[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>
#include <TArrayI.h>

class THijing;
class TArrayI;
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() {return fEnergyCMS;}
    virtual TString GetReferenceFrame() {return fFrame;}
    virtual void    GetProjectile(TString& tar, Int_t& a, Int_t& z)
	{tar = fProjectile; a = fAProjectile; z = fZProjectile;}    
    virtual void    GetTarget(TString& tar, Int_t& a, Int_t& z)
	{tar = fTarget; a = fATarget; z = fZTarget;}    
    virtual void    GetImpactParameterRange(Float_t& bmin, Float_t& bmax)
	{bmin = fMinImpactParam; bmax = fMaxImpactParam;}
    virtual Int_t   GetJetQuenching()                    {return fQuench;}
    virtual Int_t   GetShadowing()                       {return fShadowing;}
    virtual Int_t   GetTrigger(Int_t flag=kNoTrigger)    {return fTrigger;}
    virtual Int_t   GetFlavor(Int_t flag=0)              {return fFlavor;}
    virtual Int_t   GetRadiation(Int_t flag=3)           {return fRadiation;}    
    virtual Int_t   GetSpectators(Int_t spects=1)        {return fSpectators;}
    virtual Float_t GetPtJet(Float_t ptmin)              {return fPtMinJet;}
    virtual void    GetJetEtaRange(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();}
    

// Physics Routines
    virtual Bool_t ProvidesCollisionGeometry() const {return kTRUE;}
    virtual AliCollisionGeometry* CollisionGeometry() const {return fCollisionGeometry;}
    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
    TArrayI     fParentSelect;   // Parent particles to be selected 
    TArrayI     fChildSelect;    // Decay products to be selected
    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 	fSpecn;		 // Num. of spectator neutrons
    Int_t 	fSpecp;		 // Num. of spectator protons
    Int_t       fLHC;            // Assume LHC as lab frame

 private:
    // adjust the weight from kinematic cuts
    void   AdjustWeights();
    // check seleted daughters
    Bool_t DaughtersSelection(TParticle* iparticle);
    // check if stable
    Bool_t Stable(TParticle*  particle);
    
    ClassDef(AliGenHijing,4) // 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>
	14	#include <TArrayI.h>
	15
	16	class THijing;
	17	class TArrayI;
	18	class TParticle;
	19	class TClonesArray;
	20	class TGraph;
	21
	22	class AliGenHijing : public AliGenMC
	23	{
	24	enum {kNoTrigger, kHardProcesses, kDirectPhotons};
	25
	26	public:
	27	AliGenHijing();
	28	AliGenHijing(Int_t npart);
	29	AliGenHijing(const AliGenHijing &Hijing);
	30	virtual ~AliGenHijing();
	31	virtual void Generate();
	32	virtual void Init();
	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;}
	50	virtual void SetPtJet(Float_t ptmin) {fPtMinJet = ptmin;}
	51	virtual void SetSimpleJets(Int_t flag=0) {fSimpleJet = flag;}
	52	virtual void SetNoGammas(Int_t flag=0) {fNoGammas = flag;}
	53
	54	virtual void SetJetEtaRange(Float_t etamin = -20., Float_t etamax = 20.)
	55	{fEtaMinJet = etamin; fEtaMaxJet = etamax;}
	56	virtual void SetJetPhiRange(Float_t phimin = -180., Float_t phimax = 180.)
	57	{fPhiMinJet = TMath::Pi()phimin/180.; fPhiMaxJet = TMath::Pi()phimax/180.;}
	58	virtual void SetBoostLHC(Int_t flag = 0) {fLHC = flag;}
	59	// Getters
	60	virtual Float_t GetEnergyCMS() {return fEnergyCMS;}
	61	virtual TString GetReferenceFrame() {return fFrame;}
	62	virtual void GetProjectile(TString& tar, Int_t& a, Int_t& z)
	63	{tar = fProjectile; a = fAProjectile; z = fZProjectile;}
	64	virtual void GetTarget(TString& tar, Int_t& a, Int_t& z)
	65	{tar = fTarget; a = fATarget; z = fZTarget;}
	66	virtual void GetImpactParameterRange(Float_t& bmin, Float_t& bmax)
	67	{bmin = fMinImpactParam; bmax = fMaxImpactParam;}
	68	virtual Int_t GetJetQuenching() {return fQuench;}
	69	virtual Int_t GetShadowing() {return fShadowing;}
	70	virtual Int_t GetTrigger(Int_t flag=kNoTrigger) {return fTrigger;}
	71	virtual Int_t GetFlavor(Int_t flag=0) {return fFlavor;}
	72	virtual Int_t GetRadiation(Int_t flag=3) {return fRadiation;}
	73	virtual Int_t GetSpectators(Int_t spects=1) {return fSpectators;}
	74	virtual Float_t GetPtJet(Float_t ptmin) {return fPtMinJet;}
	75	virtual void GetJetEtaRange(Float_t& etamin, Float_t& etamax)
	76	{etamin = fEtaMinJet; etamax = fEtaMaxJet;}
	77	virtual void GetJetPhiRange(Float_t& phimin, Float_t& phimax)
	78	{phimin = fPhiMinJet180./TMath::Pi(); phimax = fPhiMaxJet180./TMath::Pi();}
	79
	80
	81	// Physics Routines
901db296	82	virtual Bool_t ProvidesCollisionGeometry() const {return kTRUE;}
901db296	83	virtual AliCollisionGeometry* CollisionGeometry() const {return fCollisionGeometry;}
36b81802	84	virtual void EvaluateCrossSections();
36b81802	85	virtual TGraph* CrossSection() {return fDsigmaDb;}
	86	virtual TGraph* BinaryCollisions() {return fDnDb;}
	87	virtual Bool_t CheckTrigger();
	88	//
	89	AliGenHijing & operator=(const AliGenHijing & rhs);
	90	protected:
	91	Bool_t SelectFlavor(Int_t pid);
	92	void MakeHeader();
	93
	94	protected:
	95	TString fFrame; // Reference frame
0c85382f	96
36b81802	97	Float_t fMinImpactParam; // minimum impact parameter
	98	Float_t fMaxImpactParam; // maximum impact parameter
	99	Int_t fKeep; // Flag to keep full event information
	100	Int_t fQuench; // Flag to switch on jet quenching
	101	Int_t fShadowing; // Flag to switch on nuclear effects on parton distribution function
	102	Int_t fDecaysOff; // Flag to turn off decays of pi0, K_s, D, Lambda, sigma
	103	Int_t fTrigger; // Trigger type
	104	Int_t fEvaluate; // Evaluate total and partial cross-sections
	105	Int_t fSelectAll; // Flag to write the full event
	106	Int_t fFlavor; // Selected particle flavor 4: charm+beauty 5: beauty
	107	Float_t fEnergyCMS; // Centre of mass energy
	108	Float_t fKineBias; // Bias from kinematic selection
	109	Int_t fTrials; // Number of trials
	110	TArrayI fParentSelect; // Parent particles to be selected
	111	TArrayI fChildSelect; // Decay products to be selected
	112	Float_t fXsection; // Cross-section
	113	THijing *fHijing; // Hijing
	114	Float_t fPtHardMin; // lower pT-hard cut
	115	Float_t fPtHardMax; // higher pT-hard cut
	116	Int_t fSpectators; // put spectators on stack
	117	TGraph* fDsigmaDb; // dSigma/db for the system
	118	TGraph* fDnDb; // dNBinaryCollisions/db
	119	Float_t fPtMinJet; // Minimum Pt of triggered Jet
	120	Float_t fEtaMinJet; // Minimum eta of triggered Jet
	121	Float_t fEtaMaxJet; // Maximum eta of triggered Jet
	122	Float_t fPhiMinJet; // At least one of triggered Jets must be in this
	123	Float_t fPhiMaxJet; // phi range
	124	Int_t fRadiation; // Flag to switch on/off initial and final state radiation
	125	Int_t fSimpleJet; // Flag to produce simple tiggered jet topology
	126	Int_t fNoGammas; // Don't write gammas if flag "on"
	127
	128	// ZDC proposal (by Chiara) to store num. of SPECTATORS protons and neutrons
	129	Int_t fSpecn; // Num. of spectator neutrons
	130	Int_t fSpecp; // Num. of spectator protons
	131	Int_t fLHC; // Assume LHC as lab frame
0c85382f	132
36b81802	133	private:
	134	// adjust the weight from kinematic cuts
	135	void AdjustWeights();
	136	// check seleted daughters
	137	Bool_t DaughtersSelection(TParticle* iparticle);
	138	// check if stable
	139	Bool_t Stable(TParticle* particle);
	140
	141	ClassDef(AliGenHijing,4) // AliGenerator interface to Hijing
	142	};
	143	#endif
	144
	145
	146
	147
	148