FMD/AliFMDv0.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   *
   8  * documentation strictly for non-commercial purposes is hereby granted   *
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  10  * copies and that both the copyright notice and this permission notice   *
  11  * appear in the supporting documentation. The authors make no claims     *
  12  * about the suitability of this software for any purpose. It is          *
  13  * provided "as is" without express or implied warranty.                  *
  14  **************************************************************************/
  15
  16 /*
  17 $Log$
  18 */
  19
  20 ///////////////////////////////////////////////////////////////////////////////
  21 //                                                                           //
  22 //  Forward Multiplicity Detector version 0                                  //
  23 //                                                                           //
  24 //Begin_Html
  25 /*
  26 <img src="picts/AliFMDv0Class.gif">
  27 </pre>
  28 <br clear=left>
  29 <font size=+2 color=red>
  30 <p>The responsible person for this module is
  31 <a href="mailto:Valeri.Kondratiev@cern.ch">Valeri Kondratiev</a>.
  32 </font>
  33 <pre>
  34 */
  35 //End_Html
  36 //                                                                           //
  37 ///////////////////////////////////////////////////////////////////////////////
  38
  39 #include "AliRun.h"
  40 #include "AliFMDv0.h"
  41 #include "AliMC.h"
  42 #include "stdlib.h"
  43
  44 ClassImp(AliFMDv0)
  45
  46 //_____________________________________________________________________________
  47 AliFMDv0::AliFMDv0()
  48 {
  49   //
  50   // Default constructor for FMD version 0
  51   //
  52 }
  53
  54 //_____________________________________________________________________________
  55 AliFMDv0::AliFMDv0(const char *name, const char *title)
  56   : AliFMD(name,title)
  57 {
  58   //
  59   // Standard constructor for FMD version 0
  60   //
  61   AliModule *start = gAlice->GetModule("START");
  62   if(start) {
  63     Error("ctor","This version of FMD is incompatible with START\n");
  64     exit(1);
  65   }
  66 }
  67
  68 //___________________________________________
  69 void AliFMDv0::CreateGeometry()
  70 {
  71   //
  72   // Creation of the geometry of the FMD version 0
  73   //
  74   //Begin_Html
  75   /*
  76     <img src="picts/AliFMDv0Tree.gif">
  77   */
  78   //End_Html
  79   //Begin_Html
  80   /*
  81     <img src="picts/AliFMDv0.gif">
  82   */
  83   //End_Html
  84
  85
  86   Float_t rout, z;
  87   Float_t par[3], rin;
  88
  89   Int_t *idtmed = fIdtmed->GetArray()-899;
  90
  91   // ********************************************************
  92   //       DEFINE RIGHT DISK#3  OF FMD
  93   // ********************************************************
  94
  95   //       Define parameters
  96
  97   rin  = 4.5;
  98   rout = 10.5;
  99   z    = 85.;
 100   //       Ring #1
 101   par[0] = rin;
 102   par[1] = rout;
 103   par[2] = 1.5;
 104   gMC->Gsvolu("R1R3", "TUBE", idtmed[900], par, 3);
 105   gMC->Gspos("R1R3", 1, "ALIC", 0., 0., z + 1.5, 0, "ONLY");
 106   //       Ring #2
 107   par[0] = rout;
 108   par[1] = rout + .65;
 109   par[2] = 1.5;
 110   gMC->Gsvolu("R2R3", "TUBE", idtmed[901], par, 3);
 111   gMC->Gspos("R2R3", 1, "ALIC", 0., 0., z + 1.5, 0, "ONLY");
 112   //       Ring #3
 113   par[0] = rout + .65;
 114   par[1] = rout + 5.65;
 115   par[2] = .025;
 116   gMC->Gsvolu("R3R3", "TUBE", idtmed[902], par, 3);
 117   gMC->Gspos("R3R3", 1, "ALIC", 0., 0., z + 1.525, 0, "ONLY");
 118   // ***********************************************************
 119   //       DEFINE LEFT DISK#3 OF FMD
 120   // ***********************************************************
 121
 122   //       Define parameters
 123
 124   rin  = 4.5;
 125   rout = 10.5;
 126   z    = -85.;
 127   //       Ring #1
 128   par[0] = rin;
 129   par[1] = rout;
 130   par[2] = 1.5;
 131   gMC->Gsvolu("R1L3", "TUBE", idtmed[900], par, 3);
 132   gMC->Gspos("R1L3", 1, "ALIC", 0., 0., z - 1.5, 0, "ONLY");
 133   //       Ring #2
 134   par[0] = rout;
 135   par[1] = rout + .65;
 136   par[2] = 1.5;
 137   gMC->Gsvolu("R2L3", "TUBE", idtmed[901], par, 3);
 138   gMC->Gspos("R2L3", 1, "ALIC", 0., 0., z - 1.5, 0, "ONLY");
 139   //       Ring #3
 140   par[0] = rout + .65;
 141   par[1] = rout + 5.65;
 142   par[2] = .025;
 143   gMC->Gsvolu("R3L3", "TUBE", idtmed[902], par, 3);
 144   gMC->Gspos("R3L3", 1, "ALIC", 0., 0., z - 1.525, 0, "ONLY");
 145   // ********************************************************
 146   //       DEFINE RIGHT DISK#2  OF FMD
 147   // ********************************************************
 148
 149   //       Define parameters
 150
 151   rin  = 8.;
 152   rout = 14.;
 153   z    = 69.7;
 154   //       Ring #1
 155   par[0] = rin;
 156   par[1] = rout;
 157   par[2] = 1.5;
 158   gMC->Gsvolu("R1R2", "TUBE", idtmed[900], par, 3);
 159   gMC->Gspos("R1R2", 1, "ALIC", 0., 0., z + 1.5, 0, "ONLY");
 160   //       Ring #2
 161   par[0] = rout;
 162   par[1] = rout + .65;
 163   par[2] = 1.5;
 164   gMC->Gsvolu("R2R2", "TUBE", idtmed[901], par, 3);
 165   gMC->Gspos("R2R2", 1, "ALIC", 0., 0., z + 1.5, 0, "ONLY");
 166   //       Ring #3
 167   par[0] = rout + .65;
 168   par[1] = rout + 5.65;
 169   par[2] = .025;
 170   gMC->Gsvolu("R3R2", "TUBE", idtmed[902], par, 3);
 171   gMC->Gspos("R3R2", 1, "ALIC", 0., 0., z + 1.525, 0, "ONLY");
 172   // ***********************************************************
 173   //       DEFINE LEFT DISK#2 OF FMD
 174   // ***********************************************************
 175
 176   //       Define parameters
 177
 178   rin  = 8.;
 179   rout = 14.;
 180   z    = -69.7;
 181   //       Ring #1
 182   par[0] = rin;
 183   par[1] = rout;
 184   par[2] = 1.5;
 185   gMC->Gsvolu("R1L2", "TUBE", idtmed[900], par, 3);
 186   gMC->Gspos("R1L2", 1, "ALIC", 0., 0., z - 1.5, 0, "ONLY");
 187   //       Ring #2
 188   par[0] = rout;
 189   par[1] = rout + .65;
 190   par[2] = 1.5;
 191   gMC->Gsvolu("R2L2", "TUBE", idtmed[901], par, 3);
 192   gMC->Gspos("R2L2", 1, "ALIC", 0., 0., z - 1.5, 0, "ONLY");
 193   //       Ring #3
 194   par[0] = rout + .65;
 195   par[1] = rout + 5.65;
 196   par[2] = .025;
 197   gMC->Gsvolu("R3L2", "TUBE", idtmed[902], par, 3);
 198   gMC->Gspos("R3L2", 1, "ALIC", 0., 0., z - 1.525, 0, "ONLY");
 199   // ********************************************************
 200   //       DEFINE RIGHT DISK#1  OF FMD
 201   // ********************************************************
 202
 203   //       Define parameters
 204
 205   rin  = 8.;
 206   rout = 17.5;
 207   z    = 42.5;
 208   //       Ring #1
 209   par[0] = rin;
 210   par[1] = rout;
 211   par[2] = 1.5;
 212   gMC->Gsvolu("R1R1", "TUBE", idtmed[900], par, 3);
 213   gMC->Gspos("R1R1", 1, "ALIC", 0., 0., z + 1.5, 0, "ONLY");
 214   //       Ring #2
 215   par[0] = rout;
 216   par[1] = rout + .65;
 217   par[2] = 1.5;
 218   gMC->Gsvolu("R2R1", "TUBE", idtmed[901], par, 3);
 219   gMC->Gspos("R2R1", 1, "ALIC", 0., 0., z + 1.5, 0, "ONLY");
 220   //       Ring #3
 221   par[0] = rout + .65;
 222   par[1] = rout + 5.65;
 223   par[2] = .025;
 224   gMC->Gsvolu("R3R1", "TUBE", idtmed[902], par, 3);
 225   gMC->Gspos("R3R1", 1, "ALIC", 0., 0., z + 1.525, 0, "ONLY");
 226   // ***********************************************************
 227   //       DEFINE LEFT DISK#1 OF FMD
 228   // ***********************************************************
 229
 230   //       Define parameters
 231
 232   rin  = 8.;
 233   rout = 17.5;
 234   z    = -42.5;
 235   //       Ring #1
 236   par[0] = rin;
 237   par[1] = rout;
 238   par[2] = 1.5;
 239   gMC->Gsvolu("R1L1", "TUBE", idtmed[900], par, 3);
 240   gMC->Gspos("R1L1", 1, "ALIC", 0., 0., z - 1.5, 0, "ONLY");
 241   //       Ring #2
 242   par[0] = rout;
 243   par[1] = rout + .65;
 244   par[2] = 1.5;
 245   gMC->Gsvolu("R2L1", "TUBE", idtmed[901], par, 3);
 246   gMC->Gspos("R2L1", 1, "ALIC", 0., 0., z - 1.5, 0, "ONLY");
 247   //       Ring #3
 248   par[0] = rout + .65;
 249   par[1] = rout + 5.65;
 250   par[2] = .025;
 251   gMC->Gsvolu("R3L1", "TUBE", idtmed[902], par, 3);
 252   gMC->Gspos("R3L1", 1, "ALIC", 0., 0., z - 1.525, 0, "ONLY");
 253   // ***********************************************************
 254   //       DEFINE LEFT DISK#4 OF FMD
 255   // ***********************************************************
 256
 257   //       Define parameters
 258
 259   rin  = 4.2;
 260   rout = 13.;
 261   z    = -229.5;
 262   //       Ring #1
 263   par[0] = rin;
 264   par[1] = rout;
 265   par[2] = 1.5;
 266   gMC->Gsvolu("R1L4", "TUBE", idtmed[900], par, 3);
 267   gMC->Gspos("R1L4", 1, "ALIC", 0., 0., z - 1.5, 0, "ONLY");
 268   //       Ring #2
 269   par[0] = rout;
 270   par[1] = rout + .65;
 271   par[2] = 1.5;
 272   gMC->Gsvolu("R2L4", "TUBE", idtmed[901], par, 3);
 273   gMC->Gspos("R2L4", 1, "ALIC", 0., 0., z - 1.5, 0, "ONLY");
 274   //       Ring #3
 275   par[0] = rout + .65;
 276   par[1] = rout + 5.65;
 277   par[2] = .025;
 278   gMC->Gsvolu("R3L4", "TUBE", idtmed[902], par, 3);
 279   gMC->Gspos("R3L4", 1, "ALIC", 0., 0., z - 1.525, 0, "ONLY");
 280 }
 281
 282 //_____________________________________________________________________________
 283 void AliFMDv0::DrawModule()
 284 {
 285   //
 286   // Draw a shaded view of the FMD version 0
 287   //
 288
 289   // Set everything unseen
 290   gMC->Gsatt("*", "seen", -1);
 291   //
 292   // Set ALIC mother transparent
 293   gMC->Gsatt("ALIC","SEEN",0);
 294   //
 295   // Set the volumes visible
 296   gMC->Gsatt("R1R3","SEEN",1);
 297   gMC->Gsatt("R2R3","SEEN",1);
 298   gMC->Gsatt("R3R3","SEEN",1);
 299   gMC->Gsatt("R1L3","SEEN",1);
 300   gMC->Gsatt("R2L3","SEEN",1);
 301   gMC->Gsatt("R3L3","SEEN",1);
 302   gMC->Gsatt("R1R2","SEEN",1);
 303   gMC->Gsatt("R2R2","SEEN",1);
 304   gMC->Gsatt("R3R2","SEEN",1);
 305   gMC->Gsatt("R1L2","SEEN",1);
 306   gMC->Gsatt("R2L2","SEEN",1);
 307   gMC->Gsatt("R3L2","SEEN",1);
 308   gMC->Gsatt("R1R1","SEEN",1);
 309   gMC->Gsatt("R2R1","SEEN",1);
 310   gMC->Gsatt("R3R1","SEEN",1);
 311   gMC->Gsatt("R1L1","SEEN",1);
 312   gMC->Gsatt("R2L1","SEEN",1);
 313   gMC->Gsatt("R3L1","SEEN",1);
 314   gMC->Gsatt("R1L4","SEEN",1);
 315   gMC->Gsatt("R2L4","SEEN",1);
 316   gMC->Gsatt("R3L4","SEEN",1);
 317   //
 318   gMC->Gdopt("hide", "on");
 319   gMC->Gdopt("shad", "on");
 320   gMC->Gsatt("*", "fill", 7);
 321   gMC->SetClipBox(".");
 322   gMC->SetClipBox("*", 0, 1000, -1000, 1000, -1000, 1000);
 323   gMC->DefaultRange();
 324   gMC->Gdraw("alic", 40, 30, 0, 6, 9, .08, .08);
 325   gMC->Gdhead(1111, "Forward Multiplicity Detector version 0");
 326   gMC->Gdman(13, 9, "MAN");
 327 }
 328
 329 //_____________________________________________________________________________
 330 void AliFMDv0::CreateMaterials()
 331 {
 332   //
 333   // Create Materials for version 0 of FMD
 334   //
 335
 336   //     Material for ring #1
 337   Float_t ar1[8] = { 55.8,58.7,52.,47.9,16.,28.,207.2,27. };
 338   Float_t zr1[8] = { 26.,28.,24.,22.,8.,14.,82.,13. };
 339   Float_t wr1[8] = { .27,.081,.054,.045,.18,.25,.06,.06 };
 340   //     Material for ring #2
 341   Float_t ar2[3] = { 55.8,27.,16. };
 342   Float_t zr2[3] = { 26.,13.,8. };
 343   Float_t wr2[3] = { .35,.34,.31 };
 344   //     Material for ring #3
 345   Float_t ar3[3] = { 28.,27.,16. };
 346   Float_t zr3[3] = { 14.,13.,8. };
 347   Float_t wr3[3] = { .37,.33,.3 };
 348
 349   Float_t epsil, stmin, deemax, tmaxfd, stemax;
 350
 351   Int_t   ISXFLD = gAlice->Field()->Integ();
 352   Float_t SXMGMX = gAlice->Field()->Max();
 353
 354   //     Ring #1
 355
 356   AliMixture(1, "FMD_R1$", ar1, zr1, 2.69, 8, wr1);
 357
 358   //     Ring #2
 359
 360   AliMixture(2, "FMD_R2$", ar2, zr2, 2.63, 3, wr2);
 361
 362   //     Ring #3
 363
 364   AliMixture(3, "FMD_R3$", ar3, zr3, 3.15, 3, wr3);
 365   // *******************************************************
 366   //     Defines tracking media parameters.
 367   // *******************************************************
 368   epsil  = .001; // Tracking precision, DLS
 369   stemax = -1.;  // Maximum displacement for multiple scattering
 370   tmaxfd = -20.; // Maximum angle due to field deflection
 371   deemax = -.3;  // Maximum fractional energy loss, DLS
 372   stmin  = -.8;
 373   // ********************************************************
 374   AliMedium(1, "FMD_R1_L3        ", 1, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
 375   AliMedium(2, "FMD_R2_L3        ", 2, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
 376   AliMedium(3, "FMD_R3_L3        ", 3, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
 377 }
 378
 379
 380