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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 | $Log$ | |
18 | */ | |
19 | ||
20 | ||
21 | #include "AliRICHChamber.h" | |
22 | #include "AliRun.h" | |
23 | #include <TLorentzVector.h> | |
24 | #include <TParticle.h> | |
25 | #include <TRandom.h> | |
26 | ||
27 | ClassImp(AliRICHChamber) | |
28 | ||
29 | AliRICHChamber::AliRICHChamber() | |
30 | { | |
31 | fSegmentation = 0; | |
32 | fResponse= 0; | |
33 | fGeometry= 0; | |
34 | frMin=0.1; | |
35 | frMax=140; | |
36 | fnsec=1; | |
37 | } | |
38 | ||
39 | // | |
40 | // Get reference to response model | |
41 | AliRICHResponse* AliRICHChamber::GetResponseModel() | |
42 | { | |
43 | return fResponse; | |
44 | } | |
45 | ||
46 | // Configure response model | |
47 | void AliRICHChamber::ResponseModel(AliRICHResponse* thisResponse) | |
48 | { | |
49 | fResponse=thisResponse; | |
50 | } | |
51 | ||
52 | void AliRICHChamber::Init() | |
53 | { | |
54 | fSegmentation->Init(this); | |
55 | } | |
56 | ||
57 | void AliRICHChamber::LocaltoGlobal(Float_t pos[3],Float_t Globalpos[3]) | |
58 | { | |
59 | ||
60 | Double_t *fMatrix; | |
61 | fMatrix = fChamberMatrix->GetMatrix(); | |
62 | Globalpos[0]=pos[0]*fMatrix[0]+pos[1]*fMatrix[3]+pos[2]*fMatrix[6]; | |
63 | Globalpos[1]=pos[0]*fMatrix[1]+pos[1]*fMatrix[4]+pos[2]*fMatrix[7]; | |
64 | Globalpos[2]=pos[0]*fMatrix[2]+pos[1]*fMatrix[5]+pos[2]*fMatrix[8]; | |
65 | Globalpos[0]+=fChamberTrans[0]; | |
66 | Globalpos[1]+=fChamberTrans[1]; | |
67 | Globalpos[2]+=fChamberTrans[2]; | |
68 | } | |
69 | ||
70 | void AliRICHChamber::GlobaltoLocal(Float_t pos[3],Float_t Localpos[3]) | |
71 | { | |
72 | ||
73 | Double_t *fMatrixOrig; | |
74 | TMatrix fMatrixCopy(3,3); | |
75 | fMatrixOrig = fChamberMatrix->GetMatrix(); | |
76 | for(Int_t i=0;i<3;i++) | |
77 | { | |
78 | for(Int_t j=0;j<3;j++) | |
79 | fMatrixCopy(j,i)=fMatrixOrig[j+3*i]; | |
80 | } | |
81 | fMatrixCopy.Invert(); | |
82 | //Int_t elements=fMatrixCopy.GetNoElements(); | |
83 | //printf("Elements:%d\n",elements); | |
84 | //fMatrixOrig= (Double_t*) fMatrixCopy; | |
85 | Localpos[0] = pos[0] - fChamberTrans[0]; | |
86 | Localpos[1] = pos[1] - fChamberTrans[1]; | |
87 | Localpos[2] = pos[2] - fChamberTrans[2]; | |
88 | //printf("r1:%f, r2:%f, r3:%f\n",Localpos[0],Localpos[1],Localpos[2]); | |
89 | //printf("t1:%f t2:%f t3:%f\n",fChamberTrans[0],fChamberTrans[1],fChamberTrans[2]); | |
90 | Localpos[0]=Localpos[0]*fMatrixCopy(0,0)+Localpos[1]*fMatrixCopy(0,1)+Localpos[2]*fMatrixCopy(0,2); | |
91 | Localpos[1]=Localpos[0]*fMatrixCopy(1,0)+Localpos[1]*fMatrixCopy(1,1)+Localpos[2]*fMatrixCopy(1,2); | |
92 | Localpos[2]=Localpos[0]*fMatrixCopy(2,0)+Localpos[1]*fMatrixCopy(2,1)+Localpos[2]*fMatrixCopy(2,2); | |
93 | //Localpos[0]-=fChamberTrans[0]; | |
94 | //Localpos[1]-=fChamberTrans[1]; | |
95 | //Localpos[2]-=fChamberTrans[2]; | |
96 | } | |
97 | ||
98 | ||
99 | void AliRICHChamber::DisIntegration(Float_t eloss, Float_t xhit, Float_t yhit, | |
100 | Int_t& nnew,Float_t newclust[6][500],Response_t res) | |
101 | { | |
102 | // | |
103 | // Generates pad hits (simulated cluster) | |
104 | // using the segmentation and the response model | |
105 | ||
106 | Float_t dx, dy; | |
107 | Float_t local[3]; | |
108 | //Float_t source[3]; | |
109 | Float_t global[3]; | |
110 | // | |
111 | // Width of the integration area | |
112 | // | |
113 | dx=(fResponse->SigmaIntegration())*(fResponse->ChargeSpreadX()); | |
114 | dy=(fResponse->SigmaIntegration())*(fResponse->ChargeSpreadY()); | |
115 | // | |
116 | // Get pulse height from energy loss and generate feedback photons | |
117 | Float_t qtot=0; | |
118 | ||
119 | local[0]=xhit; | |
120 | // z-position of the wires relative to the RICH mother volume | |
121 | // (2 mmm before CsI) old value: 6.076 | |
122 | local[1]=1.276 + fGeometry->GetGapThickness()/2 + fGeometry->GetProximityGapThickness() - .39; | |
123 | //printf("AliRICHChamber feedback origin:%f",local[1]); | |
124 | local[2]=yhit; | |
125 | ||
126 | LocaltoGlobal(local,global); | |
127 | ||
128 | Int_t Nfp=0; | |
129 | ||
130 | if (res==mip) { | |
131 | qtot = fResponse->IntPH(eloss); | |
132 | Nfp = fResponse->FeedBackPhotons(global,qtot); | |
133 | } else if (res==cerenkov) { | |
134 | qtot = fResponse->IntPH(); | |
135 | Nfp = fResponse->FeedBackPhotons(global,qtot); | |
136 | } | |
137 | ||
138 | //printf("Feedbacks:%d\n",Nfp); | |
139 | ||
140 | // | |
141 | // Loop Over Pads | |
142 | ||
143 | Float_t qcheck=0, qp=0; | |
144 | ||
145 | nnew=0; | |
146 | for (Int_t i=1; i<=fnsec; i++) { | |
147 | qcheck=0; | |
148 | for (fSegmentation->FirstPad(xhit, yhit, dx, dy); | |
149 | fSegmentation->MorePads(); | |
150 | fSegmentation->NextPad()) | |
151 | { | |
152 | qp= fResponse->IntXY(fSegmentation); | |
153 | qp= TMath::Abs(qp); | |
154 | ||
155 | //printf("Qp:%f\n",qp); | |
156 | ||
157 | if (qp > 1.e-4) { | |
158 | qcheck+=qp; | |
159 | // | |
160 | // --- store signal information | |
161 | newclust[0][nnew]=qtot; | |
162 | newclust[1][nnew]=fSegmentation->Ix(); | |
163 | newclust[2][nnew]=fSegmentation->Iy(); | |
164 | newclust[3][nnew]=qp * qtot; | |
165 | newclust[4][nnew]=fSegmentation->ISector(); | |
166 | newclust[5][nnew]=(Float_t) i; | |
167 | nnew++; | |
168 | //printf("Newcluster:%d\n",i); | |
169 | } | |
170 | } // Pad loop | |
171 | } // Cathode plane loop | |
172 | //if (fSegmentation->ISector()==2) | |
173 | //printf("Nnew:%d\n\n\n\n",nnew); | |
174 | } | |
175 | ||
176 | ||
177 | ||
178 |