fgMCEvGen changed to fMCEvGen;
[u/mrichter/AliRoot.git] / THijing / AliGenHijing.h
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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
16class THijing;
17class TArrayI;
18class TParticle;
19class TClonesArray;
20class TGraph;
21
22class 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;}
9c63d20a 70 virtual Int_t GetTrigger() {return fTrigger;}
71 virtual Int_t GetFlavor() {return fFlavor;}
72 virtual Int_t GetRadiation() {return fRadiation;}
73 virtual Int_t GetSpectators() {return fSpectators;}
74 virtual Float_t GetPtJet() {return fPtMinJet;}
36b81802 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 = fPhiMinJet*180./TMath::Pi(); phimax = fPhiMaxJet*180./TMath::Pi();}
79
80
81// Physics Routines
901db296 82 virtual Bool_t ProvidesCollisionGeometry() const {return kTRUE;}
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();
9c63d20a 93 private:
94 void Copy(AliGenHijing &rhs) const;
36b81802 95
96 protected:
97 TString fFrame; // Reference frame
0c85382f 98
36b81802 99 Float_t fMinImpactParam; // minimum impact parameter
100 Float_t fMaxImpactParam; // maximum impact parameter
101 Int_t fKeep; // Flag to keep full event information
102 Int_t fQuench; // Flag to switch on jet quenching
103 Int_t fShadowing; // Flag to switch on nuclear effects on parton distribution function
104 Int_t fDecaysOff; // Flag to turn off decays of pi0, K_s, D, Lambda, sigma
105 Int_t fTrigger; // Trigger type
106 Int_t fEvaluate; // Evaluate total and partial cross-sections
107 Int_t fSelectAll; // Flag to write the full event
108 Int_t fFlavor; // Selected particle flavor 4: charm+beauty 5: beauty
109 Float_t fEnergyCMS; // Centre of mass energy
110 Float_t fKineBias; // Bias from kinematic selection
111 Int_t fTrials; // Number of trials
112 TArrayI fParentSelect; // Parent particles to be selected
113 TArrayI fChildSelect; // Decay products to be selected
114 Float_t fXsection; // Cross-section
115 THijing *fHijing; // Hijing
116 Float_t fPtHardMin; // lower pT-hard cut
117 Float_t fPtHardMax; // higher pT-hard cut
118 Int_t fSpectators; // put spectators on stack
119 TGraph* fDsigmaDb; // dSigma/db for the system
120 TGraph* fDnDb; // dNBinaryCollisions/db
121 Float_t fPtMinJet; // Minimum Pt of triggered Jet
122 Float_t fEtaMinJet; // Minimum eta of triggered Jet
123 Float_t fEtaMaxJet; // Maximum eta of triggered Jet
124 Float_t fPhiMinJet; // At least one of triggered Jets must be in this
125 Float_t fPhiMaxJet; // phi range
126 Int_t fRadiation; // Flag to switch on/off initial and final state radiation
127 Int_t fSimpleJet; // Flag to produce simple tiggered jet topology
128 Int_t fNoGammas; // Don't write gammas if flag "on"
129
130// ZDC proposal (by Chiara) to store num. of SPECTATORS protons and neutrons
131 Int_t fSpecn; // Num. of spectator neutrons
132 Int_t fSpecp; // Num. of spectator protons
133 Int_t fLHC; // Assume LHC as lab frame
0c85382f 134
36b81802 135 private:
136 // adjust the weight from kinematic cuts
137 void AdjustWeights();
138 // check seleted daughters
139 Bool_t DaughtersSelection(TParticle* iparticle);
140 // check if stable
141 Bool_t Stable(TParticle* particle);
142
143 ClassDef(AliGenHijing,4) // AliGenerator interface to Hijing
144};
145#endif
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