Dummy copy constructor added
[u/mrichter/AliRoot.git] / RICH / AliRICHChamber.cxx
CommitLineData
2e5f0f7b 1/**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
15
16/*
17 $Log$
64cdfc12 18 Revision 1.1 2000/04/19 12:57:20 morsch
19 Newly structured and updated version (JB, AM)
20
2e5f0f7b 21*/
22
23
24#include "AliRICHChamber.h"
25#include "AliRun.h"
26#include <TLorentzVector.h>
27#include <TParticle.h>
28#include <TRandom.h>
29
30ClassImp(AliRICHChamber)
31
32AliRICHChamber::AliRICHChamber()
33{
34 fSegmentation = 0;
35 fResponse= 0;
36 fGeometry= 0;
37 frMin=0.1;
38 frMax=140;
39 fnsec=1;
40}
41
42//
43// Get reference to response model
44AliRICHResponse* AliRICHChamber::GetResponseModel()
45{
46 return fResponse;
47}
48
49// Configure response model
50void AliRICHChamber::ResponseModel(AliRICHResponse* thisResponse)
51{
52 fResponse=thisResponse;
53}
54
55void AliRICHChamber::Init()
56{
57 fSegmentation->Init(this);
58}
59
60void AliRICHChamber::LocaltoGlobal(Float_t pos[3],Float_t Globalpos[3])
61{
62
63 Double_t *fMatrix;
64 fMatrix = fChamberMatrix->GetMatrix();
65 Globalpos[0]=pos[0]*fMatrix[0]+pos[1]*fMatrix[3]+pos[2]*fMatrix[6];
66 Globalpos[1]=pos[0]*fMatrix[1]+pos[1]*fMatrix[4]+pos[2]*fMatrix[7];
67 Globalpos[2]=pos[0]*fMatrix[2]+pos[1]*fMatrix[5]+pos[2]*fMatrix[8];
68 Globalpos[0]+=fChamberTrans[0];
69 Globalpos[1]+=fChamberTrans[1];
70 Globalpos[2]+=fChamberTrans[2];
71}
72
73void AliRICHChamber::GlobaltoLocal(Float_t pos[3],Float_t Localpos[3])
74{
75
76 Double_t *fMatrixOrig;
77 TMatrix fMatrixCopy(3,3);
78 fMatrixOrig = fChamberMatrix->GetMatrix();
79 for(Int_t i=0;i<3;i++)
80 {
81 for(Int_t j=0;j<3;j++)
82 fMatrixCopy(j,i)=fMatrixOrig[j+3*i];
83 }
84 fMatrixCopy.Invert();
85 //Int_t elements=fMatrixCopy.GetNoElements();
86 //printf("Elements:%d\n",elements);
87 //fMatrixOrig= (Double_t*) fMatrixCopy;
88 Localpos[0] = pos[0] - fChamberTrans[0];
89 Localpos[1] = pos[1] - fChamberTrans[1];
90 Localpos[2] = pos[2] - fChamberTrans[2];
91 //printf("r1:%f, r2:%f, r3:%f\n",Localpos[0],Localpos[1],Localpos[2]);
92 //printf("t1:%f t2:%f t3:%f\n",fChamberTrans[0],fChamberTrans[1],fChamberTrans[2]);
93 Localpos[0]=Localpos[0]*fMatrixCopy(0,0)+Localpos[1]*fMatrixCopy(0,1)+Localpos[2]*fMatrixCopy(0,2);
94 Localpos[1]=Localpos[0]*fMatrixCopy(1,0)+Localpos[1]*fMatrixCopy(1,1)+Localpos[2]*fMatrixCopy(1,2);
95 Localpos[2]=Localpos[0]*fMatrixCopy(2,0)+Localpos[1]*fMatrixCopy(2,1)+Localpos[2]*fMatrixCopy(2,2);
96 //Localpos[0]-=fChamberTrans[0];
97 //Localpos[1]-=fChamberTrans[1];
98 //Localpos[2]-=fChamberTrans[2];
99}
100
101
102void AliRICHChamber::DisIntegration(Float_t eloss, Float_t xhit, Float_t yhit,
103 Int_t& nnew,Float_t newclust[6][500],Response_t res)
104{
105//
106// Generates pad hits (simulated cluster)
107// using the segmentation and the response model
108
109 Float_t dx, dy;
110 Float_t local[3];
111 //Float_t source[3];
112 Float_t global[3];
113 //
114 // Width of the integration area
115 //
116 dx=(fResponse->SigmaIntegration())*(fResponse->ChargeSpreadX());
117 dy=(fResponse->SigmaIntegration())*(fResponse->ChargeSpreadY());
118 //
119 // Get pulse height from energy loss and generate feedback photons
120 Float_t qtot=0;
121
122 local[0]=xhit;
123 // z-position of the wires relative to the RICH mother volume
124 // (2 mmm before CsI) old value: 6.076
64cdfc12 125 local[1]=1.276 + fGeometry->GetGapThickness()/2 - .2;
2e5f0f7b 126 //printf("AliRICHChamber feedback origin:%f",local[1]);
127 local[2]=yhit;
128
129 LocaltoGlobal(local,global);
130
131 Int_t Nfp=0;
132
133 if (res==mip) {
134 qtot = fResponse->IntPH(eloss);
135 Nfp = fResponse->FeedBackPhotons(global,qtot);
136 } else if (res==cerenkov) {
137 qtot = fResponse->IntPH();
138 Nfp = fResponse->FeedBackPhotons(global,qtot);
139 }
140
141 //printf("Feedbacks:%d\n",Nfp);
142
143 //
144 // Loop Over Pads
145
146 Float_t qcheck=0, qp=0;
147
148 nnew=0;
149 for (Int_t i=1; i<=fnsec; i++) {
150 qcheck=0;
151 for (fSegmentation->FirstPad(xhit, yhit, dx, dy);
152 fSegmentation->MorePads();
153 fSegmentation->NextPad())
154 {
155 qp= fResponse->IntXY(fSegmentation);
156 qp= TMath::Abs(qp);
157
158 //printf("Qp:%f\n",qp);
159
160 if (qp > 1.e-4) {
161 qcheck+=qp;
162 //
163 // --- store signal information
164 newclust[0][nnew]=qtot;
165 newclust[1][nnew]=fSegmentation->Ix();
166 newclust[2][nnew]=fSegmentation->Iy();
167 newclust[3][nnew]=qp * qtot;
168 newclust[4][nnew]=fSegmentation->ISector();
169 newclust[5][nnew]=(Float_t) i;
170 nnew++;
171 //printf("Newcluster:%d\n",i);
172 }
173 } // Pad loop
174 } // Cathode plane loop
175 //if (fSegmentation->ISector()==2)
176 //printf("Nnew:%d\n\n\n\n",nnew);
177}
178
179
180
181