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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" |
d1cd2474 | 20 | #include "AliMUONChamberGeometry.h" |
a9e2aefa | 21 | |
681d067b | 22 | // --- ROOT includes --- |
23 | ||
24 | #include "TRandom.h" | |
a9e2aefa | 25 | #include "TMath.h" |
681d067b | 26 | |
a9e2aefa | 27 | ClassImp(AliMUONChamber) |
28 | ||
d81db581 | 29 | AliMUONChamber::AliMUONChamber() |
30 | { | |
31 | // Default constructor | |
0e9bce78 | 32 | fSegmentation = 0; |
d81db581 | 33 | fResponse=0; |
34 | fnsec=1; | |
35 | fReconstruction=0; | |
d1cd2474 | 36 | fGeometry = 0; |
37 | ||
d81db581 | 38 | fId=0; |
681d067b | 39 | // to avoid mistakes if ChargeCorrelInit is not called |
681d067b | 40 | fCurrentCorrel =1; |
d81db581 | 41 | } |
42 | ||
43 | AliMUONChamber::AliMUONChamber(Int_t id) | |
a9e2aefa | 44 | { |
d81db581 | 45 | // Construtor with chamber id |
a9e2aefa | 46 | fSegmentation = new TObjArray(2); |
cd4df77b | 47 | fSegmentation->AddAt(0,0); |
48 | fSegmentation->AddAt(0,1); | |
a9e2aefa | 49 | fResponse=0; |
50 | fnsec=1; | |
51 | fReconstruction=0; | |
d81db581 | 52 | fId=id; |
c6df4ef2 | 53 | fGeometry = new AliMUONChamberGeometry(fId); |
681d067b | 54 | // to avoid mistakes if ChargeCorrelInit is not called |
681d067b | 55 | fCurrentCorrel =1; |
a9e2aefa | 56 | } |
57 | ||
58 | AliMUONChamber::~AliMUONChamber() | |
59 | { | |
d81db581 | 60 | // Destructor |
c2c0190f | 61 | if (fSegmentation) { |
62 | fSegmentation->Delete(); | |
63 | delete fSegmentation; | |
64 | } | |
c6df4ef2 | 65 | delete fGeometry; |
a9e2aefa | 66 | } |
67 | ||
390151b8 | 68 | AliMUONChamber::AliMUONChamber(const AliMUONChamber& rChamber):TObject(rChamber) |
69 | { | |
70 | // Dummy copy constructor | |
71 | ; | |
72 | } | |
a9e2aefa | 73 | |
74 | ||
d1cd2474 | 75 | Bool_t AliMUONChamber::IsSensId(Int_t volId) const |
76 | { | |
77 | // Returns true if the volume specified by volId is in the list | |
78 | // of sesitive volumes for this chamber | |
79 | ||
80 | return fGeometry->IsSensitiveVolume(volId); | |
81 | } | |
82 | ||
a9e2aefa | 83 | void AliMUONChamber::Init() |
84 | { | |
85 | // Initalisation .. | |
86 | // | |
87 | // ... for chamber segmentation | |
2682e810 | 88 | //PH if ((*fSegmentation)[0]) |
89 | //PH ((AliSegmentation *) (*fSegmentation)[0])->Init(fId); | |
90 | if (fSegmentation->At(0)) | |
91 | ((AliSegmentation *) fSegmentation->At(0))->Init(fId); | |
a9e2aefa | 92 | |
93 | if (fnsec==2) { | |
2682e810 | 94 | //PH if ((*fSegmentation)[1]) |
95 | //PH ((AliSegmentation *) (*fSegmentation)[1])->Init(fId); | |
96 | if (fSegmentation->At(1)) | |
97 | ((AliSegmentation *) fSegmentation->At(1))->Init(fId); | |
a9e2aefa | 98 | } |
99 | } | |
100 | ||
101 | Int_t AliMUONChamber::SigGenCond(Float_t x, Float_t y, Float_t z) | |
102 | { | |
103 | // Ask segmentation if signal should be generated | |
104 | if (fnsec==1) { | |
2682e810 | 105 | //PH return ((AliSegmentation*) (*fSegmentation)[0]) |
106 | return ((AliSegmentation*) fSegmentation->At(0)) | |
a9e2aefa | 107 | ->SigGenCond(x, y, z) ; |
108 | } else { | |
2682e810 | 109 | //PH return (((AliSegmentation*) (*fSegmentation)[0]) |
110 | return (((AliSegmentation*) fSegmentation->At(0)) | |
a9e2aefa | 111 | ->SigGenCond(x, y, z)) || |
2682e810 | 112 | //PH (((AliSegmentation*) (*fSegmentation)[1]) |
113 | (((AliSegmentation*) fSegmentation->At(1)) | |
a9e2aefa | 114 | ->SigGenCond(x, y, z)) ; |
115 | } | |
116 | } | |
117 | ||
118 | ||
119 | void AliMUONChamber::SigGenInit(Float_t x, Float_t y, Float_t z) | |
120 | { | |
121 | // | |
122 | // Initialisation of segmentation for hit | |
123 | // | |
124 | if (fnsec==1) { | |
2682e810 | 125 | //PH ((AliSegmentation*) (*fSegmentation)[0])->SigGenInit(x, y, z) ; |
126 | ((AliSegmentation*) fSegmentation->At(0))->SigGenInit(x, y, z) ; | |
a9e2aefa | 127 | } else { |
2682e810 | 128 | //PH ((AliSegmentation*) (*fSegmentation)[0])->SigGenInit(x, y, z) ; |
129 | //PH ((AliSegmentation*) (*fSegmentation)[1])->SigGenInit(x, y, z) ; | |
130 | ((AliSegmentation*) fSegmentation->At(0))->SigGenInit(x, y, z) ; | |
131 | ((AliSegmentation*) fSegmentation->At(1))->SigGenInit(x, y, z) ; | |
a9e2aefa | 132 | } |
133 | } | |
134 | ||
681d067b | 135 | void AliMUONChamber::ChargeCorrelationInit() { |
136 | // Initialisation of charge correlation for current hit | |
137 | // the value is stored, and then used by Disintegration | |
138 | if (fnsec==1) | |
139 | fCurrentCorrel =1; | |
140 | else | |
141 | // exponential is here to avoid eventual problems in 0 | |
16d57990 | 142 | // factor 2 because chargecorrel is q1/q2 and not q1/qtrue |
143 | fCurrentCorrel = TMath::Exp(gRandom->Gaus(0,fResponse->ChargeCorrel()/2)); | |
681d067b | 144 | } |
145 | ||
24fe6002 | 146 | void AliMUONChamber::DisIntegration(Float_t eloss, Float_t /*tof*/, |
802a864d | 147 | Float_t xhit, Float_t yhit, Float_t zhit, |
a9e2aefa | 148 | Int_t& nnew,Float_t newclust[6][500]) |
149 | { | |
150 | // | |
151 | // Generates pad hits (simulated cluster) | |
152 | // using the segmentation and the response model | |
153 | Float_t dx, dy; | |
154 | // | |
155 | // Width of the integration area | |
156 | // | |
157 | dx=fResponse->SigmaIntegration()*fResponse->ChargeSpreadX(); | |
158 | dy=fResponse->SigmaIntegration()*fResponse->ChargeSpreadY(); | |
159 | // | |
160 | // Get pulse height from energy loss | |
161 | Float_t qtot = fResponse->IntPH(eloss); | |
162 | // | |
163 | // Loop Over Pads | |
164 | ||
3194a39e | 165 | Float_t qp; |
a9e2aefa | 166 | nnew=0; |
ef495f13 | 167 | |
681d067b | 168 | // Cathode plane loop |
a9e2aefa | 169 | for (Int_t i=1; i<=fnsec; i++) { |
681d067b | 170 | Float_t qcath = qtot * (i==1? fCurrentCorrel : 1/fCurrentCorrel); |
a30a000f | 171 | AliSegmentation * segmentation= |
2682e810 | 172 | //PH (AliSegmentation *) (*fSegmentation)[i-1]; |
173 | (AliSegmentation *) fSegmentation->At(i-1); | |
802a864d | 174 | for (segmentation->FirstPad(xhit, yhit, zhit, dx, dy); |
a9e2aefa | 175 | segmentation->MorePads(); |
176 | segmentation->NextPad()) | |
177 | { | |
178 | qp=fResponse->IntXY(segmentation); | |
179 | qp=TMath::Abs(qp); | |
a9e2aefa | 180 | // |
181 | // | |
3194a39e | 182 | if (qp > 1.e-4) |
183 | { | |
184 | if (nnew >= 500) // Perform a bounds check on nnew since it is assumed | |
185 | // newclust only contains 500 elements. | |
186 | { | |
187 | Error("DisIntegration", "Limit of 500 pad responses reached."); | |
188 | return; | |
189 | }; | |
190 | // | |
191 | // --- store signal information | |
681d067b | 192 | newclust[0][nnew]=qcath; // total charge |
a9e2aefa | 193 | newclust[1][nnew]=segmentation->Ix(); // ix-position of pad |
194 | newclust[2][nnew]=segmentation->Iy(); // iy-position of pad | |
681d067b | 195 | newclust[3][nnew]=qp * qcath; // charge on pad |
a9e2aefa | 196 | newclust[4][nnew]=segmentation->ISector(); // sector id |
197 | newclust[5][nnew]=(Float_t) i; // counter | |
198 | nnew++; | |
ef495f13 | 199 | |
a9e2aefa | 200 | } |
201 | } // Pad loop | |
ef495f13 | 202 | |
a9e2aefa | 203 | } // Cathode plane loop |
204 | } | |
205 | ||
206 | ||
207 | ||
24fe6002 | 208 | void AliMUONChamber::InitGeo(Float_t /*zpos*/) |
a9e2aefa | 209 | { |
210 | // sensitive gas gap | |
211 | fdGas= 0.5; | |
212 | // 3% radiation length of aluminum (X0=8.9 cm) | |
213 | fdAlu= 3.0/100*8.9; | |
214 | } | |
215 | ||
216 | ||
24fe6002 | 217 | AliMUONChamber & AliMUONChamber::operator =(const AliMUONChamber& /*rhs*/) |
a9e2aefa | 218 | { |
219 | // Dummy assignment operator | |
220 | return *this; | |
221 | } |