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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 | $Log$ | |
2682e810 | 17 | Revision 1.11 2001/07/20 10:03:14 morsch |
18 | Changes needed to work with Root 3.01 (substitute lhs [] operator). (Jiri Chudoba) | |
19 | ||
cd4df77b | 20 | Revision 1.10 2001/03/20 13:17:30 egangler |
21 | fChargeCorrel moved from AliMUONChamber to AliMUONResponse as decided by | |
22 | January meeting. | |
23 | Setters and Getters are modified accordingly. | |
24 | This modification is transparent to the user code | |
25 | ||
16d57990 | 26 | Revision 1.9 2001/01/26 21:35:54 morsch |
27 | All pointers set to 0 in default constructor. | |
28 | ||
0e9bce78 | 29 | Revision 1.8 2001/01/17 20:53:40 hristov |
30 | Destructors corrected to avoid memory leaks | |
31 | ||
c2c0190f | 32 | Revision 1.7 2000/12/20 13:00:22 egangler |
33 | ||
34 | Added charge correlation between cathods. | |
35 | In Config_slat.C, use | |
36 | MUON->Chamber(chamber-1).SetChargeCorrel(0.11); to set the RMS of | |
37 | q1/q2 to 11 % (number from Alberto) | |
38 | This is stored in AliMUONChamber fChargeCorrel member. | |
39 | At generation time, when a tracks enters the volume, | |
40 | AliMUONv1::StepManager calls | |
41 | AliMUONChamber::ChargeCorrelationInit() to set the current value of | |
42 | fCurrentCorrel which is then used at Disintegration level to scale | |
43 | appropriately the PadHit charges. | |
44 | ||
681d067b | 45 | Revision 1.6 2000/10/09 14:01:12 morsch |
46 | Double inclusion of AliResponse removed. | |
47 | ||
ef495f13 | 48 | Revision 1.5 2000/07/03 11:54:57 morsch |
49 | AliMUONSegmentation and AliMUONHitMap have been replaced by AliSegmentation and AliHitMap in STEER | |
50 | The methods GetPadIxy and GetPadXxy of AliMUONSegmentation have changed name to GetPadI and GetPadC. | |
51 | ||
a30a000f | 52 | Revision 1.4 2000/06/29 12:34:09 morsch |
53 | AliMUONSegmentation class has been made independent of AliMUONChamber. This makes | |
54 | it usable with any other geometry class. The link to the object to which it belongs is | |
55 | established via an index. This assumes that there exists a global geometry manager | |
56 | from which the pointer to the parent object can be obtained (in our case gAlice). | |
57 | ||
d81db581 | 58 | Revision 1.3 2000/06/28 15:16:35 morsch |
59 | (1) Client code adapted to new method signatures in AliMUONSegmentation (see comments there) | |
60 | to allow development of slat-muon chamber simulation and reconstruction code in the MUON | |
61 | framework. The changes should have no side effects (mostly dummy arguments). | |
62 | (2) Hit disintegration uses 3-dim hit coordinates to allow simulation | |
63 | of chambers with overlapping modules (MakePadHits, Disintegration). | |
64 | ||
802a864d | 65 | Revision 1.2 2000/06/15 07:58:48 morsch |
66 | Code from MUON-dev joined | |
67 | ||
a9e2aefa | 68 | Revision 1.1.2.5 2000/06/09 21:27:01 morsch |
69 | Most coding rule violations corrected. | |
70 | ||
71 | Revision 1.1.2.4 2000/05/05 11:34:12 morsch | |
72 | Log inside comments. | |
73 | ||
74 | Revision 1.1.2.3 2000/05/05 10:09:52 morsch | |
75 | Log messages included | |
76 | */ | |
77 | ||
681d067b | 78 | // --- MUON includes --- |
a9e2aefa | 79 | #include "AliMUONChamber.h" |
a9e2aefa | 80 | |
681d067b | 81 | // --- ROOT includes --- |
82 | ||
83 | #include "TRandom.h" | |
a9e2aefa | 84 | #include "TMath.h" |
681d067b | 85 | |
a9e2aefa | 86 | ClassImp(AliMUONChamber) |
87 | ||
d81db581 | 88 | AliMUONChamber::AliMUONChamber() |
89 | { | |
90 | // Default constructor | |
0e9bce78 | 91 | fSegmentation = 0; |
d81db581 | 92 | fResponse=0; |
93 | fnsec=1; | |
94 | fReconstruction=0; | |
95 | fId=0; | |
681d067b | 96 | // to avoid mistakes if ChargeCorrelInit is not called |
681d067b | 97 | fCurrentCorrel =1; |
d81db581 | 98 | } |
99 | ||
100 | AliMUONChamber::AliMUONChamber(Int_t id) | |
a9e2aefa | 101 | { |
d81db581 | 102 | // Construtor with chamber id |
a9e2aefa | 103 | fSegmentation = new TObjArray(2); |
cd4df77b | 104 | fSegmentation->AddAt(0,0); |
105 | fSegmentation->AddAt(0,1); | |
a9e2aefa | 106 | fResponse=0; |
107 | fnsec=1; | |
108 | fReconstruction=0; | |
d81db581 | 109 | fId=id; |
681d067b | 110 | // to avoid mistakes if ChargeCorrelInit is not called |
681d067b | 111 | fCurrentCorrel =1; |
a9e2aefa | 112 | } |
113 | ||
114 | AliMUONChamber::~AliMUONChamber() | |
115 | { | |
d81db581 | 116 | // Destructor |
c2c0190f | 117 | if (fSegmentation) { |
118 | fSegmentation->Delete(); | |
119 | delete fSegmentation; | |
120 | } | |
a9e2aefa | 121 | } |
122 | ||
123 | AliMUONChamber::AliMUONChamber(const AliMUONChamber& rChamber) | |
124 | { | |
125 | // Dummy copy constructor | |
126 | ; | |
127 | } | |
128 | ||
129 | ||
130 | void AliMUONChamber::Init() | |
131 | { | |
132 | // Initalisation .. | |
133 | // | |
134 | // ... for chamber segmentation | |
2682e810 | 135 | //PH if ((*fSegmentation)[0]) |
136 | //PH ((AliSegmentation *) (*fSegmentation)[0])->Init(fId); | |
137 | if (fSegmentation->At(0)) | |
138 | ((AliSegmentation *) fSegmentation->At(0))->Init(fId); | |
a9e2aefa | 139 | |
140 | if (fnsec==2) { | |
2682e810 | 141 | //PH if ((*fSegmentation)[1]) |
142 | //PH ((AliSegmentation *) (*fSegmentation)[1])->Init(fId); | |
143 | if (fSegmentation->At(1)) | |
144 | ((AliSegmentation *) fSegmentation->At(1))->Init(fId); | |
a9e2aefa | 145 | } |
146 | } | |
147 | ||
148 | Int_t AliMUONChamber::SigGenCond(Float_t x, Float_t y, Float_t z) | |
149 | { | |
150 | // Ask segmentation if signal should be generated | |
151 | if (fnsec==1) { | |
2682e810 | 152 | //PH return ((AliSegmentation*) (*fSegmentation)[0]) |
153 | return ((AliSegmentation*) fSegmentation->At(0)) | |
a9e2aefa | 154 | ->SigGenCond(x, y, z) ; |
155 | } else { | |
2682e810 | 156 | //PH return (((AliSegmentation*) (*fSegmentation)[0]) |
157 | return (((AliSegmentation*) fSegmentation->At(0)) | |
a9e2aefa | 158 | ->SigGenCond(x, y, z)) || |
2682e810 | 159 | //PH (((AliSegmentation*) (*fSegmentation)[1]) |
160 | (((AliSegmentation*) fSegmentation->At(1)) | |
a9e2aefa | 161 | ->SigGenCond(x, y, z)) ; |
162 | } | |
163 | } | |
164 | ||
165 | ||
166 | void AliMUONChamber::SigGenInit(Float_t x, Float_t y, Float_t z) | |
167 | { | |
168 | // | |
169 | // Initialisation of segmentation for hit | |
170 | // | |
171 | if (fnsec==1) { | |
2682e810 | 172 | //PH ((AliSegmentation*) (*fSegmentation)[0])->SigGenInit(x, y, z) ; |
173 | ((AliSegmentation*) fSegmentation->At(0))->SigGenInit(x, y, z) ; | |
a9e2aefa | 174 | } else { |
2682e810 | 175 | //PH ((AliSegmentation*) (*fSegmentation)[0])->SigGenInit(x, y, z) ; |
176 | //PH ((AliSegmentation*) (*fSegmentation)[1])->SigGenInit(x, y, z) ; | |
177 | ((AliSegmentation*) fSegmentation->At(0))->SigGenInit(x, y, z) ; | |
178 | ((AliSegmentation*) fSegmentation->At(1))->SigGenInit(x, y, z) ; | |
a9e2aefa | 179 | } |
180 | } | |
181 | ||
681d067b | 182 | void AliMUONChamber::ChargeCorrelationInit() { |
183 | // Initialisation of charge correlation for current hit | |
184 | // the value is stored, and then used by Disintegration | |
185 | if (fnsec==1) | |
186 | fCurrentCorrel =1; | |
187 | else | |
188 | // exponential is here to avoid eventual problems in 0 | |
16d57990 | 189 | // factor 2 because chargecorrel is q1/q2 and not q1/qtrue |
190 | fCurrentCorrel = TMath::Exp(gRandom->Gaus(0,fResponse->ChargeCorrel()/2)); | |
681d067b | 191 | } |
192 | ||
a9e2aefa | 193 | void AliMUONChamber::DisIntegration(Float_t eloss, Float_t tof, |
802a864d | 194 | Float_t xhit, Float_t yhit, Float_t zhit, |
a9e2aefa | 195 | Int_t& nnew,Float_t newclust[6][500]) |
196 | { | |
197 | // | |
198 | // Generates pad hits (simulated cluster) | |
199 | // using the segmentation and the response model | |
200 | Float_t dx, dy; | |
201 | // | |
202 | // Width of the integration area | |
203 | // | |
204 | dx=fResponse->SigmaIntegration()*fResponse->ChargeSpreadX(); | |
205 | dy=fResponse->SigmaIntegration()*fResponse->ChargeSpreadY(); | |
206 | // | |
207 | // Get pulse height from energy loss | |
208 | Float_t qtot = fResponse->IntPH(eloss); | |
209 | // | |
210 | // Loop Over Pads | |
211 | ||
212 | Float_t qcheck=0, qp; | |
213 | nnew=0; | |
ef495f13 | 214 | |
681d067b | 215 | // Cathode plane loop |
a9e2aefa | 216 | for (Int_t i=1; i<=fnsec; i++) { |
217 | qcheck=0; | |
681d067b | 218 | Float_t qcath = qtot * (i==1? fCurrentCorrel : 1/fCurrentCorrel); |
a30a000f | 219 | AliSegmentation * segmentation= |
2682e810 | 220 | //PH (AliSegmentation *) (*fSegmentation)[i-1]; |
221 | (AliSegmentation *) fSegmentation->At(i-1); | |
802a864d | 222 | for (segmentation->FirstPad(xhit, yhit, zhit, dx, dy); |
a9e2aefa | 223 | segmentation->MorePads(); |
224 | segmentation->NextPad()) | |
225 | { | |
226 | qp=fResponse->IntXY(segmentation); | |
227 | qp=TMath::Abs(qp); | |
a9e2aefa | 228 | // |
229 | // | |
230 | if (qp > 1.e-4) { | |
681d067b | 231 | qcheck+=qp*qcath; |
a9e2aefa | 232 | // |
233 | // --- store signal information | |
681d067b | 234 | newclust[0][nnew]=qcath; // total charge |
a9e2aefa | 235 | newclust[1][nnew]=segmentation->Ix(); // ix-position of pad |
236 | newclust[2][nnew]=segmentation->Iy(); // iy-position of pad | |
681d067b | 237 | newclust[3][nnew]=qp * qcath; // charge on pad |
a9e2aefa | 238 | newclust[4][nnew]=segmentation->ISector(); // sector id |
239 | newclust[5][nnew]=(Float_t) i; // counter | |
240 | nnew++; | |
681d067b | 241 | // if (i==2) printf("\n i, nnew, q %d %d %f", i, nnew, qp*qcath); |
ef495f13 | 242 | |
a9e2aefa | 243 | } |
244 | } // Pad loop | |
ef495f13 | 245 | |
a9e2aefa | 246 | } // Cathode plane loop |
247 | } | |
248 | ||
249 | ||
250 | ||
251 | void AliMUONChamber::InitGeo(Float_t zpos) | |
252 | { | |
253 | // sensitive gas gap | |
254 | fdGas= 0.5; | |
255 | // 3% radiation length of aluminum (X0=8.9 cm) | |
256 | fdAlu= 3.0/100*8.9; | |
257 | } | |
258 | ||
259 | ||
260 | AliMUONChamber & AliMUONChamber::operator =(const AliMUONChamber& rhs) | |
261 | { | |
262 | // Dummy assignment operator | |
263 | return *this; | |
264 | } |