FMD/AliFMDv2.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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  10  * copies and that both the copyright notice and this permission notice   *
  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 //                                                                 //
  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[5];
  92     //ppcon1[15],ppcon2[15],ppcon3[15],ppcon4[15],ppcon5[15];
  93   Float_t z[5]={62.8, 75.2, -83.4, -75.2, -340.};
  94   Float_t NylonTube[3]={0.2,0.6,0.45};
  95   Float_t zPCB=0.12; Float_t zHoneyComb=0.5;
  96   Float_t zSi=0.03;
  97
  98 //-------------------------------------------------------------------
  99  //  FMD
 100  //------------------------------------------------------------------
 101   //  cout<<" !!!!!!!!!!!New FMD geometry !!!!!!!!!"<<endl;
 102
 103
 104   char nameFMD[5], nameSi[5], nameSector[5], nameRing[5];
 105   Char_t nameHoney[5], nameHoneyIn[5], nameHoneyOut[5];
 106   Char_t namePCB[5], nameCopper[5], nameChips[5], nameG10[5];
 107   Char_t nameLPCB[5], nameLCopper[5], nameLChips[5], nameGL10[5];;
 108   Float_t rin[5]={4.2,15.4,4.2,15.4,4.2};
 109   Float_t rout[5]={17.4,28.4,17.4,28.4,17.4};
 110   Float_t RinHoneyComb[5] ={ 5.15,16.4,  5.15,16.4,  5.15};
 111   Float_t RoutHoneyComb[5]={20.63,34.92,22.3, 32.02,20.63};
 112   Float_t zInside;
 113   Float_t zCooper=0.01; Float_t zChips=0.01;
 114   Float_t yNylonTube[5]={10,20,10,20,10};
 115
 116
 117   AliMatrix(idrotm[901], 90, 0, 90, 90, 180, 0);
 118
 119
 120   // Nylon tubes
 121    gMC->Gsvolu("GNYL","TUBE", idtmed[1], NylonTube, 3);  //support nylon tube
 122    Float_t wideSupport=zSi+3*zPCB+2*NylonTube[2]+zHoneyComb;
 123    //   cout<<" wideSupport "<<wideSupport<<endl;
 124
 125   for (ifmd=0; ifmd<5; ifmd++)
 126     {
 127       sprintf(nameFMD,"FMD%d",ifmd+1);
 128       ppcon[0]=0;
 129       ppcon[1]=360;
 130       ppcon[2]=4;
 131
 132       ppcon[3]=-wideSupport;
 133       ppcon[4]=rin[ifmd]+0.1;
 134       ppcon[5]=rout[ifmd]+0.1;
 135
 136       ppcon[6]=ppcon[3]+2*zSi+2*zPCB+2*NylonTube[2];
 137       ppcon[7]=rin[ifmd]+0.1;
 138       ppcon[8]=rout[ifmd]+0.1;
 139
 140       ppcon[9]=ppcon[6];
 141       ppcon[10]=RinHoneyComb[ifmd]+0.1;
 142       ppcon[11]=RoutHoneyComb[ifmd]+0.1;
 143
 144       ppcon[12]=ppcon[9]+2*zHoneyComb+zPCB;
 145       ppcon[13]=RinHoneyComb[ifmd]+0.1;
 146       ppcon[14]=RoutHoneyComb[ifmd]+0.1;
 147       zFMD=z[ifmd]+wideSupport/2.;
 148       gMC->Gsvolu(nameFMD,"PCON",idtmed[0],ppcon,15);
 149       if (z[ifmd] >0){
 150         gMC->Gspos(nameFMD,1,"ALIC",0,0,z[ifmd],0, "ONLY");}
 151       else {
 152         gMC->Gspos(nameFMD,1,"ALIC",0,0,z[ifmd],idrotm[901], "ONLY");}
 153      //silicon
 154       sprintf(nameSi,"GSI%d",ifmd+1);
 155       sprintf(nameSector,"GSC%d",ifmd+1);
 156       sprintf(nameRing,"GRN%d",ifmd+1);
 157
 158       //honeycomb support
 159       sprintf(nameHoney,"GSU%d",ifmd+1);
 160       gMC->Gsvolu(nameHoney,"TUBE", idtmed[0], par, 0);  //honeycomb
 161       sprintf(nameHoneyIn,"GHI%d",ifmd+1);
 162       gMC->Gsvolu(nameHoneyIn,"TUBE", idtmed[7], par, 0);  //honey comb inside
 163       sprintf(nameHoneyOut,"GHO%d",ifmd+1);
 164       gMC->Gsvolu(nameHoneyOut,"TUBE", idtmed[6], par, 0);  //honey comb skin
 165       //PCB
 166       sprintf(namePCB,"GPC%d",ifmd+1);
 167       gMC->Gsvolu(namePCB,"TUBE", idtmed[0], par, 0); //PCB
 168       sprintf(nameCopper,"GCO%d",ifmd+1);
 169       gMC->Gsvolu(nameCopper,"TUBE", idtmed[3], par, 0);  // Cooper
 170       sprintf(nameChips,"GCH%d",ifmd+1);
 171       gMC->Gsvolu(nameChips,"TUBE", idtmed[5], par, 0); // Si chips
 172       sprintf(nameG10,"G10%d",ifmd+1);
 173       gMC->Gsvolu(nameG10,"TUBE", idtmed[2], par, 0);  //G10 plate
 174       //last PCB
 175       sprintf(nameLPCB,"GPL%d",ifmd+1);
 176       gMC->Gsvolu(nameLPCB,"TUBE", idtmed[0], par, 0); //PCB
 177       sprintf(nameLCopper,"GCL%d",ifmd+1);
 178       gMC->Gsvolu(nameLCopper,"TUBE", idtmed[3], par, 0);  // Cooper
 179       sprintf(nameLChips,"GHL%d",ifmd+1);
 180       gMC->Gsvolu(nameLChips,"TUBE", idtmed[5], par, 0); // Si chips
 181       sprintf(nameGL10,"G1L%d",ifmd+1);
 182       gMC->Gsvolu(nameGL10,"TUBE", idtmed[2], par, 0); // Last G10
 183       par[0]=rin[ifmd]; // pipe size
 184       par[1]=rout[ifmd];
 185       par[2]=zSi/2;
 186       gMC->Gsvolu(nameSi,"TUBE", idtmed[4], par, 3);
 187       zInside=ppcon[3]+par[2];
 188        gMC->Gspos(nameSi,ifmd+1,nameFMD,0,0,zInside,0, "ONLY");
 189       //PCB 1
 190       zInside += par[2]+zPCB/2;
 191       par[2]=zPCB/2;
 192       gMC->Gsposp(namePCB,1,nameFMD,0,0,zInside,0, "ONLY",par,3);
 193       zInside += zPCB;
 194       gMC->Gsposp(namePCB,2,nameFMD,0,0,zInside,0, "ONLY",par,3);
 195       Float_t NulonTubeBegin=zInside+2.5*zPCB;
 196       par[2]=zPCB/2-0.02;
 197       Float_t zInPCB = -zPCB/2+par[2];
 198       gMC->Gsposp(nameG10,1,namePCB,0,0,zInPCB,0, "ONLY",par,3);
 199       zInPCB+=par[2]+zCooper/2 ;
 200       par[2]=zCooper/2;
 201       gMC->Gsposp(nameCopper,1,namePCB,0,0,zInPCB,0, "ONLY",par,3);
 202       zInPCB += zCooper/2 + zChips/2;
 203       par[2]=zChips/2;
 204       gMC->Gsposp(nameChips,1,namePCB,0,0,zInPCB,0, "ONLY",par,3);
 205       //HoneyComb
 206       zHoneyComb=0.8;
 207       par[0] = RinHoneyComb[ifmd];
 208       par[1] = RoutHoneyComb[ifmd];
 209       par[2] = zHoneyComb/2;
 210       zInside += 2*NylonTube[2]+par[2];
 211       gMC->Gsposp(nameHoney,1,nameFMD,0,0,zInside,0, "ONLY",par,3);
 212       par[2]=0.1/2;
 213       Float_t zHoney=-zHoneyComb/2+par[2];
 214       gMC->Gsposp(nameHoneyOut,1,nameHoney,0,0,zHoney,0,
 215                   "ONLY",par,3); //shkurki
 216       zHoney=zHoneyComb/2-par[2];
 217       gMC->Gsposp(nameHoneyOut,2,nameHoney,0,0,zHoney,0, "ONLY",par,3);
 218       par[2]=(zHoneyComb-2.*0.1)/2; //soty vnutri
 219       gMC->Gsposp(nameHoneyIn,1,nameHoney,0,0,0,0, "ONLY",par,3);
 220
 221       gMC->Gspos("GNYL",1,nameFMD,0,yNylonTube[ifmd],
 222                  NulonTubeBegin+NylonTube[2]/2.,0, "ONLY");
 223       gMC->Gspos("GNYL",2,nameFMD,0,-yNylonTube[ifmd],
 224                  NulonTubeBegin+NylonTube[2]/2.,0, "ONLY");
 225
 226       //last PCB
 227       par[0]=RoutHoneyComb[ifmd]-9;
 228       par[1]=RoutHoneyComb[ifmd];
 229       par[2]=zPCB/2;
 230       zInside += zHoneyComb/2+par[2];
 231       gMC->Gsposp(nameLPCB,1,nameFMD,0,0,zInside,0, "ONLY",par,3);
 232
 233        par[2]=zPCB/2-0.02;
 234        zInPCB = -zPCB/2+par[2];
 235        gMC->Gsposp(nameGL10,1,nameLPCB,0,0,zInPCB,0, "ONLY",par,3);
 236        zInPCB+=par[2]+zCooper/2 ;
 237        par[2]=zCooper/2;
 238        gMC->Gsposp(nameLCopper,1,nameLPCB,0,0,zInPCB,0, "ONLY",par,3);
 239        zInPCB += zCooper/2 + zChips/2;
 240        par[2]=zChips/2;
 241        gMC->Gsposp(nameLChips,1,nameLPCB,0,0,zInPCB,0, "ONLY",par,3);
 242
 243
 244      //Granularity
 245     fSectorsSi1=20;
 246     fRingsSi1=256*3;
 247     // fRingsSi1=3; // for drawing only
 248     fSectorsSi2=40;
 249      fRingsSi2=128*3;
 250      //  fRingsSi2=3; //for  drawing onl
 251     if(ifmd==1||ifmd==3)
 252       {
 253         gMC->Gsdvn(nameSector, nameSi , fSectorsSi2, 2);
 254         gMC->Gsdvn(nameRing, nameSector, fRingsSi2, 1);
 255       }
 256     else
 257       {
 258         gMC->Gsdvn(nameSector, nameSi , fSectorsSi1, 2);
 259         gMC->Gsdvn(nameRing, nameSector , fRingsSi1, 1);
 260       }
 261
 262     }
 263 }
 264
 265
 266 //------------------------------------------------------------------------
 267
 268
 269 void AliFMDv2::CreateMaterials()
 270 {
 271  Int_t isxfld   = gAlice->Field()->Integ();
 272  Float_t sxmgmx = gAlice->Field()->Max();
 273
 274  // Plastic CH
 275  Float_t aPlastic[2]={1.01,12.01};
 276  Float_t zPlastic[2]={1,6};
 277  Float_t wPlastic[2]={1,1};
 278  Float_t denPlastic=1.03;
 279  //     60% SiO2 , 40% G10FR4
 280  // PC board
 281  Float_t apcb[3]  = { 28.0855,15.9994,17.749 };
 282  Float_t zpcb[3]  = { 14.,8.,8.875 };
 283  Float_t wpcb[3]  = { .28,.32,.4 };
 284  Float_t denspcb  = 1.8;
 285    //
 286
 287  //*** Definition Of avaible FMD materials ***
 288  AliMaterial(0, "FMD Air$", 14.61, 7.3, .001205, 30423.,999);
 289  AliMixture(1, "Plastic$",aPlastic,zPlastic,denPlastic,-2,wPlastic);
 290  AliMixture(2, "SSD PCB$",   apcb, zpcb, denspcb, 3, wpcb);
 291  AliMaterial(3, "SSD Copper$", 63.546, 29., 8.96, 1.43, 999.);
 292  AliMaterial(4, "SSD Si$",      28.0855, 14., 2.33, 9.36, 999.);
 293  AliMaterial(5, "SSD Si chip$", 28.0855, 14., 2.33, 9.36, 999.);
 294  AliMaterial(6, "SSD C$",       12.011,   6., 2.265,18.8, 999.);
 295  AliMaterial(7, "SSD Kapton$", 12.011, 6., 0.01, 31.27, 999.);//honeycomb
 296   AliMaterial(8, "SSD G10FR4$", 17.749, 8.875, 1.8, 21.822, 999.);
 297
 298
 299 //**
 300  AliMedium(0, "FMD air$", 0, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
 301  AliMedium(1, "Plastic$", 1, 0,isxfld, sxmgmx,  10., .01, 1., .003, .003);
 302  AliMedium(2, "SSD PCB$", 2, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
 303  AliMedium(3, "SSD Copper$", 3, 0,isxfld, sxmgmx,  10., .01, 1., .003, .003);
 304  AliMedium(4, "SSD Si$", 4, 1, isxfld, sxmgmx, 1., .001, 1., .001, .001);
 305  AliMedium(5, "SSD Si chip$", 5, 0,isxfld, sxmgmx,  10., .01, 1., .003, .003);
 306  AliMedium(6, "SSD C$", 6, 0,isxfld, sxmgmx,  10., .01, 1., .003, .003);
 307  AliMedium(7, "SSD Kapton$", 7, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
 308  AliMedium(8, "SSD G10FR4$", 8, 0,isxfld, sxmgmx,  10., .01, 1., .003, .003);
 309
 310
 311
 312 }
 313
 314 //---------------------------------------------------------------------
 315 void AliFMDv2::DrawDetector()
 316 {
 317 //
 318 // Draw a shaded view of the Forward multiplicity detector version 0
 319 //
 320
 321
 322 //Set ALIC mother transparent
 323 gMC->Gsatt("ALIC","SEEN",0);
 324 //
 325 //Set volumes visible
 326 gMC->Gsatt("FMD1","SEEN",1);
 327 gMC->Gsatt("FMD2","SEEN",1);
 328 gMC->Gsatt("FMD3","SEEN",1);
 329 gMC->Gsatt("FMD4","SEEN",1);
 330 gMC->Gsatt("FMD5","SEEN",1);
 331
 332 //
 333 gMC->Gdopt("hide","on");
 334 gMC->Gdopt("shad","on");
 335 gMC->SetClipBox(".");
 336 gMC->SetClipBox("*",0,1000,-1000,1000,-1000,1000);
 337 gMC->DefaultRange();
 338 gMC->Gdraw("alic",40,30,0,12,9.5,.2,0.2);
 339 gMC->Gdhead(1111,"Forward multiplicity detector");
 340 gMC->Gdopt("hide","off");
 341 }
 342 //-------------------------------------------------------------------
 343 void AliFMDv2::Init()
 344 {
 345 // Initialises version 0 of the Forward Multiplicity Detector
 346 //
 347 AliFMD::Init();
 348 fIdSens1=gMC->VolId("GRN1");
 349 fIdSens2=gMC->VolId("GRN2");
 350 fIdSens3=gMC->VolId("GRN3");
 351 fIdSens4=gMC->VolId("GRN4");
 352 fIdSens5=gMC->VolId("GRN5");
 353 printf("*** FMD version 2 initialized ***\n");
 354 }
 355
 356 //-------------------------------------------------------------------
 357
 358 void AliFMDv2::StepManager()
 359 {
 360   //
 361   // Called for every step in the Forward Multiplicity Detector
 362   //
 363   Int_t id,copy,copy1,copy2;
 364   static Float_t hits[9];
 365   static Int_t vol[3];
 366   static Float_t de;
 367   TLorentzVector pos;
 368   TLorentzVector mom;
 369
 370
 371   TClonesArray &lhits = *fHits;
 372   if(!gMC->IsTrackAlive()) return; // particle has disappeared
 373
 374   Float_t charge = gMC->TrackCharge();
 375   if(TMath::Abs(charge)<=0.) return; //take only charged particles
 376
 377   //  printf(" in StepManeger \n");
 378   id=gMC->CurrentVolID(copy);
 379
 380 // Check the sensetive volume
 381    if(id==fIdSens1||id==fIdSens2||id==fIdSens3||id==fIdSens4||id==fIdSens5)
 382      {
 383        if(gMC->IsTrackEntering())
 384          {
 385            vol[2]=copy;
 386            gMC->CurrentVolOffID(1,copy1);
 387            vol[1]=copy1;
 388            gMC->CurrentVolOffID(2,copy2);
 389            vol[0]=copy2;
 390
 391            gMC->TrackPosition(pos);
 392            hits[0]=pos[0];
 393            hits[1]=pos[1];
 394            hits[2]=pos[2];
 395
 396            gMC->TrackMomentum(mom);
 397            hits[3]=mom[0];
 398            hits[4]=mom[1];
 399            hits[5]=mom[2];
 400
 401            Int_t iPart= gMC->TrackPid();
 402            Int_t partId=gMC->IdFromPDG(iPart);
 403            hits[7]=partId;
 404            hits[8]=1e9*gMC->TrackTime();
 405            de=0.;
 406          }
 407        if(gMC->IsTrackInside()){
 408            de=de+1000.*gMC->Edep();
 409        }
 410
 411        if(gMC->IsTrackExiting()
 412           ||gMC->IsTrackDisappeared()||
 413           gMC->IsTrackStop())
 414          {
 415              hits[6]=de+1000.*gMC->Edep();
 416       new(lhits[fNhits++]) AliFMDhit(fIshunt,gAlice->CurrentTrack(),vol,hits);
 417          } // IsTrackExiting()
 418      }
 419   }
 420
 421 //--------------------------------------------------------------------------
 422
 423 void AliFMDv2::Response( Float_t Edep)
 424 {
 425   Float_t I=1.664*0.04*2.33/22400; // = 0.69e-6;
 426   Float_t chargeOnly=Edep/I;
 427   //Add noise ~500electrons
 428   Int_t charge=500;
 429   if (Edep>0)
 430      charge=Int_t(gRandom->Gaus(chargeOnly,500));
 431  }
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