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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 | ||
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;} | |
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 | |
b88f5cea | 115 | THijing *fHijing; //!Hijing |
36b81802 | 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 | |
146 | ||
147 | ||
148 | ||
149 | ||
150 |