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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 | $Log$ | |
18 | Revision 1.19 2001/07/17 09:51:38 morsch | |
19 | Place station 3 inside Dipole. | |
20 | ||
21 | Revision 1.18 2001/04/06 11:24:43 morsch | |
22 | Dependency on implementations of AliSegmentation and AliMUONResponse moved to AliMUONFactory class. | |
23 | Static method Build() builds the MUON system out of chambers, segmentation and response. | |
24 | ||
25 | Revision 1.17 2001/03/17 10:07:20 morsch | |
26 | Correct inconsistent variable name / method name / comments. | |
27 | ||
28 | Revision 1.16 2001/01/27 08:50:50 morsch | |
29 | Call non default constructors of segmentation classes. | |
30 | ||
31 | Revision 1.15 2001/01/17 20:57:45 hristov | |
32 | Unused variable removed | |
33 | ||
34 | Revision 1.14 2000/12/21 22:42:55 morsch | |
35 | Constructor contains default set-up for segmentation. | |
36 | Record charged particles only. | |
37 | ||
38 | Revision 1.13 2000/10/06 10:03:38 morsch | |
39 | Call to gMC->VolId() moved to Init() | |
40 | ||
41 | Revision 1.12 2000/10/02 21:28:09 fca | |
42 | Removal of useless dependecies via forward declarations | |
43 | ||
44 | Revision 1.11 2000/06/27 07:31:07 morsch | |
45 | fChambers = 0; deleted from constructor. | |
46 | ||
47 | Revision 1.10 2000/06/26 14:02:38 morsch | |
48 | Add class AliMUONConstants with MUON specific constants using static memeber data and access methods. | |
49 | ||
50 | Revision 1.9 2000/06/15 07:58:49 morsch | |
51 | Code from MUON-dev joined | |
52 | ||
53 | Revision 1.8.4.9 2000/06/12 19:20:49 morsch | |
54 | Constructor sets default geometry, segmentation and response parameters. | |
55 | ||
56 | Revision 1.8.4.8 2000/06/09 21:55:28 morsch | |
57 | Most coding rule violations corrected. | |
58 | ||
59 | Revision 1.8.4.7 2000/05/02 13:15:18 morsch | |
60 | Coding rule violations RS3, RN13 corected | |
61 | ||
62 | Revision 1.8.4.6 2000/05/02 10:24:26 morsch | |
63 | Public access to fdGas and fdAlu of AliMUONChamber replaced by getters. | |
64 | ||
65 | Revision 1.8.4.5 2000/04/26 19:58:47 morsch | |
66 | Obsolete reference to trig_ removed. | |
67 | ||
68 | Revision 1.8.4.4 2000/04/19 19:42:47 morsch | |
69 | change NCH to kNCH | |
70 | ||
71 | Revision 1.8.4.3 2000/02/17 08:17:43 morsch | |
72 | Gammas and neutrons are also scored in the stepmanager | |
73 | */ | |
74 | ||
75 | ///////////////////////////////////////////////////////// | |
76 | // Manager and hits classes for set:MUON version 0 // | |
77 | ///////////////////////////////////////////////////////// | |
78 | ||
79 | #include <TTUBE.h> | |
80 | #include <TNode.h> | |
81 | #include <TRandom.h> | |
82 | #include <TLorentzVector.h> | |
83 | #include <iostream.h> | |
84 | ||
85 | #include "AliMUONv0.h" | |
86 | #include "AliMUONChamber.h" | |
87 | #include "AliRun.h" | |
88 | #include "AliMC.h" | |
89 | #include "AliMagF.h" | |
90 | #include "AliMUONHit.h" | |
91 | #include "AliMUONPadHit.h" | |
92 | #include "AliCallf77.h" | |
93 | #include "AliConst.h" | |
94 | #include "AliMUONConstants.h" | |
95 | #include "AliMUONFactory.h" | |
96 | ClassImp(AliMUONv0) | |
97 | ||
98 | //___________________________________________ | |
99 | AliMUONv0::AliMUONv0() : AliMUON() | |
100 | { | |
101 | // Constructor | |
102 | fChambers = 0; | |
103 | } | |
104 | ||
105 | //___________________________________________ | |
106 | AliMUONv0::AliMUONv0(const char *name, const char *title) | |
107 | : AliMUON(name,title) | |
108 | { | |
109 | // Constructor | |
110 | AliMUONFactory::Build(this, "default"); | |
111 | } | |
112 | ||
113 | void AliMUONv0::CreateGeometry() | |
114 | { | |
115 | // Creates coarse geometry for hit density simulations | |
116 | Int_t *idtmed = fIdtmed->GetArray()-1099; | |
117 | // | |
118 | Float_t zpos, dAlu, tpar[3]; | |
119 | Int_t idAir=idtmed[1100]; | |
120 | Int_t idAlu=idtmed[1103]; | |
121 | ||
122 | AliMUONChamber *iChamber; | |
123 | // Loop over all chambers (tracking and trigger) | |
124 | for (Int_t ch = 0; ch < AliMUONConstants::NCh(); ch++) { | |
125 | char alu[8]; | |
126 | char gas[8]; | |
127 | ||
128 | iChamber=(AliMUONChamber*) (*fChambers)[ch]; | |
129 | // Z of the chamber | |
130 | zpos=iChamber->Z(); | |
131 | dAlu=iChamber->DAlu(); | |
132 | if (ch < AliMUONConstants::NTrackingCh()) { | |
133 | // tracking chambers | |
134 | sprintf(alu,"CA0%1d",ch); | |
135 | sprintf(gas,"CG0%1d",ch); | |
136 | } else { | |
137 | // trigger chambers | |
138 | sprintf(alu,"CA%2d",ch); | |
139 | sprintf(gas,"CG%2d",ch); | |
140 | } | |
141 | // | |
142 | tpar[0] = iChamber->RInner(); | |
143 | tpar[1] = iChamber->ROuter(); | |
144 | tpar[2] = (dAlu+0.2)/2.; | |
145 | if (ch !=4 && ch !=5) { | |
146 | gMC->Gsvolu(alu, "TUBE", idAlu, tpar, 3); | |
147 | tpar[2] = 0.1; | |
148 | gMC->Gsvolu(gas, "TUBE", idAir, tpar, 3); | |
149 | } else { | |
150 | gMC->Gsvolu(alu, "TUBE", idAlu, tpar, 3); | |
151 | tpar[2] = 0.1; | |
152 | gMC->Gsvolu(gas, "TUBE", idAir, tpar, 3); | |
153 | } | |
154 | gMC->Gspos(gas, 1, alu, 0., 0., 0., 0, "ONLY"); | |
155 | if (ch == 4 || ch ==5) { | |
156 | if (gMC->VolId("DDIP")) { | |
157 | gMC->Gspos(alu, 1, "DDIP", 0., 0., zpos, 0, "ONLY"); | |
158 | } else { | |
159 | gMC->Gspos(alu, 1, "ALIC", 0., 0., zpos, 0, "ONLY"); | |
160 | } | |
161 | } else { | |
162 | gMC->Gspos(alu, 1, "ALIC", 0., 0., zpos, 0, "ONLY"); | |
163 | } | |
164 | } | |
165 | } | |
166 | ||
167 | //___________________________________________ | |
168 | void AliMUONv0::CreateMaterials() | |
169 | { | |
170 | // Creates materials for coarse geometry | |
171 | AliMaterial(15, "AIR$ ", 14.61, 7.3, .001205, 30423.24, 67500); | |
172 | AliMaterial( 9, "ALUMINIUM$", 26.98, 13. , 2.7, 8.9, 37.2); | |
173 | ||
174 | Float_t epsil = .001; // Tracking precision, | |
175 | Float_t stemax = -1.; // Maximum displacement for multiple scat | |
176 | Float_t tmaxfd = -20.; // Maximum angle due to field deflection | |
177 | Float_t deemax = -.3; // Maximum fractional energy loss, DLS | |
178 | Float_t stmin = -.8; | |
179 | Int_t isxfld = gAlice->Field()->Integ(); | |
180 | Float_t sxmgmx = gAlice->Field()->Max(); | |
181 | ||
182 | // | |
183 | // Air | |
184 | AliMedium(1, "AIR_CH_US ", 15, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin); | |
185 | AliMedium(4, "ALU_CH_US ", 9, 0, isxfld, sxmgmx, tmaxfd, fMaxStepAlu, | |
186 | fMaxDestepAlu, epsil, stmin); | |
187 | ||
188 | } | |
189 | ||
190 | void AliMUONv0::Init() | |
191 | { | |
192 | // | |
193 | // Initialize Tracking Chambers | |
194 | // | |
195 | char vName[8]; | |
196 | printf("\n\n\n Start Init for version 0 - CPC chamber type\n\n\n"); | |
197 | for (Int_t i=0; i<AliMUONConstants::NCh(); i++) { | |
198 | // Initialise chamber | |
199 | ((AliMUONChamber*) (*fChambers)[i])->Init(); | |
200 | // Set sensitive volume Id | |
201 | if (i < AliMUONConstants::NTrackingCh()) { | |
202 | // tracking chambers | |
203 | sprintf(vName,"CG0%1d",i); | |
204 | } else { | |
205 | // trigger chambers | |
206 | sprintf(vName,"CG%2d",i); | |
207 | } | |
208 | ((AliMUONChamber*) (*fChambers)[i])->SetGid(gMC->VolId(vName)); | |
209 | } | |
210 | } | |
211 | ||
212 | void AliMUONv0::StepManager() | |
213 | { | |
214 | // | |
215 | // Step manager for hit density simulations | |
216 | Int_t copy, id; | |
217 | static Int_t idvol; | |
218 | static Int_t vol[2]; | |
219 | Int_t ipart; | |
220 | TLorentzVector pos; | |
221 | TLorentzVector mom; | |
222 | Float_t theta,phi; | |
223 | ||
224 | // modifs perso | |
225 | static Float_t hits[15]; | |
226 | ||
227 | TClonesArray &lhits = *fHits; | |
228 | // | |
229 | // Only gas gap inside chamber | |
230 | // Tag chambers and record hits when track enters | |
231 | idvol=-1; | |
232 | id=gMC->CurrentVolID(copy); | |
233 | ||
234 | for (Int_t i=1; i<=AliMUONConstants::NCh(); i++) { | |
235 | if(id==((AliMUONChamber*)(*fChambers)[i-1])->GetGid()){ | |
236 | vol[0]=i; | |
237 | idvol=i-1; | |
238 | } | |
239 | } | |
240 | if (idvol == -1) return; | |
241 | // | |
242 | // Get current particle id (ipart), track position (pos) and momentum (mom) | |
243 | gMC->TrackPosition(pos); | |
244 | gMC->TrackMomentum(mom); | |
245 | ||
246 | ipart = gMC->TrackPid(); | |
247 | // | |
248 | // record hits when track enters ... | |
249 | if( !(gMC->TrackCharge()) ) return; | |
250 | if( gMC->IsTrackEntering()) { | |
251 | // printf("\n Particle entering %f %f %f", pos[0], pos[1], pos[2] ); | |
252 | ||
253 | Double_t tc = mom[0]*mom[0]+mom[1]*mom[1]; | |
254 | Double_t rt = TMath::Sqrt(tc); | |
255 | theta = Float_t(TMath::ATan2(rt,Double_t(mom[2])))*kRaddeg; | |
256 | phi = Float_t(TMath::ATan2(Double_t(mom[1]),Double_t(mom[0])))*kRaddeg; | |
257 | hits[0] = Float_t(ipart); // Geant3 particle type | |
258 | hits[1] = pos[0]; // X-position for hit | |
259 | hits[2] = pos[1]; // Y-position for hit | |
260 | hits[3] = pos[2]; // Z-position for hit | |
261 | hits[4] = theta; // theta angle of incidence | |
262 | hits[5] = phi; // phi angle of incidence | |
263 | hits[8] = -1; // first padhit | |
264 | hits[9] = -1; // last pad hit | |
265 | hits[10] = mom[3]; // hit Energy | |
266 | hits[11] = mom[0]; // Px | |
267 | hits[12] = mom[1]; // Py | |
268 | hits[13] = mom[2]; // Pz | |
269 | hits[14] = gMC->TrackTime(); // time of flight | |
270 | new(lhits[fNhits++]) | |
271 | AliMUONHit(fIshunt,gAlice->CurrentTrack(),vol,hits); | |
272 | ||
273 | } | |
274 | // if( gMC->IsTrackExiting()) gMC->StopTrack(); | |
275 | } | |
276 | ||
277 | ||
278 | ||
279 | ||
280 | ||
281 | ||
282 | ||
283 | ||
284 |