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a9e2aefa | 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 | **************************************************************************/ | |
2682e810 | 15 | |
88cb7938 | 16 | /* $Id$ */ |
a9e2aefa | 17 | |
681d067b | 18 | // --- MUON includes --- |
a9e2aefa | 19 | #include "AliMUONChamber.h" |
a9e2aefa | 20 | |
681d067b | 21 | // --- ROOT includes --- |
22 | ||
23 | #include "TRandom.h" | |
a9e2aefa | 24 | #include "TMath.h" |
681d067b | 25 | |
a9e2aefa | 26 | ClassImp(AliMUONChamber) |
27 | ||
d81db581 | 28 | AliMUONChamber::AliMUONChamber() |
29 | { | |
30 | // Default constructor | |
0e9bce78 | 31 | fSegmentation = 0; |
d81db581 | 32 | fResponse=0; |
33 | fnsec=1; | |
34 | fReconstruction=0; | |
35 | fId=0; | |
681d067b | 36 | // to avoid mistakes if ChargeCorrelInit is not called |
681d067b | 37 | fCurrentCorrel =1; |
d81db581 | 38 | } |
39 | ||
40 | AliMUONChamber::AliMUONChamber(Int_t id) | |
a9e2aefa | 41 | { |
d81db581 | 42 | // Construtor with chamber id |
a9e2aefa | 43 | fSegmentation = new TObjArray(2); |
cd4df77b | 44 | fSegmentation->AddAt(0,0); |
45 | fSegmentation->AddAt(0,1); | |
a9e2aefa | 46 | fResponse=0; |
47 | fnsec=1; | |
48 | fReconstruction=0; | |
d81db581 | 49 | fId=id; |
681d067b | 50 | // to avoid mistakes if ChargeCorrelInit is not called |
681d067b | 51 | fCurrentCorrel =1; |
a9e2aefa | 52 | } |
53 | ||
54 | AliMUONChamber::~AliMUONChamber() | |
55 | { | |
d81db581 | 56 | // Destructor |
c2c0190f | 57 | if (fSegmentation) { |
58 | fSegmentation->Delete(); | |
59 | delete fSegmentation; | |
60 | } | |
a9e2aefa | 61 | } |
62 | ||
390151b8 | 63 | AliMUONChamber::AliMUONChamber(const AliMUONChamber& rChamber):TObject(rChamber) |
64 | { | |
65 | // Dummy copy constructor | |
66 | ; | |
67 | } | |
a9e2aefa | 68 | |
69 | ||
70 | void AliMUONChamber::Init() | |
71 | { | |
72 | // Initalisation .. | |
73 | // | |
74 | // ... for chamber segmentation | |
2682e810 | 75 | //PH if ((*fSegmentation)[0]) |
76 | //PH ((AliSegmentation *) (*fSegmentation)[0])->Init(fId); | |
77 | if (fSegmentation->At(0)) | |
78 | ((AliSegmentation *) fSegmentation->At(0))->Init(fId); | |
a9e2aefa | 79 | |
80 | if (fnsec==2) { | |
2682e810 | 81 | //PH if ((*fSegmentation)[1]) |
82 | //PH ((AliSegmentation *) (*fSegmentation)[1])->Init(fId); | |
83 | if (fSegmentation->At(1)) | |
84 | ((AliSegmentation *) fSegmentation->At(1))->Init(fId); | |
a9e2aefa | 85 | } |
86 | } | |
87 | ||
88 | Int_t AliMUONChamber::SigGenCond(Float_t x, Float_t y, Float_t z) | |
89 | { | |
90 | // Ask segmentation if signal should be generated | |
91 | if (fnsec==1) { | |
2682e810 | 92 | //PH return ((AliSegmentation*) (*fSegmentation)[0]) |
93 | return ((AliSegmentation*) fSegmentation->At(0)) | |
a9e2aefa | 94 | ->SigGenCond(x, y, z) ; |
95 | } else { | |
2682e810 | 96 | //PH return (((AliSegmentation*) (*fSegmentation)[0]) |
97 | return (((AliSegmentation*) fSegmentation->At(0)) | |
a9e2aefa | 98 | ->SigGenCond(x, y, z)) || |
2682e810 | 99 | //PH (((AliSegmentation*) (*fSegmentation)[1]) |
100 | (((AliSegmentation*) fSegmentation->At(1)) | |
a9e2aefa | 101 | ->SigGenCond(x, y, z)) ; |
102 | } | |
103 | } | |
104 | ||
105 | ||
106 | void AliMUONChamber::SigGenInit(Float_t x, Float_t y, Float_t z) | |
107 | { | |
108 | // | |
109 | // Initialisation of segmentation for hit | |
110 | // | |
111 | if (fnsec==1) { | |
2682e810 | 112 | //PH ((AliSegmentation*) (*fSegmentation)[0])->SigGenInit(x, y, z) ; |
113 | ((AliSegmentation*) fSegmentation->At(0))->SigGenInit(x, y, z) ; | |
a9e2aefa | 114 | } else { |
2682e810 | 115 | //PH ((AliSegmentation*) (*fSegmentation)[0])->SigGenInit(x, y, z) ; |
116 | //PH ((AliSegmentation*) (*fSegmentation)[1])->SigGenInit(x, y, z) ; | |
117 | ((AliSegmentation*) fSegmentation->At(0))->SigGenInit(x, y, z) ; | |
118 | ((AliSegmentation*) fSegmentation->At(1))->SigGenInit(x, y, z) ; | |
a9e2aefa | 119 | } |
120 | } | |
121 | ||
681d067b | 122 | void AliMUONChamber::ChargeCorrelationInit() { |
123 | // Initialisation of charge correlation for current hit | |
124 | // the value is stored, and then used by Disintegration | |
125 | if (fnsec==1) | |
126 | fCurrentCorrel =1; | |
127 | else | |
128 | // exponential is here to avoid eventual problems in 0 | |
16d57990 | 129 | // factor 2 because chargecorrel is q1/q2 and not q1/qtrue |
130 | fCurrentCorrel = TMath::Exp(gRandom->Gaus(0,fResponse->ChargeCorrel()/2)); | |
681d067b | 131 | } |
132 | ||
24fe6002 | 133 | void AliMUONChamber::DisIntegration(Float_t eloss, Float_t /*tof*/, |
802a864d | 134 | Float_t xhit, Float_t yhit, Float_t zhit, |
a9e2aefa | 135 | Int_t& nnew,Float_t newclust[6][500]) |
136 | { | |
137 | // | |
138 | // Generates pad hits (simulated cluster) | |
139 | // using the segmentation and the response model | |
140 | Float_t dx, dy; | |
141 | // | |
142 | // Width of the integration area | |
143 | // | |
144 | dx=fResponse->SigmaIntegration()*fResponse->ChargeSpreadX(); | |
145 | dy=fResponse->SigmaIntegration()*fResponse->ChargeSpreadY(); | |
146 | // | |
147 | // Get pulse height from energy loss | |
148 | Float_t qtot = fResponse->IntPH(eloss); | |
149 | // | |
150 | // Loop Over Pads | |
151 | ||
152 | Float_t qcheck=0, qp; | |
153 | nnew=0; | |
ef495f13 | 154 | |
681d067b | 155 | // Cathode plane loop |
a9e2aefa | 156 | for (Int_t i=1; i<=fnsec; i++) { |
157 | qcheck=0; | |
681d067b | 158 | Float_t qcath = qtot * (i==1? fCurrentCorrel : 1/fCurrentCorrel); |
a30a000f | 159 | AliSegmentation * segmentation= |
2682e810 | 160 | //PH (AliSegmentation *) (*fSegmentation)[i-1]; |
161 | (AliSegmentation *) fSegmentation->At(i-1); | |
802a864d | 162 | for (segmentation->FirstPad(xhit, yhit, zhit, dx, dy); |
a9e2aefa | 163 | segmentation->MorePads(); |
164 | segmentation->NextPad()) | |
165 | { | |
166 | qp=fResponse->IntXY(segmentation); | |
167 | qp=TMath::Abs(qp); | |
a9e2aefa | 168 | // |
169 | // | |
170 | if (qp > 1.e-4) { | |
681d067b | 171 | qcheck+=qp*qcath; |
a9e2aefa | 172 | // |
173 | // --- store signal information | |
681d067b | 174 | newclust[0][nnew]=qcath; // total charge |
a9e2aefa | 175 | newclust[1][nnew]=segmentation->Ix(); // ix-position of pad |
176 | newclust[2][nnew]=segmentation->Iy(); // iy-position of pad | |
681d067b | 177 | newclust[3][nnew]=qp * qcath; // charge on pad |
a9e2aefa | 178 | newclust[4][nnew]=segmentation->ISector(); // sector id |
179 | newclust[5][nnew]=(Float_t) i; // counter | |
180 | nnew++; | |
681d067b | 181 | // if (i==2) printf("\n i, nnew, q %d %d %f", i, nnew, qp*qcath); |
ef495f13 | 182 | |
a9e2aefa | 183 | } |
184 | } // Pad loop | |
ef495f13 | 185 | |
a9e2aefa | 186 | } // Cathode plane loop |
187 | } | |
188 | ||
189 | ||
190 | ||
24fe6002 | 191 | void AliMUONChamber::InitGeo(Float_t /*zpos*/) |
a9e2aefa | 192 | { |
193 | // sensitive gas gap | |
194 | fdGas= 0.5; | |
195 | // 3% radiation length of aluminum (X0=8.9 cm) | |
196 | fdAlu= 3.0/100*8.9; | |
197 | } | |
198 | ||
199 | ||
24fe6002 | 200 | AliMUONChamber & AliMUONChamber::operator =(const AliMUONChamber& /*rhs*/) |
a9e2aefa | 201 | { |
202 | // Dummy assignment operator | |
203 | return *this; | |
204 | } |