1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
18 Revision 1.17 2001/03/17 10:07:20 morsch
19 Correct inconsistent variable name / method name / comments.
21 Revision 1.16 2001/01/27 08:50:50 morsch
22 Call non default constructors of segmentation classes.
24 Revision 1.15 2001/01/17 20:57:45 hristov
25 Unused variable removed
27 Revision 1.14 2000/12/21 22:42:55 morsch
28 Constructor contains default set-up for segmentation.
29 Record charged particles only.
31 Revision 1.13 2000/10/06 10:03:38 morsch
32 Call to gMC->VolId() moved to Init()
34 Revision 1.12 2000/10/02 21:28:09 fca
35 Removal of useless dependecies via forward declarations
37 Revision 1.11 2000/06/27 07:31:07 morsch
38 fChambers = 0; deleted from constructor.
40 Revision 1.10 2000/06/26 14:02:38 morsch
41 Add class AliMUONConstants with MUON specific constants using static memeber data and access methods.
43 Revision 1.9 2000/06/15 07:58:49 morsch
44 Code from MUON-dev joined
46 Revision 1.8.4.9 2000/06/12 19:20:49 morsch
47 Constructor sets default geometry, segmentation and response parameters.
49 Revision 1.8.4.8 2000/06/09 21:55:28 morsch
50 Most coding rule violations corrected.
52 Revision 1.8.4.7 2000/05/02 13:15:18 morsch
53 Coding rule violations RS3, RN13 corected
55 Revision 1.8.4.6 2000/05/02 10:24:26 morsch
56 Public access to fdGas and fdAlu of AliMUONChamber replaced by getters.
58 Revision 1.8.4.5 2000/04/26 19:58:47 morsch
59 Obsolete reference to trig_ removed.
61 Revision 1.8.4.4 2000/04/19 19:42:47 morsch
64 Revision 1.8.4.3 2000/02/17 08:17:43 morsch
65 Gammas and neutrons are also scored in the stepmanager
68 /////////////////////////////////////////////////////////
69 // Manager and hits classes for set:MUON version 0 //
70 /////////////////////////////////////////////////////////
75 #include <TLorentzVector.h>
78 #include "AliMUONv0.h"
79 #include "AliMUONChamber.h"
83 #include "AliMUONHit.h"
84 #include "AliMUONPadHit.h"
85 #include "AliCallf77.h"
87 #include "AliMUONConstants.h"
88 #include "AliMUONFactory.h"
91 //___________________________________________
92 AliMUONv0::AliMUONv0() : AliMUON()
98 //___________________________________________
99 AliMUONv0::AliMUONv0(const char *name, const char *title)
100 : AliMUON(name,title)
103 AliMUONFactory::Build(this, "default");
106 void AliMUONv0::CreateGeometry()
108 // Creates coarse geometry for hit density simulations
109 Int_t *idtmed = fIdtmed->GetArray()-1099;
111 Float_t zpos, dAlu, tpar[3];
112 Int_t idAir=idtmed[1100];
113 Int_t idAlu=idtmed[1103];
115 AliMUONChamber *iChamber;
116 // Loop over all chambers (tracking and trigger)
117 for (Int_t ch = 0; ch < AliMUONConstants::NCh(); ch++) {
121 iChamber=(AliMUONChamber*) (*fChambers)[ch];
124 dAlu=iChamber->DAlu();
125 if (ch < AliMUONConstants::NTrackingCh()) {
127 sprintf(alu,"CA0%1d",ch);
128 sprintf(gas,"CG0%1d",ch);
131 sprintf(alu,"CA%2d",ch);
132 sprintf(gas,"CG%2d",ch);
135 tpar[0] = iChamber->RInner();
136 tpar[1] = iChamber->ROuter();
137 tpar[2] = (dAlu+0.2)/2.;
138 if (ch !=4 && ch !=5) {
139 gMC->Gsvolu(alu, "TUBE", idAlu, tpar, 3);
141 gMC->Gsvolu(gas, "TUBE", idAir, tpar, 3);
143 gMC->Gsvolu(alu, "TUBE", idAlu, tpar, 3);
145 gMC->Gsvolu(gas, "TUBE", idAir, tpar, 3);
147 gMC->Gspos(gas, 1, alu, 0., 0., 0., 0, "ONLY");
148 gMC->Gspos(alu, 1, "ALIC", 0., 0., zpos, 0, "ONLY");
152 //___________________________________________
153 void AliMUONv0::CreateMaterials()
155 // Creates materials for coarse geometry
156 AliMaterial(15, "AIR$ ", 14.61, 7.3, .001205, 30423.24, 67500);
157 AliMaterial(9, "ALUMINIUM$", 26.98, 13., 2.7, 8.9, 37.2);
159 Float_t epsil = .001; // Tracking precision,
160 Float_t stemax = -1.; // Maximum displacement for multiple scat
161 Float_t tmaxfd = -20.; // Maximum angle due to field deflection
162 Float_t deemax = -.3; // Maximum fractional energy loss, DLS
164 Int_t isxfld = gAlice->Field()->Integ();
165 Float_t sxmgmx = gAlice->Field()->Max();
169 AliMedium(1, "AIR_CH_US ", 15, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
170 AliMedium(4, "ALU_CH_US ", 9, 0, isxfld, sxmgmx, tmaxfd, fMaxStepAlu,
171 fMaxDestepAlu, epsil, stmin);
175 void AliMUONv0::Init()
178 // Initialize Tracking Chambers
181 printf("\n\n\n Start Init for version 0 - CPC chamber type\n\n\n");
182 for (Int_t i=0; i<AliMUONConstants::NCh(); i++) {
183 // Initialise chamber
184 ((AliMUONChamber*) (*fChambers)[i])->Init();
185 // Set sensitive volume Id
186 if (i < AliMUONConstants::NTrackingCh()) {
188 sprintf(vName,"CG0%1d",i);
191 sprintf(vName,"CG%2d",i);
193 ((AliMUONChamber*) (*fChambers)[i])->SetGid(gMC->VolId(vName));
197 void AliMUONv0::StepManager()
200 // Step manager for hit density simulations
210 static Float_t hits[15];
212 TClonesArray &lhits = *fHits;
214 // Only gas gap inside chamber
215 // Tag chambers and record hits when track enters
217 id=gMC->CurrentVolID(copy);
219 for (Int_t i=1; i<=AliMUONConstants::NCh(); i++) {
220 if(id==((AliMUONChamber*)(*fChambers)[i-1])->GetGid()){
225 if (idvol == -1) return;
227 // Get current particle id (ipart), track position (pos) and momentum (mom)
228 gMC->TrackPosition(pos);
229 gMC->TrackMomentum(mom);
231 ipart = gMC->TrackPid();
233 // record hits when track enters ...
234 if( !(gMC->TrackCharge()) ) return;
235 if( gMC->IsTrackEntering()) {
236 Double_t tc = mom[0]*mom[0]+mom[1]*mom[1];
237 Double_t rt = TMath::Sqrt(tc);
238 theta = Float_t(TMath::ATan2(rt,Double_t(mom[2])))*kRaddeg;
239 phi = Float_t(TMath::ATan2(Double_t(mom[1]),Double_t(mom[0])))*kRaddeg;
240 hits[0] = Float_t(ipart); // Geant3 particle type
241 hits[1] = pos[0]; // X-position for hit
242 hits[2] = pos[1]; // Y-position for hit
243 hits[3] = pos[2]; // Z-position for hit
244 hits[4] = theta; // theta angle of incidence
245 hits[5] = phi; // phi angle of incidence
246 hits[8] = -1; // first padhit
247 hits[9] = -1; // last pad hit
248 hits[10] = mom[3]; // hit Energy
249 hits[11] = mom[0]; // Px
250 hits[12] = mom[1]; // Py
251 hits[13] = mom[2]; // Pz
252 hits[14] = gMC->TrackTime(); // time of flight
254 AliMUONHit(fIshunt,gAlice->CurrentTrack(),vol,hits);