[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 "AliGenHijingEventHeader.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);
    virtual ~AliGenHijing();
    virtual void    Generate();
    virtual void    Init();
    virtual void    SetSeed(UInt_t seed);
    // 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    SetPtHardMin(Float_t ptmin)       {fPtHardMin  = ptmin;}
    virtual void    SetPtHardMax(Float_t ptmax)       {fPtHardMax  = ptmax;}
    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;}
    virtual void    SetRandomPz(Bool_t flag = 0)      {fRandomPz   = flag;}
    virtual void    SwitchOffHeavyQuarks(Bool_t flag = kTRUE) {fNoHeavyQuarks = flag;}
    virtual void    SetSigmaNN(Float_t val)           {fSigmaNN    = val;}    
    virtual void    SetNoElas(Bool_t b)               {fNoElas     = b; }	    

// Getters
    virtual TString GetReferenceFrame()  const {return fFrame;}
    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 GetPtHardMin()                       const {return fPtHardMin;}
    virtual Float_t GetPtHardMax()                       const {return fPtHardMax;}
    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();}
     THijing       *GetTHijing()                         const {return fHijing;}
    virtual Float_t GetSigmaNN()                         const {return fSigmaNN;}

// 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();
//
 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     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
    Bool_t      fRandomPz;       // Randomise sign of pz  event by event
    Bool_t      fNoHeavyQuarks;  // If true no heavy quarks are produced
    AliGenHijingEventHeader     fHeader; // MC Header
    Float_t     fSigmaNN;        // If not -1 set sigmaNN (HIPR1) 
    Bool_t      fNoElas;         // If true switch off elastic scattering

 private:
    AliGenHijing(const AliGenHijing &Hijing);
    AliGenHijing &  operator=(const AliGenHijing & rhs);

    // adjust the weight from kinematic cuts
    void   AdjustWeights();
    // check seleted daughters
    Bool_t DaughtersSelection(const TParticle* iparticle);
    // check if stable
    Bool_t Stable(const TParticle*  particle) const;
    
    ClassDef(AliGenHijing, 9) // 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"
f2f240a9	13	#include "AliGenHijingEventHeader.h"
36b81802	14	#include <TString.h>
36b81802	15
36b81802	16	class THijing;
36b81802	17	class TParticle;
	18	class TClonesArray;
	19	class TGraph;
f2f240a9	20
36b81802	21
	22	class AliGenHijing : public AliGenMC
	23	{
	24	enum {kNoTrigger, kHardProcesses, kDirectPhotons};
	25
	26	public:
	27	AliGenHijing();
	28	AliGenHijing(Int_t npart);
36b81802	29	virtual ~AliGenHijing();
	30	virtual void Generate();
	31	virtual void Init();
1f6c58c1	32	virtual void SetSeed(UInt_t seed);
36b81802	33	// set centre of mass energy
	34	virtual void SetEnergyCMS(Float_t energy=5500) {fEnergyCMS=energy;}
	35	virtual void SetReferenceFrame(TString frame="CMS")
	36	{fFrame=frame;}
0c85382f	37
36b81802	38	virtual void SetImpactParameterRange(Float_t bmin = 0, Float_t bmax = 15.)
	39	{fMinImpactParam=bmin; fMaxImpactParam=bmax;}
	40	virtual void KeepFullEvent();
	41	virtual void SetJetQuenching(Int_t flag=1) {fQuench = flag;}
	42	virtual void SetShadowing(Int_t flag=1) {fShadowing = flag;}
	43	virtual void SetDecaysOff(Int_t flag=1) {fDecaysOff = flag;}
	44	virtual void SetTrigger(Int_t flag=kNoTrigger) {fTrigger = flag;}
	45	virtual void SetFlavor(Int_t flag=0) {fFlavor = flag;}
	46	virtual void SetEvaluate(Int_t flag=0) {fEvaluate = flag;}
	47	virtual void SetSelectAll(Int_t flag=0) {fSelectAll = flag;}
	48	virtual void SetRadiation(Int_t flag=3) {fRadiation = flag;}
	49	virtual void SetSpectators(Int_t spects=1) {fSpectators = spects;}
5bfd0cb7	50	virtual void SetPtHardMin(Float_t ptmin) {fPtHardMin = ptmin;}
5bfd0cb7	51	virtual void SetPtHardMax(Float_t ptmax) {fPtHardMax = ptmax;}
36b81802	52	virtual void SetPtJet(Float_t ptmin) {fPtMinJet = ptmin;}
	53	virtual void SetSimpleJets(Int_t flag=0) {fSimpleJet = flag;}
	54	virtual void SetNoGammas(Int_t flag=0) {fNoGammas = flag;}
	55
	56	virtual void SetJetEtaRange(Float_t etamin = -20., Float_t etamax = 20.)
	57	{fEtaMinJet = etamin; fEtaMaxJet = etamax;}
	58	virtual void SetJetPhiRange(Float_t phimin = -180., Float_t phimax = 180.)
	59	{fPhiMinJet = TMath::Pi()phimin/180.; fPhiMaxJet = TMath::Pi()phimax/180.;}
7dd84b41	60	virtual void SetBoostLHC(Int_t flag = 0) {fLHC = flag;}
7dd84b41	61	virtual void SetRandomPz(Bool_t flag = 0) {fRandomPz = flag;}
f82795ff	62	virtual void SwitchOffHeavyQuarks(Bool_t flag = kTRUE) {fNoHeavyQuarks = flag;}
7dd84b41	63	virtual void SetSigmaNN(Float_t val) {fSigmaNN = val;}
	64	virtual void SetNoElas(Bool_t b) {fNoElas = b; }
	65
36b81802	66	// Getters
14cae7e9	67	virtual TString GetReferenceFrame() const {return fFrame;}
14cae7e9	68	virtual void GetImpactParameterRange(Float_t& bmin, Float_t& bmax) const
36b81802	69	{bmin = fMinImpactParam; bmax = fMaxImpactParam;}
14cae7e9	70	virtual Int_t GetJetQuenching() const {return fQuench;}
	71	virtual Int_t GetShadowing() const {return fShadowing;}
	72	virtual Int_t GetTrigger() const {return fTrigger;}
	73	virtual Int_t GetFlavor() const {return fFlavor;}
	74	virtual Int_t GetRadiation() const {return fRadiation;}
	75	virtual Int_t GetSpectators() const {return fSpectators;}
5bfd0cb7	76	virtual Float_t GetPtHardMin() const {return fPtHardMin;}
5bfd0cb7	77	virtual Float_t GetPtHardMax() const {return fPtHardMax;}
14cae7e9	78	virtual Float_t GetPtJet() const {return fPtMinJet;}
14cae7e9	79	virtual void GetJetEtaRange(Float_t& etamin, Float_t& etamax) const
36b81802	80	{etamin = fEtaMinJet; etamax = fEtaMaxJet;}
14cae7e9	81	virtual void GetJetPhiRange(Float_t& phimin, Float_t& phimax) const
36b81802	82	{phimin = fPhiMinJet180./TMath::Pi(); phimax = fPhiMaxJet180./TMath::Pi();}
cfccaf66	83	THijing *GetTHijing() const {return fHijing;}
7dd84b41	84	virtual Float_t GetSigmaNN() const {return fSigmaNN;}
36b81802	85
36b81802	86	// Physics Routines
14cae7e9	87	virtual Bool_t ProvidesCollisionGeometry() const {return kTRUE;}
14cae7e9	88	virtual void EvaluateCrossSections();
36b81802	89	virtual TGraph* CrossSection() {return fDsigmaDb;}
	90	virtual TGraph* BinaryCollisions() {return fDnDb;}
	91	virtual Bool_t CheckTrigger();
	92	//
36b81802	93	protected:
	94	Bool_t SelectFlavor(Int_t pid);
	95	void MakeHeader();
36b81802	96	protected:
14cae7e9	97	TString fFrame; // Reference frame
36b81802	98	Float_t fMinImpactParam; // minimum impact parameter
	99	Float_t fMaxImpactParam; // maximum impact parameter
	100	Int_t fKeep; // Flag to keep full event information
	101	Int_t fQuench; // Flag to switch on jet quenching
	102	Int_t fShadowing; // Flag to switch on nuclear effects on parton distribution function
	103	Int_t fDecaysOff; // Flag to turn off decays of pi0, K_s, D, Lambda, sigma
	104	Int_t fTrigger; // Trigger type
	105	Int_t fEvaluate; // Evaluate total and partial cross-sections
	106	Int_t fSelectAll; // Flag to write the full event
	107	Int_t fFlavor; // Selected particle flavor 4: charm+beauty 5: beauty
36b81802	108	Float_t fKineBias; // Bias from kinematic selection
36b81802	109	Int_t fTrials; // Number of trials
36b81802	110	Float_t fXsection; // Cross-section
b88f5cea	111	THijing *fHijing; //!Hijing
36b81802	112	Float_t fPtHardMin; // lower pT-hard cut
	113	Float_t fPtHardMax; // higher pT-hard cut
	114	Int_t fSpectators; // put spectators on stack
	115	TGraph* fDsigmaDb; // dSigma/db for the system
	116	TGraph* fDnDb; // dNBinaryCollisions/db
	117	Float_t fPtMinJet; // Minimum Pt of triggered Jet
	118	Float_t fEtaMinJet; // Minimum eta of triggered Jet
	119	Float_t fEtaMaxJet; // Maximum eta of triggered Jet
	120	Float_t fPhiMinJet; // At least one of triggered Jets must be in this
	121	Float_t fPhiMaxJet; // phi range
	122	Int_t fRadiation; // Flag to switch on/off initial and final state radiation
	123	Int_t fSimpleJet; // Flag to produce simple tiggered jet topology
	124	Int_t fNoGammas; // Don't write gammas if flag "on"
36b81802	125	// ZDC proposal (by Chiara) to store num. of SPECTATORS protons and neutrons
f0c86dd6	126	Int_t fProjectileSpecn;// Num. of spectator neutrons from projectile nucleus
	127	Int_t fProjectileSpecp;// Num. of spectator protons from projectile nucleus
	128	Int_t fTargetSpecn; // Num. of spectator neutrons from target nucleus
	129	Int_t fTargetSpecp; // Num. of spectator protons from target nucleus
36b81802	130	Int_t fLHC; // Assume LHC as lab frame
f82795ff	131	Bool_t fRandomPz; // Randomise sign of pz event by event
f82795ff	132	Bool_t fNoHeavyQuarks; // If true no heavy quarks are produced
f2f240a9	133	AliGenHijingEventHeader fHeader; // MC Header
7dd84b41	134	Float_t fSigmaNN; // If not -1 set sigmaNN (HIPR1)
	135	Bool_t fNoElas; // If true switch off elastic scattering
	136
36b81802	137	private:
93a2041b	138	AliGenHijing(const AliGenHijing &Hijing);
	139	AliGenHijing & operator=(const AliGenHijing & rhs);
	140
36b81802	141	// adjust the weight from kinematic cuts
	142	void AdjustWeights();
	143	// check seleted daughters
904a753d	144	Bool_t DaughtersSelection(const TParticle* iparticle);
36b81802	145	// check if stable
904a753d	146	Bool_t Stable(const TParticle* particle) const;
36b81802	147
7dd84b41	148	ClassDef(AliGenHijing, 9) // AliGenerator interface to Hijing
36b81802	149	};
36b81802	150	#endif