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fe4da5cc | 1 | #ifndef ALIGENERATOR_H |
2 | #define ALIGENERATOR_H | |
3da30618 | 3 | /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * |
4 | * See cxx source for full Copyright notice */ | |
5 | ||
6 | /* $Id$ */ | |
7 | ||
fe4da5cc | 8 | /////////////////////////////////////////////////////////// |
9 | // // | |
10 | // Class to generate the particles for the MC // | |
11 | // The base class is empty // | |
12 | // // | |
13 | /////////////////////////////////////////////////////////// | |
14 | ||
116cbefd | 15 | #include <TArrayF.h> |
16 | #include <TLorentzVector.h> | |
17 | #include <TMCProcess.h> | |
18 | ||
65fb704d | 19 | #include "AliRndm.h" |
eeb8ca4e | 20 | |
14248849 | 21 | class AliVertexGenerator; |
116cbefd | 22 | class AliCollisionGeometry; |
d6eec420 | 23 | class AliGenEventHeader; |
69a313ec | 24 | class AliStack; |
116cbefd | 25 | class TGenerator; |
26 | ||
69a313ec | 27 | |
fe4da5cc | 28 | |
0b910a04 | 29 | typedef enum { kNoSmear, kPerEvent, kPerTrack } VertexSmear_t; |
30 | typedef enum { kExternal, kInternal, kContainer} VertexSource_t; | |
fe4da5cc | 31 | |
69a313ec | 32 | |
65fb704d | 33 | class AliGenerator : public TNamed, public AliRndm |
fe4da5cc | 34 | { |
35 | ||
fe4da5cc | 36 | public: |
37 | AliGenerator(); | |
38 | AliGenerator(Int_t npart); | |
39 | virtual ~AliGenerator(); | |
40 | virtual void Init(); | |
94de3818 | 41 | virtual void SetOrigin(Float_t ox, Float_t oy, Float_t oz); |
42 | virtual void SetOrigin(const TLorentzVector &o); | |
43 | virtual void SetSigma(Float_t sx, Float_t sy, Float_t sz); | |
44 | virtual void SetMomentumRange(Float_t pmin=0, Float_t pmax=1.e10); | |
d48c5cd4 | 45 | virtual void SetPtRange(Float_t ptmin=0, Float_t ptmax=1.e10); |
05be135b | 46 | virtual void SetPhiRange(Float_t phimin = 0., Float_t phimax = 360.); |
94de3818 | 47 | virtual void SetYRange(Float_t ymin=-100, Float_t ymax=100); |
fe4da5cc | 48 | virtual void SetVRange(Float_t vxmin, Float_t vxmax, |
49 | Float_t vymin, Float_t vymax, | |
94de3818 | 50 | Float_t vzmin, Float_t vzmax); |
fe4da5cc | 51 | virtual void SetNumberParticles(Int_t npart=100) {fNpart=npart;} |
94de3818 | 52 | virtual Int_t NumberParticles() const {return fNpart;} |
53 | virtual void SetThetaRange(Float_t thetamin=0, Float_t thetamax=180); | |
fe4da5cc | 54 | virtual void Generate()=0; |
55 | virtual void SetParentWeight(Float_t wgt) {fParentWeight=wgt;} | |
56 | virtual void SetChildWeight(Float_t wgt) {fChildWeight=wgt;} | |
57 | virtual void SetAnalog(Int_t flag=1) {fAnalog=flag;} | |
58 | virtual void SetVertexSmear(VertexSmear_t smear) {fVertexSmear = smear;} | |
c34578e7 | 59 | virtual void SetCutVertexZ(Float_t cut=999999.) {fCutVertexZ = cut;} |
0b910a04 | 60 | virtual void SetVertexSource(VertexSource_t source = kInternal) {fVertexSource = source;} |
61 | virtual void SetVertex(Float_t vx, Float_t vy, Float_t vz) | |
62 | {fVertex[0] = vx; fVertex[1] = vy; fVertex[2] = vz;} | |
14248849 | 63 | void SetVertexGenerator(AliVertexGenerator* vertexGenerator) |
64 | {fVertexGenerator = vertexGenerator; fVertexSource = kExternal; fVertexSmear = kPerEvent;} | |
f0831961 | 65 | void SetPileUpTimeWindow(Float_t pileUpTimeW) {fPileUpTimeWindow = pileUpTimeW;} |
66 | ||
4a3ba9d2 | 67 | virtual void SetTrackingFlag(Int_t flag=1) {fTrackIt=flag;} |
f89cabfe | 68 | void Vertex(); |
69 | void VertexExternal(); | |
70 | virtual void VertexInternal(); | |
0b910a04 | 71 | virtual void FinishRun(); |
a08cd31a | 72 | virtual void SetMC(TGenerator *theMC) {fMCEvGen =theMC;} |
d6eec420 | 73 | virtual void AddHeader(AliGenEventHeader* /*header*/) {;} |
74 | virtual void SetContainer(AliGenerator* container) {fContainer = container;} | |
aee8290b | 75 | |
c9001868 | 76 | // Getters |
77 | ||
94de3818 | 78 | virtual void GetOrigin(Float_t &ox, Float_t &oy, Float_t &oz) const |
79 | {ox=fOrigin.At(0);oy=fOrigin.At(1);oz=fOrigin.At(2);} | |
80 | virtual void GetOrigin(TLorentzVector &o) const | |
81 | {o[0]=fOrigin.At(0);o[1]=fOrigin.At(1);o[2]=fOrigin.At(2);o[3]=0;} | |
2c5b3727 | 82 | // Stack |
69a313ec | 83 | void SetStack (AliStack *stack) {fStack = stack;} |
84 | AliStack* GetStack(){return fStack;} | |
2c5b3727 | 85 | // Collision Geometry |
116cbefd | 86 | virtual Bool_t ProvidesCollisionGeometry() const {return kFALSE;} |
87 | virtual Bool_t NeedsCollisionGeometry() const {return kFALSE;} | |
39192f05 | 88 | virtual AliCollisionGeometry* CollisionGeometry() const {return fCollisionGeometry;} |
2c5b3727 | 89 | virtual void SetCollisionGeometry(AliCollisionGeometry* geom) {fCollisionGeometry = geom;} |
69a313ec | 90 | protected: |
642f15cf | 91 | virtual void PushTrack(Int_t done, Int_t parent, Int_t pdg, |
69a313ec | 92 | Float_t *pmom, Float_t *vpos, Float_t *polar, |
98490ea9 | 93 | Float_t tof, TMCProcess mech, Int_t &ntr, |
47c8bcbe | 94 | Float_t weight = 1, Int_t is = 0); |
642f15cf | 95 | virtual void PushTrack(Int_t done, Int_t parent, Int_t pdg, |
69a313ec | 96 | Double_t px, Double_t py, Double_t pz, Double_t e, |
97 | Double_t vx, Double_t vy, Double_t vz, Double_t tof, | |
98 | Double_t polx, Double_t poly, Double_t polz, | |
98490ea9 | 99 | TMCProcess mech, Int_t &ntr, Float_t weight = 1, Int_t is = 0); |
69a313ec | 100 | virtual void KeepTrack(Int_t itrack); |
101 | virtual void SetHighWaterMark(Int_t nt); | |
102 | ||
103 | protected: | |
a08cd31a | 104 | TGenerator* fMCEvGen; //!Pointer to the generator |
aee8290b | 105 | Float_t fThetaMin; //Minimum theta of generation in radians |
106 | Float_t fThetaMax; //Maximum theta of generation in radians | |
107 | Float_t fPhiMin; //Minimum phi of generation in radians | |
108 | Float_t fPhiMax; //Maximum phi of generation in radians | |
109 | Float_t fPMin; //Minimum momentum of generation in GeV/c | |
110 | Float_t fPMax; //Minimum momentum of generation in GeV/c | |
111 | Float_t fPtMin; //Minimum transverse momentum | |
112 | Float_t fPtMax; //Maximum transverse momentum | |
113 | Float_t fYMin; //Minimum rapidity | |
114 | Float_t fYMax; //Maximum rapidity | |
115 | TArrayF fVMin; //Minimum Decaylength | |
116 | TArrayF fVMax; //Minimum Decaylength | |
117 | Int_t fNpart; //Maximum number of particles per event | |
118 | Float_t fParentWeight; //Parent Weight | |
119 | Float_t fChildWeight; //ChildWeight | |
69a313ec | 120 | Int_t fAnalog; //Flag for anolog or pt-weighted generation |
aee8290b | 121 | // |
f89cabfe | 122 | VertexSmear_t fVertexSmear; //Vertex Smearing mode |
c34578e7 | 123 | VertexSource_t fVertexSource; //Vertex source (internal/external) |
f0831961 | 124 | Float_t fCutVertexZ; //Vertex cut in units of sigma_z |
125 | Float_t fPileUpTimeWindow; //Time window for pile-up events | |
6df200c3 | 126 | Int_t fTrackIt; // if 1, Track final state particles |
14248849 | 127 | AliVertexGenerator* fVertexGenerator; //! Generator for the vertex |
f89cabfe | 128 | TArrayF fOrigin; // Origin of event |
6df200c3 | 129 | TArrayF fOsigma; // Sigma of the Origin of event |
d6eec420 | 130 | TArrayF fVertex; //! Vertex of current event |
c34578e7 | 131 | |
d6eec420 | 132 | AliStack* fStack; //! Local pointer to stack |
133 | AliGenerator* fContainer; //! Local pointer to container | |
134 | ||
2c5b3727 | 135 | AliCollisionGeometry* fCollisionGeometry; //!Collision geometry |
69a313ec | 136 | /*************************************************************************/ |
5e34a898 | 137 | enum {kThetaRange = BIT(14), |
138 | kVertexRange = BIT(15), | |
69a313ec | 139 | kPhiRange = BIT(16), |
5e34a898 | 140 | kPtRange = BIT(17), |
69a313ec | 141 | kYRange = BIT(18), |
142 | kMomentumRange = BIT(19) | |
5e34a898 | 143 | }; |
93a2041b | 144 | |
145 | private: | |
146 | AliGenerator(const AliGenerator &gen); | |
147 | AliGenerator & operator=(const AliGenerator &gen); | |
148 | ||
2c5b3727 | 149 | ClassDef(AliGenerator,3) // Base class for event generators |
fe4da5cc | 150 | }; |
151 | ||
152 | #endif | |
69a313ec | 153 | |
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