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46 | AliMUONSegmentation and AliMUONHitMap have been replaced by AliSegmentation and AliHitMap in STEER | |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