ACORDE/AliACORDEv0.cxx

   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   *
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   9  * without fee, provided that the above copyright notice appears in all   *
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  14  **************************************************************************/
  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 //   Author: Enrique Gamez                                                   //
  27 //                                                                           //
  28 //                  Send comments to:                                        //
  29 //      Arturo Fernandez <afernand@fcfm.buap.mx>                             //
  30 //      Eleazar Cuautle  <ecuautle@nucleares.unam.mx>                        //
  31 //                                                                           //
  32 //      Last update: Nov. 17th. 2009                                         //
  33 //      Mario Rodriguez Cahuantzi <mrodrigu@mail.cern.ch                     //
  34 //      FCFM-BUAP, Puebla, Pue. Mexico                                       //
  35 //                                                                           //
  36 ///////////////////////////////////////////////////////////////////////////////
  37
  38
  39 #include "AliACORDEv0.h"
  40 #include <TClonesArray.h>
  41 #include <TLorentzVector.h>
  42 #include <TVirtualMC.h>
  43 #include <TPDGCode.h>
  44
  45
  46 #include "AliRun.h"
  47 #include "AliConst.h"
  48 #include "AliACORDEhit.h"
  49 #include "AliACORDEConstants.h"
  50 #include "AliMC.h"
  51 #include "AliLog.h"
  52
  53 ClassImp(AliACORDEv0)
  54
  55 //_____________________________________________________________________________
  56 AliACORDEv0::AliACORDEv0()
  57   : AliACORDE()
  58 {
  59   //
  60   // Default constructor
  61   fIshunt = 0;
  62   fHits = 0;
  63   //
  64 }
  65 //_____________________________________________________________________________
  66 AliACORDEv0::AliACORDEv0(const char *name, const char *title)
  67   : AliACORDE(name, title)
  68 {
  69   //
  70   // Standard constructor
  71   //
  72   fIshunt = 1; // All hits are associated with primary particles
  73   fHits =  new TClonesArray("AliACORDEhit",400);
  74   gAlice->GetMCApp()->AddHitList(fHits);
  75 }
  76 //_____________________________________________________________________________
  77 AliACORDEv0::~AliACORDEv0()
  78 {
  79   //
  80   // Default destructor
  81   //
  82 }
  83
  84 //_____________________________________________________________________________
  85 void AliACORDEv0::CreateGeometry()
  86 {
  87   CreateAcorde();
  88   if (GetCreateCavern()) CreateCavern();
  89 }
  90
  91 void AliACORDEv0::CreateCavern()
  92 {
  93   Int_t* idtmed = fIdtmed->GetArray() - 1099 ;
  94     // Create the mother volume, the one which will contain all the material
  95   // above the hall.
  96   Float_t pbox[3];
  97   pbox[0] = AliACORDEConstants::Instance()->Depth()*TMath::Tan(67.5*kDegrad);
  98   //pbox[0] = 12073;
  99   pbox[1] = AliACORDEConstants::Instance()->Depth();
 100   pbox[2] = pbox[0];
 101   gMC->Gsvolu("ACORDE", "BOX", idtmed[1114], pbox, 3);
 102   gMC->Gspos("ACORDE", 1, "ALIC", 0, 0, 0, 0, "ONLY");
 103   CreateShafts();
 104   CreateMolasse();
 105 }
 106
 107 void AliACORDEv0::CreateShafts()
 108
 109 {
 110
 111   //
 112   Int_t  idrotm[2499];    // The rotation matrix.
 113   Int_t* idtmed = fIdtmed->GetArray() - 1099 ;
 114
 115   //
 116   // Acces shafts
 117   //
 118   AliMatrix(idrotm[2001], 0, 0, 90, 0, 90, 90);
 119
 120
 121   // Create a bing cilinder to hold the main structures in the shaft.
 122   //   All the structures relative to the shaft will be put into
 123   // this volume.
 124   //   This shaft is composed by an open tube down in the hall, and
 125   // a cilinder avobe the level of the ceiling.
 126   Float_t ptube[3];
 127   ptube[0] = 0;    // inner radius
 128   ptube[1] = 1250; // outer radius
 129   ptube[2] = 5150/2; // Half lenght in Z
 130   gMC->Gsvolu("CSF1", "TUBE", idtmed[1114], ptube, 3);
 131
 132   Float_t ptubs[5];
 133   // The open section of the PX24
 134   ptubs[0] = 1150; // Inner radius
 135   ptubs[1] = 1250; // Outer radius
 136   ptubs[2] = 1300; // Half length
 137   ptubs[3] = 180 + kRaddeg*TMath::ASin(1070/ptubs[0]); // starting angle
 138   ptubs[4] = 180 -  kRaddeg*TMath::ASin(1070/ptubs[0]);
 139   gMC->Gsvolu("CSF2", "TUBS", idtmed[1116], ptubs, 5);
 140   gMC->Gspos("CSF2", 1, "CSF1", 0, 0, -ptube[2] + ptubs[2], 0, "MANY");
 141
 142   // The other part of the shaft.
 143   ptube[0] = ptubs[0]; // Inner radius
 144   ptube[1] = ptubs[1]; // Outer radius
 145   ptube[2] = 5150/2 - ptubs[2]; // Half lenght
 146   gMC->Gsvolu("CSF3", "TUBE", idtmed[1116], ptube, 3);
 147   gMC->Gspos("CSF3", 1, "CSF1", 0, 0, 5150/2 - ptube[2], 0, "MANY");
 148
 149   Float_t pbox[3];
 150   // Concrete walls along the shaft (next to the elevator.)
 151   pbox[0] = 480/2;  // Half length in X
 152   pbox[1] = 120/2;  // Half length in Y
 153   pbox[2] = 5150/2; // Half length in Z
 154   gMC->Gsvolu("CSW1", "BOX", idtmed[1116], pbox, 3);
 155   gMC->Gspos("CSW1", 1, "CSF1", 820+pbox[0],  150+pbox[1], 0, 0, "MANY");
 156   gMC->Gspos("CSW1", 2, "CSF1", 820+pbox[0], -300-pbox[1], 0, 0, "MANY");
 157
 158   //
 159   pbox[0] = 120/2;  // Half length in X
 160   pbox[1] = 750/2;  // Half length in Y
 161   pbox[2] = 5150/2; // Half length in Z
 162   gMC->Gsvolu("CSW2", "BOX", idtmed[1116], pbox, 3);
 163   gMC->Gspos("CSW2", 1, "CSF1", 820-60, 150+pbox[1], 0, 0, "MANY");
 164
 165   //
 166   pbox[0] = 120/2;  // Half length in X
 167   pbox[1] = 600/2;  // Half lenght in Y
 168   pbox[2] = 5150/2; // Half length in Z
 169   gMC->Gsvolu("CSW3", "BOX", idtmed[1116], pbox, 3);
 170   gMC->Gspos("CSW3", 1, "CSF1", 820-60, -300-pbox[1], 0, 0, "MANY");
 171
 172   // Material below the counting rooms.
 173   pbox[0] = 400/2;
 174   pbox[1] = 2300/2;
 175   pbox[2] = 300/2;
 176   gMC->Gsvolu("CSW4", "BOX", idtmed[1116], pbox, 3);
 177   gMC->Gspos("CSW4",1,"CSF1",2300/2-pbox[0],0,3000-5150/2-pbox[2], 0, "MANY");
 178
 179   // Shielding plug.
 180   pbox[0] = 1400/2;
 181   pbox[1] = 2300/2;
 182   pbox[2] = 170/2;
 183   gMC->Gsvolu("CSW5", "BOX", idtmed[1116], pbox, 3);
 184   gMC->Gspos("CSW5", 1, "CSF1", 0, 0, 3000-5150/2-130, 0, "MANY");
 185
 186   // The end of the support for the shielding plug.
 187   pbox[0] = 170/2;
 188   pbox[1] = 2300/2;
 189   pbox[2] = 300/2;
 190   gMC->Gsvolu("CSW6", "BOX", idtmed[1116], pbox, 3);
 191   gMC->Gspos("CSW6",1,"CSF1",-1400/2-pbox[0],0,3000-5150/2-pbox[2],0,"MANY");
 192
 193   // ...
 194   pbox[0] = 100/2;
 195   pbox[1] = 2300/2;
 196   pbox[2] = 450/2;
 197   gMC->Gsvolu("CSW7", "BOX", idtmed[1116], pbox, 3);
 198   gMC->Gspos("CSW7",1,"CSF1",-1400/2-170-pbox[0],0,3000-5150/2+pbox[2],0,"MANY");
 199
 200   // Material close to the pipe.
 201   pbox[0] = 300/2;
 202   pbox[1] = 2300/2;
 203   pbox[2] = 170/2;
 204   gMC->Gsvolu("CSW8", "BOX", idtmed[1116], pbox, 3);
 205   gMC->Gspos("CSW8",1,"CSF1",-2300/2+pbox[0],0,2500-5150/2,0,"MANY");
 206
 207   // Now put the shaft into the mother volume.
 208   gMC->Gspos("CSF1", 1, "ACORDE", 0, AliACORDEConstants::Instance()->Depth() - 5150/2, 2300, idrotm[2001], "MANY");
 209
 210   // PM25 Access Shaft
 211   ptube[0] = 910/2;
 212   ptube[1] = ptube[0] + 100;
 213   ptube[2] = (5150 - 1166)/2;
 214   gMC->Gsvolu("CSF4", "TUBE", idtmed[1116], ptube, 3);
 215   gMC->Gspos("CSF4", 1, "ACORDE", 2100, AliACORDEConstants::Instance()->Depth()-ptube[2], 0, idrotm[2001], "MANY");
 216
 217   // PGC2 Access Shaft
 218   ptube[0] = 1100/2;
 219   ptube[1] = ptube[0] + 100;
 220   ptube[2] = (5150 - 690)/2;
 221   gMC->Gsvolu("CSF5", "TUBE", idtmed[1116], ptube, 3);
 222   gMC->Gspos("CSF5", 1, "ACORDE", -375, AliACORDEConstants::Instance()->Depth()-ptube[2], -1900 - 2987.7, idrotm[2001], "MANY");
 223
 224 }
 225
 226
 227 void AliACORDEv0::CreateMolasse()
 228
 229 {
 230
 231   //
 232   Int_t  idrotm[2499];    // The rotation matrix.
 233   Int_t* idtmed = fIdtmed->GetArray() - 1099 ;
 234
 235   Float_t px24radius = 2300/2;
 236   Float_t px24X = 0;
 237   //Float_t px24Y = ;
 238   Float_t px24Z = 2300;
 239
 240   Float_t pm25radius = 910/2;
 241   Float_t pm25X = 2100;
 242   //Float_t pm25Y = ;
 243   Float_t pm25Z = 0;
 244
 245   Float_t pgc2radius = 1100/2;
 246   Float_t pgc2X = -375;
 247   //Float_t pgc2Y = ;
 248   Float_t pgc2Z = -(1900 + 2987.7);
 249
 250   Float_t concreteWidth = 100; // Standard width of the hall walls.
 251
 252
 253   // Create a local mother volume.
 254   Float_t pbox[3];
 255   pbox[0] = AliACORDEConstants::Instance()->Depth()*TMath::Tan(67.5*kDegrad);
 256   pbox[1] = AliACORDEConstants::Instance()->Depth()/2;
 257   pbox[2] = pbox[0];
 258   gMC->Gsvolu("CMO1", "BOX", idtmed[1114], pbox, 3);
 259
 260   // Now put the molasse exactly above the hall. OK
 261   // Above the ceiling
 262   Float_t ptubs[5];
 263   ptubs[0] = 1170;
 264   ptubs[1] = 2100 - pm25radius;
 265   ptubs[2] = 1900/2 + px24radius;
 266   ptubs[3] = 0;
 267   ptubs[4] = 180;
 268   gMC->Gsvolu("CMO2", "TUBS", idtmed[1123], ptubs, 5);
 269   gMC->Gspos("CMO2", 1, "CMO1", 0, 500-AliACORDEConstants::Instance()->Depth()/2, ptubs[2]-1900, 0, "MANY");
 270
 271   // Molasse around the RB24/26 Wall. OK
 272   ptubs[0] = 220 + 1600;
 273   ptubs[1] = AliACORDEConstants::Instance()->Depth() - ptubs[0];
 274   ptubs[2] = 2987.7/2 - 1100/4 - concreteWidth/2;
 275   ptubs[3] = 0;
 276   ptubs[4] = 180;
 277   gMC->Gsvolu("CMO3", "TUBS", idtmed[1123], ptubs, 5);
 278   gMC->Gspos("CMO3", 1, "CMO1", 70, 40-AliACORDEConstants::Instance()->Depth()/2, -1900 - ptubs[2], 0, "MANY");
 279
 280   // A big block above the RB24/26 wall. OK
 281   pbox[0] = AliACORDEConstants::Instance()->Depth()*TMath::Tan(67.5*kDegrad);
 282   pbox[1] = (AliACORDEConstants::Instance()->Depth() - 220 - 1600)/2;
 283   pbox[2] = 2987.7/2 - 1100/4 - concreteWidth/2;
 284   gMC->Gsvolu("CMO4", "BOX", idtmed[1123], pbox, 3);
 285   gMC->Gspos("CMO4", 1, "CMO1", 0, AliACORDEConstants::Instance()->Depth()/2 - pbox[1], -1900 - pbox[2], 0, "MANY");
 286   // Small blocks below the volume CMO4 on both sides of the wall RB24/26. OK
 287   pbox[0] = (AliACORDEConstants::Instance()->Depth()*TMath::Tan(67.5*kDegrad) -
 288 ptubs[0])/2;
 289   pbox[1] = AliACORDEConstants::Instance()->Depth()/2 - pbox[1];
 290   gMC->Gsvolu("CM17", "BOX", idtmed[1123], pbox, 3);
 291   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");
 292   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");
 293
 294   // And a big block of molasse above the hall up to the surface. OK
 295   pbox[0] = pm25X - pm25radius;
 296   pbox[1] = (AliACORDEConstants::Instance()->Depth()-500-1170)/2;
 297   pbox[2] = (1900 + 1150)/2;
 298   gMC->Gsvolu("CMO5", "BOX", idtmed[1123], pbox, 3);
 299   gMC->Gspos("CMO5", 1, "CMO1", 0,AliACORDEConstants::Instance()->Depth()/2-pbox[1], pbox[2]-1900, 0, "MANY");
 300   // Small blocks of molasse betwen the blocks CMO2, CMO5 and PM25. Ok
 301   pbox[0] = (pm25X - pm25radius - 1170)/2;
 302   pbox[1] = 1000;
 303   gMC->Gsvolu("CM16", "BOX", idtmed[1123], pbox, 3);
 304   gMC->Gspos("CM16", 1, "CMO1", 1170 + pbox[0], -AliACORDEConstants::Instance()->Depth()/2+pbox[1], pbox[2] - 1900, 0, "MANY");
 305
 306   // Molasse around the shafts.
 307   AliMatrix(idrotm[2003], 0, 0, 90, 0, 90, 90);
 308   // Around the PX24, the open section. OK
 309   ptubs[0] = px24radius + concreteWidth;
 310   ptubs[1] = ptubs[0] + 1000;
 311   ptubs[2] = (2300 - (5150 - AliACORDEConstants::Instance()->Depth()))/2;
 312   ptubs[3] = 180 + kRaddeg*TMath::ASin(1070/ptubs[0]);
 313   ptubs[4] = 180 -  kRaddeg*TMath::ASin(1070/ptubs[0]);
 314   gMC->Gsvolu("CMO6", "TUBS", idtmed[1123], ptubs, 5);
 315   gMC->Gspos("CMO6", 1, "CMO1", px24X, ptubs[2] - AliACORDEConstants::Instance()->Depth()/2, px24Z, idrotm[2003], "MANY");
 316   // Around the PX24, the closed section. OK
 317   Float_t ptube[3];
 318   ptube[0] = px24radius + concreteWidth;
 319   ptube[1] = ptube[0] + 1000;
 320   ptube[2] = (5150 - 2300)/2;
 321   gMC->Gsvolu("CMO7", "TUBE", idtmed[1123], ptube, 3);
 322   gMC->Gspos("CMO7", 1, "CMO1", px24X, AliACORDEConstants::Instance()->Depth()/2 - ptube[2], px24Z, idrotm[2003], "MANY");
 323
 324   // Around PM25. OK
 325   ptube[0] = pm25radius + concreteWidth;
 326   ptube[1] = ptube[0] + 400;
 327   ptube[2] = AliACORDEConstants::Instance()->Depth()/2;
 328   gMC->Gsvolu("CMO8", "TUBE", idtmed[1123], ptube, 3);
 329   gMC->Gspos("CMO8", 1, "CMO1", pm25X, 0, pm25Z, idrotm[2003], "MANY");
 330   // On both sides of the PM25 along the HALL.
 331   pbox[0] = (2100 + pm25radius - 1170)/2;
 332   pbox[1] = AliACORDEConstants::Instance()->Depth()/2;
 333   pbox[2] = (3*px24radius - pm25radius)/2;
 334   gMC->Gsvolu("CM18", "BOX", idtmed[1123], pbox, 3);
 335   gMC->Gspos("CM18", 1, "CMO1", 2100, 0, pbox[2] + pm25radius, 0, "MANY");
 336
 337   pbox[2] = (1900 - pm25radius)/2;
 338   gMC->Gsvolu("CM19", "BOX", idtmed[1123], pbox, 3);
 339   gMC->Gspos("CM19", 1, "CMO1", 2100, 0, -pbox[2] - pm25radius, 0, "MANY");
 340
 341   // Around the PGC2. OK
 342   ptube[0] = pgc2radius + concreteWidth;
 343   ptube[1] = 2987.7 - 740;
 344   ptube[2] = AliACORDEConstants::Instance()->Depth()/2;
 345   gMC->Gsvolu("CMO9", "TUBE", idtmed[1123], ptube, 3);
 346   gMC->Gspos("CMO9", 1, "CMO1", pgc2X, 0, pgc2Z, idrotm[2003], "MANY");
 347
 348   // On both sides of the PGC2.OK
 349   pbox[0] = (AliACORDEConstants::Instance()->Depth()*TMath::Tan(67.5*kDegrad) -
 350 1100 - 375)/2;
 351   pbox[1] = AliACORDEConstants::Instance()->Depth()/2;
 352   pbox[2] = pgc2radius + concreteWidth;
 353   gMC->Gsvolu("CM10", "BOX", idtmed[1123], pbox, 3);
 354   gMC->Gspos("CM10", 1, "CMO1", AliACORDEConstants::Instance()->Depth()*TMath::Tan(67.5*kDegrad) - pbox[0], 0, pgc2Z, 0, "MANY");
 355   gMC->Gspos("CM10", 2, "CMO1", -AliACORDEConstants::Instance()->Depth()*TMath::Tan(67.5*kDegrad) + pbox[0], 0, pgc2Z, 0, "MANY");
 356
 357   // big block of molasse behind the PX24. OK
 358   pbox[0] = AliACORDEConstants::Instance()->Depth()*TMath::Tan(67.5*kDegrad);
 359   pbox[1] = AliACORDEConstants::Instance()->Depth()/2;
 360   pbox[2] = (pbox[0] - (2300 + 1150 + 100))/2;
 361   gMC->Gsvolu("CM12", "BOX", idtmed[1123], pbox, 3);
 362   gMC->Gspos("CM12", 1, "CMO1", px24X, 0, px24Z + px24radius + concreteWidth + pbox[2], 0, "MANY");
 363
 364   // big block of molasse in the opposite side of the PM25. OK
 365   pbox[0] = (AliACORDEConstants::Instance()->Depth()*TMath::Tan(67.5*kDegrad) -
 366 1150)/2;
 367   pbox[1] = AliACORDEConstants::Instance()->Depth()/2;
 368   pbox[2] = (1900 + 2300 + 1150)/2;
 369   gMC->Gsvolu("CM13", "BOX", idtmed[1123], pbox, 3);
 370   gMC->Gspos("CM13", 1, "CMO1", -1150 - pbox[0], 0, pbox[2] - 1900, 0, "MANY");
 371
 372   // big block of molasse behind the PM25. OK
 373   pbox[0] = (AliACORDEConstants::Instance()->Depth()*TMath::Tan(67.5*kDegrad) -
 374 (2100 + 910/2 + 100))/2;
 375   pbox[1] = AliACORDEConstants::Instance()->Depth()/2;
 376   pbox[2] = (1900 + 2300 + 1150)/2;
 377   gMC->Gsvolu("CM14", "BOX", idtmed[1123], pbox, 3);
 378   gMC->Gspos("CM14", 1, "CMO1", pm25X + pm25radius + concreteWidth + pbox[0], 0, pbox[2] - 1900, 0, "MANY");
 379
 380   // big block of molasse behind the PGC2. OK
 381   pbox[0] = AliACORDEConstants::Instance()->Depth()*TMath::Tan(67.5*kDegrad);
 382   pbox[1] = AliACORDEConstants::Instance()->Depth()/2;
 383   pbox[2] = (pbox[0] - (2987.7 + 1900 + 1100/2 + 100))/2;
 384   gMC->Gsvolu("CM15", "BOX", idtmed[1123], pbox, 3);
 385   gMC->Gspos("CM15", 1, "CMO1", 0, 0, -pbox[0] + pbox[2], 0, "MANY");
 386
 387   gMC->Gspos("CMO1",1,"ACORDE",0,AliACORDEConstants::Instance()->Depth()/2,0,0,"MANY");
 388
 389 }
 390
 391 void AliACORDEv0::CreateAcorde()
 392 {
 393   //
 394   // Create geometry for the ACORDE array
 395   // done in two main steps
 396   //  1.- definition of the modules
 397   //  2.- placement of the modules
 398   //
 399   Int_t  idrotm[2499];    // The rotation matrix.
 400   Int_t* idtmed = fIdtmed->GetArray() - 1099;
 401   AliACORDEConstants* constants = AliACORDEConstants::Instance();
 402   Float_t box[3];
 403   Float_t placed_at;
 404   Float_t placed_at2;
 405   Float_t small = 0.05; // to separate slightly some volumes
 406                         // by half a mm so that they do not overlap
 407
 408
 409   // 1.- Definition of a module
 410   // *  ACORDE1 => volume filled with air, representing a module
 411   //               it contains all other volumes defining the module
 412   //               there are 60 copies of it
 413   // *  ACORDE2 => volume defining one scintillator pad
 414   //               there are 2 copies of it per module
 415   // *  ACORDE3-6 => volumes representing the Al walls of box
 416   //               surrounding the plastic
 417   //               3: long wall, 2 copies (front, back)
 418   //               4: end caps, 2 copies (left, right)
 419   //               5: long stripe to model the profile
 420   //                  4 copies (upper front and back, lower)
 421   //               6: short stripe to model the profile
 422   //                  4 copies (upper left, right; lower)
 423
 424   // The full module volume.
 425   // This volume will be ocupied by all the material of the module
 426   // the scintillators, the aluminium frame, etc.
 427   box[0] = constants->ModuleLength()/2;
 428   box[1] = constants->ModuleHeight()/2;
 429   box[2] = constants->ModuleWidth()/2;
 430   gMC->Gsvolu("ACORDE1", "BOX", idtmed[1114], box, 3);
 431
 432   // The scintillators
 433   box[0] = constants->PlasticLength()/2;
 434   box[1] = constants->PlasticHeight()/2;
 435   box[2] = constants->PlasticWidth()/2;
 436   gMC->Gsvolu("ACORDE2", "BOX", idtmed[1112], box, 3);
 437
 438   // it is important to keep this order for easy assignment of
 439   // a volume to a physical module:
 440   placed_at = box[1]+constants->ProfileThickness()
 441     - constants->ModuleHeight()/2+small;
 442   gMC->Gspos("ACORDE2", 1, "ACORDE1", 0, placed_at, 0, 0, "MANY");
 443   placed_at = placed_at + 2.0*box[1]+small;
 444   gMC->Gspos("ACORDE2", 2, "ACORDE1", 0, placed_at, 0, 0, "MANY");
 445
 446
 447   // The metallic frame: long walls of box
 448   // back,front,left,right, defined looking
 449   // from the + z diraction into alice; i.e.
 450   // back ==> z<0, front ==> z>0
 451   // left ==> x<0, right ==> x>0
 452   // up ==> increasing y, down ==> decreasing y
 453   box[0] = constants->ModuleLength()/2;
 454   box[1] = constants->ModuleHeight()/2;
 455   box[2] = constants->ProfileThickness()/2.0;
 456   gMC->Gsvolu("ACORDE3", "BOX", idtmed[1108], box, 3);
 457   // front wall
 458   placed_at = constants->ModuleWidth()/2-constants->ProfileThickness()/2.0;
 459   gMC->Gspos("ACORDE3", 1, "ACORDE1", 0, 0, placed_at, 0, "MANY");
 460   // back wall
 461   gMC->Gspos("ACORDE3", 2, "ACORDE1", 0, 0, -placed_at , 0, "MANY");
 462
 463   // The metallic frame: end caps
 464   box[0] = constants->ProfileThickness()/2.0;
 465   box[1] = constants->ModuleHeight()/2;
 466   box[2] = constants->ModuleWidth()/2;
 467   gMC->Gsvolu("ACORDE4", "BOX", idtmed[1108], box, 3);
 468   // right cap
 469   placed_at = constants->ModuleLength()/2-constants->ProfileThickness()/2.0;
 470   gMC->Gspos("ACORDE4", 1, "ACORDE1", placed_at, 0, 0, 0, "MANY");
 471   // left cap
 472   gMC->Gspos("ACORDE4", 2, "ACORDE1", -placed_at, 0, 0, 0, "MANY");
 473
 474   // The metallic frame: the profile, long stripes
 475   box[0] = constants->ModuleLength()/2.0;
 476   box[1] = constants->ProfileThickness()/2;
 477   box[2] = constants->ProfileWidth()/2;
 478   gMC->Gsvolu("ACORDE5", "BOX", idtmed[1108], box, 3);
 479   // upper front
 480   placed_at = constants->ModuleHeight()/2-box[1];
 481   placed_at2 = constants->ModuleWidth()/2-
 482     constants->ProfileThickness()-box[2];
 483   gMC->Gspos("ACORDE5", 1, "ACORDE1",0,placed_at,placed_at2, 0, "MANY");
 484   // upper back
 485   gMC->Gspos("ACORDE5", 2, "ACORDE1",0,placed_at,-placed_at2, 0, "MANY");
 486   // lower front
 487   gMC->Gspos("ACORDE5", 3, "ACORDE1",0,-placed_at,placed_at2, 0, "MANY");
 488   // lower back
 489   gMC->Gspos("ACORDE5", 4, "ACORDE1",0,-placed_at,-placed_at2, 0, "MANY");
 490
 491   // The metallic frame: the profile, long stripes
 492   box[0] = constants->ProfileWidth()/2.0;
 493   box[1] = constants->ProfileThickness()/2;
 494   box[2] = constants->ModuleWidth()/2-constants->ProfileWidth();
 495   gMC->Gsvolu("ACORDE6", "BOX", idtmed[1108], box, 3);
 496   // upper right
 497   placed_at = constants->ModuleHeight()/2-box[1];
 498   placed_at2 = constants->ModuleLength()/2-
 499     constants->ProfileThickness()-box[0];
 500   gMC->Gspos("ACORDE6", 1, "ACORDE1",placed_at2,placed_at,0, 0, "MANY");
 501   // upper left
 502   gMC->Gspos("ACORDE6", 2, "ACORDE1",-placed_at2,placed_at,0, 0, "MANY");
 503   // lower right
 504   gMC->Gspos("ACORDE6", 3, "ACORDE1",placed_at2,-placed_at,0, 0, "MANY");
 505   // lower left
 506   gMC->Gspos("ACORDE6", 4, "ACORDE1",-placed_at2,-placed_at,0, 0, "MANY");
 507
 508   // End of MODULE definition
 509
 510   ////////////////////////////////////////////////////////////////////
 511   ////////////////////////////////////////////////////////////////////
 512
 513   // 2.- placement of the module
 514   // Now put all of them in the right position in
 515   // master volume ALIC
 516
 517   // rotation matrices (see Geant manual for conventions)
 518   // for columns 4 and 5
 519   AliMatrix(idrotm[231], 90, 45, 90, 135, 0, 0);
 520   // for columns 0 and 1
 521   AliMatrix(idrotm[232], 90, 315, 90, 45, 0, 0);
 522
 523   // place each one of the 6 columns in turn
 524   // for the first and the last column the position
 525   // of the two last modules depends on the value
 526   // of the fITSGeometry variable
 527
 528   // it is important to keep this order because
 529   // the copy number defines the module!
 530
 531   // first column, except first and last  modules
 532   for (Int_t copy = 2; copy < 10; copy++)
 533     gMC->Gspos("ACORDE1",copy,"ALIC",
 534                constants->OldModulePositionX(copy-1),
 535                constants->OldModulePositionY(copy-1),
 536                constants->OldModulePositionZ(copy-1),
 537                idrotm[232], "MANY");
 538   // second column
 539   for (Int_t copy = 11; copy < 21; copy++)
 540     gMC->Gspos("ACORDE1",copy,"ALIC",
 541                constants->OldModulePositionX(copy-1),
 542                constants->OldModulePositionY(copy-1),
 543                constants->OldModulePositionZ(copy-1),
 544                idrotm[232], "MANY");
 545   // third and fourth columns
 546   for (Int_t copy = 21; copy < 41; copy++)
 547     gMC->Gspos("ACORDE1",copy,"ALIC",
 548                constants->OldModulePositionX(copy-1),
 549                constants->OldModulePositionY(copy-1),
 550                constants->OldModulePositionZ(copy-1),
 551                0, "MANY");
 552   // fifth column
 553   for (Int_t copy = 41; copy < 51; copy++)
 554     gMC->Gspos("ACORDE1",copy,"ALIC",
 555                constants->OldModulePositionX(copy-1),
 556                constants->OldModulePositionY(copy-1),
 557                constants->OldModulePositionZ(copy-1),
 558                idrotm[231], "MANY");
 559   // last column, except first and last  modules
 560   for (Int_t copy = 52; copy < 60; copy++)
 561     gMC->Gspos("ACORDE1",copy,"ALIC",
 562                constants->OldModulePositionX(copy-1),
 563                constants->OldModulePositionY(copy-1),
 564                constants->OldModulePositionZ(copy-1),
 565                idrotm[231], "MANY");
 566   // the last four modules
 567   if (Get4CentralModulesGeometry()) {
 568     gMC->Gspos("ACORDE1",1,"ALIC",
 569                constants->OldExtraModulePositionX(),
 570                constants->OldExtraModulePositionY(),
 571                constants->OldExtraModulePositionZ(0),
 572                0, "MANY");
 573     gMC->Gspos("ACORDE1",10,"ALIC",
 574                constants->OldExtraModulePositionX(),
 575                constants->OldExtraModulePositionY(),
 576                constants->OldExtraModulePositionZ(1),
 577                0, "MANY");
 578     gMC->Gspos("ACORDE1",51,"ALIC",
 579                constants->OldExtraModulePositionX(),
 580                constants->OldExtraModulePositionY(),
 581                constants->OldExtraModulePositionZ(2),
 582                0, "MANY");
 583     gMC->Gspos("ACORDE1",60,"ALIC",
 584                constants->OldExtraModulePositionX(),
 585                constants->OldExtraModulePositionY(),
 586                constants->OldExtraModulePositionZ(3),
 587                0, "MANY");
 588   } else {
 589     gMC->Gspos("ACORDE1",1,"ALIC",
 590                constants->OldModulePositionX(0),
 591                constants->OldModulePositionY(0),
 592                constants->OldModulePositionZ(0),
 593                idrotm[232], "MANY");
 594     gMC->Gspos("ACORDE1",10,"ALIC",
 595                constants->OldModulePositionX(9),
 596                constants->OldModulePositionY(9),
 597                constants->OldModulePositionZ(9),
 598                idrotm[232], "MANY");
 599     gMC->Gspos("ACORDE1",51,"ALIC",
 600                constants->OldModulePositionX(50),
 601                constants->OldModulePositionY(50),
 602                constants->OldModulePositionZ(50),
 603                idrotm[231], "MANY");
 604     gMC->Gspos("ACORDE1",60,"ALIC",
 605                constants->OldModulePositionX(59),
 606                constants->OldModulePositionY(59),
 607                constants->OldModulePositionZ(59),
 608                idrotm[231], "MANY");
 609   } // end if (fITSGeometry)
 610
 611 }
 612 //_____________________________________________________________________________
 613 void AliACORDEv0::DrawDetector() const
 614 {
 615
 616   // not needed anymore
 617
 618 }
 619
 620 //____________________________________________________________________________
 621
 622 void AliACORDEv0::Init()
 623 {
 624   // Initialise L3 magnet after it has been built
 625   Int_t i;
 626   if(AliLog::GetGlobalDebugLevel()>0) {
 627     printf("\n%s: ",ClassName());
 628     for(i=0;i<35;i++) printf("*");
 629     printf(" ACORDEv0_INIT ");
 630     for(i=0;i<35;i++) printf("*");
 631     printf("\n%s: ",ClassName());
 632     // Here the ACORDEv initialisation code (if any!)
 633     for(i=0;i<80;i++) printf("*");
 634     printf("\n");
 635   }
 636  // AliACORDE::Init();
 637 }
 638 //____________________________________________________________________________
 639 void AliACORDEv0::StepManager()
 640 {
 641   //
 642   // Called for every step in the Cosmic Ray Trigger
 643   //
 644
 645
 646   // volume:
 647   //  [0] = module number 1-60 (1==>(0-0), 60 (5-9)
 648   //  [1] = Plastic number: 0 (down) to 1 (up)
 649   static Int_t   vol[2];
 650   //
 651   // hit
 652   // [0] = PID
 653   // [1-3] = x, y, z
 654   // [4] = time
 655   // [5-7] = px, py, pz
 656   // [8] = energy
 657   // [9] = energy loss
 658   // [10] = length of track through plastic
 659   static Float_t hits[11];
 660
 661   // local static variables
 662   static Float_t eloss;
 663   static Float_t step;
 664   // scintillator volume
 665   static Int_t idScint = gMC->VolId("ACORDE2");
 666
 667   // local variables
 668   Int_t copy;
 669   TLorentzVector pos;
 670   TLorentzVector mom;
 671
 672   // only charged tracks
 673   if ( !gMC->TrackCharge() || !gMC->IsTrackAlive() ) return;
 674
 675   // only in sensitive material
 676   if (gMC->CurrentVolID(copy) == idScint) {
 677     step  += gMC->TrackStep();
 678     eloss += gMC->Edep();
 679     // set all hit variables except eloss which is resetted
 680     // set volume variables
 681     if (gMC->IsTrackEntering()) {
 682       eloss = 0.0;
 683       step = 0.0;
 684       gMC->TrackPosition(pos);
 685       gMC->TrackMomentum(mom);
 686       // hit
 687       // [0] = PID
 688       // [1-3] = x, y, z
 689       // [4] = time
 690       // [5-7] = px, py, pz
 691       // [8] = energy
 692       // [9] = energy loss
 693       hits[0]  = (Float_t ) gMC->TrackPid();
 694       hits[1] = pos[0];
 695       hits[2] = pos[1];
 696       hits[3] = pos[2];
 697       hits[4] = gMC->TrackTime();
 698       hits[5] = mom[0];
 699       hits[6] = mom[1];
 700       hits[7] = mom[2];
 701       hits[8] = gMC->Etot();
 702       // volume:
 703       //  [0] = module number 1-60 (1==>(0-0), 60 (5-9)
 704       //  [1] = Plastic number: 0 (down) to 1 (up)
 705       Int_t copyPlastic; // plastic: down=1, up=2
 706       Int_t copyModule; // module: 1-60
 707       gMC->CurrentVolID(copyPlastic);
 708       gMC->CurrentVolOffID(1, copyModule);
 709       // module
 710       vol[0] = copyModule;
 711       // plastic: 0 = down, 1 = up
 712       vol[1] = copyPlastic;
 713     } // end if gMC->IsTrackEntering()
 714
 715     // set hit[9] = total energy loss and book hit
 716     if( gMC->IsTrackExiting() ||
 717         gMC->IsTrackStop() ||
 718         gMC->IsTrackDisappeared()){
 719       hits[9] = eloss;
 720       hits[10] = step;
 721       eloss = 0.0;
 722       step = 0.0;
 723       AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(),vol, hits);
 724     }
 725   } // end if in scintillator
 726
 727 }
 728
 729 //_____________________________________________________________________________
 730 void AliACORDEv0::AddHit(Int_t track, Int_t *vol, Float_t *hits)
 731 {
 732   //
 733   // Add a ACORDE hit
 734   //
 735   TClonesArray &lhits = *fHits;
 736   new(lhits[fNhits++]) AliACORDEhit(fIshunt,track,vol,hits);
 737 }
 738