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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   6  *                                                                        *
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  11  * appear in the supporting documentation. The authors make no claims     *
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  13  * provided "as is" without express or implied warranty.                  *
  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 //                  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 void AliACORDEv0::BuildGeometry()
  82 {
  83
  84   // not needed anymore
  85
  86 }
  87
  88 //_____________________________________________________________________________
  89 void AliACORDEv0::CreateGeometry()
  90 {
  91   CreateAcorde();
  92   if (GetCreateCavern()) CreateCavern();
  93 }
  94
  95 void AliACORDEv0::CreateCavern()
  96 {
  97   Int_t* idtmed = fIdtmed->GetArray() - 1099 ;
  98     // Create the mother volume, the one which will contain all the material
  99   // above the hall.
 100   Float_t pbox[3];
 101   pbox[0] = AliACORDEConstants::Instance()->Depth()*TMath::Tan(67.5*kDegrad);
 102   //pbox[0] = 12073;
 103   pbox[1] = AliACORDEConstants::Instance()->Depth();
 104   pbox[2] = pbox[0];
 105   gMC->Gsvolu("ACORDE", "BOX", idtmed[1114], pbox, 3);
 106   gMC->Gspos("ACORDE", 1, "ALIC", 0, 0, 0, 0, "ONLY");
 107   CreateShafts();
 108   CreateMolasse();
 109 }
 110
 111 void AliACORDEv0::CreateShafts()
 112
 113 {
 114
 115   //
 116   Int_t  idrotm[2499];    // The rotation matrix.
 117   Int_t* idtmed = fIdtmed->GetArray() - 1099 ;
 118
 119   //
 120   // Acces shafts
 121   //
 122   AliMatrix(idrotm[2001], 0, 0, 90, 0, 90, 90);
 123
 124
 125   // Create a bing cilinder to hold the main structures in the shaft.
 126   //   All the structures relative to the shaft will be put into
 127   // this volume.
 128   //   This shaft is composed by an open tube down in the hall, and
 129   // a cilinder avobe the level of the ceiling.
 130   Float_t ptube[3];
 131   ptube[0] = 0;    // inner radius
 132   ptube[1] = 1250; // outer radius
 133   ptube[2] = 5150/2; // Half lenght in Z
 134   gMC->Gsvolu("CSF1", "TUBE", idtmed[1114], ptube, 3);
 135
 136   Float_t ptubs[5];
 137   // The open section of the PX24
 138   ptubs[0] = 1150; // Inner radius
 139   ptubs[1] = 1250; // Outer radius
 140   ptubs[2] = 1300; // Half length
 141   ptubs[3] = 180 + kRaddeg*TMath::ASin(1070/ptubs[0]); // starting angle
 142   ptubs[4] = 180 -  kRaddeg*TMath::ASin(1070/ptubs[0]);
 143   gMC->Gsvolu("CSF2", "TUBS", idtmed[1116], ptubs, 5);
 144   gMC->Gspos("CSF2", 1, "CSF1", 0, 0, -ptube[2] + ptubs[2], 0, "MANY");
 145
 146   // The other part of the shaft.
 147   ptube[0] = ptubs[0]; // Inner radius
 148   ptube[1] = ptubs[1]; // Outer radius
 149   ptube[2] = 5150/2 - ptubs[2]; // Half lenght
 150   gMC->Gsvolu("CSF3", "TUBE", idtmed[1116], ptube, 3);
 151   gMC->Gspos("CSF3", 1, "CSF1", 0, 0, 5150/2 - ptube[2], 0, "MANY");
 152
 153   Float_t pbox[3];
 154   // Concrete walls along the shaft (next to the elevator.)
 155   pbox[0] = 480/2;  // Half length in X
 156   pbox[1] = 120/2;  // Half length in Y
 157   pbox[2] = 5150/2; // Half length in Z
 158   gMC->Gsvolu("CSW1", "BOX", idtmed[1116], pbox, 3);
 159   gMC->Gspos("CSW1", 1, "CSF1", 820+pbox[0],  150+pbox[1], 0, 0, "MANY");
 160   gMC->Gspos("CSW1", 2, "CSF1", 820+pbox[0], -300-pbox[1], 0, 0, "MANY");
 161
 162   //
 163   pbox[0] = 120/2;  // Half length in X
 164   pbox[1] = 750/2;  // Half length in Y
 165   pbox[2] = 5150/2; // Half length in Z
 166   gMC->Gsvolu("CSW2", "BOX", idtmed[1116], pbox, 3);
 167   gMC->Gspos("CSW2", 1, "CSF1", 820-60, 150+pbox[1], 0, 0, "MANY");
 168
 169   //
 170   pbox[0] = 120/2;  // Half length in X
 171   pbox[1] = 600/2;  // Half lenght in Y
 172   pbox[2] = 5150/2; // Half length in Z
 173   gMC->Gsvolu("CSW3", "BOX", idtmed[1116], pbox, 3);
 174   gMC->Gspos("CSW3", 1, "CSF1", 820-60, -300-pbox[1], 0, 0, "MANY");
 175
 176   // Material below the counting rooms.
 177   pbox[0] = 400/2;
 178   pbox[1] = 2300/2;
 179   pbox[2] = 300/2;
 180   gMC->Gsvolu("CSW4", "BOX", idtmed[1116], pbox, 3);
 181   gMC->Gspos("CSW4",1,"CSF1",2300/2-pbox[0],0,3000-5150/2-pbox[2], 0, "MANY");
 182
 183   // Shielding plug.
 184   pbox[0] = 1400/2;
 185   pbox[1] = 2300/2;
 186   pbox[2] = 170/2;
 187   gMC->Gsvolu("CSW5", "BOX", idtmed[1116], pbox, 3);
 188   gMC->Gspos("CSW5", 1, "CSF1", 0, 0, 3000-5150/2-130, 0, "MANY");
 189
 190   // The end of the support for the shielding plug.
 191   pbox[0] = 170/2;
 192   pbox[1] = 2300/2;
 193   pbox[2] = 300/2;
 194   gMC->Gsvolu("CSW6", "BOX", idtmed[1116], pbox, 3);
 195   gMC->Gspos("CSW6",1,"CSF1",-1400/2-pbox[0],0,3000-5150/2-pbox[2],0,"MANY");
 196
 197   // ...
 198   pbox[0] = 100/2;
 199   pbox[1] = 2300/2;
 200   pbox[2] = 450/2;
 201   gMC->Gsvolu("CSW7", "BOX", idtmed[1116], pbox, 3);
 202   gMC->Gspos("CSW7",1,"CSF1",-1400/2-170-pbox[0],0,3000-5150/2+pbox[2],0,"MANY");
 203
 204   // Material close to the pipe.
 205   pbox[0] = 300/2;
 206   pbox[1] = 2300/2;
 207   pbox[2] = 170/2;
 208   gMC->Gsvolu("CSW8", "BOX", idtmed[1116], pbox, 3);
 209   gMC->Gspos("CSW8",1,"CSF1",-2300/2+pbox[0],0,2500-5150/2,0,"MANY");
 210
 211   // Now put the shaft into the mother volume.
 212   gMC->Gspos("CSF1", 1, "ACORDE", 0, AliACORDEConstants::Instance()->Depth() - 5150/2, 2300, idrotm[2001], "MANY");
 213
 214   // PM25 Access Shaft
 215   ptube[0] = 910/2;
 216   ptube[1] = ptube[0] + 100;
 217   ptube[2] = (5150 - 1166)/2;
 218   gMC->Gsvolu("CSF4", "TUBE", idtmed[1116], ptube, 3);
 219   gMC->Gspos("CSF4", 1, "ACORDE", 2100, AliACORDEConstants::Instance()->Depth()-ptube[2], 0, idrotm[2001], "MANY");
 220
 221   // PGC2 Access Shaft
 222   ptube[0] = 1100/2;
 223   ptube[1] = ptube[0] + 100;
 224   ptube[2] = (5150 - 690)/2;
 225   gMC->Gsvolu("CSF5", "TUBE", idtmed[1116], ptube, 3);
 226   gMC->Gspos("CSF5", 1, "ACORDE", -375, AliACORDEConstants::Instance()->Depth()-ptube[2], -1900 - 2987.7, idrotm[2001], "MANY");
 227
 228 }
 229
 230
 231 void AliACORDEv0::CreateMolasse()
 232
 233 {
 234
 235   //
 236   Int_t  idrotm[2499];    // The rotation matrix.
 237   Int_t* idtmed = fIdtmed->GetArray() - 1099 ;
 238
 239   Float_t px24radius = 2300/2;
 240   Float_t px24X = 0;
 241   //Float_t px24Y = ;
 242   Float_t px24Z = 2300;
 243
 244   Float_t pm25radius = 910/2;
 245   Float_t pm25X = 2100;
 246   //Float_t pm25Y = ;
 247   Float_t pm25Z = 0;
 248
 249   Float_t pgc2radius = 1100/2;
 250   Float_t pgc2X = -375;
 251   //Float_t pgc2Y = ;
 252   Float_t pgc2Z = -(1900 + 2987.7);
 253
 254   Float_t concreteWidth = 100; // Standard width of the hall walls.
 255
 256
 257   // Create a local mother volume.
 258   Float_t pbox[3];
 259   pbox[0] = AliACORDEConstants::Instance()->Depth()*TMath::Tan(67.5*kDegrad);
 260   pbox[1] = AliACORDEConstants::Instance()->Depth()/2;
 261   pbox[2] = pbox[0];
 262   gMC->Gsvolu("CMO1", "BOX", idtmed[1114], pbox, 3);
 263
 264   // Now put the molasse exactly above the hall. OK
 265   // Above the ceiling
 266   Float_t ptubs[5];
 267   ptubs[0] = 1170;
 268   ptubs[1] = 2100 - pm25radius;
 269   ptubs[2] = 1900/2 + px24radius;
 270   ptubs[3] = 0;
 271   ptubs[4] = 180;
 272   gMC->Gsvolu("CMO2", "TUBS", idtmed[1123], ptubs, 5);
 273   gMC->Gspos("CMO2", 1, "CMO1", 0, 500-AliACORDEConstants::Instance()->Depth()/2, ptubs[2]-1900, 0, "MANY");
 274
 275   // Molasse around the RB24/26 Wall. OK
 276   ptubs[0] = 220 + 1600;
 277   ptubs[1] = AliACORDEConstants::Instance()->Depth() - ptubs[0];
 278   ptubs[2] = 2987.7/2 - 1100/4 - concreteWidth/2;
 279   ptubs[3] = 0;
 280   ptubs[4] = 180;
 281   gMC->Gsvolu("CMO3", "TUBS", idtmed[1123], ptubs, 5);
 282   gMC->Gspos("CMO3", 1, "CMO1", 70, 40-AliACORDEConstants::Instance()->Depth()/2, -1900 - ptubs[2], 0, "MANY");
 283
 284   // A big block above the RB24/26 wall. OK
 285   pbox[0] = AliACORDEConstants::Instance()->Depth()*TMath::Tan(67.5*kDegrad);
 286   pbox[1] = (AliACORDEConstants::Instance()->Depth() - 220 - 1600)/2;
 287   pbox[2] = 2987.7/2 - 1100/4 - concreteWidth/2;
 288   gMC->Gsvolu("CMO4", "BOX", idtmed[1123], pbox, 3);
 289   gMC->Gspos("CMO4", 1, "CMO1", 0, AliACORDEConstants::Instance()->Depth()/2 - pbox[1], -1900 - pbox[2], 0, "MANY");
 290   // Small blocks below the volume CMO4 on both sides of the wall RB24/26. OK
 291   pbox[0] = (AliACORDEConstants::Instance()->Depth()*TMath::Tan(67.5*kDegrad) -
 292 ptubs[0])/2;
 293   pbox[1] = AliACORDEConstants::Instance()->Depth()/2 - pbox[1];
 294   gMC->Gsvolu("CM17", "BOX", idtmed[1123], pbox, 3);
 295   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");
 296   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");
 297
 298   // And a big block of molasse above the hall up to the surface. OK
 299   pbox[0] = pm25X - pm25radius;
 300   pbox[1] = (AliACORDEConstants::Instance()->Depth()-500-1170)/2;
 301   pbox[2] = (1900 + 1150)/2;
 302   gMC->Gsvolu("CMO5", "BOX", idtmed[1123], pbox, 3);
 303   gMC->Gspos("CMO5", 1, "CMO1", 0,AliACORDEConstants::Instance()->Depth()/2-pbox[1], pbox[2]-1900, 0, "MANY");
 304   // Small blocks of molasse betwen the blocks CMO2, CMO5 and PM25. Ok
 305   pbox[0] = (pm25X - pm25radius - 1170)/2;
 306   pbox[1] = 1000;
 307   gMC->Gsvolu("CM16", "BOX", idtmed[1123], pbox, 3);
 308   gMC->Gspos("CM16", 1, "CMO1", 1170 + pbox[0], -AliACORDEConstants::Instance()->Depth()/2+pbox[1], pbox[2] - 1900, 0, "MANY");
 309
 310   // Molasse around the shafts.
 311   AliMatrix(idrotm[2003], 0, 0, 90, 0, 90, 90);
 312   // Around the PX24, the open section. OK
 313   ptubs[0] = px24radius + concreteWidth;
 314   ptubs[1] = ptubs[0] + 1000;
 315   ptubs[2] = (2300 - (5150 - AliACORDEConstants::Instance()->Depth()))/2;
 316   ptubs[3] = 180 + kRaddeg*TMath::ASin(1070/ptubs[0]);
 317   ptubs[4] = 180 -  kRaddeg*TMath::ASin(1070/ptubs[0]);
 318   gMC->Gsvolu("CMO6", "TUBS", idtmed[1123], ptubs, 5);
 319   gMC->Gspos("CMO6", 1, "CMO1", px24X, ptubs[2] - AliACORDEConstants::Instance()->Depth()/2, px24Z, idrotm[2003], "MANY");
 320   // Around the PX24, the closed section. OK
 321   Float_t ptube[3];
 322   ptube[0] = px24radius + concreteWidth;
 323   ptube[1] = ptube[0] + 1000;
 324   ptube[2] = (5150 - 2300)/2;
 325   gMC->Gsvolu("CMO7", "TUBE", idtmed[1123], ptube, 3);
 326   gMC->Gspos("CMO7", 1, "CMO1", px24X, AliACORDEConstants::Instance()->Depth()/2 - ptube[2], px24Z, idrotm[2003], "MANY");
 327
 328   // Around PM25. OK
 329   ptube[0] = pm25radius + concreteWidth;
 330   ptube[1] = ptube[0] + 400;
 331   ptube[2] = AliACORDEConstants::Instance()->Depth()/2;
 332   gMC->Gsvolu("CMO8", "TUBE", idtmed[1123], ptube, 3);
 333   gMC->Gspos("CMO8", 1, "CMO1", pm25X, 0, pm25Z, idrotm[2003], "MANY");
 334   // On both sides of the PM25 along the HALL.
 335   pbox[0] = (2100 + pm25radius - 1170)/2;
 336   pbox[1] = AliACORDEConstants::Instance()->Depth()/2;
 337   pbox[2] = (3*px24radius - pm25radius)/2;
 338   gMC->Gsvolu("CM18", "BOX", idtmed[1123], pbox, 3);
 339   gMC->Gspos("CM18", 1, "CMO1", 2100, 0, pbox[2] + pm25radius, 0, "MANY");
 340
 341   pbox[2] = (1900 - pm25radius)/2;
 342   gMC->Gsvolu("CM19", "BOX", idtmed[1123], pbox, 3);
 343   gMC->Gspos("CM19", 1, "CMO1", 2100, 0, -pbox[2] - pm25radius, 0, "MANY");
 344
 345   // Around the PGC2. OK
 346   ptube[0] = pgc2radius + concreteWidth;
 347   ptube[1] = 2987.7 - 740;
 348   ptube[2] = AliACORDEConstants::Instance()->Depth()/2;
 349   gMC->Gsvolu("CMO9", "TUBE", idtmed[1123], ptube, 3);
 350   gMC->Gspos("CMO9", 1, "CMO1", pgc2X, 0, pgc2Z, idrotm[2003], "MANY");
 351
 352   // On both sides of the PGC2.OK
 353   pbox[0] = (AliACORDEConstants::Instance()->Depth()*TMath::Tan(67.5*kDegrad) -
 354 1100 - 375)/2;
 355   pbox[1] = AliACORDEConstants::Instance()->Depth()/2;
 356   pbox[2] = pgc2radius + concreteWidth;
 357   gMC->Gsvolu("CM10", "BOX", idtmed[1123], pbox, 3);
 358   gMC->Gspos("CM10", 1, "CMO1", AliACORDEConstants::Instance()->Depth()*TMath::Tan(67.5*kDegrad) - pbox[0], 0, pgc2Z, 0, "MANY");
 359   gMC->Gspos("CM10", 2, "CMO1", -AliACORDEConstants::Instance()->Depth()*TMath::Tan(67.5*kDegrad) + pbox[0], 0, pgc2Z, 0, "MANY");
 360
 361   // big block of molasse behind the PX24. OK
 362   pbox[0] = AliACORDEConstants::Instance()->Depth()*TMath::Tan(67.5*kDegrad);
 363   pbox[1] = AliACORDEConstants::Instance()->Depth()/2;
 364   pbox[2] = (pbox[0] - (2300 + 1150 + 100))/2;
 365   gMC->Gsvolu("CM12", "BOX", idtmed[1123], pbox, 3);
 366   gMC->Gspos("CM12", 1, "CMO1", px24X, 0, px24Z + px24radius + concreteWidth + pbox[2], 0, "MANY");
 367
 368   // big block of molasse in the opposite side of the PM25. OK
 369   pbox[0] = (AliACORDEConstants::Instance()->Depth()*TMath::Tan(67.5*kDegrad) -
 370 1150)/2;
 371   pbox[1] = AliACORDEConstants::Instance()->Depth()/2;
 372   pbox[2] = (1900 + 2300 + 1150)/2;
 373   gMC->Gsvolu("CM13", "BOX", idtmed[1123], pbox, 3);
 374   gMC->Gspos("CM13", 1, "CMO1", -1150 - pbox[0], 0, pbox[2] - 1900, 0, "MANY");
 375
 376   // big block of molasse behind the PM25. OK
 377   pbox[0] = (AliACORDEConstants::Instance()->Depth()*TMath::Tan(67.5*kDegrad) -
 378 (2100 + 910/2 + 100))/2;
 379   pbox[1] = AliACORDEConstants::Instance()->Depth()/2;
 380   pbox[2] = (1900 + 2300 + 1150)/2;
 381   gMC->Gsvolu("CM14", "BOX", idtmed[1123], pbox, 3);
 382   gMC->Gspos("CM14", 1, "CMO1", pm25X + pm25radius + concreteWidth + pbox[0], 0, pbox[2] - 1900, 0, "MANY");
 383
 384   // big block of molasse behind the PGC2. OK
 385   pbox[0] = AliACORDEConstants::Instance()->Depth()*TMath::Tan(67.5*kDegrad);
 386   pbox[1] = AliACORDEConstants::Instance()->Depth()/2;
 387   pbox[2] = (pbox[0] - (2987.7 + 1900 + 1100/2 + 100))/2;
 388   gMC->Gsvolu("CM15", "BOX", idtmed[1123], pbox, 3);
 389   gMC->Gspos("CM15", 1, "CMO1", 0, 0, -pbox[0] + pbox[2], 0, "MANY");
 390
 391   gMC->Gspos("CMO1",1,"ACORDE",0,AliACORDEConstants::Instance()->Depth()/2,0,0,"MANY");
 392
 393 }
 394
 395 void AliACORDEv0::CreateAcorde()
 396 {
 397   //
 398   // Create geometry for the ACORDE array
 399   // done in two main steps
 400   //  1.- definition of the modules
 401   //  2.- placement of the modules
 402   //
 403   Int_t  idrotm[2499];    // The rotation matrix.
 404   Int_t* idtmed = fIdtmed->GetArray() - 1099;
 405   AliACORDEConstants* constants = AliACORDEConstants::Instance();
 406   Float_t box[3];
 407   Float_t placed_at;
 408   Float_t placed_at2;
 409   Float_t small = 0.05; // to separate slightly some volumes
 410                         // by half a mm so that they do not overlap
 411
 412
 413   // 1.- Definition of a module
 414   // *  ACORDE1 => volume filled with air, representing a module
 415   //               it contains all other volumes defining the module
 416   //               there are 60 copies of it
 417   // *  ACORDE2 => volume defining one scintillator pad
 418   //               there are 2 copies of it per module
 419   // *  ACORDE3-6 => volumes representing the Al walls of box
 420   //               surrounding the plastic
 421   //               3: long wall, 2 copies (front, back)
 422   //               4: end caps, 2 copies (left, right)
 423   //               5: long stripe to model the profile
 424   //                  4 copies (upper front and back, lower)
 425   //               6: short stripe to model the profile
 426   //                  4 copies (upper left, right; lower)
 427
 428   // The full module volume.
 429   // This volume will be ocupied by all the material of the module
 430   // the scintillators, the aluminium frame, etc.
 431   box[0] = constants->ModuleLength()/2;
 432   box[1] = constants->ModuleHeight()/2;
 433   box[2] = constants->ModuleWidth()/2;
 434   gMC->Gsvolu("ACORDE1", "BOX", idtmed[1114], box, 3);
 435
 436   // The scintillators
 437   box[0] = constants->PlasticLength()/2;
 438   box[1] = constants->PlasticHeight()/2;
 439   box[2] = constants->PlasticWidth()/2;
 440   gMC->Gsvolu("ACORDE2", "BOX", idtmed[1112], box, 3);
 441
 442   // it is important to keep this order for easy assignment of
 443   // a volume to a physical module:
 444   placed_at = box[1]+constants->ProfileThickness()
 445     - constants->ModuleHeight()/2+small;
 446   gMC->Gspos("ACORDE2", 1, "ACORDE1", 0, placed_at, 0, 0, "MANY");
 447   placed_at = placed_at + 2.0*box[1]+small;
 448   gMC->Gspos("ACORDE2", 2, "ACORDE1", 0, placed_at, 0, 0, "MANY");
 449
 450
 451   // The metallic frame: long walls of box
 452   // back,front,left,right, defined looking
 453   // from the + z diraction into alice; i.e.
 454   // back ==> z<0, front ==> z>0
 455   // left ==> x<0, right ==> x>0
 456   // up ==> increasing y, down ==> decreasing y
 457   box[0] = constants->ModuleLength()/2;
 458   box[1] = constants->ModuleHeight()/2;
 459   box[2] = constants->ProfileThickness()/2.0;
 460   gMC->Gsvolu("ACORDE3", "BOX", idtmed[1108], box, 3);
 461   // front wall
 462   placed_at = constants->ModuleWidth()/2-constants->ProfileThickness()/2.0;
 463   gMC->Gspos("ACORDE3", 1, "ACORDE1", 0, 0, placed_at, 0, "MANY");
 464   // back wall
 465   gMC->Gspos("ACORDE3", 2, "ACORDE1", 0, 0, -placed_at , 0, "MANY");
 466
 467   // The metallic frame: end caps
 468   box[0] = constants->ProfileThickness()/2.0;
 469   box[1] = constants->ModuleHeight()/2;
 470   box[2] = constants->ModuleWidth()/2;
 471   gMC->Gsvolu("ACORDE4", "BOX", idtmed[1108], box, 3);
 472   // right cap
 473   placed_at = constants->ModuleLength()/2-constants->ProfileThickness()/2.0;
 474   gMC->Gspos("ACORDE4", 1, "ACORDE1", placed_at, 0, 0, 0, "MANY");
 475   // left cap
 476   gMC->Gspos("ACORDE4", 2, "ACORDE1", -placed_at, 0, 0, 0, "MANY");
 477
 478   // The metallic frame: the profile, long stripes
 479   box[0] = constants->ModuleLength()/2.0;
 480   box[1] = constants->ProfileThickness()/2;
 481   box[2] = constants->ProfileWidth()/2;
 482   gMC->Gsvolu("ACORDE5", "BOX", idtmed[1108], box, 3);
 483   // upper front
 484   placed_at = constants->ModuleHeight()/2-box[1];
 485   placed_at2 = constants->ModuleWidth()/2-
 486     constants->ProfileThickness()-box[2];
 487   gMC->Gspos("ACORDE5", 1, "ACORDE1",0,placed_at,placed_at2, 0, "MANY");
 488   // upper back
 489   gMC->Gspos("ACORDE5", 2, "ACORDE1",0,placed_at,-placed_at2, 0, "MANY");
 490   // lower front
 491   gMC->Gspos("ACORDE5", 3, "ACORDE1",0,-placed_at,placed_at2, 0, "MANY");
 492   // lower back
 493   gMC->Gspos("ACORDE5", 4, "ACORDE1",0,-placed_at,-placed_at2, 0, "MANY");
 494
 495   // The metallic frame: the profile, long stripes
 496   box[0] = constants->ProfileWidth()/2.0;
 497   box[1] = constants->ProfileThickness()/2;
 498   box[2] = constants->ModuleWidth()/2-constants->ProfileWidth();
 499   gMC->Gsvolu("ACORDE6", "BOX", idtmed[1108], box, 3);
 500   // upper right
 501   placed_at = constants->ModuleHeight()/2-box[1];
 502   placed_at2 = constants->ModuleLength()/2-
 503     constants->ProfileThickness()-box[0];
 504   gMC->Gspos("ACORDE6", 1, "ACORDE1",placed_at2,placed_at,0, 0, "MANY");
 505   // upper left
 506   gMC->Gspos("ACORDE6", 2, "ACORDE1",-placed_at2,placed_at,0, 0, "MANY");
 507   // lower right
 508   gMC->Gspos("ACORDE6", 3, "ACORDE1",placed_at2,-placed_at,0, 0, "MANY");
 509   // lower left
 510   gMC->Gspos("ACORDE6", 4, "ACORDE1",-placed_at2,-placed_at,0, 0, "MANY");
 511
 512   // End of MODULE definition
 513
 514   ////////////////////////////////////////////////////////////////////
 515   ////////////////////////////////////////////////////////////////////
 516
 517   // 2.- placement of the module
 518   // Now put all of them in the right position in
 519   // master volume ALIC
 520
 521   // rotation matrices (see Geant manual for conventions)
 522   // for columns 4 and 5
 523   AliMatrix(idrotm[231], 90, 45, 90, 135, 0, 0);
 524   // for columns 0 and 1
 525   AliMatrix(idrotm[232], 90, 315, 90, 45, 0, 0);
 526
 527   // place each one of the 6 columns in turn
 528   // for the first and the last column the position
 529   // of the two last modules depends on the value
 530   // of the fITSGeometry variable
 531
 532   // it is important to keep this order because
 533   // the copy number defines the module!
 534
 535   // first column, except first and last  modules
 536   for (Int_t copy = 2; copy < 10; 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   // second column
 543   for (Int_t copy = 11; copy < 21; copy++)
 544     gMC->Gspos("ACORDE1",copy,"ALIC",
 545                constants->ModulePositionX(copy-1),
 546                constants->ModulePositionY(copy-1),
 547                constants->ModulePositionZ(copy-1),
 548                idrotm[232], "MANY");
 549   // third and fourth columns
 550   for (Int_t copy = 21; copy < 41; copy++)
 551     gMC->Gspos("ACORDE1",copy,"ALIC",
 552                constants->ModulePositionX(copy-1),
 553                constants->ModulePositionY(copy-1),
 554                constants->ModulePositionZ(copy-1),
 555                0, "MANY");
 556   // fifth column
 557   for (Int_t copy = 41; copy < 51; 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   // last column, except first and last  modules
 564   for (Int_t copy = 52; copy < 60; copy++)
 565     gMC->Gspos("ACORDE1",copy,"ALIC",
 566                constants->ModulePositionX(copy-1),
 567                constants->ModulePositionY(copy-1),
 568                constants->ModulePositionZ(copy-1),
 569                idrotm[231], "MANY");
 570   // the last four modules
 571   if (GetITSGeometry()) {
 572     gMC->Gspos("ACORDE1",1,"ALIC",
 573                constants->ExtraModulePositionX(),
 574                constants->ExtraModulePositionY(),
 575                constants->ExtraModulePositionZ(0),
 576                0, "MANY");
 577     gMC->Gspos("ACORDE1",10,"ALIC",
 578                constants->ExtraModulePositionX(),
 579                constants->ExtraModulePositionY(),
 580                constants->ExtraModulePositionZ(1),
 581                0, "MANY");
 582     gMC->Gspos("ACORDE1",51,"ALIC",
 583                constants->ExtraModulePositionX(),
 584                constants->ExtraModulePositionY(),
 585                constants->ExtraModulePositionZ(2),
 586                0, "MANY");
 587     gMC->Gspos("ACORDE1",60,"ALIC",
 588                constants->ExtraModulePositionX(),
 589                constants->ExtraModulePositionY(),
 590                constants->ExtraModulePositionZ(3),
 591                0, "MANY");
 592   } else {
 593     gMC->Gspos("ACORDE1",1,"ALIC",
 594                constants->ModulePositionX(0),
 595                constants->ModulePositionY(0),
 596                constants->ModulePositionZ(0),
 597                idrotm[232], "MANY");
 598     gMC->Gspos("ACORDE1",10,"ALIC",
 599                constants->ModulePositionX(9),
 600                constants->ModulePositionY(9),
 601                constants->ModulePositionZ(9),
 602                idrotm[232], "MANY");
 603     gMC->Gspos("ACORDE1",51,"ALIC",
 604                constants->ModulePositionX(50),
 605                constants->ModulePositionY(50),
 606                constants->ModulePositionZ(50),
 607                idrotm[231], "MANY");
 608     gMC->Gspos("ACORDE1",60,"ALIC",
 609                constants->ModulePositionX(59),
 610                constants->ModulePositionY(59),
 611                constants->ModulePositionZ(59),
 612                idrotm[231], "MANY");
 613   } // end if (fITSGeometry)
 614
 615 }
 616 //_____________________________________________________________________________
 617 void AliACORDEv0::DrawDetector() const
 618 {
 619
 620   // not needed anymore
 621
 622 }
 623
 624 //____________________________________________________________________________
 625
 626 void AliACORDEv0::Init()
 627 {
 628   // Initialise L3 magnet after it has been built
 629   Int_t i;
 630   if(AliLog::GetGlobalDebugLevel()>0) {
 631     printf("\n%s: ",ClassName());
 632     for(i=0;i<35;i++) printf("*");
 633     printf(" ACORDEv0_INIT ");
 634     for(i=0;i<35;i++) printf("*");
 635     printf("\n%s: ",ClassName());
 636     // Here the ACORDEv initialisation code (if any!)
 637     for(i=0;i<80;i++) printf("*");
 638     printf("\n");
 639   }
 640  // AliACORDE::Init();
 641 }
 642 //____________________________________________________________________________
 643 void AliACORDEv0::StepManager()
 644 {
 645   //
 646   // Called for every step in the Cosmic Ray Trigger
 647   //
 648
 649
 650   // volume:
 651   //  [0] = module number 1-60 (1==>(0-0), 60 (5-9)
 652   //  [1] = Plastic number: 0 (down) to 1 (up)
 653   static Int_t   vol[2];
 654   //
 655   // hit
 656   // [0] = PID
 657   // [1-3] = x, y, z
 658   // [4] = time
 659   // [5-7] = px, py, pz
 660   // [8] = energy
 661   // [9] = energy loss
 662   // [10] = length of track through plastic
 663   static Float_t hits[11];
 664
 665   // local static variables
 666   static Float_t eloss;
 667   static Float_t step;
 668   // scintillator volume
 669   static Int_t idScint = gMC->VolId("ACORDE2");
 670
 671   // local variables
 672   Int_t copy;
 673   TLorentzVector pos;
 674   TLorentzVector mom;
 675
 676   // only charged tracks
 677   if ( !gMC->TrackCharge() || !gMC->IsTrackAlive() ) return;
 678
 679   // only in sensitive material
 680   if (gMC->CurrentVolID(copy) == idScint) {
 681     step  += gMC->TrackStep();
 682     eloss += gMC->Edep();
 683     // set all hit variables except eloss which is resetted
 684     // set volume variables
 685     if (gMC->IsTrackEntering()) {
 686       eloss = 0.0;
 687       step = 0.0;
 688       gMC->TrackPosition(pos);
 689       gMC->TrackMomentum(mom);
 690       // hit
 691       // [0] = PID
 692       // [1-3] = x, y, z
 693       // [4] = time
 694       // [5-7] = px, py, pz
 695       // [8] = energy
 696       // [9] = energy loss
 697       hits[0]  = (Float_t ) gMC->TrackPid();
 698       hits[1] = pos[0];
 699       hits[2] = pos[1];
 700       hits[3] = pos[2];
 701       hits[4] = gMC->TrackTime();
 702       hits[5] = mom[0];
 703       hits[6] = mom[1];
 704       hits[7] = mom[2];
 705       hits[8] = gMC->Etot();
 706       // volume:
 707       //  [0] = module number 1-60 (1==>(0-0), 60 (5-9)
 708       //  [1] = Plastic number: 0 (down) to 1 (up)
 709       Int_t copyPlastic; // plastic: down=1, up=2
 710       Int_t copyModule; // module: 1-60
 711       gMC->CurrentVolID(copyPlastic);
 712       gMC->CurrentVolOffID(1, copyModule);
 713       // module
 714       vol[0] = copyModule;
 715       // plastic: 0 = down, 1 = up
 716       vol[1] = copyPlastic;
 717     } // end if gMC->IsTrackEntering()
 718
 719     // set hit[9] = total energy loss and book hit
 720     if( gMC->IsTrackExiting() ||
 721         gMC->IsTrackStop() ||
 722         gMC->IsTrackDisappeared()){
 723       hits[9] = eloss;
 724       hits[10] = step;
 725       eloss = 0.0;
 726       step = 0.0;
 727       AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(),vol, hits);
 728     }
 729   } // end if in scintillator
 730
 731 }
 732
 733 //_____________________________________________________________________________
 734 void AliACORDEv0::AddHit(Int_t track, Int_t *vol, Float_t *hits)
 735 {
 736   //
 737   // Add a ACORDE hit
 738   //
 739   TClonesArray &lhits = *fHits;
 740   new(lhits[fNhits++]) AliACORDEhit(fIshunt,track,vol,hits);
 741 }
 742