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1 | #ifndef ALIGENMC_H | |
2 | #define ALIGENMC_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 | // Base class for generators using external MC generators. | |
10 | // For example AliGenPythia using Pythia. | |
11 | // Provides basic functionality: setting of kinematic cuts on | |
12 | // decay products and particle selection. | |
13 | // andreas.morsch@cern.ch | |
14 | ||
15 | class TClonesArray; | |
16 | class TParticle; | |
17 | #include <TArrayI.h> | |
18 | #include <TString.h> | |
19 | ||
20 | class AliGeometry; | |
21 | class AliGenEventHeader; | |
22 | ||
23 | #include "AliDecayer.h" | |
24 | #include "AliGenerator.h" | |
25 | ||
26 | class AliGenMC : public AliGenerator | |
27 | { | |
28 | public: | |
29 | AliGenMC(); | |
30 | AliGenMC(Int_t npart); | |
31 | virtual ~AliGenMC(); | |
32 | virtual void Init(); | |
33 | virtual void SetForceDecay(Decay_t decay = kAll) {fForceDecay = decay;} | |
34 | virtual void SetCutOnChild(Int_t flag = 0) {fCutOnChild = flag;} | |
35 | virtual void SetChildMomentumRange(Float_t pmin = 0, Float_t pmax = 1.e10) | |
36 | {fChildPMin = pmin; fChildPMax = pmax;} | |
37 | virtual void SetChildPtRange(Float_t ptmin = 0, Float_t ptmax = 20.) | |
38 | {fChildPtMin = ptmin; fChildPtMax = ptmax;} | |
39 | virtual void SetChildPhiRange(Float_t phimin = 0., Float_t phimax = 360.) | |
40 | {fChildPhiMin = TMath::Pi()*phimin/180; | |
41 | fChildPhiMax = TMath::Pi()*phimax/180;} | |
42 | virtual void SetChildThetaRange(Float_t thetamin = 0, Float_t thetamax = 180) | |
43 | {fChildThetaMin = TMath::Pi()*thetamin/180; | |
44 | fChildThetaMax = TMath::Pi()*thetamax/180;} | |
45 | virtual void SetChildYRange(Float_t ymin = -12, Float_t ymax = 12) | |
46 | {fChildYMin = ymin; | |
47 | fChildYMax = ymax;} | |
48 | virtual void SetMaximumLifetime(Float_t time = 1.e-15) {fMaxLifeTime = time;} | |
49 | ||
50 | virtual void SetGeometryAcceptance(AliGeometry * GeometryAcceptance=0) {fGeometryAcceptance = GeometryAcceptance;} | |
51 | ||
52 | virtual void SetPdgCodeParticleforAcceptanceCut(Int_t PdgCodeParticleforAcceptanceCut=0) {fPdgCodeParticleforAcceptanceCut = PdgCodeParticleforAcceptanceCut;} | |
53 | ||
54 | virtual void SetNumberOfAcceptedParticles(Int_t NumberOfAcceptedParticles=2) {fNumberOfAcceptedParticles = NumberOfAcceptedParticles;} | |
55 | ||
56 | virtual Bool_t CheckAcceptanceGeometry(Int_t np, TClonesArray* particles); | |
57 | virtual void SetProjectile(TString proj="P", Int_t a = 1, Int_t z = 1) | |
58 | {fProjectile = proj; fAProjectile = a; fZProjectile = z;} | |
59 | virtual void SetTarget(TString tar="P", Int_t a = 1, Int_t z = 1) | |
60 | {fTarget = tar; fATarget = a; fZTarget = z;} | |
61 | virtual void SetCrossingAngle(Float_t phiX, Float_t phiY) {fXingAngleX = phiX; fXingAngleY = phiY;} | |
62 | virtual void Boost(); | |
63 | virtual void AddHeader(AliGenEventHeader* header); | |
64 | protected: | |
65 | // check if particle is selected as parent particle | |
66 | Bool_t ParentSelected(Int_t ip) const; | |
67 | // check if particle is selected as child particle | |
68 | Bool_t ChildSelected(Int_t ip) const; | |
69 | // all kinematic selection cuts go here | |
70 | Bool_t KinematicSelection(TParticle *particle, Int_t flag) const; | |
71 | Int_t CheckPDGCode(Int_t pdgcode) const; | |
72 | ||
73 | protected: | |
74 | TClonesArray* fParticles; //!Particle List | |
75 | TArrayI fParentSelect; //!Parent particles to be selected | |
76 | TArrayI fChildSelect; //!Decay products to be selected | |
77 | Int_t fCutOnChild; // Cuts on decay products (children) are enabled/disabled | |
78 | Float_t fChildPtMin; // Children minimum pT | |
79 | Float_t fChildPtMax; // Children maximum pT | |
80 | Float_t fChildPMin; // Children minimum p | |
81 | Float_t fChildPMax; // Children maximum p | |
82 | Float_t fChildPhiMin; // Children minimum phi | |
83 | Float_t fChildPhiMax; // Children maximum phi | |
84 | Float_t fChildThetaMin; // Children minimum theta | |
85 | Float_t fChildThetaMax; // Children maximum theta | |
86 | Float_t fChildYMin; // Children minimum y | |
87 | Float_t fChildYMax; // Children maximum y | |
88 | Float_t fXingAngleX; // Crossing angle X | |
89 | Float_t fXingAngleY; // Crossing angle Y | |
90 | Decay_t fForceDecay; // Decay channel forced | |
91 | Float_t fMaxLifeTime; // Maximum lifetime for unstable particles | |
92 | Int_t fAProjectile; // Projectile A | |
93 | Int_t fZProjectile; // Projectile Z | |
94 | Int_t fATarget; // Target A | |
95 | Int_t fZTarget; // Target Z | |
96 | TString fProjectile; // Projectile | |
97 | TString fTarget; // Target | |
98 | Double_t fDyBoost; // dy for boost into lab frame | |
99 | AliGeometry * fGeometryAcceptance; // Geometry to which particles must be simulated | |
100 | Int_t fPdgCodeParticleforAcceptanceCut; // Abs(PDG Code) of the particle to which the GeometryAcceptance must be applied | |
101 | Int_t fNumberOfAcceptedParticles; // Number of accepted particles in GeometryAcceptance with the right Abs(PdgCode) | |
102 | Int_t fNprimaries; // Number of produced and stored particles | |
103 | ||
104 | private: | |
105 | AliGenMC(const AliGenMC &MC); | |
106 | AliGenMC & operator=(const AliGenMC & rhs); | |
107 | ||
108 | ClassDef(AliGenMC,5) // AliGenerator implementation for generators using MC methods | |
109 | }; | |
110 | #endif | |
111 | ||
112 | ||
113 | ||
114 | ||
115 |