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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> | |
a713db22 | 21 | #include "AliRun.h" |
22 | ||
30178c30 | 23 | |
681d067b | 24 | // --- MUON includes --- |
a713db22 | 25 | #include "AliMUON.h" |
a9e2aefa | 26 | #include "AliMUONChamber.h" |
e118b27e | 27 | #include "AliMUONGeometryModule.h" |
a713db22 | 28 | #include "AliMUONHit.h" |
8c343c7c | 29 | #include "AliLog.h" |
a9e2aefa | 30 | |
a9e2aefa | 31 | ClassImp(AliMUONChamber) |
32 | ||
30178c30 | 33 | AliMUONChamber::AliMUONChamber() |
34 | : TObject(), | |
35 | fId(0), | |
36 | fdGas(0.), | |
37 | fdAlu(0.), | |
38 | fZ(0.), | |
30178c30 | 39 | frMin(0.), |
40 | frMax(0.), | |
41 | fCurrentCorrel(1), // to avoid mistakes if ChargeCorrelInit is not called | |
a713db22 | 42 | fSegmentation2(0), |
30178c30 | 43 | fResponse(0), |
a713db22 | 44 | fGeometry(0), |
45 | fMUON(0) | |
d81db581 | 46 | { |
47 | // Default constructor | |
d81db581 | 48 | } |
49 | ||
a713db22 | 50 | //_______________________________________________________ |
30178c30 | 51 | AliMUONChamber::AliMUONChamber(Int_t id) |
52 | : TObject(), | |
53 | fId(id), | |
54 | fdGas(0.), | |
55 | fdAlu(0.), | |
56 | fZ(0.), | |
30178c30 | 57 | frMin(0.), |
58 | frMax(0.), | |
59 | fCurrentCorrel(1), // to avoid mistakes if ChargeCorrelInit is not called | |
a713db22 | 60 | fSegmentation2(0), |
30178c30 | 61 | fResponse(0), |
a713db22 | 62 | fGeometry(0), |
63 | fMUON(0) | |
a9e2aefa | 64 | { |
a713db22 | 65 | |
66 | // muon | |
67 | fMUON = (AliMUON*)gAlice->GetModule("MUON"); | |
68 | if (!fMUON) { | |
69 | AliFatal("MUON detector not defined."); | |
70 | return; | |
71 | } | |
002920d1 | 72 | |
a713db22 | 73 | // new segmentation |
74 | fSegmentation2 = new TObjArray(2); | |
75 | fSegmentation2->AddAt(0,0); | |
76 | fSegmentation2->AddAt(0,1); | |
77 | ||
e118b27e | 78 | fGeometry = new AliMUONGeometryModule(fId); |
a713db22 | 79 | |
30178c30 | 80 | } |
81 | ||
a713db22 | 82 | //_______________________________________________________ |
30178c30 | 83 | AliMUONChamber::AliMUONChamber(const AliMUONChamber& rChamber) |
84 | : TObject(rChamber) | |
85 | { | |
a713db22 | 86 | // Protected copy constructor |
30178c30 | 87 | |
8c343c7c | 88 | AliFatal("Not implemented."); |
a713db22 | 89 | // Dummy copy constructor |
a9e2aefa | 90 | } |
91 | ||
a713db22 | 92 | //_______________________________________________________ |
a9e2aefa | 93 | AliMUONChamber::~AliMUONChamber() |
94 | { | |
a713db22 | 95 | // Destructor |
002920d1 | 96 | |
97 | if (fSegmentation2) { | |
98 | fSegmentation2->Delete(); | |
99 | delete fSegmentation2; | |
c2c0190f | 100 | } |
002920d1 | 101 | |
c6df4ef2 | 102 | delete fGeometry; |
a9e2aefa | 103 | } |
104 | ||
a713db22 | 105 | //_______________________________________________________ |
30178c30 | 106 | AliMUONChamber & AliMUONChamber::operator =(const AliMUONChamber& rhs) |
390151b8 | 107 | { |
a713db22 | 108 | // Protected assignement operator |
a9e2aefa | 109 | |
30178c30 | 110 | if (this == &rhs) return *this; |
111 | ||
8c343c7c | 112 | AliFatal("Not implemented."); |
30178c30 | 113 | |
114 | return *this; | |
115 | } | |
a9e2aefa | 116 | |
a713db22 | 117 | //_______________________________________________________ |
d1cd2474 | 118 | Bool_t AliMUONChamber::IsSensId(Int_t volId) const |
119 | { | |
a713db22 | 120 | // Returns true if the volume specified by volId is in the list |
121 | // of sesitive volumes for this chamber | |
d1cd2474 | 122 | |
123 | return fGeometry->IsSensitiveVolume(volId); | |
124 | } | |
125 | ||
a9e2aefa | 126 | |
a713db22 | 127 | //_____________________________________________________ |
681d067b | 128 | void AliMUONChamber::ChargeCorrelationInit() { |
a713db22 | 129 | // Initialisation of charge correlation for current hit |
130 | // the value is stored, and then used by Disintegration | |
953daa5a | 131 | |
132 | // exponential is here to avoid eventual problems in 0 | |
133 | // factor 2 because chargecorrel is q1/q2 and not q1/qtrue | |
16d57990 | 134 | fCurrentCorrel = TMath::Exp(gRandom->Gaus(0,fResponse->ChargeCorrel()/2)); |
681d067b | 135 | } |
136 | ||
a713db22 | 137 | //_______________________________________________________ |
138 | void AliMUONChamber::InitGeo(Float_t /*zpos*/) | |
139 | { | |
140 | // sensitive gas gap | |
141 | fdGas= 0.5; | |
142 | // 3% radiation length of aluminum (X0=8.9 cm) | |
143 | fdAlu= 3.0/100*8.9; | |
144 | } | |
145 | //_______________________________________________________ | |
146 | // | |
147 | // NEW SEGMENTATION | |
148 | //_______________________________________________________ | |
149 | void AliMUONChamber::Init(Int_t flag) | |
150 | { | |
151 | // Initalisation .. | |
152 | // | |
153 | // ... for chamber segmentation | |
a9e2aefa | 154 | |
a713db22 | 155 | if (!flag) AliFatal("wrong segmentation type."); |
a9e2aefa | 156 | |
a713db22 | 157 | if (fSegmentation2->At(0)) |
158 | ((AliMUONGeometrySegmentation*) fSegmentation2->At(0))->Init(fId); | |
953daa5a | 159 | if (fSegmentation2->At(1)) |
160 | ((AliMUONGeometrySegmentation*) fSegmentation2->At(1))->Init(fId); | |
161 | ||
a713db22 | 162 | } |
190f97ea | 163 | // //_________________________________________________________________ |
164 | // void AliMUONChamber::SigGenInit(AliMUONHit *hit) | |
165 | // { | |
166 | // // | |
167 | // // Initialisation of segmentation for hit | |
168 | // // | |
169 | // Float_t x = hit->X(); | |
170 | // Float_t y = hit->Y(); | |
171 | // Float_t z = hit->Z(); | |
172 | // Int_t id = hit->DetElemId(); | |
173 | ||
953daa5a | 174 | // ((AliMUONGeometrySegmentation*) fSegmentation2->At(0))->SigGenInit(id, x, y, z) ; |
175 | // ((AliMUONGeometrySegmentation*) fSegmentation2->At(1))->SigGenInit(id, x, y, z) ; | |
176 | ||
190f97ea | 177 | // } |
a9e2aefa | 178 | |
a713db22 | 179 | //_______________________________________________________ |
180 | void AliMUONChamber::DisIntegration(AliMUONHit *hit, | |
181 | Int_t& nnew,Float_t newclust[6][500]) | |
182 | { | |
183 | // | |
184 | // Generates pad hits (simulated cluster) | |
185 | // using the segmentation and the response model | |
186 | Float_t dx, dy; | |
187 | ||
188 | Float_t xhit = hit->X(); | |
189 | Float_t yhit = hit->Y(); | |
190 | Float_t zhit = hit->Z(); | |
191 | Int_t id = hit->DetElemId(); | |
192 | Float_t eloss = hit->Eloss(); | |
a9e2aefa | 193 | |
a713db22 | 194 | // |
195 | // Width of the integration area | |
196 | // | |
197 | dx=fResponse->SigmaIntegration()*fResponse->ChargeSpreadX(); | |
198 | dy=fResponse->SigmaIntegration()*fResponse->ChargeSpreadY(); | |
199 | // | |
200 | // Get pulse height from energy loss | |
201 | Float_t qtot = fResponse->IntPH(eloss); | |
202 | // | |
203 | // Loop Over Pads | |
204 | ||
205 | Float_t qp; | |
206 | nnew=0; | |
207 | ||
208 | // Cathode plane loop | |
953daa5a | 209 | for (Int_t i = 1; i <= 2; i++) { |
a713db22 | 210 | Float_t qcath = qtot * (i==1? fCurrentCorrel : 1/fCurrentCorrel); |
211 | ||
212 | AliMUONGeometrySegmentation* segmentation= | |
213 | (AliMUONGeometrySegmentation*) fSegmentation2->At(i-1); | |
214 | ||
215 | for (segmentation->FirstPad(id, xhit, yhit, zhit, dx, dy); | |
216 | segmentation->MorePads(id); | |
217 | segmentation->NextPad(id)) | |
218 | { | |
219 | qp=fResponse->IntXY(id, segmentation); | |
220 | qp=TMath::Abs(qp); | |
221 | // | |
222 | // | |
223 | if (qp > 1.e-4) | |
224 | { | |
225 | if (nnew >= 500) // Perform a bounds check on nnew since it is assumed | |
226 | // newclust only contains 500 elements. | |
227 | { | |
228 | AliError("Limit of 500 pad responses reached."); | |
229 | return; | |
230 | }; | |
231 | // | |
232 | // --- store signal information | |
233 | newclust[0][nnew]=qcath; // total charge | |
234 | newclust[1][nnew]=segmentation->Ix(); // ix-position of pad | |
235 | newclust[2][nnew]=segmentation->Iy(); // iy-position of pad | |
236 | newclust[3][nnew]=qp * qcath; // charge on pad | |
237 | newclust[4][nnew]=segmentation->ISector(); // sector id | |
238 | newclust[5][nnew]=(Float_t) i; // counter | |
239 | nnew++; | |
240 | ||
241 | } | |
242 | } // Pad loop | |
243 | } // Cathode plane loop | |
244 | } |