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 1.21 2002/02/20 14:01:40 hristov
19 Compare a TString with a string, otherwise the conversion cannot be done on Sun
21 Revision 1.20 2002/02/13 16:58:37 cblume
22 Bug fix reported by Jiri. Make atoi input zero terminated in StepManager()
24 Revision 1.19 2002/02/11 14:25:27 cblume
25 Geometry update, compressed hit structure
27 Revision 1.18 2000/11/30 17:38:08 cblume
28 Changes to get in line with new STEER and EVGEN
30 Revision 1.17 2000/11/01 14:53:21 cblume
31 Merge with TRD-develop
33 Revision 1.14.2.3 2000/10/06 16:49:46 cblume
36 Revision 1.14.2.2 2000/10/04 16:34:58 cblume
37 Replace include files by forward declarations
39 Revision 1.14.2.1 2000/09/18 13:48:18 cblume
40 Adapt to new AliTRDhit
42 Revision 1.16 2000/06/08 18:32:58 cblume
43 Make code compliant to coding conventions
45 Revision 1.15 2000/06/07 16:25:37 cblume
46 Try to remove compiler warnings on Sun and HP
48 Revision 1.14 2000/02/28 19:10:26 cblume
49 Include the new TRD classes
51 Revision 1.13.4.1 2000/02/28 18:01:53 cblume
52 Change to new hit version and introduce geometry class
54 Revision 1.13 1999/11/05 22:50:28 fca
55 Do not use Atan, removed from ROOT too
57 Revision 1.12 1999/11/02 16:35:56 fca
58 New version of TRD introduced
60 Revision 1.11 1999/11/01 20:41:51 fca
61 Added protections against using the wrong version of FRAME
63 Revision 1.10 1999/09/29 09:24:35 fca
64 Introduction of the Copyright and cvs Log
68 ///////////////////////////////////////////////////////////////////////////////
70 // Transition Radiation Detector version 0 -- fast simulator //
74 <img src="picts/AliTRDfullClass.gif">
79 ///////////////////////////////////////////////////////////////////////////////
86 #include <TLorentzVector.h>
92 #include "AliTRDhit.h"
93 #include "AliTRDgeometry.h"
97 //_____________________________________________________________________________
98 AliTRDv0::AliTRDv0():AliTRD()
101 // AliTRDv0 default constructor
108 //_____________________________________________________________________________
109 AliTRDv0::AliTRDv0(const char *name, const char *title)
113 // Standard constructor for Transition Radiation Detector version 0
120 //_____________________________________________________________________________
121 AliTRDv0::~AliTRDv0()
124 // AliTRDv0 destructor
129 //_____________________________________________________________________________
130 void AliTRDv0::CreateGeometry()
133 // Create the GEANT geometry for the Transition Radiation Detector - Version 0
134 // This version covers the full azimuth.
137 // Check that FRAME is there otherwise we have no place where to put the TRD
138 AliModule* frame = gAlice->GetModule("FRAME");
141 // Define the chambers
142 AliTRD::CreateGeometry();
146 //_____________________________________________________________________________
147 void AliTRDv0::CreateMaterials()
150 // Create materials for the Transition Radiation Detector
153 AliTRD::CreateMaterials();
157 //_____________________________________________________________________________
158 void AliTRDv0::Init()
161 // Initialize Transition Radiation Detector after geometry is built
166 printf(" Fast simulator\n\n");
167 for (Int_t i = 0; i < 80; i++) printf("*");
172 //_____________________________________________________________________________
173 void AliTRDv0::StepManager()
176 // Procedure called at every step in the TRD
177 // Fast simulator. If switched on, a hit is produced when a track
178 // crosses the border between amplification region and pad plane.
190 // Use pad plane as sensitive volume
191 TString cIdSens = "L";
193 Char_t cIdChamber[3];
196 const Int_t kNplan = AliTRDgeometry::Nplan();
198 // Writing out hits enabled?
199 if (!(fHitsOn)) return;
201 // Use only charged tracks and count them only once per volume
202 if (gMC->TrackCharge() &&
203 gMC->IsTrackEntering()) {
205 // Check on sensitive volume
206 cIdCurrent = gMC->CurrentVolName();
207 if (cIdSens == cIdCurrent[1]) {
209 gMC->TrackPosition(p);
210 for (Int_t i = 0; i < 3; i++) hits[i] = p[i];
212 // The sector number (0 - 17)
213 // The numbering goes clockwise and starts at y = 0
214 Float_t phi = kRaddeg*TMath::ATan2(hits[0],hits[1]);
219 sec = ((Int_t) (phi / 20));
221 // The plane and chamber number
222 cIdChamber[0] = cIdCurrent[2];
223 cIdChamber[1] = cIdCurrent[3];
224 Int_t idChamber = atoi(cIdChamber);
225 cha = ((Int_t) idChamber / kNplan);
226 pla = ((Int_t) idChamber % kNplan);
227 det = fGeometry->GetDetector(pla,cha,sec);
229 AddHit(gAlice->CurrentTrack(),det,hits,0,kTRUE);