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   *
   9  * without fee, provided that the above copyright notice appears in all   *
  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 /* $Id$ */
  17
  18  /////////////////////////////////////////////////////////////////////
  19 //                                                                 //
  20 // Forward Multiplicity detector based on Silicon version 0        //
  21 //
  22 //Begin Html
  23 /*
  24 <img src="gif/AliFMDv0Class.gif">
  25 */
  26 //End Html
  27 //                                                                  //
  28 //                                                                  //
  29 //////////////////////////////////////////////////////////////////////
  30
  31 #include <Riostream.h>
  32 #include <stdlib.h>
  33
  34 #include <TGeometry.h>
  35 #include <TLorentzVector.h>
  36 #include <TMath.h>
  37 #include <TNode.h>
  38 #include <TTUBE.h>
  39 #include <TLorentzVector.h>
  40
  41 #include "AliFMDv0.h"
  42 #include "AliMagF.h"
  43 #include "AliRndm.h"
  44 #include "AliRun.h"
  45 #include "AliFMDhit.h"
  46
  47 ClassImp(AliFMDv0)
  48
  49 //--------------------------------------------------------------------
  50 AliFMDv0::AliFMDv0(const char *name, const char *title):
  51  AliFMD(name,title)
  52 {
  53   //
  54   // Standart constructor for Forward Multiplicity Detector version 0
  55   //
  56   fIdSens1=0;
  57   fIdSens2=0;
  58   fIdSens3=0;
  59   fIdSens4=0;
  60   fIdSens5=0;
  61 //  setBufferSize(128000);
  62 }
  63 //-------------------------------------------------------------------------
  64
  65 void AliFMDv0::CreateGeometry()
  66 {
  67  //
  68   // Create the geometry of Forward Multiplicity Detector version 0
  69   //Detector consists of 5 volumes:
  70   // 1st covered pseudorapidity interval from 3.58 to 2.03
  71   // and placed on 62.8cm in Z-direction;
  72   // 2nd - from 1.94 to 1.51 and Z=75.2 cm;
  73   // 3d  - the same pseudorapidity interval as the 1st
  74   // but on the other side from the interaction point z=-62.8cm;
  75   // 4th - simmetricaly with the 2nd :
  76   // pseudorapidity from 1.94 to 1.51, Z=-75.2cm
  77   // 5th - from 3.71 to 5.28, Z=-345cm
  78   // Each part has 300mkm Si (sensetive area, detector itself),
  79   // 0.75cm of plastic simulated electronics material,
  80   // Al support ring 2cm thickness and 1cm width placed on
  81   // the outer radius of each Si disk;
  82    //
  83   // begin Html
  84   /*
  85    <img src="gif/AliFMDv0.gif">
  86    */
  87   //
  88
  89   Int_t *idtmed = fIdtmed->GetArray();
  90   Int_t ifmd;
  91   Int_t idrotm[999];
  92   Float_t zfmd,par[3];
  93   char name[5], nameSi[5], nameSector[5], nameRing[5];
  94
  95   Float_t rin[6], rout[6],zpos;
  96
  97   Float_t etain[5]= {3.40, 2.29, 3.68, 2.29, 5.09};
  98   Float_t etaout[6]={2.01, 1.70, 2.28, 1.70, 3.68};
  99   //  Float_t z[6]={64., 85., -64., -85., -270., -630};
 100   Float_t z[6]={62.8, 75.2, -83.4, -75.2, -340.};
 101   Float_t zDet=0.03;
 102   Float_t zElectronic=0.1;
 103   Float_t zSupport=1.;
 104
 105   Float_t zFMD=1.;
 106 //-------------------------------------------------------------------
 107  //  FMD
 108  //------------------------------------------------------------------
 109         cout<<" !!!!!!!!!!!New FMD geometry !!!!!!!!!"<<endl;
 110
 111   AliMatrix(idrotm[901], 90, 0, 90, 90, 180, 0);
 112
 113   //  gMC->Gsvolu("GSI","TUBE", idtmed[1], par, 0);
 114   gMC->Gsvolu("GEL ","TUBE", idtmed[4], par, 0);
 115   gMC->Gsvolu("GSUP","TUBE", idtmed[2], par, 0);
 116
 117   for (ifmd =0; ifmd < 5; ifmd++){
 118
 119     sprintf(name,"FMD%d",ifmd+1);
 120     sprintf(nameSi,"GSI%d",ifmd+1);
 121     sprintf(nameSector,"GSC%d",ifmd+1);
 122     sprintf(nameRing,"GRN%d",ifmd+1);
 123     printf(name,nameSi);
 124
 125     zfmd=TMath::Abs(z[ifmd]);
 126     AliFMD::Eta2Radius(etain[ifmd],zfmd,&rin[ifmd]);
 127     AliFMD::Eta2Radius(etaout[ifmd],zfmd,&rout[ifmd]);
 128
 129     par[0]=rin[ifmd]; // pipe size
 130     par[1]=rout[ifmd];
 131     par[2]=zFMD/2;
 132     gMC->Gsvolu(name,"TUBE", idtmed[3], par, 3);
 133     gMC->Gsvolu(nameSi,"TUBE", idtmed[1], par, 0);
 134
 135      if (z[ifmd] < 0){
 136       gMC->Gspos(name,1,"ALIC",0,0,z[ifmd],0, "ONLY");}
 137     else {
 138       gMC->Gspos(name,1,"ALIC",0,0,z[ifmd],idrotm[901], "ONLY");}
 139   //Silicon detector
 140     par[2]=zDet/2;
 141     zpos=zFMD/2 -par[2];
 142     gMC->Gsposp(nameSi,ifmd+1,name,0,0,zpos,0, "ONLY",par,3);
 143      //Granularity
 144     if(ifmd==1||ifmd==3)
 145       {
 146         gMC->Gsdvn(nameSector, nameSi , fSectorsSi2, 2);
 147         gMC->Gsdvn(nameRing, nameSector, fRingsSi2, 1);
 148       }
 149     else
 150       {
 151         gMC->Gsdvn(nameSector, nameSi , fSectorsSi1, 2);
 152         gMC->Gsdvn(nameRing, nameSector , fRingsSi1, 1);
 153       }
 154
 155     //Plastic slice for electronics
 156     par[2]=zElectronic/2;
 157     zpos=zpos-zDet/2-par[2];
 158     gMC->Gsposp("GEL ",ifmd+1,name,0,0,zpos,0, "ONLY",par,3);
 159
 160    //Simple Al support
 161    par[1]=rout[ifmd];
 162    par[0]=rout[ifmd]-2;
 163    par[2]=zSupport/2;
 164    zpos=zpos-zElectronic/2-par[2];
 165    //   gMC->Gsposp("GSUP",ifmd+1,name,0,0,zpos,0, "ONLY",par,3);
 166
 167
 168   }
 169
 170 }
 171
 172
 173 //------------------------------------------------------------------------
 174 void AliFMDv0::CreateMaterials()
 175 {
 176  Int_t isxfld   = gAlice->Field()->Integ();
 177  Float_t sxmgmx = gAlice->Field()->Max();
 178
 179  // Plastic CH
 180  Float_t aPlastic[2]={1.01,12.01};
 181  Float_t zPlastic[2]={1,6};
 182  Float_t wPlastic[2]={1,1};
 183  Float_t denPlastic=1.03;
 184    //
 185
 186  //*** Definition Of avaible FMD materials ***
 187  AliMaterial(0, "Si chip$", 28.0855,14.,2.33,9.36,999);
 188  AliMaterial(1, "Al supprt$", 26.980,13.,2.70,8.9,999);
 189  AliMaterial(2, "FMD Air$", 14.61, 7.3, .001205, 30423.,999);
 190  AliMixture( 5, "Plastic$",aPlastic,zPlastic,denPlastic,-2,wPlastic);
 191
 192
 193 //**
 194  AliMedium(1, "Si chip$", 0, 1, isxfld, sxmgmx, 1., .001, 1., .001, .001);
 195  AliMedium(2, "Al support$", 1, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
 196  AliMedium(3, "FMD air$", 2, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
 197  AliMedium(4, "Plastic$", 5, 0,isxfld, sxmgmx,  10., .01, 1., .003, .003);
 198
 199
 200
 201 }
 202 //---------------------------------------------------------------------
 203 void AliFMDv0::DrawDetector()
 204 {
 205 //
 206 // Draw a shaded view of the Forward multiplicity detector version 0
 207 //
 208
 209
 210 //Set ALIC mother transparent
 211 gMC->Gsatt("ALIC","SEEN",0);
 212 //
 213 //Set volumes visible
 214 gMC->Gsatt("FMD0","SEEN",1);
 215 gMC->Gsatt("FMD1","SEEN",1);
 216 gMC->Gsatt("FMD2","SEEN",1);
 217 gMC->Gsatt("FMD3","SEEN",1);
 218 gMC->Gsatt("FMD4","SEEN",1);
 219 gMC->Gsatt("FMD5","SEEN",1);
 220
 221 //
 222 gMC->Gdopt("hide","on");
 223 gMC->Gdopt("shad","on");
 224 gMC->SetClipBox(".");
 225 gMC->SetClipBox("*",0,1000,-1000,1000,-1000,1000);
 226 gMC->DefaultRange();
 227 gMC->Gdraw("alic",40,30,0,12,9.5,.2,0.2);
 228 gMC->Gdhead(1111,"Forward multiplicity detector");
 229 gMC->Gdopt("hide","off");
 230 }
 231 //-------------------------------------------------------------------
 232 void AliFMDv0::Init()
 233 {
 234 // Initialises version 0 of the Forward Multiplicity Detector
 235 //
 236 AliFMD::Init();
 237 fIdSens1=gMC->VolId("GRN1");
 238 fIdSens2=gMC->VolId("GRN2");
 239 fIdSens3=gMC->VolId("GRN3");
 240 fIdSens4=gMC->VolId("GRN4");
 241 fIdSens5=gMC->VolId("GRN5");
 242 if (fDebug) printf("*** FMD version 0 initialized ***\n");
 243 }
 244
 245 //-------------------------------------------------------------------
 246
 247 void AliFMDv0::StepManager()
 248 {
 249   //
 250   // Called for every step in the Forward Multiplicity Detector
 251   //
 252 }
 253