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1// Implementation of the interface for THBTprocessor
2// which is a wrapper itself to Fortran
3// program "HBT processor" written by Lanny Ray
4// Author: Piotr Krzysztof Skowronski <Piotr.Skowronski@cern.ch>
5//
6/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
7 * See cxx source for full Copyright notice */
8
9/* $Id$ */
10
11#ifndef ALIGENHBTPROCESSOR_H
12#define ALIGENHBTPROCESSOR_H
13
14#include "AliGenerator.h"
15#include <AliPDG.h>
16
17class THBTprocessor;
18class TClonesArray;
19
20enum {kHBTPMaxParticleTypes = 50};
21
22class AliGenHBTprocessor : public AliGenerator
23{
24//Wrapper class for THBTProcessor
25//which is a wrapper itself to Fortran
26//program "HBT processor" written by Lanny Ray
27//
28//Piotr.Skowronski@cern.ch
29
30 public:
31 AliGenHBTprocessor();
32 AliGenHBTprocessor(const AliGenHBTprocessor& in);
33 virtual ~AliGenHBTprocessor();
34
35 virtual void Init();
36 virtual void Generate();
37 virtual void GetParticles(TClonesArray * particles) const;
38 Int_t IdFromPDG(Int_t pdg) const;
39 Int_t PDGFromId(Int_t id) const;
40
41 Int_t GetHbtPStatusCode(Int_t part) const;
42 void SetHbtPStatusCode(Int_t hbtstatcode, Int_t part);
43/************* S E T T E R S ******************/
44
45 virtual void SetTrackRejectionFactor(Float_t trf = 1.0);
46
47 virtual void SetRefControl(Int_t rc =2);
48 virtual void SetPIDs(Int_t pid1 = kPiPlus,Int_t pid2 = kPiMinus); //PDG Codes of particles to be processed, default \\Pi^{+} and \\Pi^{-}
49 virtual void SetNPIDtypes(Int_t npidt = 2); //Number ofparticle types to be processed
50 virtual void SetDeltap(Float_t deltp = 0.1); //maximum range for random momentum shifts in GeV/c;
51 //px,py,pz independent; Default = 0.1 GeV/c.
52 virtual void SetMaxIterations(Int_t maxiter = 50);//
53 virtual void SetDelChi(Float_t dc = 0.1);
54 virtual void SetIRand(Int_t irnd = 76564) ;
55
56 virtual void SetLambda(Float_t lam = 0.6);
57 virtual void SetR1d(Float_t r = 7.0) ;
58 virtual void SetRSide(Float_t rs = 6.0);
59 virtual void SetROut(Float_t ro = 7.0) ;
60 virtual void SetRLong(Float_t rl = 4.0) ;
61 virtual void SetRPerp(Float_t rp = 6.0);
62 virtual void SetRParallel(Float_t rprl = 4.0);
63 virtual void SetR0(Float_t r0 = 4.0) ;
64 virtual void SetQ0(Float_t q0 = 9.0) ;
65 virtual void SetSwitch1D(Int_t s1d = 3);
66 virtual void SetSwitch3D(Int_t s3d = 0) ;
67 virtual void SetSwitchType(Int_t st = 3);
68 virtual void SetSwitchCoherence(Int_t sc = 0);
69 virtual void SetSwitchCoulomb(Int_t scol = 2);
70 virtual void SetSwitchFermiBose(Int_t sfb = 1);
71
72 virtual void SetMomentumRange(Float_t pmin=0, Float_t pmax=0); //Dummy method
73 virtual void SetPtRange(Float_t ptmin = 0.1, Float_t ptmax = 0.98);
74 virtual void SetPxRange(Float_t pxmin = -1.0, Float_t pxmax = 1.0);
75 virtual void SetPyRange(Float_t pymin = -1.0, Float_t pymax = 1.0);
76 virtual void SetPzRange(Float_t pzmin = -3.6, Float_t pzmax = 3.6);
77
78 virtual void SetPhiRange(Float_t phimin = 0.0, Float_t phimax = 360.0);//Angle in degrees
79 //coherent with AliGenCocktail
80 //incohernet with AliGenerator
81 virtual void SetEtaRange(Float_t etamin = -1.5, Float_t etamax = 1.5);//Pseudorapidity
82 void SetThetaRange(Float_t thetamin = 0, Float_t thetamax = 180); //Azimuthal angle, override AliGenerator method
83 //which uses this, core fortran HBTProcessor uses Eta (pseudorapidity)
84 //so these methods has to be synchronized
85
86 virtual void SetNPtBins(Int_t nptbin = 50);
87 virtual void SetNPhiBins(Int_t nphibin = 50);
88 virtual void SetNEtaBins(Int_t netabin = 50);
89 virtual void SetNPxBins(Int_t npxbin = 20);
90 virtual void SetNPyBins(Int_t npybin = 20);
91 virtual void SetNPzBins(Int_t npzbin = 70);
92
93
94 virtual void SetNBins1DFineMesh(Int_t n = 10);
95 virtual void SetBinSize1DFineMesh(Float_t x=0.01);
96
97 virtual void SetNBins1DCoarseMesh(Int_t n =2 );
98 virtual void SetBinSize1DCoarseMesh(Float_t x=0.05);
99
100 virtual void SetNBins3DFineMesh(Int_t n = 8);
101 virtual void SetBinSize3DFineMesh(Float_t x=0.01);
102
103 virtual void SetNBins3DCoarseMesh(Int_t n = 2);
104 virtual void SetBinSize3DCoarseMesh(Float_t x=0.08);
105
106 virtual void SetNBins3DFineProjectMesh(Int_t n =3 );
107/***********************************************************************/
108/* * * * * * * P R O T E C T E D A R E A * * * * * * * * * * * */
109/***********************************************************************/
110 protected:
111
112 THBTprocessor * fHBTprocessor; //pointer to generator (TGenerator)
113 Int_t **fHbtPStatCodes; //! hbtp status codes of particles
114 Int_t fNPDGCodes; //! Number of defined particles
115 Int_t fPDGCode[kHBTPMaxParticleTypes]; //! PDG codes (for conversion PDG<->Geant)
116 void DefineParticles(); //initiates array with PDG codes
117 void InitStatusCodes(); //Initiates status codes (allocates memory and sets everything to zero)
118 void CleanStatusCodes(); //deletes array with status codes
119 /********** P A R A M E T E R S OF THE GENERATOR****************/
120
121 Float_t fTrackRejectionFactor; //variates in range 0.0 <-> 1.0
122 //Describes the factor of particles rejected from the output.
123 //Used only in case of low muliplicity particles e.g. lambdas.
124 //Processor generates addisional particles and builds the
125 //correletions on such a statistics.
126 //At the end these particels are left in the event according
127 //to this factor: 1==all particles are left
128 // 0==all are removed
129 Int_t fReferenceControl; //switch wether read reference histograms from file =1
130 // compute from input events =2 - default
131 Int_t fPrintFull; // Full print out option - each event
132 Int_t fPrintSectorData; // Print sector overflow diagnostics
133 Int_t fNPidTypes; // # particle ID types to correlate
134 Int_t fPid[2]; // Geant particle ID #s, max of 2 types
135 Int_t fNevents ; // # events in input event text file
136 Int_t fSwitch1d; // Include 1D correlations
137 Int_t fSwitch3d; // Include 3D correlations
138 Int_t fSwitchType ; // For like, unlike or both PID pairs
139 Int_t fSwitchCoherence; // To include incoh/coher mixed source
140 Int_t fSwitchCoulomb; // Coulomb correction selection options
141 Int_t fSwitchFermiBose; // For fermions or bosons
142
143// Counters:
144
145 Int_t fEventLineCounter; // Input event text file line counter
146 Int_t fMaxit; // Max # iterations in track adjustment
147 Int_t fIrand; // Random # starting seed (Def=12345)
148// // line counter
149
150// Correlation Model Parameters:
151
152 Float_t fLambda; // Chaoticity parameter
153 Float_t fR1d; // Spherical source radius (fm)
154 Float_t fRside; // 3D Bertsch-Pratt source 'side' R (fm)
155 Float_t fRout; // 3D Bertsch-Pratt source 'out' R (fm)
156 Float_t fRlong; // 3D Bertsch-Pratt source 'long' R (fm)
157 Float_t fRperp; // 3D YKP source transverse radius (fm)
158 Float_t fRparallel; // 3D YKP source longitudinal radius(fm)
159 Float_t fR0; // 3D YKP source emission time durat(fm)
160 Float_t fQ0; // NA35 Coulomb parameter (GeV/c) or
161// // Coul radius for Pratt finite src (fm)
162
163// Search Control Parameters:
164
165
166 Float_t fDeltap; // Max limit for x,y,z momt shifts(GeV/c)
167 Float_t fDelchi; // Min% change in Chi-Sq to stop iterat.
168
169
170// Particle Masses:
171
172
173 /********** M E S H ****************/
174
175
176 Int_t fNPtBins; // # one-body pt bins
177 Int_t fNPhiBins; // # one-body phi bins
178 Int_t fNEtaBins; // # one-body eta bins
179
180 Int_t fN1dFine; // # bins for 1D, Fine Mesh
181 Int_t fN1dCoarse; // # bins for 1D, Coarse Mesh
182 Int_t fN1dTotal; // Total # bins for 1D
183 Int_t fN3dFine ; // # bins for 3D, Fine Mesh
184 Int_t fN3dCoarse; // # bins for 3D, Coarse Mesh
185 Int_t fN3dTotal; // Total # bins for 3D
186 Int_t fN3dFineProject; // # 3D fine mesh bins to sum over for
187
188// Momentum Space Sectors for Track Sorting:
189
190 Int_t fNPxBins; // # sector bins in px
191 Int_t fNPyBins; // # sector bins in py
192 Int_t fNPzBins; // # sector bins in pz
193 Int_t fNSectors; // Total # sectors in 3D momentum space
194
195
196 Float_t fPtBinSize ; // One-body pt bin size in (GeV/c)
197
198
199 Float_t fPhiBinSize; // One-body phi bin size in (degrees)
200
201 Float_t fEtaBinSize ; // One-body eta bin size
202 Float_t fEtaMin; // One-body eta min
203 Float_t fEtaMax; // One-body eta max
204// Two-Body Histograms and Correlation Mesh for 1D and 3D distributions:
205// // projections onto single axis.
206
207 Float_t fBinsize1dFine; // Bin Size - 1D, Fine Mesh in (GeV/c)
208 Float_t fBinsize1dCoarse; // Bin Size - 1D, Coarse Mesh in (GeV/c)
209 Float_t fQmid1d; // q (GeV/c) at fine-coarse mesh boundary
210 Float_t fQmax1d; // Max q (GeV/c) for 1D distributions
211 Float_t fBinsize3dFine; // Bin Size - 3D, Fine Mesh in (GeV/c)
212 Float_t fBinsize3dCoarse; // Bin Size - 3D, Coarse Mesh in (GeV/c)
213 Float_t fQmid3d; // q (GeV/c) at fine-coarse mesh boundary
214 Float_t fQmax3d; // Max q (GeV/c) for 3D distributions
215
216 Float_t fPxMin; // Sector range in px in GeV/c
217 Float_t fPxMax; //--//--
218 Float_t fDelpx; // Mom. space sector cell size - px(GeV/c)
219
220 Float_t fPyMin; // Sector range in py in GeV/c
221 Float_t fPyMax; // --//--
222 Float_t fDelpy; // Mom. space sector cell size - py(GeV/c)
223
224 Float_t fPzMin; // Sector range in pz in GeV/c min
225 Float_t fPzMax; // Sector range in pz in GeV/c max
226 Float_t fDelpz; // Mom. space sector cell size - pz(GeV/c)
227
228
229 /******* P R O T E C T E D M E T H O D S *****/
230 private:
231 public:
232 //conveerts Eta (pseudorapidity) to etha(azimuthal angle). Returns radians
233 static Double_t EtaToTheta(Double_t arg){return 2.*TMath::ATan(TMath::Exp(-arg));}
234 //converts etha(azimuthal angle) to Eta (pseudorapidity). Argument in radians
235 static Double_t ThetaToEta(Double_t arg);
236 //converts Degrees To Radians
237 static Double_t DegreesToRadians(Double_t arg){return arg*TMath::Pi()/180.;}
238 //converts Radians To Degrees
239 static Double_t RadiansToDegrees(Double_t arg){return arg*180./TMath::Pi();}
240
241 ClassDef(AliGenHBTprocessor,1) // Interface class for AliMevsim
242
243};
244#include <iostream.h>
245#endif