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1 | #ifndef ALIGENZDC_H | |
2 | #define ALIGENZDC_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 | // // | |
10 | // Test pc generator for ZDC (taking into account // | |
11 | // Fermi smearing, beam divergence and crossing) // | |
12 | // // | |
13 | //////////////////////////////////////////////////// | |
14 | ||
15 | ||
16 | #include <TMath.h> | |
17 | ||
18 | #include "AliGenerator.h" | |
19 | ||
20 | ||
21 | class AliGenZDC : public AliGenerator { | |
22 | ||
23 | public: | |
24 | AliGenZDC(); | |
25 | AliGenZDC(Int_t npart); | |
26 | virtual ~AliGenZDC() {} | |
27 | void Init(); | |
28 | void Generate(); | |
29 | ||
30 | // Fermi smearing, beam divergence and crossing angle | |
31 | void FermiTwoGaussian(Float_t A); | |
32 | void ExtractFermi(Int_t id, Double_t *ddp); | |
33 | void BeamDivCross(Int_t icross, Double_t *pLab); | |
34 | void AddAngle(Double_t theta1, Double_t phi1, Double_t theta2, | |
35 | Double_t phi2, Double_t *angle); | |
36 | ||
37 | ||
38 | // Parameters that could be set for generation | |
39 | void SetParticle(Int_t ipart) {fIpart=ipart;}; | |
40 | void SetMomentum(Float_t ptot) {fPMin=ptot; fPMax=ptot;}; | |
41 | void SetDirection(Float_t zpsrp, Float_t cosx, Float_t cosy, Float_t cosz) | |
42 | {fPseudoRapidity=zpsrp; fCosx=cosx; fCosy=cosy; fCosz=cosz;}; | |
43 | void SetFermi(Int_t Fflag) {fFermiflag=Fflag;}; | |
44 | void SetDiv(Float_t bmdiv, Float_t bmcra, Int_t iflcr) | |
45 | {fBeamDiv=bmdiv; fBeamCrossAngle=bmcra; fBeamCrossPlane=iflcr;}; | |
46 | void SetDebug(Int_t idebu) {fDebugOpt = idebu;}; | |
47 | ||
48 | // Getters | |
49 | Double_t GetFermi2p(Int_t key) const {return fProbintp[key];} | |
50 | Double_t GetFermi2n(Int_t key) const {return fProbintn[key];} | |
51 | ||
52 | protected: | |
53 | Int_t fIpart; // Particle to be generated | |
54 | Float_t fCosx; // Director cos of the track - x direction | |
55 | Float_t fCosy; // Director cos of the track - y direction | |
56 | Float_t fCosz; // Director cos of the track - z direction | |
57 | Float_t fPseudoRapidity; // Pseudorapidity (!=0 -> eta of the particle) | |
58 | // (=0 -> director cos of the track) | |
59 | Int_t fFermiflag; // Fermi momentum flag (=1 -> Fermi smearing) | |
60 | Float_t fBeamDiv; // Beam divergence (angle in rad) | |
61 | Float_t fBeamCrossAngle; // Beam crossing angle (angle in rad) | |
62 | Int_t fBeamCrossPlane; // Beam crossing plane | |
63 | // (=1 -> horizontal, =2 -> vertical plane) | |
64 | Double_t fProbintp[201]; // Protons momentum distribution due to Fermi | |
65 | Double_t fProbintn[201]; // Neutrons momentum distribution due to Fermi | |
66 | Double_t fPp[201]; // Spectator momenta | |
67 | Int_t fDebugOpt; // Option for debugging [0->No debug, 1->Screen | |
68 | // prints, 2->ASCII data file] | |
69 | ||
70 | private: | |
71 | AliGenZDC(const AliGenZDC & gen); | |
72 | AliGenZDC & operator=(const AliGenZDC & gen); | |
73 | ||
74 | ClassDef(AliGenZDC,1) // Generator for AliZDC class | |
75 | }; | |
76 | ||
77 | #endif |