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4c039060 | 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 | /* | |
17 | $Log$ | |
0b27b8c7 | 18 | Revision 1.18 2000/10/02 21:28:14 fca |
19 | Removal of useless dependecies via forward declarations | |
20 | ||
94de3818 | 21 | Revision 1.17 2000/07/12 08:56:25 fca |
22 | Coding convention correction and warning removal | |
23 | ||
8918e700 | 24 | Revision 1.16 2000/05/26 08:35:03 fca |
25 | Move the check on z after z has been retrieved | |
26 | ||
119a6af6 | 27 | Revision 1.15 2000/05/16 13:10:40 fca |
28 | New method IsNewTrack and fix for a problem in Father-Daughter relations | |
29 | ||
a01a8b12 | 30 | Revision 1.14 2000/04/27 10:38:21 fca |
31 | Correct termination of Lego Run and introduce Lego getter in AliRun | |
32 | ||
838edcaf | 33 | Revision 1.13 2000/04/26 10:17:31 fca |
34 | Changes in Lego for G4 compatibility | |
35 | ||
dffd31ef | 36 | Revision 1.12 2000/04/07 11:12:33 fca |
37 | G4 compatibility changes | |
38 | ||
875c717b | 39 | Revision 1.11 2000/03/22 13:42:26 fca |
40 | SetGenerator does not replace an existing generator, ResetGenerator does | |
41 | ||
ee1dd322 | 42 | Revision 1.10 2000/02/23 16:25:22 fca |
43 | AliVMC and AliGeant3 classes introduced | |
44 | ReadEuclid moved from AliRun to AliModule | |
45 | ||
b13db077 | 46 | Revision 1.9 1999/12/03 10:54:01 fca |
47 | Fix lego summary | |
48 | ||
00719c1b | 49 | Revision 1.8 1999/10/01 09:54:33 fca |
50 | Correct logics for Lego StepManager | |
51 | ||
f059c84a | 52 | Revision 1.7 1999/09/29 09:24:29 fca |
53 | Introduction of the Copyright and cvs Log | |
54 | ||
4c039060 | 55 | */ |
56 | ||
fe4da5cc | 57 | ////////////////////////////////////////////////////////////// |
58 | ////////////////////////////////////////////////////////////// | |
59 | // | |
60 | // Utility class to evaluate the material budget from | |
61 | // a given radius to the surface of an arbitrary cylinder | |
62 | // along radial directions from the centre: | |
63 | // | |
64 | // - radiation length | |
65 | // - Interaction length | |
66 | // - g/cm2 | |
67 | // | |
68 | // Geantinos are shot in the bins in the fNtheta bins in theta | |
69 | // and fNphi bins in phi with specified rectangular limits. | |
70 | // The statistics are accumulated per | |
71 | // fRadMin < r < fRadMax and <0 < z < fZMax | |
72 | // | |
73 | // To activate this option, you can do: | |
74 | // Root > gAlice.RunLego(); | |
75 | // or Root > .x menu.C then select menu item "RunLego" | |
76 | // Note that when calling gAlice->RunLego, an optional list | |
77 | // of arguments may be specified. | |
78 | // | |
79 | //Begin_Html | |
80 | /* | |
1439f98e | 81 | <img src="picts/alilego.gif"> |
fe4da5cc | 82 | */ |
83 | //End_Html | |
84 | // | |
85 | ////////////////////////////////////////////////////////////// | |
86 | ||
87 | #include "TMath.h" | |
94de3818 | 88 | |
1578254f | 89 | #include "AliLego.h" |
8918e700 | 90 | #include "AliLegoGenerator.h" |
fe4da5cc | 91 | #include "AliRun.h" |
92 | #include "AliConst.h" | |
875c717b | 93 | #include "AliMC.h" |
94de3818 | 94 | #include "TH2.h" |
fe4da5cc | 95 | |
96 | ClassImp(AliLego) | |
97 | ||
98 | ||
99 | //___________________________________________ | |
100 | AliLego::AliLego() | |
101 | { | |
8918e700 | 102 | // |
103 | // Default constructor | |
104 | // | |
105 | fHistRadl = 0; | |
106 | fHistAbso = 0; | |
107 | fHistGcm2 = 0; | |
108 | fHistReta = 0; | |
fe4da5cc | 109 | } |
110 | ||
111 | //___________________________________________ | |
0b27b8c7 | 112 | AliLego::AliLego(const char *title, Int_t ntheta, Float_t thetamin, |
113 | Float_t thetamax, Int_t nphi, Float_t phimin, Float_t phimax, | |
b13db077 | 114 | Float_t rmin, Float_t rmax, Float_t zmax) |
115 | : TNamed("Lego Generator",title) | |
fe4da5cc | 116 | { |
8918e700 | 117 | // |
118 | // specify the angular limits and the size of the rectangular box | |
119 | // | |
0b27b8c7 | 120 | fGener = new AliLegoGenerator(ntheta, thetamin, thetamax, |
b13db077 | 121 | nphi, phimin, phimax, rmin, rmax, zmax); |
122 | ||
b13db077 | 123 | |
0b27b8c7 | 124 | |
b13db077 | 125 | fHistRadl = new TH2F("hradl","Radiation length map", |
0b27b8c7 | 126 | ntheta,thetamin,thetamax,nphi,phimin,phimax); |
b13db077 | 127 | fHistAbso = new TH2F("habso","Interaction length map", |
0b27b8c7 | 128 | ntheta,thetamin,thetamax,nphi,phimin,phimax); |
b13db077 | 129 | fHistGcm2 = new TH2F("hgcm2","g/cm2 length map", |
0b27b8c7 | 130 | ntheta,thetamin,thetamax,nphi,phimin,phimax); |
131 | } | |
132 | ||
133 | AliLego::AliLego(const char *title, AliLegoGenerator* generator) | |
134 | : TNamed("Lego Generator",title) | |
135 | { | |
136 | // | |
137 | // specify the angular limits and the size of the rectangular box | |
138 | // | |
139 | fGener = generator; | |
140 | Float_t c1min, c1max, c2min, c2max; | |
141 | Int_t n1 = fGener->NCoor1(); | |
142 | Int_t n2 = fGener->NCoor2(); | |
143 | ||
144 | fGener->Coor1Range(c1min, c1max); | |
145 | fGener->Coor2Range(c2min, c2max); | |
b13db077 | 146 | |
0b27b8c7 | 147 | fHistRadl = new TH2F("hradl","Radiation length map", |
148 | n1, c1min, c1max, n2, c2min, c2max); | |
149 | fHistAbso = new TH2F("habso","Interaction length map", | |
150 | n1, c1min, c1max, n2, c2min, c2max); | |
151 | fHistGcm2 = new TH2F("hgcm2","g/cm2 length map", | |
152 | n1, c1min, c1max, n2, c2min, c2max); | |
fe4da5cc | 153 | } |
154 | ||
155 | //___________________________________________ | |
156 | AliLego::~AliLego() | |
157 | { | |
8918e700 | 158 | // |
159 | // Destructor | |
160 | // | |
161 | delete fHistRadl; | |
162 | delete fHistAbso; | |
163 | delete fHistGcm2; | |
8918e700 | 164 | delete fGener; |
fe4da5cc | 165 | } |
166 | ||
b13db077 | 167 | //___________________________________________ |
dffd31ef | 168 | void AliLego::BeginEvent() |
b13db077 | 169 | { |
8918e700 | 170 | // |
171 | // --- Set to 0 radiation length, absorption length and g/cm2 --- | |
172 | // | |
dffd31ef | 173 | fTotRadl = 0; |
174 | fTotAbso = 0; | |
175 | fTotGcm2 = 0; | |
176 | } | |
177 | ||
178 | //___________________________________________ | |
179 | void AliLego::FinishEvent() | |
180 | { | |
8918e700 | 181 | // |
182 | // Finish the event and update the histos | |
183 | // | |
0b27b8c7 | 184 | Double_t c1, c2; |
185 | c1 = fGener->CurCoor1(); | |
186 | c2 = fGener->CurCoor2(); | |
187 | fHistRadl->Fill(c1,c2,fTotRadl); | |
188 | fHistAbso->Fill(c1,c2,fTotAbso); | |
189 | fHistGcm2->Fill(c1,c2,fTotGcm2); | |
b13db077 | 190 | } |
191 | ||
dffd31ef | 192 | //___________________________________________ |
193 | void AliLego::FinishRun() | |
194 | { | |
8918e700 | 195 | // |
196 | // Store histograms in current Root file | |
197 | // | |
dffd31ef | 198 | fHistRadl->Write(); |
199 | fHistAbso->Write(); | |
200 | fHistGcm2->Write(); | |
dffd31ef | 201 | |
202 | // Delete histograms from memory | |
203 | fHistRadl->Delete(); fHistRadl=0; | |
204 | fHistAbso->Delete(); fHistAbso=0; | |
205 | fHistGcm2->Delete(); fHistGcm2=0; | |
dffd31ef | 206 | } |
207 | ||
8918e700 | 208 | //___________________________________________ |
209 | void AliLego::Copy(AliLego &lego) const | |
210 | { | |
211 | // | |
212 | // Copy *this onto lego -- not implemented | |
213 | // | |
214 | Fatal("Copy","Not implemented!\n"); | |
215 | } | |
dffd31ef | 216 | |
b13db077 | 217 | //___________________________________________ |
218 | void AliLego::StepManager() | |
219 | { | |
220 | // called from AliRun::Stepmanager from gustep. | |
221 | // Accumulate the 3 parameters step by step | |
222 | ||
223 | static Float_t t; | |
224 | Float_t a,z,dens,radl,absl; | |
225 | Int_t i; | |
226 | ||
227 | Float_t step = gMC->TrackStep(); | |
228 | ||
229 | Float_t vect[3], dir[3]; | |
230 | TLorentzVector pos, mom; | |
231 | ||
119a6af6 | 232 | gMC->CurrentMaterial(a,z,dens,radl,absl); |
233 | ||
a01a8b12 | 234 | if (z < 1) return; |
235 | ||
b13db077 | 236 | gMC->TrackPosition(pos); |
237 | gMC->TrackMomentum(mom); | |
b13db077 | 238 | // --- See if we have to stop now |
239 | if (TMath::Abs(pos[2]) > fGener->ZMax() || | |
240 | pos[0]*pos[0] +pos[1]*pos[1] > fGener->RadMax()*fGener->RadMax()) { | |
a01a8b12 | 241 | if (!gMC->IsNewTrack()) { |
b13db077 | 242 | // Not the first step, add past contribution |
243 | fTotAbso += t/absl; | |
244 | fTotRadl += t/radl; | |
245 | fTotGcm2 += t*dens; | |
0b27b8c7 | 246 | // Int_t copy; |
247 | // Int_t id = gMC->CurrentVolID(copy); | |
248 | // char* vol = gMC->VolName(id); | |
249 | ||
250 | // printf("\n %f %f %f %f %s ", fTotRadl, vect[0], vect[1], vect[2], vol); | |
251 | ||
b13db077 | 252 | } |
253 | gMC->StopTrack(); | |
254 | return; | |
255 | } | |
256 | ||
257 | // --- See how long we have to go | |
258 | for(i=0;i<3;++i) { | |
259 | vect[i]=pos[i]; | |
260 | dir[i]=mom[i]; | |
261 | } | |
262 | ||
263 | t = fGener->PropagateCylinder(vect,dir,fGener->RadMax(),fGener->ZMax()); | |
264 | ||
265 | if(step) { | |
266 | fTotAbso += step/absl; | |
267 | fTotRadl += step/radl; | |
268 | fTotGcm2 += step*dens; | |
0b27b8c7 | 269 | // Int_t copy; |
270 | // Int_t id = gMC->CurrentVolID(copy); | |
271 | // char* vol = gMC->VolName(id); | |
272 | // printf("\n %f %f %f %f %s %f ", fTotRadl, vect[0], vect[1], vect[2], vol, t); | |
b13db077 | 273 | } |
274 | } | |
275 | ||
0b27b8c7 | 276 | |
277 | ||
278 | ||
279 |