ACORDE/AliACORDEv0.cxx

   1 /**************************************************************************
   2  * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
   3  *                                                                        *
   4  * Author: The ALICE Off-line Project.                                    *
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   7  * Permission to use, copy, modify and distribute this software and its   *
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  10  * copies and that both the copyright notice and this permission notice   *
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  15
  16 /* $Id$ */
  17
  18 ///////////////////////////////////////////////////////////////////////////////
  19 //                                                                           //
  20 // ALICE Cosmic Ray Trigger                                                  //
  21 //                                                                           //
  22 //  This class contains the functions for version 0 of the ALICE Cosmic Ray  //
  23 //  Trigger. This version will be used to simulation comic rays in alice with//
  24 //  all the detectors. It include geometry and hits (posicion and momentum)  //
  25 //                                                                           //
  26 //                  Send comments to:                                        //
  27 //      Arturo Fernandez <afernand@fcfm.buap.mx>                             //
  28 //      Enrique Gamez    <egamez@fcfm.buap.mx>                               //
  29 //      Eleazar Cuautle  <ecuautle@nucleares.unam.mx>                        //
  30 ///////////////////////////////////////////////////////////////////////////////
  31
  32
  33 #include "AliACORDEv0.h"
  34 #include <TClonesArray.h>
  35 #include <TLorentzVector.h>
  36 #include <TVirtualMC.h>
  37 #include <TPDGCode.h>
  38
  39
  40 #include "AliRun.h"
  41 #include "AliConst.h"
  42 #include "AliACORDEhit.h"
  43 #include "AliACORDEConstants.h"
  44 #include "AliMC.h"
  45 #include "AliLog.h"
  46
  47 ClassImp(AliACORDEv0)
  48
  49 //_____________________________________________________________________________
  50 AliACORDEv0::AliACORDEv0()
  51   : AliACORDE()
  52 {
  53   //
  54   // Default constructor
  55   fIshunt = 0;
  56   fHits = 0;
  57   //
  58 }
  59 //_____________________________________________________________________________
  60 AliACORDEv0::AliACORDEv0(const char *name, const char *title)
  61   : AliACORDE(name, title)
  62 {
  63   //
  64   // Standard constructor
  65   //
  66   fIshunt = 1; // All hits are associated with primary particles
  67   fHits =  new TClonesArray("AliACORDEhit",400);
  68   gAlice->GetMCApp()->AddHitList(fHits);
  69 }
  70 //_____________________________________________________________________________
  71 AliACORDEv0::~AliACORDEv0()
  72 {
  73   //
  74   // Default destructor
  75   //
  76 }
  77
  78 //_____________________________________________________________________________
  79 void AliACORDEv0::CreateGeometry()
  80 {
  81   CreateAcorde();
  82   if (GetCreateCavern()) CreateCavern();
  83 }
  84
  85 void AliACORDEv0::CreateCavern()
  86 {
  87   Int_t* idtmed = fIdtmed->GetArray() - 1099 ;
  88     // Create the mother volume, the one which will contain all the material
  89   // above the hall.
  90   Float_t pbox[3];
  91   pbox[0] = AliACORDEConstants::Instance()->Depth()*TMath::Tan(67.5*kDegrad);
  92   //pbox[0] = 12073;
  93   pbox[1] = AliACORDEConstants::Instance()->Depth();
  94   pbox[2] = pbox[0];
  95   gMC->Gsvolu("ACORDE", "BOX", idtmed[1114], pbox, 3);
  96   gMC->Gspos("ACORDE", 1, "ALIC", 0, 0, 0, 0, "ONLY");
  97   CreateShafts();
  98   CreateMolasse();
  99 }
 100
 101 void AliACORDEv0::CreateShafts()
 102
 103 {
 104
 105   //
 106   Int_t  idrotm[2499];    // The rotation matrix.
 107   Int_t* idtmed = fIdtmed->GetArray() - 1099 ;
 108
 109   //
 110   // Acces shafts
 111   //
 112   AliMatrix(idrotm[2001], 0, 0, 90, 0, 90, 90);
 113
 114
 115   // Create a bing cilinder to hold the main structures in the shaft.
 116   //   All the structures relative to the shaft will be put into
 117   // this volume.
 118   //   This shaft is composed by an open tube down in the hall, and
 119   // a cilinder avobe the level of the ceiling.
 120   Float_t ptube[3];
 121   ptube[0] = 0;    // inner radius
 122   ptube[1] = 1250; // outer radius
 123   ptube[2] = 5150/2; // Half lenght in Z
 124   gMC->Gsvolu("CSF1", "TUBE", idtmed[1114], ptube, 3);
 125
 126   Float_t ptubs[5];
 127   // The open section of the PX24
 128   ptubs[0] = 1150; // Inner radius
 129   ptubs[1] = 1250; // Outer radius
 130   ptubs[2] = 1300; // Half length
 131   ptubs[3] = 180 + kRaddeg*TMath::ASin(1070/ptubs[0]); // starting angle
 132   ptubs[4] = 180 -  kRaddeg*TMath::ASin(1070/ptubs[0]);
 133   gMC->Gsvolu("CSF2", "TUBS", idtmed[1116], ptubs, 5);
 134   gMC->Gspos("CSF2", 1, "CSF1", 0, 0, -ptube[2] + ptubs[2], 0, "MANY");
 135
 136   // The other part of the shaft.
 137   ptube[0] = ptubs[0]; // Inner radius
 138   ptube[1] = ptubs[1]; // Outer radius
 139   ptube[2] = 5150/2 - ptubs[2]; // Half lenght
 140   gMC->Gsvolu("CSF3", "TUBE", idtmed[1116], ptube, 3);
 141   gMC->Gspos("CSF3", 1, "CSF1", 0, 0, 5150/2 - ptube[2], 0, "MANY");
 142
 143   Float_t pbox[3];
 144   // Concrete walls along the shaft (next to the elevator.)
 145   pbox[0] = 480/2;  // Half length in X
 146   pbox[1] = 120/2;  // Half length in Y
 147   pbox[2] = 5150/2; // Half length in Z
 148   gMC->Gsvolu("CSW1", "BOX", idtmed[1116], pbox, 3);
 149   gMC->Gspos("CSW1", 1, "CSF1", 820+pbox[0],  150+pbox[1], 0, 0, "MANY");
 150   gMC->Gspos("CSW1", 2, "CSF1", 820+pbox[0], -300-pbox[1], 0, 0, "MANY");
 151
 152   //
 153   pbox[0] = 120/2;  // Half length in X
 154   pbox[1] = 750/2;  // Half length in Y
 155   pbox[2] = 5150/2; // Half length in Z
 156   gMC->Gsvolu("CSW2", "BOX", idtmed[1116], pbox, 3);
 157   gMC->Gspos("CSW2", 1, "CSF1", 820-60, 150+pbox[1], 0, 0, "MANY");
 158
 159   //
 160   pbox[0] = 120/2;  // Half length in X
 161   pbox[1] = 600/2;  // Half lenght in Y
 162   pbox[2] = 5150/2; // Half length in Z
 163   gMC->Gsvolu("CSW3", "BOX", idtmed[1116], pbox, 3);
 164   gMC->Gspos("CSW3", 1, "CSF1", 820-60, -300-pbox[1], 0, 0, "MANY");
 165
 166   // Material below the counting rooms.
 167   pbox[0] = 400/2;
 168   pbox[1] = 2300/2;
 169   pbox[2] = 300/2;
 170   gMC->Gsvolu("CSW4", "BOX", idtmed[1116], pbox, 3);
 171   gMC->Gspos("CSW4",1,"CSF1",2300/2-pbox[0],0,3000-5150/2-pbox[2], 0, "MANY");
 172
 173   // Shielding plug.
 174   pbox[0] = 1400/2;
 175   pbox[1] = 2300/2;
 176   pbox[2] = 170/2;
 177   gMC->Gsvolu("CSW5", "BOX", idtmed[1116], pbox, 3);
 178   gMC->Gspos("CSW5", 1, "CSF1", 0, 0, 3000-5150/2-130, 0, "MANY");
 179
 180   // The end of the support for the shielding plug.
 181   pbox[0] = 170/2;
 182   pbox[1] = 2300/2;
 183   pbox[2] = 300/2;
 184   gMC->Gsvolu("CSW6", "BOX", idtmed[1116], pbox, 3);
 185   gMC->Gspos("CSW6",1,"CSF1",-1400/2-pbox[0],0,3000-5150/2-pbox[2],0,"MANY");
 186
 187   // ...
 188   pbox[0] = 100/2;
 189   pbox[1] = 2300/2;
 190   pbox[2] = 450/2;
 191   gMC->Gsvolu("CSW7", "BOX", idtmed[1116], pbox, 3);
 192   gMC->Gspos("CSW7",1,"CSF1",-1400/2-170-pbox[0],0,3000-5150/2+pbox[2],0,"MANY");
 193
 194   // Material close to the pipe.
 195   pbox[0] = 300/2;
 196   pbox[1] = 2300/2;
 197   pbox[2] = 170/2;
 198   gMC->Gsvolu("CSW8", "BOX", idtmed[1116], pbox, 3);
 199   gMC->Gspos("CSW8",1,"CSF1",-2300/2+pbox[0],0,2500-5150/2,0,"MANY");
 200
 201   // Now put the shaft into the mother volume.
 202   gMC->Gspos("CSF1", 1, "ACORDE", 0, AliACORDEConstants::Instance()->Depth() - 5150/2, 2300, idrotm[2001], "MANY");
 203
 204   // PM25 Access Shaft
 205   ptube[0] = 910/2;
 206   ptube[1] = ptube[0] + 100;
 207   ptube[2] = (5150 - 1166)/2;
 208   gMC->Gsvolu("CSF4", "TUBE", idtmed[1116], ptube, 3);
 209   gMC->Gspos("CSF4", 1, "ACORDE", 2100, AliACORDEConstants::Instance()->Depth()-ptube[2], 0, idrotm[2001], "MANY");
 210
 211   // PGC2 Access Shaft
 212   ptube[0] = 1100/2;
 213   ptube[1] = ptube[0] + 100;
 214   ptube[2] = (5150 - 690)/2;
 215   gMC->Gsvolu("CSF5", "TUBE", idtmed[1116], ptube, 3);
 216   gMC->Gspos("CSF5", 1, "ACORDE", -375, AliACORDEConstants::Instance()->Depth()-ptube[2], -1900 - 2987.7, idrotm[2001], "MANY");
 217
 218 }
 219
 220
 221 void AliACORDEv0::CreateMolasse()
 222
 223 {
 224
 225   //
 226   Int_t  idrotm[2499];    // The rotation matrix.
 227   Int_t* idtmed = fIdtmed->GetArray() - 1099 ;
 228
 229   Float_t px24radius = 2300/2;
 230   Float_t px24X = 0;
 231   //Float_t px24Y = ;
 232   Float_t px24Z = 2300;
 233
 234   Float_t pm25radius = 910/2;
 235   Float_t pm25X = 2100;
 236   //Float_t pm25Y = ;
 237   Float_t pm25Z = 0;
 238
 239   Float_t pgc2radius = 1100/2;
 240   Float_t pgc2X = -375;
 241   //Float_t pgc2Y = ;
 242   Float_t pgc2Z = -(1900 + 2987.7);
 243
 244   Float_t concreteWidth = 100; // Standard width of the hall walls.
 245
 246
 247   // Create a local mother volume.
 248   Float_t pbox[3];
 249   pbox[0] = AliACORDEConstants::Instance()->Depth()*TMath::Tan(67.5*kDegrad);
 250   pbox[1] = AliACORDEConstants::Instance()->Depth()/2;
 251   pbox[2] = pbox[0];
 252   gMC->Gsvolu("CMO1", "BOX", idtmed[1114], pbox, 3);
 253
 254   // Now put the molasse exactly above the hall. OK
 255   // Above the ceiling
 256   Float_t ptubs[5];
 257   ptubs[0] = 1170;
 258   ptubs[1] = 2100 - pm25radius;
 259   ptubs[2] = 1900/2 + px24radius;
 260   ptubs[3] = 0;
 261   ptubs[4] = 180;
 262   gMC->Gsvolu("CMO2", "TUBS", idtmed[1123], ptubs, 5);
 263   gMC->Gspos("CMO2", 1, "CMO1", 0, 500-AliACORDEConstants::Instance()->Depth()/2, ptubs[2]-1900, 0, "MANY");
 264
 265   // Molasse around the RB24/26 Wall. OK
 266   ptubs[0] = 220 + 1600;
 267   ptubs[1] = AliACORDEConstants::Instance()->Depth() - ptubs[0];
 268   ptubs[2] = 2987.7/2 - 1100/4 - concreteWidth/2;
 269   ptubs[3] = 0;
 270   ptubs[4] = 180;
 271   gMC->Gsvolu("CMO3", "TUBS", idtmed[1123], ptubs, 5);
 272   gMC->Gspos("CMO3", 1, "CMO1", 70, 40-AliACORDEConstants::Instance()->Depth()/2, -1900 - ptubs[2], 0, "MANY");
 273
 274   // A big block above the RB24/26 wall. OK
 275   pbox[0] = AliACORDEConstants::Instance()->Depth()*TMath::Tan(67.5*kDegrad);
 276   pbox[1] = (AliACORDEConstants::Instance()->Depth() - 220 - 1600)/2;
 277   pbox[2] = 2987.7/2 - 1100/4 - concreteWidth/2;
 278   gMC->Gsvolu("CMO4", "BOX", idtmed[1123], pbox, 3);
 279   gMC->Gspos("CMO4", 1, "CMO1", 0, AliACORDEConstants::Instance()->Depth()/2 - pbox[1], -1900 - pbox[2], 0, "MANY");
 280   // Small blocks below the volume CMO4 on both sides of the wall RB24/26. OK
 281   pbox[0] = (AliACORDEConstants::Instance()->Depth()*TMath::Tan(67.5*kDegrad) -
 282 ptubs[0])/2;
 283   pbox[1] = AliACORDEConstants::Instance()->Depth()/2 - pbox[1];
 284   gMC->Gsvolu("CM17", "BOX", idtmed[1123], pbox, 3);
 285   gMC->Gspos("CM17", 1, "CMO1", AliACORDEConstants::Instance()->Depth()*TMath::Tan(67.5*kDegrad) - pbox[0], -AliACORDEConstants::Instance()->Depth()/2 + pbox[1], -1900 - pbox[2], 0, "MANY");
 286   gMC->Gspos("CM17", 2, "CMO1", -AliACORDEConstants::Instance()->Depth()*TMath::Tan(67.5*kDegrad)+ pbox[0], -AliACORDEConstants::Instance()->Depth()/2 + pbox[1], -1900 - pbox[2], 0, "MANY");
 287
 288   // And a big block of molasse above the hall up to the surface. OK
 289   pbox[0] = pm25X - pm25radius;
 290   pbox[1] = (AliACORDEConstants::Instance()->Depth()-500-1170)/2;
 291   pbox[2] = (1900 + 1150)/2;
 292   gMC->Gsvolu("CMO5", "BOX", idtmed[1123], pbox, 3);
 293   gMC->Gspos("CMO5", 1, "CMO1", 0,AliACORDEConstants::Instance()->Depth()/2-pbox[1], pbox[2]-1900, 0, "MANY");
 294   // Small blocks of molasse betwen the blocks CMO2, CMO5 and PM25. Ok
 295   pbox[0] = (pm25X - pm25radius - 1170)/2;
 296   pbox[1] = 1000;
 297   gMC->Gsvolu("CM16", "BOX", idtmed[1123], pbox, 3);
 298   gMC->Gspos("CM16", 1, "CMO1", 1170 + pbox[0], -AliACORDEConstants::Instance()->Depth()/2+pbox[1], pbox[2] - 1900, 0, "MANY");
 299
 300   // Molasse around the shafts.
 301   AliMatrix(idrotm[2003], 0, 0, 90, 0, 90, 90);
 302   // Around the PX24, the open section. OK
 303   ptubs[0] = px24radius + concreteWidth;
 304   ptubs[1] = ptubs[0] + 1000;
 305   ptubs[2] = (2300 - (5150 - AliACORDEConstants::Instance()->Depth()))/2;
 306   ptubs[3] = 180 + kRaddeg*TMath::ASin(1070/ptubs[0]);
 307   ptubs[4] = 180 -  kRaddeg*TMath::ASin(1070/ptubs[0]);
 308   gMC->Gsvolu("CMO6", "TUBS", idtmed[1123], ptubs, 5);
 309   gMC->Gspos("CMO6", 1, "CMO1", px24X, ptubs[2] - AliACORDEConstants::Instance()->Depth()/2, px24Z, idrotm[2003], "MANY");
 310   // Around the PX24, the closed section. OK
 311   Float_t ptube[3];
 312   ptube[0] = px24radius + concreteWidth;
 313   ptube[1] = ptube[0] + 1000;
 314   ptube[2] = (5150 - 2300)/2;
 315   gMC->Gsvolu("CMO7", "TUBE", idtmed[1123], ptube, 3);
 316   gMC->Gspos("CMO7", 1, "CMO1", px24X, AliACORDEConstants::Instance()->Depth()/2 - ptube[2], px24Z, idrotm[2003], "MANY");
 317
 318   // Around PM25. OK
 319   ptube[0] = pm25radius + concreteWidth;
 320   ptube[1] = ptube[0] + 400;
 321   ptube[2] = AliACORDEConstants::Instance()->Depth()/2;
 322   gMC->Gsvolu("CMO8", "TUBE", idtmed[1123], ptube, 3);
 323   gMC->Gspos("CMO8", 1, "CMO1", pm25X, 0, pm25Z, idrotm[2003], "MANY");
 324   // On both sides of the PM25 along the HALL.
 325   pbox[0] = (2100 + pm25radius - 1170)/2;
 326   pbox[1] = AliACORDEConstants::Instance()->Depth()/2;
 327   pbox[2] = (3*px24radius - pm25radius)/2;
 328   gMC->Gsvolu("CM18", "BOX", idtmed[1123], pbox, 3);
 329   gMC->Gspos("CM18", 1, "CMO1", 2100, 0, pbox[2] + pm25radius, 0, "MANY");
 330
 331   pbox[2] = (1900 - pm25radius)/2;
 332   gMC->Gsvolu("CM19", "BOX", idtmed[1123], pbox, 3);
 333   gMC->Gspos("CM19", 1, "CMO1", 2100, 0, -pbox[2] - pm25radius, 0, "MANY");
 334
 335   // Around the PGC2. OK
 336   ptube[0] = pgc2radius + concreteWidth;
 337   ptube[1] = 2987.7 - 740;
 338   ptube[2] = AliACORDEConstants::Instance()->Depth()/2;
 339   gMC->Gsvolu("CMO9", "TUBE", idtmed[1123], ptube, 3);
 340   gMC->Gspos("CMO9", 1, "CMO1", pgc2X, 0, pgc2Z, idrotm[2003], "MANY");
 341
 342   // On both sides of the PGC2.OK
 343   pbox[0] = (AliACORDEConstants::Instance()->Depth()*TMath::Tan(67.5*kDegrad) -
 344 1100 - 375)/2;
 345   pbox[1] = AliACORDEConstants::Instance()->Depth()/2;
 346   pbox[2] = pgc2radius + concreteWidth;
 347   gMC->Gsvolu("CM10", "BOX", idtmed[1123], pbox, 3);
 348   gMC->Gspos("CM10", 1, "CMO1", AliACORDEConstants::Instance()->Depth()*TMath::Tan(67.5*kDegrad) - pbox[0], 0, pgc2Z, 0, "MANY");
 349   gMC->Gspos("CM10", 2, "CMO1", -AliACORDEConstants::Instance()->Depth()*TMath::Tan(67.5*kDegrad) + pbox[0], 0, pgc2Z, 0, "MANY");
 350
 351   // big block of molasse behind the PX24. OK
 352   pbox[0] = AliACORDEConstants::Instance()->Depth()*TMath::Tan(67.5*kDegrad);
 353   pbox[1] = AliACORDEConstants::Instance()->Depth()/2;
 354   pbox[2] = (pbox[0] - (2300 + 1150 + 100))/2;
 355   gMC->Gsvolu("CM12", "BOX", idtmed[1123], pbox, 3);
 356   gMC->Gspos("CM12", 1, "CMO1", px24X, 0, px24Z + px24radius + concreteWidth + pbox[2], 0, "MANY");
 357
 358   // big block of molasse in the opposite side of the PM25. OK
 359   pbox[0] = (AliACORDEConstants::Instance()->Depth()*TMath::Tan(67.5*kDegrad) -
 360 1150)/2;
 361   pbox[1] = AliACORDEConstants::Instance()->Depth()/2;
 362   pbox[2] = (1900 + 2300 + 1150)/2;
 363   gMC->Gsvolu("CM13", "BOX", idtmed[1123], pbox, 3);
 364   gMC->Gspos("CM13", 1, "CMO1", -1150 - pbox[0], 0, pbox[2] - 1900, 0, "MANY");
 365
 366   // big block of molasse behind the PM25. OK
 367   pbox[0] = (AliACORDEConstants::Instance()->Depth()*TMath::Tan(67.5*kDegrad) -
 368 (2100 + 910/2 + 100))/2;
 369   pbox[1] = AliACORDEConstants::Instance()->Depth()/2;
 370   pbox[2] = (1900 + 2300 + 1150)/2;
 371   gMC->Gsvolu("CM14", "BOX", idtmed[1123], pbox, 3);
 372   gMC->Gspos("CM14", 1, "CMO1", pm25X + pm25radius + concreteWidth + pbox[0], 0, pbox[2] - 1900, 0, "MANY");
 373
 374   // big block of molasse behind the PGC2. OK
 375   pbox[0] = AliACORDEConstants::Instance()->Depth()*TMath::Tan(67.5*kDegrad);
 376   pbox[1] = AliACORDEConstants::Instance()->Depth()/2;
 377   pbox[2] = (pbox[0] - (2987.7 + 1900 + 1100/2 + 100))/2;
 378   gMC->Gsvolu("CM15", "BOX", idtmed[1123], pbox, 3);
 379   gMC->Gspos("CM15", 1, "CMO1", 0, 0, -pbox[0] + pbox[2], 0, "MANY");
 380
 381   gMC->Gspos("CMO1",1,"ACORDE",0,AliACORDEConstants::Instance()->Depth()/2,0,0,"MANY");
 382
 383 }
 384
 385 void AliACORDEv0::CreateAcorde()
 386 {
 387   //
 388   // Create geometry for the ACORDE array
 389   // done in two main steps
 390   //  1.- definition of the modules
 391   //  2.- placement of the modules
 392   //
 393   Int_t  idrotm[2499];    // The rotation matrix.
 394   Int_t* idtmed = fIdtmed->GetArray() - 1099;
 395   AliACORDEConstants* constants = AliACORDEConstants::Instance();
 396   Float_t box[3];
 397   Float_t placed_at;
 398   Float_t placed_at2;
 399   Float_t small = 0.05; // to separate slightly some volumes
 400                         // by half a mm so that they do not overlap
 401
 402
 403   // 1.- Definition of a module
 404   // *  ACORDE1 => volume filled with air, representing a module
 405   //               it contains all other volumes defining the module
 406   //               there are 60 copies of it
 407   // *  ACORDE2 => volume defining one scintillator pad
 408   //               there are 2 copies of it per module
 409   // *  ACORDE3-6 => volumes representing the Al walls of box
 410   //               surrounding the plastic
 411   //               3: long wall, 2 copies (front, back)
 412   //               4: end caps, 2 copies (left, right)
 413   //               5: long stripe to model the profile
 414   //                  4 copies (upper front and back, lower)
 415   //               6: short stripe to model the profile
 416   //                  4 copies (upper left, right; lower)
 417
 418   // The full module volume.
 419   // This volume will be ocupied by all the material of the module
 420   // the scintillators, the aluminium frame, etc.
 421   box[0] = constants->ModuleLength()/2;
 422   box[1] = constants->ModuleHeight()/2;
 423   box[2] = constants->ModuleWidth()/2;
 424   gMC->Gsvolu("ACORDE1", "BOX", idtmed[1114], box, 3);
 425
 426   // The scintillators
 427   box[0] = constants->PlasticLength()/2;
 428   box[1] = constants->PlasticHeight()/2;
 429   box[2] = constants->PlasticWidth()/2;
 430   gMC->Gsvolu("ACORDE2", "BOX", idtmed[1112], box, 3);
 431
 432   // it is important to keep this order for easy assignment of
 433   // a volume to a physical module:
 434   placed_at = box[1]+constants->ProfileThickness()
 435     - constants->ModuleHeight()/2+small;
 436   gMC->Gspos("ACORDE2", 1, "ACORDE1", 0, placed_at, 0, 0, "MANY");
 437   placed_at = placed_at + 2.0*box[1]+small;
 438   gMC->Gspos("ACORDE2", 2, "ACORDE1", 0, placed_at, 0, 0, "MANY");
 439
 440
 441   // The metallic frame: long walls of box
 442   // back,front,left,right, defined looking
 443   // from the + z diraction into alice; i.e.
 444   // back ==> z<0, front ==> z>0
 445   // left ==> x<0, right ==> x>0
 446   // up ==> increasing y, down ==> decreasing y
 447   box[0] = constants->ModuleLength()/2;
 448   box[1] = constants->ModuleHeight()/2;
 449   box[2] = constants->ProfileThickness()/2.0;
 450   gMC->Gsvolu("ACORDE3", "BOX", idtmed[1108], box, 3);
 451   // front wall
 452   placed_at = constants->ModuleWidth()/2-constants->ProfileThickness()/2.0;
 453   gMC->Gspos("ACORDE3", 1, "ACORDE1", 0, 0, placed_at, 0, "MANY");
 454   // back wall
 455   gMC->Gspos("ACORDE3", 2, "ACORDE1", 0, 0, -placed_at , 0, "MANY");
 456
 457   // The metallic frame: end caps
 458   box[0] = constants->ProfileThickness()/2.0;
 459   box[1] = constants->ModuleHeight()/2;
 460   box[2] = constants->ModuleWidth()/2;
 461   gMC->Gsvolu("ACORDE4", "BOX", idtmed[1108], box, 3);
 462   // right cap
 463   placed_at = constants->ModuleLength()/2-constants->ProfileThickness()/2.0;
 464   gMC->Gspos("ACORDE4", 1, "ACORDE1", placed_at, 0, 0, 0, "MANY");
 465   // left cap
 466   gMC->Gspos("ACORDE4", 2, "ACORDE1", -placed_at, 0, 0, 0, "MANY");
 467
 468   // The metallic frame: the profile, long stripes
 469   box[0] = constants->ModuleLength()/2.0;
 470   box[1] = constants->ProfileThickness()/2;
 471   box[2] = constants->ProfileWidth()/2;
 472   gMC->Gsvolu("ACORDE5", "BOX", idtmed[1108], box, 3);
 473   // upper front
 474   placed_at = constants->ModuleHeight()/2-box[1];
 475   placed_at2 = constants->ModuleWidth()/2-
 476     constants->ProfileThickness()-box[2];
 477   gMC->Gspos("ACORDE5", 1, "ACORDE1",0,placed_at,placed_at2, 0, "MANY");
 478   // upper back
 479   gMC->Gspos("ACORDE5", 2, "ACORDE1",0,placed_at,-placed_at2, 0, "MANY");
 480   // lower front
 481   gMC->Gspos("ACORDE5", 3, "ACORDE1",0,-placed_at,placed_at2, 0, "MANY");
 482   // lower back
 483   gMC->Gspos("ACORDE5", 4, "ACORDE1",0,-placed_at,-placed_at2, 0, "MANY");
 484
 485   // The metallic frame: the profile, long stripes
 486   box[0] = constants->ProfileWidth()/2.0;
 487   box[1] = constants->ProfileThickness()/2;
 488   box[2] = constants->ModuleWidth()/2-constants->ProfileWidth();
 489   gMC->Gsvolu("ACORDE6", "BOX", idtmed[1108], box, 3);
 490   // upper right
 491   placed_at = constants->ModuleHeight()/2-box[1];
 492   placed_at2 = constants->ModuleLength()/2-
 493     constants->ProfileThickness()-box[0];
 494   gMC->Gspos("ACORDE6", 1, "ACORDE1",placed_at2,placed_at,0, 0, "MANY");
 495   // upper left
 496   gMC->Gspos("ACORDE6", 2, "ACORDE1",-placed_at2,placed_at,0, 0, "MANY");
 497   // lower right
 498   gMC->Gspos("ACORDE6", 3, "ACORDE1",placed_at2,-placed_at,0, 0, "MANY");
 499   // lower left
 500   gMC->Gspos("ACORDE6", 4, "ACORDE1",-placed_at2,-placed_at,0, 0, "MANY");
 501
 502   // End of MODULE definition
 503
 504   ////////////////////////////////////////////////////////////////////
 505   ////////////////////////////////////////////////////////////////////
 506
 507   // 2.- placement of the module
 508   // Now put all of them in the right position in
 509   // master volume ALIC
 510
 511   // rotation matrices (see Geant manual for conventions)
 512   // for columns 4 and 5
 513   AliMatrix(idrotm[231], 90, 45, 90, 135, 0, 0);
 514   // for columns 0 and 1
 515   AliMatrix(idrotm[232], 90, 315, 90, 45, 0, 0);
 516
 517   // place each one of the 6 columns in turn
 518   // for the first and the last column the position
 519   // of the two last modules depends on the value
 520   // of the fITSGeometry variable
 521
 522   // it is important to keep this order because
 523   // the copy number defines the module!
 524
 525   // first column, except first and last  modules
 526   for (Int_t copy = 2; copy < 10; copy++)
 527     gMC->Gspos("ACORDE1",copy,"ALIC",
 528                constants->ModulePositionX(copy-1),
 529                constants->ModulePositionY(copy-1),
 530                constants->ModulePositionZ(copy-1),
 531                idrotm[232], "MANY");
 532   // second column
 533   for (Int_t copy = 11; copy < 21; copy++)
 534     gMC->Gspos("ACORDE1",copy,"ALIC",
 535                constants->ModulePositionX(copy-1),
 536                constants->ModulePositionY(copy-1),
 537                constants->ModulePositionZ(copy-1),
 538                idrotm[232], "MANY");
 539   // third and fourth columns
 540   for (Int_t copy = 21; copy < 41; copy++)
 541     gMC->Gspos("ACORDE1",copy,"ALIC",
 542                constants->ModulePositionX(copy-1),
 543                constants->ModulePositionY(copy-1),
 544                constants->ModulePositionZ(copy-1),
 545                0, "MANY");
 546   // fifth column
 547   for (Int_t copy = 41; copy < 51; copy++)
 548     gMC->Gspos("ACORDE1",copy,"ALIC",
 549                constants->ModulePositionX(copy-1),
 550                constants->ModulePositionY(copy-1),
 551                constants->ModulePositionZ(copy-1),
 552                idrotm[231], "MANY");
 553   // last column, except first and last  modules
 554   for (Int_t copy = 52; copy < 60; copy++)
 555     gMC->Gspos("ACORDE1",copy,"ALIC",
 556                constants->ModulePositionX(copy-1),
 557                constants->ModulePositionY(copy-1),
 558                constants->ModulePositionZ(copy-1),
 559                idrotm[231], "MANY");
 560   // the last four modules
 561   if (GetITSGeometry()) {
 562     gMC->Gspos("ACORDE1",1,"ALIC",
 563                constants->ExtraModulePositionX(),
 564                constants->ExtraModulePositionY(),
 565                constants->ExtraModulePositionZ(0),
 566                0, "MANY");
 567     gMC->Gspos("ACORDE1",10,"ALIC",
 568                constants->ExtraModulePositionX(),
 569                constants->ExtraModulePositionY(),
 570                constants->ExtraModulePositionZ(1),
 571                0, "MANY");
 572     gMC->Gspos("ACORDE1",51,"ALIC",
 573                constants->ExtraModulePositionX(),
 574                constants->ExtraModulePositionY(),
 575                constants->ExtraModulePositionZ(2),
 576                0, "MANY");
 577     gMC->Gspos("ACORDE1",60,"ALIC",
 578                constants->ExtraModulePositionX(),
 579                constants->ExtraModulePositionY(),
 580                constants->ExtraModulePositionZ(3),
 581                0, "MANY");
 582   } else {
 583     gMC->Gspos("ACORDE1",1,"ALIC",
 584                constants->ModulePositionX(0),
 585                constants->ModulePositionY(0),
 586                constants->ModulePositionZ(0),
 587                idrotm[232], "MANY");
 588     gMC->Gspos("ACORDE1",10,"ALIC",
 589                constants->ModulePositionX(9),
 590                constants->ModulePositionY(9),
 591                constants->ModulePositionZ(9),
 592                idrotm[232], "MANY");
 593     gMC->Gspos("ACORDE1",51,"ALIC",
 594                constants->ModulePositionX(50),
 595                constants->ModulePositionY(50),
 596                constants->ModulePositionZ(50),
 597                idrotm[231], "MANY");
 598     gMC->Gspos("ACORDE1",60,"ALIC",
 599                constants->ModulePositionX(59),
 600                constants->ModulePositionY(59),
 601                constants->ModulePositionZ(59),
 602                idrotm[231], "MANY");
 603   } // end if (fITSGeometry)
 604
 605 }
 606 //_____________________________________________________________________________
 607 void AliACORDEv0::DrawDetector() const
 608 {
 609
 610   // not needed anymore
 611
 612 }
 613
 614 //____________________________________________________________________________
 615
 616 void AliACORDEv0::Init()
 617 {
 618   // Initialise L3 magnet after it has been built
 619   Int_t i;
 620   if(AliLog::GetGlobalDebugLevel()>0) {
 621     printf("\n%s: ",ClassName());
 622     for(i=0;i<35;i++) printf("*");
 623     printf(" ACORDEv0_INIT ");
 624     for(i=0;i<35;i++) printf("*");
 625     printf("\n%s: ",ClassName());
 626     // Here the ACORDEv initialisation code (if any!)
 627     for(i=0;i<80;i++) printf("*");
 628     printf("\n");
 629   }
 630  // AliACORDE::Init();
 631 }
 632 //____________________________________________________________________________
 633 void AliACORDEv0::StepManager()
 634 {
 635   //
 636   // Called for every step in the Cosmic Ray Trigger
 637   //
 638
 639
 640   // volume:
 641   //  [0] = module number 1-60 (1==>(0-0), 60 (5-9)
 642   //  [1] = Plastic number: 0 (down) to 1 (up)
 643   static Int_t   vol[2];
 644   //
 645   // hit
 646   // [0] = PID
 647   // [1-3] = x, y, z
 648   // [4] = time
 649   // [5-7] = px, py, pz
 650   // [8] = energy
 651   // [9] = energy loss
 652   // [10] = length of track through plastic
 653   static Float_t hits[11];
 654
 655   // local static variables
 656   static Float_t eloss;
 657   static Float_t step;
 658   // scintillator volume
 659   static Int_t idScint = gMC->VolId("ACORDE2");
 660
 661   // local variables
 662   Int_t copy;
 663   TLorentzVector pos;
 664   TLorentzVector mom;
 665
 666   // only charged tracks
 667   if ( !gMC->TrackCharge() || !gMC->IsTrackAlive() ) return;
 668
 669   // only in sensitive material
 670   if (gMC->CurrentVolID(copy) == idScint) {
 671     step  += gMC->TrackStep();
 672     eloss += gMC->Edep();
 673     // set all hit variables except eloss which is resetted
 674     // set volume variables
 675     if (gMC->IsTrackEntering()) {
 676       eloss = 0.0;
 677       step = 0.0;
 678       gMC->TrackPosition(pos);
 679       gMC->TrackMomentum(mom);
 680       // hit
 681       // [0] = PID
 682       // [1-3] = x, y, z
 683       // [4] = time
 684       // [5-7] = px, py, pz
 685       // [8] = energy
 686       // [9] = energy loss
 687       hits[0]  = (Float_t ) gMC->TrackPid();
 688       hits[1] = pos[0];
 689       hits[2] = pos[1];
 690       hits[3] = pos[2];
 691       hits[4] = gMC->TrackTime();
 692       hits[5] = mom[0];
 693       hits[6] = mom[1];
 694       hits[7] = mom[2];
 695       hits[8] = gMC->Etot();
 696       // volume:
 697       //  [0] = module number 1-60 (1==>(0-0), 60 (5-9)
 698       //  [1] = Plastic number: 0 (down) to 1 (up)
 699       Int_t copyPlastic; // plastic: down=1, up=2
 700       Int_t copyModule; // module: 1-60
 701       gMC->CurrentVolID(copyPlastic);
 702       gMC->CurrentVolOffID(1, copyModule);
 703       // module
 704       vol[0] = copyModule;
 705       // plastic: 0 = down, 1 = up
 706       vol[1] = copyPlastic;
 707     } // end if gMC->IsTrackEntering()
 708
 709     // set hit[9] = total energy loss and book hit
 710     if( gMC->IsTrackExiting() ||
 711         gMC->IsTrackStop() ||
 712         gMC->IsTrackDisappeared()){
 713       hits[9] = eloss;
 714       hits[10] = step;
 715       eloss = 0.0;
 716       step = 0.0;
 717       AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(),vol, hits);
 718     }
 719   } // end if in scintillator
 720
 721 }
 722
 723 //_____________________________________________________________________________
 724 void AliACORDEv0::AddHit(Int_t track, Int_t *vol, Float_t *hits)
 725 {
 726   //
 727   // Add a ACORDE hit
 728   //
 729   TClonesArray &lhits = *fHits;
 730   new(lhits[fNhits++]) AliACORDEhit(fIshunt,track,vol,hits);
 731 }
 732