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Bugfix in AliPoints2Memory
[u/mrichter/AliRoot.git] / MUON / AliMUONv0.cxx
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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$Log$
b74f1c6a 18Revision 1.20 2001/10/30 12:18:45 morsch
19Place station 3 into DDIP only if DDIP is present.
20
82e22b99 21Revision 1.19 2001/07/17 09:51:38 morsch
22Place station 3 inside Dipole.
23
afa281f0 24Revision 1.18 2001/04/06 11:24:43 morsch
25Dependency on implementations of AliSegmentation and AliMUONResponse moved to AliMUONFactory class.
26Static method Build() builds the MUON system out of chambers, segmentation and response.
27
be3bb6c1 28Revision 1.17 2001/03/17 10:07:20 morsch
29Correct inconsistent variable name / method name / comments.
30
2eb55fab 31Revision 1.16 2001/01/27 08:50:50 morsch
32Call non default constructors of segmentation classes.
33
c687f06a 34Revision 1.15 2001/01/17 20:57:45 hristov
35Unused variable removed
36
a7e8b51a 37Revision 1.14 2000/12/21 22:42:55 morsch
38Constructor contains default set-up for segmentation.
39Record charged particles only.
40
9fde056a 41Revision 1.13 2000/10/06 10:03:38 morsch
42Call to gMC->VolId() moved to Init()
43
b9046b8f 44Revision 1.12 2000/10/02 21:28:09 fca
45Removal of useless dependecies via forward declarations
46
94de3818 47Revision 1.11 2000/06/27 07:31:07 morsch
48fChambers = 0; deleted from constructor.
49
c20a5a2a 50Revision 1.10 2000/06/26 14:02:38 morsch
51Add class AliMUONConstants with MUON specific constants using static memeber data and access methods.
52
f665c1ea 53Revision 1.9 2000/06/15 07:58:49 morsch
54Code from MUON-dev joined
55
a9e2aefa 56Revision 1.8.4.9 2000/06/12 19:20:49 morsch
57Constructor sets default geometry, segmentation and response parameters.
58
59Revision 1.8.4.8 2000/06/09 21:55:28 morsch
60Most coding rule violations corrected.
61
62Revision 1.8.4.7 2000/05/02 13:15:18 morsch
63Coding rule violations RS3, RN13 corected
64
65Revision 1.8.4.6 2000/05/02 10:24:26 morsch
66Public access to fdGas and fdAlu of AliMUONChamber replaced by getters.
67
68Revision 1.8.4.5 2000/04/26 19:58:47 morsch
69Obsolete reference to trig_ removed.
70
71Revision 1.8.4.4 2000/04/19 19:42:47 morsch
72change NCH to kNCH
73
74Revision 1.8.4.3 2000/02/17 08:17:43 morsch
75Gammas and neutrons are also scored in the stepmanager
4c039060 76*/
77
fe4da5cc 78/////////////////////////////////////////////////////////
79// Manager and hits classes for set:MUON version 0 //
80/////////////////////////////////////////////////////////
81
82#include <TTUBE.h>
83#include <TNode.h>
84#include <TRandom.h>
a897a37a 85#include <TLorentzVector.h>
a9e2aefa 86#include <iostream.h>
fe4da5cc 87
88#include "AliMUONv0.h"
a9e2aefa 89#include "AliMUONChamber.h"
fe4da5cc 90#include "AliRun.h"
91#include "AliMC.h"
94de3818 92#include "AliMagF.h"
a9e2aefa 93#include "AliMUONHit.h"
94#include "AliMUONPadHit.h"
fe4da5cc 95#include "AliCallf77.h"
96#include "AliConst.h"
f665c1ea 97#include "AliMUONConstants.h"
be3bb6c1 98#include "AliMUONFactory.h"
fe4da5cc 99ClassImp(AliMUONv0)
100
101//___________________________________________
102AliMUONv0::AliMUONv0() : AliMUON()
103{
a9e2aefa 104// Constructor
fe4da5cc 105 fChambers = 0;
106}
107
108//___________________________________________
109AliMUONv0::AliMUONv0(const char *name, const char *title)
110 : AliMUON(name,title)
111{
a9e2aefa 112// Constructor
be3bb6c1 113 AliMUONFactory::Build(this, "default");
a897a37a 114}
115
a9e2aefa 116void AliMUONv0::CreateGeometry()
117{
118// Creates coarse geometry for hit density simulations
119 Int_t *idtmed = fIdtmed->GetArray()-1099;
fe4da5cc 120//
a9e2aefa 121 Float_t zpos, dAlu, tpar[3];
122 Int_t idAir=idtmed[1100];
123 Int_t idAlu=idtmed[1103];
124
125 AliMUONChamber *iChamber;
126 // Loop over all chambers (tracking and trigger)
f665c1ea 127 for (Int_t ch = 0; ch < AliMUONConstants::NCh(); ch++) {
a9e2aefa 128 char alu[8];
129 char gas[8];
130
131 iChamber=(AliMUONChamber*) (*fChambers)[ch];
132 // Z of the chamber
133 zpos=iChamber->Z();
134 dAlu=iChamber->DAlu();
f665c1ea 135 if (ch < AliMUONConstants::NTrackingCh()) {
a9e2aefa 136 // tracking chambers
b74f1c6a 137 sprintf(alu,"SA0%1d",ch);
138 sprintf(gas,"SG0%1d",ch);
a9e2aefa 139 } else {
140 // trigger chambers
b74f1c6a 141 sprintf(alu,"SA%2d",ch);
142 sprintf(gas,"SG%2d",ch);
a9e2aefa 143 }
144//
a9e2aefa 145 tpar[0] = iChamber->RInner();
146 tpar[1] = iChamber->ROuter();
147 tpar[2] = (dAlu+0.2)/2.;
148 if (ch !=4 && ch !=5) {
149 gMC->Gsvolu(alu, "TUBE", idAlu, tpar, 3);
150 tpar[2] = 0.1;
151 gMC->Gsvolu(gas, "TUBE", idAir, tpar, 3);
152 } else {
153 gMC->Gsvolu(alu, "TUBE", idAlu, tpar, 3);
154 tpar[2] = 0.1;
155 gMC->Gsvolu(gas, "TUBE", idAir, tpar, 3);
156 }
157 gMC->Gspos(gas, 1, alu, 0., 0., 0., 0, "ONLY");
afa281f0 158 if (ch == 4 || ch ==5) {
82e22b99 159 if (gMC->VolId("DDIP")) {
160 gMC->Gspos(alu, 1, "DDIP", 0., 0., zpos, 0, "ONLY");
161 } else {
162 gMC->Gspos(alu, 1, "ALIC", 0., 0., zpos, 0, "ONLY");
163 }
afa281f0 164 } else {
165 gMC->Gspos(alu, 1, "ALIC", 0., 0., zpos, 0, "ONLY");
166 }
a897a37a 167 }
fe4da5cc 168}
169
fe4da5cc 170//___________________________________________
171void AliMUONv0::CreateMaterials()
172{
a9e2aefa 173// Creates materials for coarse geometry
82e22b99 174 AliMaterial(15, "AIR$ ", 14.61, 7.3, .001205, 30423.24, 67500);
175 AliMaterial( 9, "ALUMINIUM$", 26.98, 13. , 2.7, 8.9, 37.2);
fe4da5cc 176
a9e2aefa 177 Float_t epsil = .001; // Tracking precision,
178 Float_t stemax = -1.; // Maximum displacement for multiple scat
179 Float_t tmaxfd = -20.; // Maximum angle due to field deflection
180 Float_t deemax = -.3; // Maximum fractional energy loss, DLS
181 Float_t stmin = -.8;
182 Int_t isxfld = gAlice->Field()->Integ();
183 Float_t sxmgmx = gAlice->Field()->Max();
fe4da5cc 184
fe4da5cc 185 //
a9e2aefa 186 // Air
187 AliMedium(1, "AIR_CH_US ", 15, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
82e22b99 188 AliMedium(4, "ALU_CH_US ", 9, 0, isxfld, sxmgmx, tmaxfd, fMaxStepAlu,
a897a37a 189 fMaxDestepAlu, epsil, stmin);
190
fe4da5cc 191}
192
fe4da5cc 193void AliMUONv0::Init()
194{
fe4da5cc 195 //
196 // Initialize Tracking Chambers
197 //
b9046b8f 198 char vName[8];
199 printf("\n\n\n Start Init for version 0 - CPC chamber type\n\n\n");
200 for (Int_t i=0; i<AliMUONConstants::NCh(); i++) {
201// Initialise chamber
202 ((AliMUONChamber*) (*fChambers)[i])->Init();
203// Set sensitive volume Id
204 if (i < AliMUONConstants::NTrackingCh()) {
205 // tracking chambers
b74f1c6a 206 sprintf(vName,"SG0%1d",i);
b9046b8f 207 } else {
208 // trigger chambers
b74f1c6a 209 sprintf(vName,"SG%2d",i);
b9046b8f 210 }
211 ((AliMUONChamber*) (*fChambers)[i])->SetGid(gMC->VolId(vName));
212 }
fe4da5cc 213}
214
fe4da5cc 215void AliMUONv0::StepManager()
216{
a9e2aefa 217//
218// Step manager for hit density simulations
fe4da5cc 219 Int_t copy, id;
220 static Int_t idvol;
221 static Int_t vol[2];
222 Int_t ipart;
a897a37a 223 TLorentzVector pos;
224 TLorentzVector mom;
225 Float_t theta,phi;
fe4da5cc 226
a897a37a 227 // modifs perso
a9e2aefa 228 static Float_t hits[15];
a897a37a 229
fe4da5cc 230 TClonesArray &lhits = *fHits;
fe4da5cc 231 //
232 // Only gas gap inside chamber
233 // Tag chambers and record hits when track enters
234 idvol=-1;
0a6d8768 235 id=gMC->CurrentVolID(copy);
fe4da5cc 236
f665c1ea 237 for (Int_t i=1; i<=AliMUONConstants::NCh(); i++) {
a9e2aefa 238 if(id==((AliMUONChamber*)(*fChambers)[i-1])->GetGid()){
fe4da5cc 239 vol[0]=i;
240 idvol=i-1;
241 }
242 }
243 if (idvol == -1) return;
244 //
245 // Get current particle id (ipart), track position (pos) and momentum (mom)
cfce8870 246 gMC->TrackPosition(pos);
247 gMC->TrackMomentum(mom);
fe4da5cc 248
cfce8870 249 ipart = gMC->TrackPid();
fe4da5cc 250 //
251 // record hits when track enters ...
9fde056a 252 if( !(gMC->TrackCharge()) ) return;
0a6d8768 253 if( gMC->IsTrackEntering()) {
82e22b99 254// printf("\n Particle entering %f %f %f", pos[0], pos[1], pos[2] );
255
a897a37a 256 Double_t tc = mom[0]*mom[0]+mom[1]*mom[1];
257 Double_t rt = TMath::Sqrt(tc);
a897a37a 258 theta = Float_t(TMath::ATan2(rt,Double_t(mom[2])))*kRaddeg;
259 phi = Float_t(TMath::ATan2(Double_t(mom[1]),Double_t(mom[0])))*kRaddeg;
a9e2aefa 260 hits[0] = Float_t(ipart); // Geant3 particle type
261 hits[1] = pos[0]; // X-position for hit
262 hits[2] = pos[1]; // Y-position for hit
263 hits[3] = pos[2]; // Z-position for hit
264 hits[4] = theta; // theta angle of incidence
265 hits[5] = phi; // phi angle of incidence
266 hits[8] = -1; // first padhit
267 hits[9] = -1; // last pad hit
2eb55fab 268 hits[10] = mom[3]; // hit Energy
269 hits[11] = mom[0]; // Px
270 hits[12] = mom[1]; // Py
271 hits[13] = mom[2]; // Pz
272 hits[14] = gMC->TrackTime(); // time of flight
fe4da5cc 273 new(lhits[fNhits++])
a9e2aefa 274 AliMUONHit(fIshunt,gAlice->CurrentTrack(),vol,hits);
275
fe4da5cc 276 }
82e22b99 277// if( gMC->IsTrackExiting()) gMC->StopTrack();
fe4da5cc 278}
a9e2aefa 279
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