisions/db
	112	Float_t fPtMinJet; // Minimum Pt of triggered Jet
	113	Float_t fEtaMinJet; // Minimum eta of triggered Jet
	114	Float_t fEtaMaxJet; // Maximum eta of triggered Jet
	115	Float_t fPhiMinJet; // At least one of triggered Jets must be in this
	116	Float_t fPhiMaxJet; // phi range
	117	Int_t fRadiation; // Flag to switch on/off initial and final state radiation
	118	Int_t fSimpleJet; // Flag to produce simple tiggered jet topology
	119	Int_t fNoGammas; // Don't write gammas if flag "on"
	120
	121	// ZDC proposal (by Chiara) to store num. of SPECTATORS protons and neutrons
f0c86dd6	122	Int_t fProjectileSpecn;// Num. of spectator neutrons from projectile nucleus
	123	Int_t fProjectileSpecp;// Num. of spectator protons from projectile nucleus
	124	Int_t fTargetSpecn; // Num. of spectator neutrons from target nucleus
	125	Int_t fTargetSpecp; // Num. of spectator protons from target nucleus
36b81802	126	Int_t fLHC; // Assume LHC as lab frame
36b81802	127	private:
14cae7e9	128	void Copy(TObject &rhs) const;
36b81802	129	// adjust the weight from kinematic cuts
	130	void AdjustWeights();
	131	// check seleted daughters
	132	Bool_t DaughtersSelection(TParticle* iparticle);
	133	// check if stable
14cae7e9	134	Bool_t Stable(TParticle* particle) const;
36b81802	135
e5fefabc	136	ClassDef(AliGenHijing, 6) // AliGenerator interface to Hijing
36b81802	137	};
	138	#endif
	139
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