from M Weber: L1Gamma sigma check value relaxed
[u/mrichter/AliRoot.git] / EVGEN / AliGenMC.h
CommitLineData
e36044d6 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
62d0ae06 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
ea24f998 15#include<TClonesArray.h>
3b945a60 16#include <TArrayI.h>
3b945a60 17#include <TString.h>
ea24f998 18class TParticle;
e36044d6 19
ac3faee4 20class AliGeometry;
d97fb2bb 21class AliGenEventHeader;
ac3faee4 22#include "AliGenerator.h"
4a33c50d 23#include "AliDecayer.h"
e36044d6 24
25class AliGenMC : public AliGenerator
26{
27 public:
28 AliGenMC();
29 AliGenMC(Int_t npart);
e36044d6 30 virtual ~AliGenMC();
7a5ebd8f 31 virtual void Init();
a0609231 32 virtual void SetForceDecay(Decay_t decay = kAll) {fForceDecay = decay;}
93a2041b 33 virtual void SetCutOnChild(Int_t flag = 0) {fCutOnChild = flag;}
e36044d6 34 virtual void SetChildMomentumRange(Float_t pmin = 0, Float_t pmax = 1.e10)
35 {fChildPMin = pmin; fChildPMax = pmax;}
36 virtual void SetChildPtRange(Float_t ptmin = 0, Float_t ptmax = 20.)
37 {fChildPtMin = ptmin; fChildPtMax = ptmax;}
ab456baa 38 virtual void SetChildPhiRange(Float_t phimin = 0., Float_t phimax = 360.)
e36044d6 39 {fChildPhiMin = TMath::Pi()*phimin/180;
40 fChildPhiMax = TMath::Pi()*phimax/180;}
41 virtual void SetChildThetaRange(Float_t thetamin = 0, Float_t thetamax = 180)
42 {fChildThetaMin = TMath::Pi()*thetamin/180;
43 fChildThetaMax = TMath::Pi()*thetamax/180;}
44 virtual void SetChildYRange(Float_t ymin = -12, Float_t ymax = 12)
45 {fChildYMin = ymin;
46 fChildYMax = ymax;}
65de9f86 47 virtual void SetMaximumLifetime(Float_t time = 1.e-15) {fMaxLifeTime = time;}
48
49 virtual void SetGeometryAcceptance(AliGeometry * GeometryAcceptance=0) {fGeometryAcceptance = GeometryAcceptance;}
50
51 virtual void SetPdgCodeParticleforAcceptanceCut(Int_t PdgCodeParticleforAcceptanceCut=0) {fPdgCodeParticleforAcceptanceCut = PdgCodeParticleforAcceptanceCut;}
52
53 virtual void SetNumberOfAcceptedParticles(Int_t NumberOfAcceptedParticles=2) {fNumberOfAcceptedParticles = NumberOfAcceptedParticles;}
3b945a60 54
65de9f86 55 virtual Bool_t CheckAcceptanceGeometry(Int_t np, TClonesArray* particles);
36d770d9 56 virtual void SetProjectile(TString proj="P", Int_t a = 1, Int_t z = 1)
3b945a60 57 {fProjectile = proj; fAProjectile = a; fZProjectile = z;}
36d770d9 58 virtual void SetTarget(TString tar="P", Int_t a = 1, Int_t z = 1)
1c56e311 59 {fTarget = tar; fATarget = a; fZTarget = z;}
60 virtual void SetCrossingAngle(Float_t phiX, Float_t phiY) {fXingAngleX = phiX; fXingAngleY = phiY;}
36d770d9 61 virtual void Boost();
7eb751fe 62 virtual void BeamCrossAngle();
d97fb2bb 63 virtual void AddHeader(AliGenEventHeader* header);
fc7e1b1c 64
e36044d6 65 protected:
66 // check if particle is selected as parent particle
62d0ae06 67 Bool_t ParentSelected(Int_t ip) const;
e36044d6 68 // check if particle is selected as child particle
62d0ae06 69 Bool_t ChildSelected(Int_t ip) const;
e36044d6 70 // all kinematic selection cuts go here
4a33c50d 71 Bool_t KinematicSelection(const TParticle *particle, Int_t flag) const;
62d0ae06 72 Int_t CheckPDGCode(Int_t pdgcode) const;
93a2041b 73
e36044d6 74 protected:
ea24f998 75 TClonesArray fParticles; //!Particle List
76 TArrayI fParentSelect; //!Parent particles to be selected
77 TArrayI fChildSelect; //!Decay products to be selected
78 Int_t fCutOnChild; // Cuts on decay products (children) are enabled/disabled
79 Float_t fChildPtMin; // Children minimum pT
80 Float_t fChildPtMax; // Children maximum pT
81 Float_t fChildPMin; // Children minimum p
82 Float_t fChildPMax; // Children maximum p
83 Float_t fChildPhiMin; // Children minimum phi
84 Float_t fChildPhiMax; // Children maximum phi
85 Float_t fChildThetaMin; // Children minimum theta
86 Float_t fChildThetaMax; // Children maximum theta
87 Float_t fChildYMin; // Children minimum y
88 Float_t fChildYMax; // Children maximum y
89 Float_t fXingAngleX; // Crossing angle X
90 Float_t fXingAngleY; // Crossing angle Y
91 Decay_t fForceDecay; // Decay channel forced
92 Float_t fMaxLifeTime; // Maximum lifetime for unstable particles
ea24f998 93 Double_t fDyBoost; // dy for boost into lab frame
94 AliGeometry* fGeometryAcceptance; // Geometry to which particles must be simulated
95 Int_t fPdgCodeParticleforAcceptanceCut; // Abs(PDG Code) of the particle to which the GeometryAcceptance must be applied
96 Int_t fNumberOfAcceptedParticles; // Number of accepted particles in GeometryAcceptance with the right Abs(PdgCode)
97 Int_t fNprimaries; // Number of produced and stored particles
7eb751fe 98
93a2041b 99 private:
100 AliGenMC(const AliGenMC &MC);
101 AliGenMC & operator=(const AliGenMC & rhs);
47fc6bd5 102
e7c989e4 103 ClassDef(AliGenMC,7) // AliGenerator implementation for generators using MC methods
e36044d6 104};
105#endif
106
107
108
109
110