FMD/AliFMDv2.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 // 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 #include <TMath.h>
  28 #include <TGeometry.h>
  29 #include <TTUBE.h>
  30 #include <TFile.h>
  31 #include <TTree.h>
  32 #include <TNode.h>
  33 #include <TClonesArray.h>
  34 #include <TLorentzVector.h>
  35 #include <TDirectory.h>
  36 #include "AliFMDv2.h"
  37 #include "AliFMDv0.h"
  38 #include "AliRun.h"
  39 #include <Riostream.h>
  40 #include "AliMagF.h"
  41 #include "AliFMDhit.h"
  42 #include "AliFMDdigit.h"
  43 #include <stdlib.h>
  44
  45 ClassImp(AliFMDv2)
  46
  47 //--------------------------------------------------------------------
  48 AliFMDv2::AliFMDv2(const char *name, const char *title):
  49  AliFMD(name,title)
  50 {
  51   //
  52   // Standart constructor for Forward Multiplicity Detector version 0
  53   //
  54   fIdSens1=0;
  55   fIdSens2=0;
  56   fIdSens3=0;
  57   fIdSens4=0;
  58   fIdSens5=0;
  59 //  setBufferSize(128000);
  60 }
  61 //-------------------------------------------------------------------------
  62 void AliFMDv2::CreateGeometry()
  63 {
  64  //
  65   // Create the geometry of Forward Multiplicity Detector version 2
  66   //
  67   //Detector consists of 5 volumes:
  68   // 1st covered pseudorapidity interval from 3.4 to 2.0
  69   // and placed on 65cm in Z-direction;
  70   // 2nd - from 2.2 to 1.7 and Z=85 cm;
  71   // 3d  - the same pseudorapidity interval as the 1st
  72   // but on the other side from the interaction point z=-65cm;
  73   // 4th - simmetricaly with the 2nd :
  74   // pseudorapidity from 2.0 to 1.6, Z=-85cm
  75   // 5th - from 3.6 to 4.7, Z=-270cm
  76   // Each part has 300mkm Si (sensetive area, detector itself),
  77   // 0.75cm of plastic simulated electronics material,
  78   // Al support ring 2cm thickness and 1cm width placed on
  79   // the outer radius of each Si disk;
  80   //
  81   // begin Html
  82   /*
  83    <img src="gif/AliFMDv0.gif">
  84    */
  85   //
  86
  87   Int_t *idtmed = fIdtmed->GetArray();
  88
  89   Int_t ifmd;
  90   Int_t idrotm[999];
  91   Float_t zFMD,par[3],ppcon[15];
  92   Float_t z[5]={62.8, 75.2, -83.4, -75.2, -340.};
  93   Float_t NylonTube[3]={0.2,0.6,0.45};
  94   Float_t zPCB=0.12; Float_t zHoneyComb=0.5;
  95   Float_t zSi=0.03;
  96
  97 //-------------------------------------------------------------------
  98  //  FMD
  99  //------------------------------------------------------------------
 100   //  cout<<" !!!!!!!!!!!New FMD geometry !!!!!!!!!"<<endl;
 101
 102
 103   char nameFMD[5], nameSi[5], nameSector[5], nameRing[5];
 104   Char_t nameHoney[5], nameHoneyIn[5], nameHoneyOut[5];
 105   Char_t namePCB[5], nameCopper[5], nameChips[5], nameG10[5];
 106   Char_t nameLPCB[5], nameLCopper[5], nameLChips[5], nameGL10[5];;
 107   Float_t rin[5]={4.2,15.4,4.2,15.4,4.2};
 108   Float_t rout[5]={17.4,28.4,17.4,28.4,17.4};
 109   Float_t RinHoneyComb[5] ={ 5.15,16.4,  5.15,16.4,  5.15};
 110   Float_t RoutHoneyComb[5]={20.63,34.92,22.3, 32.02,20.63};
 111   Float_t zInside;
 112   Float_t zCooper=0.01; Float_t zChips=0.01;
 113   Float_t yNylonTube[5]={10,20,10,20,10};
 114
 115
 116   AliMatrix(idrotm[901], 90, 0, 90, 90, 180, 0);
 117
 118
 119   // Nylon tubes
 120    gMC->Gsvolu("GNYL","TUBE", idtmed[1], NylonTube, 3);  //support nylon tube
 121    Float_t wideSupport=zSi+3*zPCB+2*NylonTube[2]+zHoneyComb;
 122    //   cout<<" wideSupport "<<wideSupport<<endl;
 123
 124   for (ifmd=0; ifmd<5; ifmd++)
 125     {
 126       sprintf(nameFMD,"FMD%d",ifmd+1);
 127       ppcon[0]=0;
 128       ppcon[1]=360;
 129       ppcon[2]=4;
 130
 131       ppcon[3]=-wideSupport;
 132       ppcon[4]=rin[ifmd]+0.1;
 133       ppcon[5]=rout[ifmd]+0.1;
 134
 135       ppcon[6]=ppcon[3]+2*zSi+2*zPCB+2*NylonTube[2];
 136       ppcon[7]=rin[ifmd]+0.1;
 137       ppcon[8]=rout[ifmd]+0.1;
 138
 139       ppcon[9]=ppcon[6];
 140       ppcon[10]=RinHoneyComb[ifmd]+0.1;
 141       ppcon[11]=RoutHoneyComb[ifmd]+0.1;
 142
 143       ppcon[12]=ppcon[9]+2*zHoneyComb+zPCB;
 144       ppcon[13]=RinHoneyComb[ifmd]+0.1;
 145       ppcon[14]=RoutHoneyComb[ifmd]+0.1;
 146       zFMD=z[ifmd]+wideSupport/2.;
 147       gMC->Gsvolu(nameFMD,"PCON",idtmed[0],ppcon,15);
 148       if (z[ifmd] >0){
 149         gMC->Gspos(nameFMD,1,"ALIC",0,0,z[ifmd],0, "ONLY");}
 150       else {
 151         gMC->Gspos(nameFMD,1,"ALIC",0,0,z[ifmd],idrotm[901], "ONLY");}
 152      //silicon
 153       sprintf(nameSi,"GSI%d",ifmd+1);
 154       sprintf(nameSector,"GSC%d",ifmd+1);
 155       sprintf(nameRing,"GRN%d",ifmd+1);
 156
 157       //honeycomb support
 158       sprintf(nameHoney,"GSU%d",ifmd+1);
 159       gMC->Gsvolu(nameHoney,"TUBE", idtmed[0], par, 0);  //honeycomb
 160       sprintf(nameHoneyIn,"GHI%d",ifmd+1);
 161       gMC->Gsvolu(nameHoneyIn,"TUBE", idtmed[7], par, 0);  //honey comb inside
 162       sprintf(nameHoneyOut,"GHO%d",ifmd+1);
 163       gMC->Gsvolu(nameHoneyOut,"TUBE", idtmed[6], par, 0);  //honey comb skin
 164       //PCB
 165       sprintf(namePCB,"GPC%d",ifmd+1);
 166       gMC->Gsvolu(namePCB,"TUBE", idtmed[0], par, 0); //PCB
 167       sprintf(nameCopper,"GCO%d",ifmd+1);
 168       gMC->Gsvolu(nameCopper,"TUBE", idtmed[3], par, 0);  // Cooper
 169       sprintf(nameChips,"GCH%d",ifmd+1);
 170       gMC->Gsvolu(nameChips,"TUBE", idtmed[5], par, 0); // Si chips
 171       sprintf(nameG10,"G10%d",ifmd+1);
 172       gMC->Gsvolu(nameG10,"TUBE", idtmed[2], par, 0);  //G10 plate
 173       //last PCB
 174       sprintf(nameLPCB,"GPL%d",ifmd+1);
 175       gMC->Gsvolu(nameLPCB,"TUBE", idtmed[0], par, 0); //PCB
 176       sprintf(nameLCopper,"GCL%d",ifmd+1);
 177       gMC->Gsvolu(nameLCopper,"TUBE", idtmed[3], par, 0);  // Cooper
 178       sprintf(nameLChips,"GHL%d",ifmd+1);
 179       gMC->Gsvolu(nameLChips,"TUBE", idtmed[5], par, 0); // Si chips
 180       sprintf(nameGL10,"G1L%d",ifmd+1);
 181       gMC->Gsvolu(nameGL10,"TUBE", idtmed[2], par, 0); // Last G10
 182       par[0]=rin[ifmd]; // pipe size
 183       par[1]=rout[ifmd];
 184       par[2]=zSi/2;
 185       gMC->Gsvolu(nameSi,"TUBE", idtmed[4], par, 3);
 186       zInside=ppcon[3]+par[2];
 187        gMC->Gspos(nameSi,ifmd+1,nameFMD,0,0,zInside,0, "ONLY");
 188       //PCB 1
 189       zInside += par[2]+zPCB/2;
 190       par[2]=zPCB/2;
 191       gMC->Gsposp(namePCB,1,nameFMD,0,0,zInside,0, "ONLY",par,3);
 192       zInside += zPCB;
 193       gMC->Gsposp(namePCB,2,nameFMD,0,0,zInside,0, "ONLY",par,3);
 194       Float_t NulonTubeBegin=zInside+2.5*zPCB;
 195       par[2]=zPCB/2-0.02;
 196       Float_t zInPCB = -zPCB/2+par[2];
 197       gMC->Gsposp(nameG10,1,namePCB,0,0,zInPCB,0, "ONLY",par,3);
 198       zInPCB+=par[2]+zCooper/2 ;
 199       par[2]=zCooper/2;
 200       gMC->Gsposp(nameCopper,1,namePCB,0,0,zInPCB,0, "ONLY",par,3);
 201       zInPCB += zCooper/2 + zChips/2;
 202       par[2]=zChips/2;
 203       gMC->Gsposp(nameChips,1,namePCB,0,0,zInPCB,0, "ONLY",par,3);
 204       //HoneyComb
 205       zHoneyComb=0.8;
 206       par[0] = RinHoneyComb[ifmd];
 207       par[1] = RoutHoneyComb[ifmd];
 208       par[2] = zHoneyComb/2;
 209       zInside += 2*NylonTube[2]+par[2];
 210       gMC->Gsposp(nameHoney,1,nameFMD,0,0,zInside,0, "ONLY",par,3);
 211       par[2]=0.1/2;
 212       Float_t zHoney=-zHoneyComb/2+par[2];
 213       gMC->Gsposp(nameHoneyOut,1,nameHoney,0,0,zHoney,0,
 214                   "ONLY",par,3); //shkurki
 215       zHoney=zHoneyComb/2-par[2];
 216       gMC->Gsposp(nameHoneyOut,2,nameHoney,0,0,zHoney,0, "ONLY",par,3);
 217       par[2]=(zHoneyComb-2.*0.1)/2; //soty vnutri
 218       gMC->Gsposp(nameHoneyIn,1,nameHoney,0,0,0,0, "ONLY",par,3);
 219
 220       gMC->Gspos("GNYL",1,nameFMD,0,yNylonTube[ifmd],
 221                  NulonTubeBegin+NylonTube[2]/2.,0, "ONLY");
 222       gMC->Gspos("GNYL",2,nameFMD,0,-yNylonTube[ifmd],
 223                  NulonTubeBegin+NylonTube[2]/2.,0, "ONLY");
 224
 225       //last PCB
 226       par[0]=RoutHoneyComb[ifmd]-9;
 227       par[1]=RoutHoneyComb[ifmd];
 228       par[2]=zPCB/2;
 229       zInside += zHoneyComb/2+par[2];
 230       gMC->Gsposp(nameLPCB,1,nameFMD,0,0,zInside,0, "ONLY",par,3);
 231
 232        par[2]=zPCB/2-0.02;
 233        zInPCB = -zPCB/2+par[2];
 234        gMC->Gsposp(nameGL10,1,nameLPCB,0,0,zInPCB,0, "ONLY",par,3);
 235        zInPCB+=par[2]+zCooper/2 ;
 236        par[2]=zCooper/2;
 237        gMC->Gsposp(nameLCopper,1,nameLPCB,0,0,zInPCB,0, "ONLY",par,3);
 238        zInPCB += zCooper/2 + zChips/2;
 239        par[2]=zChips/2;
 240        gMC->Gsposp(nameLChips,1,nameLPCB,0,0,zInPCB,0, "ONLY",par,3);
 241
 242
 243      //Granularity
 244     fSectorsSi1=20;
 245     fRingsSi1=256*3;
 246     // fRingsSi1=3; // for drawing only
 247     fSectorsSi2=40;
 248      fRingsSi2=128*3;
 249      //  fRingsSi2=3; //for  drawing onl
 250     if(ifmd==1||ifmd==3)
 251       {
 252         gMC->Gsdvn(nameSector, nameSi , fSectorsSi2, 2);
 253         gMC->Gsdvn(nameRing, nameSector, fRingsSi2, 1);
 254       }
 255     else
 256       {
 257         gMC->Gsdvn(nameSector, nameSi , fSectorsSi1, 2);
 258         gMC->Gsdvn(nameRing, nameSector , fRingsSi1, 1);
 259       }
 260
 261     }
 262 }
 263
 264
 265 //------------------------------------------------------------------------
 266
 267
 268 void AliFMDv2::CreateMaterials()
 269 {
 270  Int_t isxfld   = gAlice->Field()->Integ();
 271  Float_t sxmgmx = gAlice->Field()->Max();
 272
 273  // Plastic CH
 274  Float_t aPlastic[2]={1.01,12.01};
 275  Float_t zPlastic[2]={1,6};
 276  Float_t wPlastic[2]={1,1};
 277  Float_t denPlastic=1.03;
 278  //     60% SiO2 , 40% G10FR4
 279  // PC board
 280  Float_t apcb[3]  = { 28.0855,15.9994,17.749 };
 281  Float_t zpcb[3]  = { 14.,8.,8.875 };
 282  Float_t wpcb[3]  = { .28,.32,.4 };
 283  Float_t denspcb  = 1.8;
 284    //
 285
 286  //*** Definition Of avaible FMD materials ***
 287  AliMaterial(0, "FMD Air$", 14.61, 7.3, .001205, 30423.,999);
 288  AliMixture(1, "Plastic$",aPlastic,zPlastic,denPlastic,-2,wPlastic);
 289  AliMixture(2, "SSD PCB$",   apcb, zpcb, denspcb, 3, wpcb);
 290  AliMaterial(3, "SSD Copper$", 63.546, 29., 8.96, 1.43, 999.);
 291  AliMaterial(4, "SSD Si$",      28.0855, 14., 2.33, 9.36, 999.);
 292  AliMaterial(5, "SSD Si chip$", 28.0855, 14., 2.33, 9.36, 999.);
 293  AliMaterial(6, "SSD C$",       12.011,   6., 2.265,18.8, 999.);
 294  AliMaterial(7, "SSD Kapton$", 12.011, 6., 0.01, 31.27, 999.);//honeycomb
 295   AliMaterial(8, "SSD G10FR4$", 17.749, 8.875, 1.8, 21.822, 999.);
 296
 297
 298 //**
 299  AliMedium(0, "FMD air$", 0, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
 300  AliMedium(1, "Plastic$", 1, 0,isxfld, sxmgmx,  10., .01, 1., .003, .003);
 301  AliMedium(2, "SSD PCB$", 2, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
 302  AliMedium(3, "SSD Copper$", 3, 0,isxfld, sxmgmx,  10., .01, 1., .003, .003);
 303  AliMedium(4, "SSD Si$", 4, 1, isxfld, sxmgmx, 1., .001, 1., .001, .001);
 304  AliMedium(5, "SSD Si chip$", 5, 0,isxfld, sxmgmx,  10., .01, 1., .003, .003);
 305  AliMedium(6, "SSD C$", 6, 0,isxfld, sxmgmx,  10., .01, 1., .003, .003);
 306  AliMedium(7, "SSD Kapton$", 7, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
 307  AliMedium(8, "SSD G10FR4$", 8, 0,isxfld, sxmgmx,  10., .01, 1., .003, .003);
 308
 309
 310
 311 }
 312
 313 //---------------------------------------------------------------------
 314 void AliFMDv2::DrawDetector()
 315 {
 316 //
 317 // Draw a shaded view of the Forward multiplicity detector version 0
 318 //
 319
 320
 321 //Set ALIC mother transparent
 322 gMC->Gsatt("ALIC","SEEN",0);
 323 //
 324 //Set volumes visible
 325 gMC->Gsatt("FMD1","SEEN",1);
 326 gMC->Gsatt("FMD2","SEEN",1);
 327 gMC->Gsatt("FMD3","SEEN",1);
 328 gMC->Gsatt("FMD4","SEEN",1);
 329 gMC->Gsatt("FMD5","SEEN",1);
 330
 331 //
 332 gMC->Gdopt("hide","on");
 333 gMC->Gdopt("shad","on");
 334 gMC->SetClipBox(".");
 335 gMC->SetClipBox("*",0,1000,-1000,1000,-1000,1000);
 336 gMC->DefaultRange();
 337 gMC->Gdraw("alic",40,30,0,12,9.5,.2,0.2);
 338 gMC->Gdhead(1111,"Forward multiplicity detector");
 339 gMC->Gdopt("hide","off");
 340 }
 341 //-------------------------------------------------------------------
 342 void AliFMDv2::Init()
 343 {
 344 // Initialises version 0 of the Forward Multiplicity Detector
 345 //
 346 AliFMD::Init();
 347 fIdSens1=gMC->VolId("GRN1");
 348 fIdSens2=gMC->VolId("GRN2");
 349 fIdSens3=gMC->VolId("GRN3");
 350 fIdSens4=gMC->VolId("GRN4");
 351 fIdSens5=gMC->VolId("GRN5");
 352 printf("*** FMD version 2 initialized ***\n");
 353 }
 354
 355 //-------------------------------------------------------------------
 356
 357 void AliFMDv2::StepManager()
 358 {
 359   //
 360   // Called for every step in the Forward Multiplicity Detector
 361   //
 362   Int_t id,copy,copy1,copy2;
 363   static Float_t hits[9];
 364   static Int_t vol[3];
 365   static Float_t de;
 366   TLorentzVector pos;
 367   TLorentzVector mom;
 368
 369
 370   TClonesArray &lhits = *fHits;
 371   if(!gMC->IsTrackAlive()) return; // particle has disappeared
 372
 373   Float_t charge = gMC->TrackCharge();
 374   if(TMath::Abs(charge)<=0.) return; //take only charged particles
 375
 376   //  printf(" in StepManeger \n");
 377   id=gMC->CurrentVolID(copy);
 378
 379 // Check the sensetive volume
 380    if(id==fIdSens1||id==fIdSens2||id==fIdSens3||id==fIdSens4||id==fIdSens5)
 381      {
 382        if(gMC->IsTrackEntering())
 383          {
 384            vol[2]=copy;
 385            gMC->CurrentVolOffID(1,copy1);
 386            vol[1]=copy1;
 387            gMC->CurrentVolOffID(2,copy2);
 388            vol[0]=copy2;
 389
 390            gMC->TrackPosition(pos);
 391            hits[0]=pos[0];
 392            hits[1]=pos[1];
 393            hits[2]=pos[2];
 394
 395            gMC->TrackMomentum(mom);
 396            hits[3]=mom[0];
 397            hits[4]=mom[1];
 398            hits[5]=mom[2];
 399
 400            Int_t iPart= gMC->TrackPid();
 401            Int_t partId=gMC->IdFromPDG(iPart);
 402            hits[7]=partId;
 403            hits[8]=1e9*gMC->TrackTime();
 404            de=0.;
 405          }
 406        if(gMC->IsTrackInside()){
 407            de=de+1000.*gMC->Edep();
 408        }
 409
 410        if(gMC->IsTrackExiting()
 411           ||gMC->IsTrackDisappeared()||
 412           gMC->IsTrackStop())
 413          {
 414              hits[6]=de+1000.*gMC->Edep();
 415       new(lhits[fNhits++]) AliFMDhit(fIshunt,gAlice->CurrentTrack(),vol,hits);
 416          } // IsTrackExiting()
 417      }
 418   }
 419
 420 //--------------------------------------------------------------------------
 421
 422 void AliFMDv2::Response( Float_t Edep)
 423 {
 424   Float_t I=1.664*0.04*2.33/22400; // = 0.69e-6;
 425   Float_t chargeOnly=Edep/I;
 426   //Add noise ~500electrons
 427   Int_t charge=500;
 428   if (Edep>0)
 429      charge=Int_t(gRandom->Gaus(chargeOnly,500));
 430  }
 431
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