]>
Commit | Line | Data |
---|---|---|
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 | /* $Id$ */ | |
17 | ||
18 | // --- ROOT includes --- | |
19 | #include <TRandom.h> | |
20 | #include <TMath.h> | |
21 | #include "AliRun.h" | |
22 | ||
23 | ||
24 | // --- MUON includes --- | |
25 | #include "AliMUON.h" | |
26 | #include "AliMUONChamber.h" | |
27 | #include "AliMUONGeometryModule.h" | |
28 | #include "AliMUONHit.h" | |
29 | #include "AliLog.h" | |
30 | ||
31 | ClassImp(AliMUONChamber) | |
32 | ||
33 | AliMUONChamber::AliMUONChamber() | |
34 | : TObject(), | |
35 | fId(0), | |
36 | fdGas(0.), | |
37 | fdAlu(0.), | |
38 | fZ(0.), | |
39 | fnsec(1), | |
40 | frMin(0.), | |
41 | frMax(0.), | |
42 | fCurrentCorrel(1), // to avoid mistakes if ChargeCorrelInit is not called | |
43 | fSegmentation2(0), | |
44 | fResponse(0), | |
45 | fGeometry(0), | |
46 | fMUON(0) | |
47 | { | |
48 | // Default constructor | |
49 | } | |
50 | ||
51 | //_______________________________________________________ | |
52 | AliMUONChamber::AliMUONChamber(Int_t id) | |
53 | : TObject(), | |
54 | fId(id), | |
55 | fdGas(0.), | |
56 | fdAlu(0.), | |
57 | fZ(0.), | |
58 | fnsec(1), | |
59 | frMin(0.), | |
60 | frMax(0.), | |
61 | fCurrentCorrel(1), // to avoid mistakes if ChargeCorrelInit is not called | |
62 | fSegmentation2(0), | |
63 | fResponse(0), | |
64 | fGeometry(0), | |
65 | fMUON(0) | |
66 | { | |
67 | ||
68 | // muon | |
69 | fMUON = (AliMUON*)gAlice->GetModule("MUON"); | |
70 | if (!fMUON) { | |
71 | AliFatal("MUON detector not defined."); | |
72 | return; | |
73 | } | |
74 | ||
75 | // new segmentation | |
76 | fSegmentation2 = new TObjArray(2); | |
77 | fSegmentation2->AddAt(0,0); | |
78 | fSegmentation2->AddAt(0,1); | |
79 | ||
80 | fGeometry = new AliMUONGeometryModule(fId); | |
81 | ||
82 | } | |
83 | ||
84 | //_______________________________________________________ | |
85 | AliMUONChamber::AliMUONChamber(const AliMUONChamber& rChamber) | |
86 | : TObject(rChamber) | |
87 | { | |
88 | // Protected copy constructor | |
89 | ||
90 | AliFatal("Not implemented."); | |
91 | // Dummy copy constructor | |
92 | } | |
93 | ||
94 | //_______________________________________________________ | |
95 | AliMUONChamber::~AliMUONChamber() | |
96 | { | |
97 | // Destructor | |
98 | ||
99 | if (fSegmentation2) { | |
100 | fSegmentation2->Delete(); | |
101 | delete fSegmentation2; | |
102 | } | |
103 | ||
104 | delete fGeometry; | |
105 | } | |
106 | ||
107 | //_______________________________________________________ | |
108 | AliMUONChamber & AliMUONChamber::operator =(const AliMUONChamber& rhs) | |
109 | { | |
110 | // Protected assignement operator | |
111 | ||
112 | if (this == &rhs) return *this; | |
113 | ||
114 | AliFatal("Not implemented."); | |
115 | ||
116 | return *this; | |
117 | } | |
118 | ||
119 | //_______________________________________________________ | |
120 | Bool_t AliMUONChamber::IsSensId(Int_t volId) const | |
121 | { | |
122 | // Returns true if the volume specified by volId is in the list | |
123 | // of sesitive volumes for this chamber | |
124 | ||
125 | return fGeometry->IsSensitiveVolume(volId); | |
126 | } | |
127 | ||
128 | ||
129 | //_____________________________________________________ | |
130 | void AliMUONChamber::ChargeCorrelationInit() { | |
131 | // Initialisation of charge correlation for current hit | |
132 | // the value is stored, and then used by Disintegration | |
133 | if (fnsec==1) | |
134 | fCurrentCorrel =1; | |
135 | else | |
136 | // exponential is here to avoid eventual problems in 0 | |
137 | // factor 2 because chargecorrel is q1/q2 and not q1/qtrue | |
138 | fCurrentCorrel = TMath::Exp(gRandom->Gaus(0,fResponse->ChargeCorrel()/2)); | |
139 | } | |
140 | ||
141 | //_______________________________________________________ | |
142 | void AliMUONChamber::InitGeo(Float_t /*zpos*/) | |
143 | { | |
144 | // sensitive gas gap | |
145 | fdGas= 0.5; | |
146 | // 3% radiation length of aluminum (X0=8.9 cm) | |
147 | fdAlu= 3.0/100*8.9; | |
148 | } | |
149 | //_______________________________________________________ | |
150 | // | |
151 | // NEW SEGMENTATION | |
152 | //_______________________________________________________ | |
153 | void AliMUONChamber::Init(Int_t flag) | |
154 | { | |
155 | // Initalisation .. | |
156 | // | |
157 | // ... for chamber segmentation | |
158 | ||
159 | if (!flag) AliFatal("wrong segmentation type."); | |
160 | ||
161 | ||
162 | if (fSegmentation2->At(0)) | |
163 | ((AliMUONGeometrySegmentation*) fSegmentation2->At(0))->Init(fId); | |
164 | ||
165 | if (fnsec==2) { | |
166 | if (fSegmentation2->At(1)) | |
167 | ((AliMUONGeometrySegmentation*) fSegmentation2->At(1))->Init(fId); | |
168 | } | |
169 | } | |
170 | // //_________________________________________________________________ | |
171 | // void AliMUONChamber::SigGenInit(AliMUONHit *hit) | |
172 | // { | |
173 | // // | |
174 | // // Initialisation of segmentation for hit | |
175 | // // | |
176 | // Float_t x = hit->X(); | |
177 | // Float_t y = hit->Y(); | |
178 | // Float_t z = hit->Z(); | |
179 | // Int_t id = hit->DetElemId(); | |
180 | ||
181 | // if (fnsec==1) { | |
182 | // ((AliMUONGeometrySegmentation*) fSegmentation2->At(0))->SigGenInit(id, x, y, z) ; | |
183 | // } else { | |
184 | // ((AliMUONGeometrySegmentation*) fSegmentation2->At(0))->SigGenInit(id, x, y, z) ; | |
185 | // ((AliMUONGeometrySegmentation*) fSegmentation2->At(1))->SigGenInit(id, x, y, z) ; | |
186 | // } | |
187 | // } | |
188 | ||
189 | //_______________________________________________________ | |
190 | void AliMUONChamber::DisIntegration(AliMUONHit *hit, | |
191 | Int_t& nnew,Float_t newclust[6][500]) | |
192 | { | |
193 | // | |
194 | // Generates pad hits (simulated cluster) | |
195 | // using the segmentation and the response model | |
196 | Float_t dx, dy; | |
197 | ||
198 | Float_t xhit = hit->X(); | |
199 | Float_t yhit = hit->Y(); | |
200 | Float_t zhit = hit->Z(); | |
201 | Int_t id = hit->DetElemId(); | |
202 | Float_t eloss = hit->Eloss(); | |
203 | ||
204 | // | |
205 | // Width of the integration area | |
206 | // | |
207 | dx=fResponse->SigmaIntegration()*fResponse->ChargeSpreadX(); | |
208 | dy=fResponse->SigmaIntegration()*fResponse->ChargeSpreadY(); | |
209 | // | |
210 | // Get pulse height from energy loss | |
211 | Float_t qtot = fResponse->IntPH(eloss); | |
212 | // | |
213 | // Loop Over Pads | |
214 | ||
215 | Float_t qp; | |
216 | nnew=0; | |
217 | ||
218 | // Cathode plane loop | |
219 | for (Int_t i=1; i<=fnsec; i++) { | |
220 | Float_t qcath = qtot * (i==1? fCurrentCorrel : 1/fCurrentCorrel); | |
221 | ||
222 | AliMUONGeometrySegmentation* segmentation= | |
223 | (AliMUONGeometrySegmentation*) fSegmentation2->At(i-1); | |
224 | ||
225 | for (segmentation->FirstPad(id, xhit, yhit, zhit, dx, dy); | |
226 | segmentation->MorePads(id); | |
227 | segmentation->NextPad(id)) | |
228 | { | |
229 | qp=fResponse->IntXY(id, segmentation); | |
230 | qp=TMath::Abs(qp); | |
231 | // | |
232 | // | |
233 | if (qp > 1.e-4) | |
234 | { | |
235 | if (nnew >= 500) // Perform a bounds check on nnew since it is assumed | |
236 | // newclust only contains 500 elements. | |
237 | { | |
238 | AliError("Limit of 500 pad responses reached."); | |
239 | return; | |
240 | }; | |
241 | // | |
242 | // --- store signal information | |
243 | newclust[0][nnew]=qcath; // total charge | |
244 | newclust[1][nnew]=segmentation->Ix(); // ix-position of pad | |
245 | newclust[2][nnew]=segmentation->Iy(); // iy-position of pad | |
246 | newclust[3][nnew]=qp * qcath; // charge on pad | |
247 | newclust[4][nnew]=segmentation->ISector(); // sector id | |
248 | newclust[5][nnew]=(Float_t) i; // counter | |
249 | nnew++; | |
250 | ||
251 | } | |
252 | } // Pad loop | |
253 | } // Cathode plane loop | |
254 | } |