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