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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 | |
30178c30 | 18 | // --- ROOT includes --- |
19 | #include <TRandom.h> | |
20 | #include <TMath.h> | |
21 | ||
681d067b | 22 | // --- MUON includes --- |
a9e2aefa | 23 | #include "AliMUONChamber.h" |
d1cd2474 | 24 | #include "AliMUONChamberGeometry.h" |
d12a7158 | 25 | #include "AliLog.h" |
a9e2aefa | 26 | |
a9e2aefa | 27 | ClassImp(AliMUONChamber) |
28 | ||
30178c30 | 29 | AliMUONChamber::AliMUONChamber() |
30 | : TObject(), | |
31 | fId(0), | |
32 | fdGas(0.), | |
33 | fdAlu(0.), | |
34 | fZ(0.), | |
35 | fnsec(1), | |
36 | frMin(0.), | |
37 | frMax(0.), | |
38 | fCurrentCorrel(1), // to avoid mistakes if ChargeCorrelInit is not called | |
39 | fSegmentation(0), | |
40 | fReconstruction(0), | |
41 | fResponse(0), | |
42 | fGeometry(0) | |
d81db581 | 43 | { |
44 | // Default constructor | |
d81db581 | 45 | } |
46 | ||
30178c30 | 47 | AliMUONChamber::AliMUONChamber(Int_t id) |
48 | : TObject(), | |
49 | fId(id), | |
50 | fdGas(0.), | |
51 | fdAlu(0.), | |
52 | fZ(0.), | |
53 | fnsec(1), | |
54 | frMin(0.), | |
55 | frMax(0.), | |
56 | fCurrentCorrel(1), // to avoid mistakes if ChargeCorrelInit is not called | |
57 | fSegmentation(0), | |
58 | fReconstruction(0), | |
59 | fResponse(0), | |
60 | fGeometry(0) | |
a9e2aefa | 61 | { |
d81db581 | 62 | // Construtor with chamber id |
a9e2aefa | 63 | fSegmentation = new TObjArray(2); |
cd4df77b | 64 | fSegmentation->AddAt(0,0); |
65 | fSegmentation->AddAt(0,1); | |
30178c30 | 66 | |
c6df4ef2 | 67 | fGeometry = new AliMUONChamberGeometry(fId); |
30178c30 | 68 | } |
69 | ||
70 | AliMUONChamber::AliMUONChamber(const AliMUONChamber& rChamber) | |
71 | : TObject(rChamber) | |
72 | { | |
73 | // Protected copy constructor | |
74 | ||
d12a7158 | 75 | AliFatal("Not implemented."); |
30178c30 | 76 | // Dummy copy constructor |
a9e2aefa | 77 | } |
78 | ||
79 | AliMUONChamber::~AliMUONChamber() | |
80 | { | |
d81db581 | 81 | // Destructor |
c2c0190f | 82 | if (fSegmentation) { |
83 | fSegmentation->Delete(); | |
84 | delete fSegmentation; | |
85 | } | |
c6df4ef2 | 86 | delete fGeometry; |
a9e2aefa | 87 | } |
88 | ||
30178c30 | 89 | AliMUONChamber & AliMUONChamber::operator =(const AliMUONChamber& rhs) |
390151b8 | 90 | { |
30178c30 | 91 | // Protected assignement operator |
a9e2aefa | 92 | |
30178c30 | 93 | if (this == &rhs) return *this; |
94 | ||
d12a7158 | 95 | AliFatal("Not implemented."); |
30178c30 | 96 | |
97 | return *this; | |
98 | } | |
a9e2aefa | 99 | |
d1cd2474 | 100 | Bool_t AliMUONChamber::IsSensId(Int_t volId) const |
101 | { | |
102 | // Returns true if the volume specified by volId is in the list | |
103 | // of sesitive volumes for this chamber | |
104 | ||
105 | return fGeometry->IsSensitiveVolume(volId); | |
106 | } | |
107 | ||
a9e2aefa | 108 | void AliMUONChamber::Init() |
109 | { | |
110 | // Initalisation .. | |
111 | // | |
112 | // ... for chamber segmentation | |
2682e810 | 113 | //PH if ((*fSegmentation)[0]) |
114 | //PH ((AliSegmentation *) (*fSegmentation)[0])->Init(fId); | |
115 | if (fSegmentation->At(0)) | |
116 | ((AliSegmentation *) fSegmentation->At(0))->Init(fId); | |
a9e2aefa | 117 | |
118 | if (fnsec==2) { | |
2682e810 | 119 | //PH if ((*fSegmentation)[1]) |
120 | //PH ((AliSegmentation *) (*fSegmentation)[1])->Init(fId); | |
121 | if (fSegmentation->At(1)) | |
122 | ((AliSegmentation *) fSegmentation->At(1))->Init(fId); | |
a9e2aefa | 123 | } |
124 | } | |
125 | ||
126 | Int_t AliMUONChamber::SigGenCond(Float_t x, Float_t y, Float_t z) | |
127 | { | |
128 | // Ask segmentation if signal should be generated | |
129 | if (fnsec==1) { | |
2682e810 | 130 | //PH return ((AliSegmentation*) (*fSegmentation)[0]) |
131 | return ((AliSegmentation*) fSegmentation->At(0)) | |
a9e2aefa | 132 | ->SigGenCond(x, y, z) ; |
133 | } else { | |
2682e810 | 134 | //PH return (((AliSegmentation*) (*fSegmentation)[0]) |
135 | return (((AliSegmentation*) fSegmentation->At(0)) | |
a9e2aefa | 136 | ->SigGenCond(x, y, z)) || |
2682e810 | 137 | //PH (((AliSegmentation*) (*fSegmentation)[1]) |
138 | (((AliSegmentation*) fSegmentation->At(1)) | |
a9e2aefa | 139 | ->SigGenCond(x, y, z)) ; |
140 | } | |
141 | } | |
142 | ||
143 | ||
144 | void AliMUONChamber::SigGenInit(Float_t x, Float_t y, Float_t z) | |
145 | { | |
146 | // | |
147 | // Initialisation of segmentation for hit | |
148 | // | |
149 | if (fnsec==1) { | |
2682e810 | 150 | //PH ((AliSegmentation*) (*fSegmentation)[0])->SigGenInit(x, y, z) ; |
151 | ((AliSegmentation*) fSegmentation->At(0))->SigGenInit(x, y, z) ; | |
a9e2aefa | 152 | } else { |
2682e810 | 153 | //PH ((AliSegmentation*) (*fSegmentation)[0])->SigGenInit(x, y, z) ; |
154 | //PH ((AliSegmentation*) (*fSegmentation)[1])->SigGenInit(x, y, z) ; | |
155 | ((AliSegmentation*) fSegmentation->At(0))->SigGenInit(x, y, z) ; | |
156 | ((AliSegmentation*) fSegmentation->At(1))->SigGenInit(x, y, z) ; | |
a9e2aefa | 157 | } |
158 | } | |
159 | ||
681d067b | 160 | void AliMUONChamber::ChargeCorrelationInit() { |
161 | // Initialisation of charge correlation for current hit | |
162 | // the value is stored, and then used by Disintegration | |
163 | if (fnsec==1) | |
164 | fCurrentCorrel =1; | |
165 | else | |
166 | // exponential is here to avoid eventual problems in 0 | |
16d57990 | 167 | // factor 2 because chargecorrel is q1/q2 and not q1/qtrue |
168 | fCurrentCorrel = TMath::Exp(gRandom->Gaus(0,fResponse->ChargeCorrel()/2)); | |
681d067b | 169 | } |
170 | ||
24fe6002 | 171 | void AliMUONChamber::DisIntegration(Float_t eloss, Float_t /*tof*/, |
802a864d | 172 | Float_t xhit, Float_t yhit, Float_t zhit, |
a9e2aefa | 173 | Int_t& nnew,Float_t newclust[6][500]) |
174 | { | |
175 | // | |
176 | // Generates pad hits (simulated cluster) | |
177 | // using the segmentation and the response model | |
178 | Float_t dx, dy; | |
179 | // | |
180 | // Width of the integration area | |
181 | // | |
182 | dx=fResponse->SigmaIntegration()*fResponse->ChargeSpreadX(); | |
183 | dy=fResponse->SigmaIntegration()*fResponse->ChargeSpreadY(); | |
184 | // | |
185 | // Get pulse height from energy loss | |
186 | Float_t qtot = fResponse->IntPH(eloss); | |
187 | // | |
188 | // Loop Over Pads | |
189 | ||
3194a39e | 190 | Float_t qp; |
a9e2aefa | 191 | nnew=0; |
ef495f13 | 192 | |
681d067b | 193 | // Cathode plane loop |
a9e2aefa | 194 | for (Int_t i=1; i<=fnsec; i++) { |
681d067b | 195 | Float_t qcath = qtot * (i==1? fCurrentCorrel : 1/fCurrentCorrel); |
a30a000f | 196 | AliSegmentation * segmentation= |
2682e810 | 197 | //PH (AliSegmentation *) (*fSegmentation)[i-1]; |
198 | (AliSegmentation *) fSegmentation->At(i-1); | |
802a864d | 199 | for (segmentation->FirstPad(xhit, yhit, zhit, dx, dy); |
a9e2aefa | 200 | segmentation->MorePads(); |
201 | segmentation->NextPad()) | |
202 | { | |
203 | qp=fResponse->IntXY(segmentation); | |
204 | qp=TMath::Abs(qp); | |
a9e2aefa | 205 | // |
206 | // | |
3194a39e | 207 | if (qp > 1.e-4) |
208 | { | |
209 | if (nnew >= 500) // Perform a bounds check on nnew since it is assumed | |
210 | // newclust only contains 500 elements. | |
211 | { | |
d12a7158 | 212 | AliError("Limit of 500 pad responses reached."); |
3194a39e | 213 | return; |
214 | }; | |
215 | // | |
216 | // --- store signal information | |
681d067b | 217 | newclust[0][nnew]=qcath; // total charge |
a9e2aefa | 218 | newclust[1][nnew]=segmentation->Ix(); // ix-position of pad |
219 | newclust[2][nnew]=segmentation->Iy(); // iy-position of pad | |
681d067b | 220 | newclust[3][nnew]=qp * qcath; // charge on pad |
a9e2aefa | 221 | newclust[4][nnew]=segmentation->ISector(); // sector id |
222 | newclust[5][nnew]=(Float_t) i; // counter | |
223 | nnew++; | |
ef495f13 | 224 | |
a9e2aefa | 225 | } |
226 | } // Pad loop | |
ef495f13 | 227 | |
a9e2aefa | 228 | } // Cathode plane loop |
229 | } | |
230 | ||
231 | ||
232 | ||
24fe6002 | 233 | void AliMUONChamber::InitGeo(Float_t /*zpos*/) |
a9e2aefa | 234 | { |
235 | // sensitive gas gap | |
236 | fdGas= 0.5; | |
237 | // 3% radiation length of aluminum (X0=8.9 cm) | |
238 | fdAlu= 3.0/100*8.9; | |
239 | } | |
240 | ||
241 |