Fixed several diagnostics.
[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 $Log$
ef42d733 18 Revision 1.4 2000/06/30 16:48:58 dibari
19 New function GenerateTresholds() for pedestal simulation.
20
4faf338d 21 Revision 1.3 2000/06/12 15:17:58 jbarbosa
22 Cleaned up version.
23
237c933d 24 Revision 1.2 2000/05/18 13:45:57 jbarbosa
25 Fixed feedback photon origin coordinates
26
64cdfc12 27 Revision 1.1 2000/04/19 12:57:20 morsch
28 Newly structured and updated version (JB, AM)
29
2e5f0f7b 30*/
31
32
33#include "AliRICHChamber.h"
237c933d 34
2e5f0f7b 35#include <TLorentzVector.h>
36#include <TParticle.h>
37#include <TRandom.h>
38
39ClassImp(AliRICHChamber)
40
41AliRICHChamber::AliRICHChamber()
42{
237c933d 43
44//
45// Chamber object constructor
46
2e5f0f7b 47 fSegmentation = 0;
4faf338d 48 fResponse = 0;
49 fGeometry = 0;
50 fTresh = 0;
51 frMin = 0.1;
52 frMax = 140;
53 fnsec = 1;
ef42d733 54 for(Int_t i=0; i<50; ++i) fIndexMap[i] = 0;
2e5f0f7b 55}
56
237c933d 57AliRICHChamber::AliRICHChamber(const AliRICHChamber& Chamber)
58{
59// Copy Constructor
60}
61
62
2e5f0f7b 63AliRICHResponse* AliRICHChamber::GetResponseModel()
64{
237c933d 65//
66// Get reference to response model
2e5f0f7b 67 return fResponse;
68}
69
2e5f0f7b 70void AliRICHChamber::ResponseModel(AliRICHResponse* thisResponse)
71{
237c933d 72// Configure response model
2e5f0f7b 73 fResponse=thisResponse;
74}
75
76void AliRICHChamber::Init()
77{
237c933d 78// Initialise chambers
2e5f0f7b 79 fSegmentation->Init(this);
80}
81
82void AliRICHChamber::LocaltoGlobal(Float_t pos[3],Float_t Globalpos[3])
83{
84
237c933d 85// Local coordinates to global coordinates transformation
86
2e5f0f7b 87 Double_t *fMatrix;
88 fMatrix = fChamberMatrix->GetMatrix();
89 Globalpos[0]=pos[0]*fMatrix[0]+pos[1]*fMatrix[3]+pos[2]*fMatrix[6];
90 Globalpos[1]=pos[0]*fMatrix[1]+pos[1]*fMatrix[4]+pos[2]*fMatrix[7];
91 Globalpos[2]=pos[0]*fMatrix[2]+pos[1]*fMatrix[5]+pos[2]*fMatrix[8];
92 Globalpos[0]+=fChamberTrans[0];
93 Globalpos[1]+=fChamberTrans[1];
94 Globalpos[2]+=fChamberTrans[2];
95}
96
97void AliRICHChamber::GlobaltoLocal(Float_t pos[3],Float_t Localpos[3])
98{
99
237c933d 100// Global coordinates to local coordinates transformation
101
2e5f0f7b 102 Double_t *fMatrixOrig;
103 TMatrix fMatrixCopy(3,3);
104 fMatrixOrig = fChamberMatrix->GetMatrix();
105 for(Int_t i=0;i<3;i++)
106 {
107 for(Int_t j=0;j<3;j++)
108 fMatrixCopy(j,i)=fMatrixOrig[j+3*i];
109 }
110 fMatrixCopy.Invert();
111 //Int_t elements=fMatrixCopy.GetNoElements();
112 //printf("Elements:%d\n",elements);
113 //fMatrixOrig= (Double_t*) fMatrixCopy;
114 Localpos[0] = pos[0] - fChamberTrans[0];
115 Localpos[1] = pos[1] - fChamberTrans[1];
116 Localpos[2] = pos[2] - fChamberTrans[2];
117 //printf("r1:%f, r2:%f, r3:%f\n",Localpos[0],Localpos[1],Localpos[2]);
118 //printf("t1:%f t2:%f t3:%f\n",fChamberTrans[0],fChamberTrans[1],fChamberTrans[2]);
119 Localpos[0]=Localpos[0]*fMatrixCopy(0,0)+Localpos[1]*fMatrixCopy(0,1)+Localpos[2]*fMatrixCopy(0,2);
120 Localpos[1]=Localpos[0]*fMatrixCopy(1,0)+Localpos[1]*fMatrixCopy(1,1)+Localpos[2]*fMatrixCopy(1,2);
121 Localpos[2]=Localpos[0]*fMatrixCopy(2,0)+Localpos[1]*fMatrixCopy(2,1)+Localpos[2]*fMatrixCopy(2,2);
122 //Localpos[0]-=fChamberTrans[0];
123 //Localpos[1]-=fChamberTrans[1];
124 //Localpos[2]-=fChamberTrans[2];
125}
126
127
128void AliRICHChamber::DisIntegration(Float_t eloss, Float_t xhit, Float_t yhit,
237c933d 129 Int_t& nnew,Float_t newclust[6][500],ResponseType res)
2e5f0f7b 130{
131//
132// Generates pad hits (simulated cluster)
133// using the segmentation and the response model
134
135 Float_t dx, dy;
136 Float_t local[3];
137 //Float_t source[3];
138 Float_t global[3];
139 //
140 // Width of the integration area
141 //
142 dx=(fResponse->SigmaIntegration())*(fResponse->ChargeSpreadX());
143 dy=(fResponse->SigmaIntegration())*(fResponse->ChargeSpreadY());
144 //
145 // Get pulse height from energy loss and generate feedback photons
146 Float_t qtot=0;
147
148 local[0]=xhit;
149 // z-position of the wires relative to the RICH mother volume
150 // (2 mmm before CsI) old value: 6.076
64cdfc12 151 local[1]=1.276 + fGeometry->GetGapThickness()/2 - .2;
2e5f0f7b 152 //printf("AliRICHChamber feedback origin:%f",local[1]);
153 local[2]=yhit;
154
155 LocaltoGlobal(local,global);
156
237c933d 157 Int_t nFp=0;
2e5f0f7b 158
237c933d 159 if (res==kMip) {
2e5f0f7b 160 qtot = fResponse->IntPH(eloss);
237c933d 161 nFp = fResponse->FeedBackPhotons(global,qtot);
162 } else if (res==kCerenkov) {
2e5f0f7b 163 qtot = fResponse->IntPH();
237c933d 164 nFp = fResponse->FeedBackPhotons(global,qtot);
2e5f0f7b 165 }
166
237c933d 167 //printf("Feedbacks:%d\n",nFp);
2e5f0f7b 168
169 //
170 // Loop Over Pads
171
172 Float_t qcheck=0, qp=0;
173
174 nnew=0;
175 for (Int_t i=1; i<=fnsec; i++) {
176 qcheck=0;
177 for (fSegmentation->FirstPad(xhit, yhit, dx, dy);
178 fSegmentation->MorePads();
179 fSegmentation->NextPad())
180 {
181 qp= fResponse->IntXY(fSegmentation);
182 qp= TMath::Abs(qp);
183
184 //printf("Qp:%f\n",qp);
185
186 if (qp > 1.e-4) {
187 qcheck+=qp;
188 //
189 // --- store signal information
190 newclust[0][nnew]=qtot;
191 newclust[1][nnew]=fSegmentation->Ix();
192 newclust[2][nnew]=fSegmentation->Iy();
193 newclust[3][nnew]=qp * qtot;
194 newclust[4][nnew]=fSegmentation->ISector();
195 newclust[5][nnew]=(Float_t) i;
196 nnew++;
197 //printf("Newcluster:%d\n",i);
198 }
199 } // Pad loop
200 } // Cathode plane loop
201 //if (fSegmentation->ISector()==2)
202 //printf("Nnew:%d\n\n\n\n",nnew);
203}
204
205
237c933d 206AliRICHChamber& AliRICHChamber::operator=(const AliRICHChamber& rhs)
207{
208// Assignment operator
209 return *this;
210
211}
2e5f0f7b 212
213
4faf338d 214void AliRICHChamber::GenerateTresholds()
215{
216
217// Generates random treshold charges for all pads
218
219 //printf("Pads : %dx%d\n",fSegmentation->Npx(),fSegmentation->Npy());
220
221 Int_t nx = fSegmentation->Npx();
222 Int_t ny = fSegmentation->Npy();
223
224 //Int_t size=nx*ny;
225
226 //printf("Size:%d\n",size);
227
228 fTresh = new AliRICHTresholdMap(fSegmentation);
229
230 //printf("Generating tresholds...\n");
231
232 for(Int_t i=-nx/2;i<nx/2;i++)
233 {
234 for(Int_t j=-ny/2;j<ny/2;j++)
235 {
236 Int_t pedestal = (Int_t)(gRandom->Gaus(50, 10));
237 //Int_t pedestal =0;
238 fTresh->SetHit(i,j,pedestal);
239 //printf("Pad %d %d has pedestal %d.\n",i,j,pedestal);
240 }
241 }
242
243}