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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 | **************************************************************************/ | |
15 | /* | |
16 | $Log$ | |
16d57990 | 17 | Revision 1.9 2001/01/26 21:35:54 morsch |
18 | All pointers set to 0 in default constructor. | |
19 | ||
0e9bce78 | 20 | Revision 1.8 2001/01/17 20:53:40 hristov |
21 | Destructors corrected to avoid memory leaks | |
22 | ||
c2c0190f | 23 | Revision 1.7 2000/12/20 13:00:22 egangler |
24 | ||
25 | Added charge correlation between cathods. | |
26 | In Config_slat.C, use | |
27 | MUON->Chamber(chamber-1).SetChargeCorrel(0.11); to set the RMS of | |
28 | q1/q2 to 11 % (number from Alberto) | |
29 | This is stored in AliMUONChamber fChargeCorrel member. | |
30 | At generation time, when a tracks enters the volume, | |
31 | AliMUONv1::StepManager calls | |
32 | AliMUONChamber::ChargeCorrelationInit() to set the current value of | |
33 | fCurrentCorrel which is then used at Disintegration level to scale | |
34 | appropriately the PadHit charges. | |
35 | ||
681d067b | 36 | Revision 1.6 2000/10/09 14:01:12 morsch |
37 | Double inclusion of AliResponse removed. | |
38 | ||
ef495f13 | 39 | Revision 1.5 2000/07/03 11:54:57 morsch |
40 | AliMUONSegmentation and AliMUONHitMap have been replaced by AliSegmentation and AliHitMap in STEER | |
41 | The methods GetPadIxy and GetPadXxy of AliMUONSegmentation have changed name to GetPadI and GetPadC. | |
42 | ||
a30a000f | 43 | Revision 1.4 2000/06/29 12:34:09 morsch |
44 | AliMUONSegmentation class has been made independent of AliMUONChamber. This makes | |
45 | it usable with any other geometry class. The link to the object to which it belongs is | |
46 | established via an index. This assumes that there exists a global geometry manager | |
47 | from which the pointer to the parent object can be obtained (in our case gAlice). | |
48 | ||
d81db581 | 49 | Revision 1.3 2000/06/28 15:16:35 morsch |
50 | (1) Client code adapted to new method signatures in AliMUONSegmentation (see comments there) | |
51 | to allow development of slat-muon chamber simulation and reconstruction code in the MUON | |
52 | framework. The changes should have no side effects (mostly dummy arguments). | |
53 | (2) Hit disintegration uses 3-dim hit coordinates to allow simulation | |
54 | of chambers with overlapping modules (MakePadHits, Disintegration). | |
55 | ||
802a864d | 56 | Revision 1.2 2000/06/15 07:58:48 morsch |
57 | Code from MUON-dev joined | |
58 | ||
a9e2aefa | 59 | Revision 1.1.2.5 2000/06/09 21:27:01 morsch |
60 | Most coding rule violations corrected. | |
61 | ||
62 | Revision 1.1.2.4 2000/05/05 11:34:12 morsch | |
63 | Log inside comments. | |
64 | ||
65 | Revision 1.1.2.3 2000/05/05 10:09:52 morsch | |
66 | Log messages included | |
67 | */ | |
68 | ||
681d067b | 69 | // --- MUON includes --- |
a9e2aefa | 70 | #include "AliMUONChamber.h" |
a9e2aefa | 71 | |
681d067b | 72 | // --- ROOT includes --- |
73 | ||
74 | #include "TRandom.h" | |
a9e2aefa | 75 | #include "TMath.h" |
681d067b | 76 | |
a9e2aefa | 77 | ClassImp(AliMUONChamber) |
78 | ||
d81db581 | 79 | AliMUONChamber::AliMUONChamber() |
80 | { | |
81 | // Default constructor | |
0e9bce78 | 82 | fSegmentation = 0; |
d81db581 | 83 | fResponse=0; |
84 | fnsec=1; | |
85 | fReconstruction=0; | |
86 | fId=0; | |
681d067b | 87 | // to avoid mistakes if ChargeCorrelInit is not called |
681d067b | 88 | fCurrentCorrel =1; |
d81db581 | 89 | } |
90 | ||
91 | AliMUONChamber::AliMUONChamber(Int_t id) | |
a9e2aefa | 92 | { |
d81db581 | 93 | // Construtor with chamber id |
a9e2aefa | 94 | fSegmentation = new TObjArray(2); |
95 | (*fSegmentation)[0] = 0; | |
96 | (*fSegmentation)[1] = 0; | |
97 | fResponse=0; | |
98 | fnsec=1; | |
99 | fReconstruction=0; | |
d81db581 | 100 | fId=id; |
681d067b | 101 | // to avoid mistakes if ChargeCorrelInit is not called |
681d067b | 102 | fCurrentCorrel =1; |
a9e2aefa | 103 | } |
104 | ||
105 | AliMUONChamber::~AliMUONChamber() | |
106 | { | |
d81db581 | 107 | // Destructor |
c2c0190f | 108 | if (fSegmentation) { |
109 | fSegmentation->Delete(); | |
110 | delete fSegmentation; | |
111 | } | |
a9e2aefa | 112 | } |
113 | ||
114 | AliMUONChamber::AliMUONChamber(const AliMUONChamber& rChamber) | |
115 | { | |
116 | // Dummy copy constructor | |
117 | ; | |
118 | } | |
119 | ||
120 | ||
121 | void AliMUONChamber::Init() | |
122 | { | |
123 | // Initalisation .. | |
124 | // | |
125 | // ... for chamber segmentation | |
126 | if ((*fSegmentation)[0]) | |
a30a000f | 127 | ((AliSegmentation *) (*fSegmentation)[0])->Init(fId); |
a9e2aefa | 128 | |
129 | if (fnsec==2) { | |
130 | if ((*fSegmentation)[1]) | |
a30a000f | 131 | ((AliSegmentation *) (*fSegmentation)[1])->Init(fId); |
a9e2aefa | 132 | } |
133 | } | |
134 | ||
135 | Int_t AliMUONChamber::SigGenCond(Float_t x, Float_t y, Float_t z) | |
136 | { | |
137 | // Ask segmentation if signal should be generated | |
138 | if (fnsec==1) { | |
a30a000f | 139 | return ((AliSegmentation*) (*fSegmentation)[0]) |
a9e2aefa | 140 | ->SigGenCond(x, y, z) ; |
141 | } else { | |
a30a000f | 142 | return (((AliSegmentation*) (*fSegmentation)[0]) |
a9e2aefa | 143 | ->SigGenCond(x, y, z)) || |
a30a000f | 144 | (((AliSegmentation*) (*fSegmentation)[1]) |
a9e2aefa | 145 | ->SigGenCond(x, y, z)) ; |
146 | } | |
147 | } | |
148 | ||
149 | ||
150 | void AliMUONChamber::SigGenInit(Float_t x, Float_t y, Float_t z) | |
151 | { | |
152 | // | |
153 | // Initialisation of segmentation for hit | |
154 | // | |
155 | if (fnsec==1) { | |
a30a000f | 156 | ((AliSegmentation*) (*fSegmentation)[0])->SigGenInit(x, y, z) ; |
a9e2aefa | 157 | } else { |
a30a000f | 158 | ((AliSegmentation*) (*fSegmentation)[0])->SigGenInit(x, y, z) ; |
159 | ((AliSegmentation*) (*fSegmentation)[1])->SigGenInit(x, y, z) ; | |
a9e2aefa | 160 | } |
161 | } | |
162 | ||
681d067b | 163 | void AliMUONChamber::ChargeCorrelationInit() { |
164 | // Initialisation of charge correlation for current hit | |
165 | // the value is stored, and then used by Disintegration | |
166 | if (fnsec==1) | |
167 | fCurrentCorrel =1; | |
168 | else | |
169 | // exponential is here to avoid eventual problems in 0 | |
16d57990 | 170 | // factor 2 because chargecorrel is q1/q2 and not q1/qtrue |
171 | fCurrentCorrel = TMath::Exp(gRandom->Gaus(0,fResponse->ChargeCorrel()/2)); | |
681d067b | 172 | } |
173 | ||
a9e2aefa | 174 | void AliMUONChamber::DisIntegration(Float_t eloss, Float_t tof, |
802a864d | 175 | Float_t xhit, Float_t yhit, Float_t zhit, |
a9e2aefa | 176 | Int_t& nnew,Float_t newclust[6][500]) |
177 | { | |
178 | // | |
179 | // Generates pad hits (simulated cluster) | |
180 | // using the segmentation and the response model | |
181 | Float_t dx, dy; | |
182 | // | |
183 | // Width of the integration area | |
184 | // | |
185 | dx=fResponse->SigmaIntegration()*fResponse->ChargeSpreadX(); | |
186 | dy=fResponse->SigmaIntegration()*fResponse->ChargeSpreadY(); | |
187 | // | |
188 | // Get pulse height from energy loss | |
189 | Float_t qtot = fResponse->IntPH(eloss); | |
190 | // | |
191 | // Loop Over Pads | |
192 | ||
193 | Float_t qcheck=0, qp; | |
194 | nnew=0; | |
ef495f13 | 195 | |
681d067b | 196 | // Cathode plane loop |
a9e2aefa | 197 | for (Int_t i=1; i<=fnsec; i++) { |
198 | qcheck=0; | |
681d067b | 199 | Float_t qcath = qtot * (i==1? fCurrentCorrel : 1/fCurrentCorrel); |
a30a000f | 200 | AliSegmentation * segmentation= |
201 | (AliSegmentation *) (*fSegmentation)[i-1]; | |
802a864d | 202 | for (segmentation->FirstPad(xhit, yhit, zhit, dx, dy); |
a9e2aefa | 203 | segmentation->MorePads(); |
204 | segmentation->NextPad()) | |
205 | { | |
206 | qp=fResponse->IntXY(segmentation); | |
207 | qp=TMath::Abs(qp); | |
a9e2aefa | 208 | // |
209 | // | |
210 | if (qp > 1.e-4) { | |
681d067b | 211 | qcheck+=qp*qcath; |
a9e2aefa | 212 | // |
213 | // --- store signal information | |
681d067b | 214 | newclust[0][nnew]=qcath; // total charge |
a9e2aefa | 215 | newclust[1][nnew]=segmentation->Ix(); // ix-position of pad |
216 | newclust[2][nnew]=segmentation->Iy(); // iy-position of pad | |
681d067b | 217 | newclust[3][nnew]=qp * qcath; // charge on pad |
a9e2aefa | 218 | newclust[4][nnew]=segmentation->ISector(); // sector id |
219 | newclust[5][nnew]=(Float_t) i; // counter | |
220 | nnew++; | |
681d067b | 221 | // if (i==2) printf("\n i, nnew, q %d %d %f", i, nnew, qp*qcath); |
ef495f13 | 222 | |
a9e2aefa | 223 | } |
224 | } // Pad loop | |
ef495f13 | 225 | |
a9e2aefa | 226 | } // Cathode plane loop |
227 | } | |
228 | ||
229 | ||
230 | ||
231 | void AliMUONChamber::InitGeo(Float_t zpos) | |
232 | { | |
233 | // sensitive gas gap | |
234 | fdGas= 0.5; | |
235 | // 3% radiation length of aluminum (X0=8.9 cm) | |
236 | fdAlu= 3.0/100*8.9; | |
237 | } | |
238 | ||
239 | ||
240 | AliMUONChamber & AliMUONChamber::operator =(const AliMUONChamber& rhs) | |
241 | { | |
242 | // Dummy assignment operator | |
243 | return *this; | |
244 | } |