FMD/AliFMDv0.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 //                                                                 //
  17 // Forward Multiplicity detector based on Silicon version 0        //
  18 //
  19 //Begin Html
  20 /*
  21 <img src="gif/AliFMDv0Class.gif">
  22 */
  23 //End Html
  24 //                                                                  //
  25 //                                                                  //
  26 //////////////////////////////////////////////////////////////////////
  27
  28 #include <TMath.h>
  29 #include <TGeometry.h>
  30 #include <TTUBE.h>
  31 #include <TNode.h>
  32 #include <TLorentzVector.h>
  33 #include "AliFMDv0.h"
  34 #include "AliRun.h"
  35 #include "AliMC.h"
  36 #include <iostream.h>
  37 #include <fstream.h>
  38 #include "AliRndm.h"
  39 #include "AliMagF.h"
  40 #include "AliFMDhit.h"
  41 #include <stdlib.h>
  42
  43 //class TGeant3;
  44 ClassImp(AliFMDv0)
  45
  46 //--------------------------------------------------------------------
  47 AliFMDv0::AliFMDv0(const char *name, const char *title):
  48  AliFMD(name,title)
  49 {
  50   //
  51   // Standart constructor for Forward Multiplicity Detector version 0
  52   //
  53   fIdSens1=0;
  54   fIdSens2=0;
  55   fIdSens3=0;
  56   fIdSens4=0;
  57   fIdSens5=0;
  58 //  setBufferSize(128000);
  59 }
  60 //-------------------------------------------------------------------------
  61
  62 void AliFMDv0::CreateGeometry()
  63 {
  64  //
  65   // Create the geometry of Forward Multiplicity Detector version 0
  66   //Detector consists of 5 volumes:
  67   // 1st covered pseudorapidity interval from 3.58 to 2.03
  68   // and placed on 62.8cm in Z-direction;
  69   // 2nd - from 1.94 to 1.51 and Z=75.2 cm;
  70   // 3d  - the same pseudorapidity interval as the 1st
  71   // but on the other side from the interaction point z=-62.8cm;
  72   // 4th - simmetricaly with the 2nd :
  73   // pseudorapidity from 1.94 to 1.51, Z=-75.2cm
  74   // 5th - from 3.71 to 5.28, Z=-345cm
  75   // Each part has 300mkm Si (sensetive area, detector itself),
  76   // 0.75cm of plastic simulated electronics material,
  77   // Al support ring 2cm thickness and 1cm width placed on
  78   // the outer radius of each Si disk;
  79    //
  80   // begin Html
  81   /*
  82    <img src="gif/AliFMDv0.gif">
  83    */
  84   //
  85
  86   Int_t *idtmed = fIdtmed->GetArray();
  87   Int_t ifmd;
  88   Int_t idrotm[999];
  89   Float_t zfmd,par[3];
  90   char name[5], nameSi[5], nameSector[5], nameRing[5];
  91
  92   Float_t rin[6], rout[6],zpos;
  93
  94   Float_t etain[5]= {3.40, 2.29, 3.68, 2.29, 5.09};
  95   Float_t etaout[6]={2.01, 1.70, 2.28, 1.70, 3.68};
  96   //  Float_t z[6]={64., 85., -64., -85., -270., -630};
  97   Float_t z[6]={62.8, 75.2, -83.4, -75.2, -340.};
  98   Float_t zDet=0.03;
  99   Float_t zElectronic=0.1;
 100   Float_t zSupport=1.;
 101
 102   Float_t zFMD=1.;
 103 //-------------------------------------------------------------------
 104  //  FMD
 105  //------------------------------------------------------------------
 106         cout<<" !!!!!!!!!!!New FMD geometry !!!!!!!!!"<<endl;
 107
 108   AliMatrix(idrotm[901], 90, 0, 90, 90, 180, 0);
 109
 110   //  gMC->Gsvolu("GSI","TUBE", idtmed[1], par, 0);
 111   gMC->Gsvolu("GEL ","TUBE", idtmed[4], par, 0);
 112   gMC->Gsvolu("GSUP","TUBE", idtmed[2], par, 0);
 113
 114   for (ifmd =0; ifmd < 5; ifmd++){
 115
 116     sprintf(name,"FMD%d",ifmd+1);
 117     sprintf(nameSi,"GSI%d",ifmd+1);
 118     sprintf(nameSector,"GSC%d",ifmd+1);
 119     sprintf(nameRing,"GRN%d",ifmd+1);
 120     printf(name,nameSi);
 121
 122     zfmd=TMath::Abs(z[ifmd]);
 123     printf("zfmd %f z[ifmd] %f",zfmd,z[ifmd]);
 124     AliFMD::Eta2Radius(etain[ifmd],zfmd,&rin[ifmd]);
 125     AliFMD::Eta2Radius(etaout[ifmd],zfmd,&rout[ifmd]);
 126
 127     par[0]=rin[ifmd]; // pipe size
 128     par[1]=rout[ifmd];
 129     par[2]=zFMD/2;
 130     gMC->Gsvolu(name,"TUBE", idtmed[3], par, 3);
 131     //    par[2]=zDet/2;
 132     gMC->Gsvolu(nameSi,"TUBE", idtmed[1], par, 0);
 133
 134     printf ("rin %f rout %f ZFMD %f\n",par[0],par[1],z[ifmd]);
 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     cout<<" Si "<<nameSi<<" ifmd "<<ifmd<<" rin "<<par[0]<<" rout "<<par[1]<<
 144       " zDet "<<par[2]<<endl;
 145     //Granularity
 146     cout<<"fSectorsSi1 "<<fSectorsSi1<<
 147       " fRingsSi1 "<<fRingsSi1<<
 148       " fSectorsSi2 "<<fSectorsSi2<<
 149       " fRingsSi2 "<<fRingsSi2<<endl;
 150    if(ifmd==1||ifmd==3)
 151       {
 152         gMC->Gsdvn(nameSector, nameSi , fSectorsSi2, 2);
 153         gMC->Gsdvn(nameRing, nameSector, fRingsSi2, 1);
 154       }
 155     else
 156       {
 157         gMC->Gsdvn(nameSector, nameSi , fSectorsSi1, 2);
 158         gMC->Gsdvn(nameRing, nameSector , fRingsSi1, 1);
 159       }
 160
 161     //Plastic slice for electronics
 162     par[2]=zElectronic/2;
 163     zpos=zpos-zDet/2-par[2];
 164     gMC->Gsposp("GEL ",ifmd+1,name,0,0,zpos,0, "ONLY",par,3);
 165
 166    //Simple Al support
 167    par[1]=rout[ifmd];
 168    par[0]=rout[ifmd]-2;
 169    par[2]=zSupport/2;
 170    zpos=zpos-zElectronic/2-par[2];
 171    //   gMC->Gsposp("GSUP",ifmd+1,name,0,0,zpos,0, "ONLY",par,3);
 172
 173
 174   }
 175
 176 }
 177
 178
 179 //------------------------------------------------------------------------
 180 void AliFMDv0::CreateMaterials()
 181 {
 182  Int_t isxfld   = gAlice->Field()->Integ();
 183  Float_t sxmgmx = gAlice->Field()->Max();
 184
 185  // Plastic CH
 186  Float_t aPlastic[2]={1.01,12.01};
 187  Float_t zPlastic[2]={1,6};
 188  Float_t wPlastic[2]={1,1};
 189  Float_t denPlastic=1.03;
 190    //
 191
 192  //*** Definition Of avaible FMD materials ***
 193  AliMaterial(0, "Si chip$", 28.0855,14.,2.33,9.36,999);
 194  AliMaterial(1, "Al supprt$", 26.980,13.,2.70,8.9,999);
 195  AliMaterial(2, "FMD Air$", 14.61, 7.3, .001205, 30423.,999);
 196  AliMixture( 5, "Plastic$",aPlastic,zPlastic,denPlastic,-2,wPlastic);
 197
 198
 199 //**
 200  AliMedium(1, "Si chip$", 0, 1, isxfld, sxmgmx, 1., .001, 1., .001, .001);
 201  AliMedium(2, "Al support$", 1, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
 202  AliMedium(3, "FMD air$", 2, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
 203  AliMedium(4, "Plastic$", 5, 0,isxfld, sxmgmx,  10., .01, 1., .003, .003);
 204
 205
 206
 207 }
 208 //---------------------------------------------------------------------
 209 void AliFMDv0::DrawDetector()
 210 {
 211 //
 212 // Draw a shaded view of the Forward multiplicity detector version 0
 213 //
 214
 215 AliMC* pMC = AliMC::GetMC();
 216
 217 //Set ALIC mother transparent
 218 pMC->Gsatt("ALIC","SEEN",0);
 219 //
 220 //Set volumes visible
 221 gMC->Gsatt("FMD0","SEEN",1);
 222 gMC->Gsatt("FMD1","SEEN",1);
 223 gMC->Gsatt("FMD2","SEEN",1);
 224 gMC->Gsatt("FMD3","SEEN",1);
 225 gMC->Gsatt("FMD4","SEEN",1);
 226 gMC->Gsatt("FMD5","SEEN",1);
 227
 228 //
 229 gMC->Gdopt("hide","on");
 230 gMC->Gdopt("shad","on");
 231 gMC->SetClipBox(".");
 232 gMC->SetClipBox("*",0,1000,-1000,1000,-1000,1000);
 233 gMC->DefaultRange();
 234 gMC->Gdraw("alic",40,30,0,12,9.5,.2,0.2);
 235 gMC->Gdhead(1111,"Forward multiplicity detector");
 236 gMC->Gdopt("hide","off");
 237 }
 238 //-------------------------------------------------------------------
 239 void AliFMDv0::Init()
 240 {
 241 // Initialises version 0 of the Forward Multiplicity Detector
 242 //
 243 AliMC* gMC=AliMC::GetMC();
 244 AliFMD::Init();
 245 fIdSens1=gMC->VolId("GRN1");
 246 fIdSens2=gMC->VolId("GRN2");
 247 fIdSens3=gMC->VolId("GRN3");
 248 fIdSens4=gMC->VolId("GRN4");
 249 fIdSens5=gMC->VolId("GRN5");
 250 if (fDebug) printf("*** FMD version 0 initialized ***\n");
 251 }
 252
 253 //-------------------------------------------------------------------
 254
 255 void AliFMDv0::StepManager()
 256 {
 257   //
 258   // Called for every step in the Forward Multiplicity Detector
 259   //
 260 }
 261