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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; |
| 23 | |
| 24 | class AliGenPythia : public AliGenMC |
| 25 | { |
| 26 | public: |
| 27 | |
| 28 | typedef enum {kFlavorSelection, kParentSelection} StackFillOpt_t; |
| 29 | typedef enum {kCountAll, kCountParents, kCountTrackables} CountMode_t; |
| 30 | typedef enum {kCluster, kCell} JetRecMode_t; |
| 31 | |
| 32 | AliGenPythia(); |
| 33 | AliGenPythia(Int_t npart); |
| 34 | AliGenPythia(const AliGenPythia &Pythia); |
| 35 | virtual ~AliGenPythia(); |
| 36 | virtual void Generate(); |
| 37 | virtual void Init(); |
| 38 | // set a cut on the Z coord. of the primary vertex (cm) |
| 39 | // |
| 40 | virtual void SetEventListRange(Int_t eventFirst=-1, Int_t eventLast=-1); |
| 41 | // select process type |
| 42 | virtual void SetProcess(Process_t proc = kPyCharm) {fProcess = proc;} |
| 43 | // select structure function |
| 44 | virtual void SetStrucFunc(StrucFunc_t func = kGRVHO) {fStrucFunc = func;} |
| 45 | // select pt of hard scattering |
| 46 | virtual void SetPtHard(Float_t ptmin = 0, Float_t ptmax = 1.e10) |
| 47 | {fPtHardMin = ptmin; fPtHardMax = ptmax; } |
| 48 | virtual void SetYHard(Float_t ymin = -1.e10, Float_t ymax = 1.e10) |
| 49 | {fYHardMin = ymin; fYHardMax = ymax; } |
| 50 | // Set initial and final state gluon radiation |
| 51 | virtual void SetGluonRadiation(Int_t iIn, Int_t iFin) |
| 52 | {fGinit = iIn; fGfinal = iFin;} |
| 53 | virtual void SetPtKick(Float_t kt = 1.) |
| 54 | {fPtKick = kt;} |
| 55 | // set centre of mass energy |
| 56 | virtual void SetEnergyCMS(Float_t energy = 5500) {fEnergyCMS = energy;} |
| 57 | // treat protons as inside nuclei |
| 58 | virtual void SetNuclei(Int_t a1, Int_t a2); |
| 59 | virtual void SetJetEtRange(Float_t etmin = 0., Float_t etmax = 1.e4) |
| 60 | {fEtMinJet = etmin; fEtMaxJet = etmax;} |
| 61 | virtual void SetJetEtaRange(Float_t etamin = -20., Float_t etamax = 20.) |
| 62 | {fEtaMinJet = etamin; fEtaMaxJet = etamax;} |
| 63 | virtual void SetJetReconstructionMode(Int_t mode = kCell) {fJetReconstruction = mode;} |
| 64 | virtual void SetJetPhiRange(Float_t phimin = 0., Float_t phimax = 360.) |
| 65 | {fPhiMinJet = TMath::Pi()*phimin/180.; fPhiMaxJet = TMath::Pi()*phimax/180.;} |
| 66 | virtual void SetGammaEtaRange(Float_t etamin = -20., Float_t etamax = 20.) |
| 67 | {fEtaMinGamma = etamin; fEtaMaxGamma = etamax;} |
| 68 | virtual void SetGammaPhiRange(Float_t phimin = 0., Float_t phimax = 360.) |
| 69 | {fPhiMinGamma = TMath::Pi()*phimin/180.; fPhiMaxGamma = TMath::Pi()*phimax/180.;} |
| 70 | // Set option for feed down from higher family |
| 71 | virtual void SetFeedDownHigherFamily(Bool_t opt) { |
| 72 | fFeedDownOpt = opt; |
| 73 | } |
| 74 | // Set option for selecting particles kept in stack according to flavor |
| 75 | // or to parent selection |
| 76 | virtual void SetStackFillOpt(StackFillOpt_t opt) { |
| 77 | fStackFillOpt = opt; |
| 78 | } |
| 79 | // Set fragmentation option |
| 80 | virtual void SetFragmentation(const Bool_t opt) { |
| 81 | fFragmentation = opt; |
| 82 | } |
| 83 | // Set counting mode |
| 84 | virtual void SetCountMode(const CountMode_t mode) { |
| 85 | fCountMode = mode; |
| 86 | } |
| 87 | |
| 88 | // get cross section of process |
| 89 | virtual Float_t GetXsection() const {return fXsection;} |
| 90 | // get triggered jets |
| 91 | void GetJets(Int_t& njets, Int_t& ntrig, Float_t[4][10]); |
| 92 | void RecJetsUA1(Float_t eCellMin, Float_t eCellSeed, Float_t eMin, Float_t rMin, |
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93 | Int_t& njets, Float_t jets[4][50]); |
| 94 | void SetPycellParameters(Float_t etamax = 2., Int_t neta = 274, Int_t nphi = 432, |
| 95 | Float_t thresh = 0., Float_t etseed = 4., |
| 96 | Float_t minet = 10., Float_t r = 1.); |
| 97 | |
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98 | void LoadEvent(); |
| 99 | // Getters |
| 100 | virtual Process_t GetProcess() {return fProcess;} |
| 101 | virtual StrucFunc_t GetStrucFunc() {return fStrucFunc;} |
| 102 | virtual void GetPtHard(Float_t& ptmin, Float_t& ptmax) |
| 103 | {ptmin = fPtHardMin; ptmax = fPtHardMax = ptmax;} |
| 104 | virtual Float_t GetEnergyCMS() {return fEnergyCMS;} |
| 105 | virtual void GetNuclei(Int_t& a1, Int_t& a2) |
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106 | {a1 = fAProjectile; a2 = fATarget;} |
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107 | virtual void GetJetEtRange(Float_t& etamin, Float_t& etamax) |
| 108 | {etamin = fEtaMinJet; etamax = fEtaMaxJet;} |
| 109 | virtual void GetJetPhiRange(Float_t& phimin, Float_t& phimax) |
| 110 | {phimin = fPhiMinJet*180./TMath::Pi(); phimax = fPhiMaxJet*180/TMath::Pi();} |
| 111 | virtual void GetGammaEtaRange(Float_t& etamin, Float_t& etamax) |
| 112 | {etamin = fEtaMinGamma; etamax = fEtaMaxGamma;} |
| 113 | virtual void GetGammaPhiRange(Float_t& phimin, Float_t& phimax) |
| 114 | {phimin = fPhiMinGamma*180./TMath::Pi(); phimax = fPhiMaxGamma*180./TMath::Pi();} |
| 115 | // |
| 116 | virtual void FinishRun(); |
| 117 | Bool_t CheckTrigger(TParticle* jet1, TParticle* jet2); |
| 118 | |
| 119 | // Assignment Operator |
| 120 | AliGenPythia & operator=(const AliGenPythia & rhs); |
| 121 | protected: |
| 122 | // adjust the weight from kinematic cuts |
| 123 | void AdjustWeights(); |
| 124 | Int_t GenerateMB(); |
| 125 | void MakeHeader(); |
| 126 | |
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127 | |
| 128 | Process_t fProcess; //Process type |
| 129 | StrucFunc_t fStrucFunc; //Structure Function |
| 130 | Float_t fEnergyCMS; //Centre of mass energy |
| 131 | Float_t fKineBias; //!Bias from kinematic selection |
| 132 | Int_t fTrials; //!Number of trials for current event |
| 133 | Int_t fTrialsRun; //!Number of trials for run |
| 134 | Float_t fQ; //Mean Q |
| 135 | Float_t fX1; //Mean x1 |
| 136 | Float_t fX2; //Mean x2 |
| 137 | Int_t fNev; //Number of events |
| 138 | Int_t fFlavorSelect; //Heavy Flavor Selection |
| 139 | Float_t fXsection; //Cross-section |
| 140 | AliPythia *fPythia; //!Pythia |
| 141 | Float_t fPtHardMin; //lower pT-hard cut |
| 142 | Float_t fPtHardMax; //higher pT-hard cut |
| 143 | Float_t fYHardMin; //lower y-hard cut |
| 144 | Float_t fYHardMax; //higher y-hard cut |
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145 | Int_t fGinit; //initial state gluon radiation |
| 146 | Int_t fGfinal; //final state gluon radiation |
| 147 | Float_t fPtKick; //Transverse momentum kick |
| 148 | Bool_t fFullEvent; //!Write Full event if true |
| 149 | AliDecayer *fDecayer; //!Pointer to the decayer instance |
| 150 | Int_t fDebugEventFirst; //!First event to debug |
| 151 | Int_t fDebugEventLast; //!Last event to debug |
| 152 | Float_t fEtMinJet; //Minimum et of triggered Jet |
| 153 | Float_t fEtMaxJet; //Maximum et of triggered Jet |
| 154 | Float_t fEtaMinJet; //Minimum eta of triggered Jet |
| 155 | Float_t fEtaMaxJet; //Maximum eta of triggered Jet |
| 156 | Float_t fPhiMinJet; //Minimum phi of triggered Jet |
| 157 | Float_t fPhiMaxJet; //Maximum phi of triggered Jet |
| 158 | Int_t fJetReconstruction; //Jet Reconstruction mode |
| 159 | Float_t fEtaMinGamma; // Minimum eta of triggered gamma |
| 160 | Float_t fEtaMaxGamma; // Maximum eta of triggered gamma |
| 161 | Float_t fPhiMinGamma; // Minimum phi of triggered gamma |
| 162 | Float_t fPhiMaxGamma; // Maximum phi of triggered gamma |
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163 | Float_t fPycellEtaMax; // Max. eta for Pycell |
| 164 | Int_t fPycellNEta; // Number of eta bins for Pycell |
| 165 | Int_t fPycellNPhi; // Number of phi bins for Pycell |
| 166 | Float_t fPycellThreshold; // Pycell threshold |
| 167 | Float_t fPycellEtSeed; // Pycell seed |
| 168 | Float_t fPycellMinEtJet; // Pycell min. jet et |
| 169 | Float_t fPycellMaxRadius; // Pycell cone radius |
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170 | StackFillOpt_t fStackFillOpt; // Stack filling with all particles with |
| 171 | // that flavour or only with selected |
| 172 | // parents and their decays |
| 173 | Bool_t fFeedDownOpt; // Option to set feed down from higher |
| 174 | // quark families (e.g. b->c) |
| 175 | Bool_t fFragmentation; // Option to activate fragmentation by Pythia |
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176 | Bool_t fSetNuclei; // Flag indicating that SetNuclei has been called |
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177 | // |
| 178 | |
| 179 | CountMode_t fCountMode; // Options for counting when the event will be finished. |
| 180 | // fCountMode = kCountAll --> All particles that end up in the |
| 181 | // stack are counted |
| 182 | // fCountMode = kCountParents --> Only selected parents are counted |
| 183 | // fCountMode = kCountTrackabless --> Only particles flagged for tracking |
| 184 | // are counted |
| 185 | // |
| 186 | ClassDef(AliGenPythia,4) // AliGenerator interface to Pythia |
| 187 | }; |
| 188 | #endif |
| 189 | |
| 190 | |
| 191 | |
| 192 | |
| 193 | |
git://git.uio.no / u / mrichter / AliRoot.git / blame