FMD/AliFMDv1.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 <TClonesArray.h>
  35 #include <TDirectory.h>
  36 #include <TFile.h>
  37 #include <TGeometry.h>
  38 #include <TLorentzVector.h>
  39 #include <TMath.h>
  40 #include <TNode.h>
  41 #include <TTUBE.h>
  42 #include <TTree.h>
  43 #include <TVirtualMC.h>
  44
  45 #include "AliFMDdigit.h"
  46 #include "AliFMDhit.h"
  47 #include "AliFMDv0.h"
  48 #include "AliFMDv1.h"
  49 #include "AliMagF.h"
  50 #include "AliRun.h"
  51 #include "AliMC.h"
  52
  53 ClassImp(AliFMDv1)
  54
  55 //--------------------------------------------------------------------
  56 AliFMDv1::AliFMDv1(const char *name, const char *title):
  57  AliFMD(name,title)
  58 {
  59   //
  60   // Standart constructor for Forward Multiplicity Detector version 0
  61   //
  62   fIdSens1=0;
  63   fIdSens2=0;
  64   fIdSens3=0;
  65   fIdSens4=0;
  66   fIdSens5=0;
  67 //  setBufferSize(128000);
  68  }
  69 //-------------------------------------------------------------------------
  70 void AliFMDv1::CreateGeometry()
  71 {
  72  //
  73   // Create the geometry of Forward Multiplicity Detector version 0
  74   //
  75   //Detector consists of 6 volumes:
  76   // 1st covered pseudorapidity interval from 3.3 to 2.0
  77   // and placed on 65cm in Z-direction;
  78   // 2nd - from 2.0 to 1.6 and Z=85 cm;
  79   // 3d  - the same pseudorapidity interval as the 1st
  80   // but on the other side from the interaction point z=-65cm;
  81   // 4th - simmetricaly with the 2nd :
  82   // pseudorapidity from 2.0 to 1.6, Z=-85cm
  83   // 5th - from 3.6 to 4.7, Z=-270cm
  84   // 6th - from 4.5 to 5.5 , Z=-630cm.
  85   // Each part has 400mkm Si (sensetive area, detector itself),
  86   // 0.75cm of plastic simulated electronics material,
  87   // Al support ring 2cm thickness and 1cm width placed on
  88   // the outer radius of each Si disk;
  89   //
  90   // begin Html
  91   /*
  92    <img src="gif/AliFMDv0.gif">
  93    */
  94   //
  95
  96
  97
  98   Int_t *idtmed = fIdtmed->GetArray();
  99
 100   Int_t ifmd;
 101   Int_t idrotm[999];
 102   Float_t zFMD,par[3],ppcon[15];
 103   Float_t z[5]={-62.8, -75.2, 83.4, 75.2, 340.};
 104   Float_t NylonTube[3]={0.2,0.6,0.45};
 105   Float_t zPCB=0.12; Float_t zHoneyComb=0.5;
 106   Float_t zSi=0.03;
 107
 108   char nameFMD[5], nameSi[5], nameSector[5], nameRing[5];
 109   Char_t nameHoney[5], nameHoneyIn[5], nameHoneyOut[5];
 110   Char_t namePCB[5], nameCopper[5], nameChips[5], nameG10[5];
 111   Char_t nameLPCB[5], nameLCopper[5], nameLChips[5], nameGL10[5];;
 112   Float_t rin[5]={4.2,15.4,4.2,15.4,4.2};
 113   Float_t rout[5]={17.4,28.4,17.4,28.4,17.4};
 114   Float_t RinHoneyComb[5] ={ 5.15,16.4,  5.15,16.4,  5.15};
 115   Float_t RoutHoneyComb[5]={20.63,34.92,22.3, 32.02,20.63};
 116   Float_t zInside;
 117   Float_t zCooper=0.01; Float_t zChips=0.01;
 118   Float_t yNylonTube[5]={10,20,10,20,10};
 119
 120
 121   AliMatrix(idrotm[901], 90, 0, 90, 90, 180, 0);
 122
 123
 124   // Nylon tubes
 125    gMC->Gsvolu("GNYL","TUBE", idtmed[1], NylonTube, 3);  //support nylon tube
 126    Float_t wideSupport=zSi+3*zPCB+2*NylonTube[2]+zHoneyComb;
 127      cout<<" wideSupport "<<wideSupport<<endl;
 128
 129  for (ifmd=0; ifmd<5; ifmd++)
 130     {
 131       sprintf(nameFMD,"FMD%d",ifmd+1);
 132       ppcon[0]=0;
 133       ppcon[1]=360;
 134       ppcon[2]=4;
 135
 136       ppcon[3]=-wideSupport;
 137       ppcon[4]=rin[ifmd]+0.1;
 138       ppcon[5]=rout[ifmd]+0.1;
 139
 140       ppcon[6]=ppcon[3]+2*zSi+2*zPCB+2*NylonTube[2];
 141       ppcon[7]=rin[ifmd]+0.1;
 142       ppcon[8]=rout[ifmd]+0.1;
 143
 144       ppcon[9]=ppcon[6];
 145       ppcon[10]=RinHoneyComb[ifmd]+0.1;
 146       ppcon[11]=RoutHoneyComb[ifmd]+0.1;
 147
 148       ppcon[12]=ppcon[9]+2*zHoneyComb+zPCB;
 149       ppcon[13]=RinHoneyComb[ifmd]+0.1;
 150       ppcon[14]=RoutHoneyComb[ifmd]+0.1;
 151       gMC->Gsvolu(nameFMD,"PCON",idtmed[0],ppcon,15);
 152       if (z[ifmd] >0){
 153         zFMD=z[ifmd]+wideSupport;
 154         gMC->Gspos(nameFMD,1,"ALIC",0,0,zFMD,0, "ONLY");}
 155       else {
 156         zFMD=z[ifmd]-wideSupport;
 157         gMC->Gspos(nameFMD,1,"ALIC",0,0,zFMD,idrotm[901], "ONLY");}
 158      //silicon
 159       sprintf(nameSi,"GSI%d",ifmd+1);
 160       sprintf(nameSector,"GSC%d",ifmd+1);
 161       sprintf(nameRing,"GRN%d",ifmd+1);
 162
 163       //honeycomb support
 164       sprintf(nameHoney,"GSU%d",ifmd+1);
 165       gMC->Gsvolu(nameHoney,"TUBE", idtmed[0], par, 0);  //honeycomb
 166       sprintf(nameHoneyIn,"GHI%d",ifmd+1);
 167       gMC->Gsvolu(nameHoneyIn,"TUBE", idtmed[7], par, 0);  //honey comb inside
 168       sprintf(nameHoneyOut,"GHO%d",ifmd+1);
 169       gMC->Gsvolu(nameHoneyOut,"TUBE", idtmed[6], par, 0);  //honey comb skin
 170       //PCB
 171       sprintf(namePCB,"GPC%d",ifmd+1);
 172       gMC->Gsvolu(namePCB,"TUBE", idtmed[0], par, 0); //PCB
 173       sprintf(nameCopper,"GCO%d",ifmd+1);
 174       gMC->Gsvolu(nameCopper,"TUBE", idtmed[3], par, 0);  // Cooper
 175       sprintf(nameChips,"GCH%d",ifmd+1);
 176       gMC->Gsvolu(nameChips,"TUBE", idtmed[5], par, 0); // Si chips
 177       sprintf(nameG10,"G10%d",ifmd+1);
 178       gMC->Gsvolu(nameG10,"TUBE", idtmed[2], par, 0);  //G10 plate
 179       //last PCB
 180       sprintf(nameLPCB,"GPL%d",ifmd+1);
 181       gMC->Gsvolu(nameLPCB,"TUBE", idtmed[0], par, 0); //PCB
 182       sprintf(nameLCopper,"GCL%d",ifmd+1);
 183       gMC->Gsvolu(nameLCopper,"TUBE", idtmed[3], par, 0);  // Cooper
 184       sprintf(nameLChips,"GHL%d",ifmd+1);
 185       gMC->Gsvolu(nameLChips,"TUBE", idtmed[5], par, 0); // Si chips
 186       sprintf(nameGL10,"G1L%d",ifmd+1);
 187       gMC->Gsvolu(nameGL10,"TUBE", idtmed[2], par, 0); // Last G10
 188       par[0]=rin[ifmd]; // pipe size
 189       par[1]=rout[ifmd];
 190       par[2]=zSi/2;
 191       gMC->Gsvolu(nameSi,"TUBE", idtmed[4], par, 3);
 192       zInside=ppcon[3]+par[2];
 193        gMC->Gspos(nameSi,ifmd+1,nameFMD,0,0,zInside,0, "ONLY");
 194       //PCB 1
 195       zInside += par[2]+zPCB/2;
 196       par[2]=zPCB/2;
 197       gMC->Gsposp(namePCB,1,nameFMD,0,0,zInside,0, "ONLY",par,3);
 198       zInside += zPCB;
 199       gMC->Gsposp(namePCB,2,nameFMD,0,0,zInside,0, "ONLY",par,3);
 200       Float_t NulonTubeBegin=zInside+2.5*zPCB;
 201       par[2]=zPCB/2-0.02;
 202       Float_t zInPCB = -zPCB/2+par[2];
 203       gMC->Gsposp(nameG10,1,namePCB,0,0,zInPCB,0, "ONLY",par,3);
 204       zInPCB+=par[2]+zCooper/2 ;
 205       par[2]=zCooper/2;
 206       gMC->Gsposp(nameCopper,1,namePCB,0,0,zInPCB,0, "ONLY",par,3);
 207       zInPCB += zCooper/2 + zChips/2;
 208       par[2]=zChips/2;
 209       gMC->Gsposp(nameChips,1,namePCB,0,0,zInPCB,0, "ONLY",par,3);
 210       //HoneyComb
 211       zHoneyComb=0.8;
 212       par[0] = RinHoneyComb[ifmd];
 213       par[1] = RoutHoneyComb[ifmd];
 214       par[2] = zHoneyComb/2;
 215       zInside += 2*NylonTube[2]+par[2];
 216       gMC->Gsposp(nameHoney,1,nameFMD,0,0,zInside,0, "ONLY",par,3);
 217       par[2]=0.1/2;
 218       Float_t zHoney=-zHoneyComb/2+par[2];
 219       gMC->Gsposp(nameHoneyOut,1,nameHoney,0,0,zHoney,0,
 220                   "ONLY",par,3); //shkurki
 221       zHoney=zHoneyComb/2-par[2];
 222       gMC->Gsposp(nameHoneyOut,2,nameHoney,0,0,zHoney,0, "ONLY",par,3);
 223       par[2]=(zHoneyComb-2.*0.1)/2; //soty vnutri
 224       gMC->Gsposp(nameHoneyIn,1,nameHoney,0,0,0,0, "ONLY",par,3);
 225
 226       gMC->Gspos("GNYL",1,nameFMD,0,yNylonTube[ifmd],
 227                  NulonTubeBegin+NylonTube[2]/2.,0, "ONLY");
 228       gMC->Gspos("GNYL",2,nameFMD,0,-yNylonTube[ifmd],
 229                  NulonTubeBegin+NylonTube[2]/2.,0, "ONLY");
 230
 231       //last PCB
 232       par[0]=RoutHoneyComb[ifmd]-9;
 233       par[1]=RoutHoneyComb[ifmd];
 234       par[2]=zPCB/2;
 235       zInside += zHoneyComb/2+par[2];
 236       gMC->Gsposp(nameLPCB,1,nameFMD,0,0,zInside,0, "ONLY",par,3);
 237
 238        par[2]=zPCB/2-0.02;
 239        zInPCB = -zPCB/2+par[2];
 240        gMC->Gsposp(nameGL10,1,nameLPCB,0,0,zInPCB,0, "ONLY",par,3);
 241        zInPCB+=par[2]+zCooper/2 ;
 242        par[2]=zCooper/2;
 243        gMC->Gsposp(nameLCopper,1,nameLPCB,0,0,zInPCB,0, "ONLY",par,3);
 244        zInPCB += zCooper/2 + zChips/2;
 245        par[2]=zChips/2;
 246        gMC->Gsposp(nameLChips,1,nameLPCB,0,0,zInPCB,0, "ONLY",par,3);
 247
 248
 249      //Granularity
 250     fSectorsSi1=20;
 251     fRingsSi1=256*2;
 252     // fRingsSi1=3; // for drawing only
 253     fSectorsSi2=40;
 254      fRingsSi2=128*2;
 255      //  fRingsSi2=3; //for  drawing onl
 256     if(ifmd==1||ifmd==3)
 257       {
 258         gMC->Gsdvn(nameSector, nameSi , fSectorsSi2, 2);
 259         gMC->Gsdvn(nameRing, nameSector, fRingsSi2, 1);
 260       }
 261     else
 262       {
 263         gMC->Gsdvn(nameSector, nameSi , fSectorsSi1, 2);
 264         gMC->Gsdvn(nameRing, nameSector , fRingsSi1, 1);
 265       }
 266
 267     }
 268 }
 269
 270
 271 //------------------------------------------------------------------------
 272 void AliFMDv1::CreateMaterials()
 273 {
 274  Int_t isxfld   = gAlice->Field()->Integ();
 275  Float_t sxmgmx = gAlice->Field()->Max();
 276
 277  // Plastic CH
 278  Float_t aPlastic[2]={1.01,12.01};
 279  Float_t zPlastic[2]={1,6};
 280  Float_t wPlastic[2]={1,1};
 281  Float_t denPlastic=1.03;
 282    //
 283   //     60% SiO2 , 40% G10FR4
 284  // PC board
 285  Float_t apcb[3]  = { 28.0855,15.9994,17.749 };
 286  Float_t zpcb[3]  = { 14.,8.,8.875 };
 287  Float_t wpcb[3]  = { .28,.32,.4 };
 288  Float_t denspcb  = 1.8;
 289    //
 290  //*** Definition Of avaible FMD materials ***
 291  AliMaterial(0, "FMD Air$", 14.61, 7.3, .001205, 30423.,999);
 292  AliMixture(1, "Plastic$",aPlastic,zPlastic,denPlastic,-2,wPlastic);
 293  AliMixture(2, "SSD PCB$",   apcb, zpcb, denspcb, 3, wpcb);
 294  AliMaterial(3, "SSD Copper$", 63.546, 29., 8.96, 1.43, 999.);
 295  AliMaterial(4, "SSD Si$",      28.0855, 14., 2.33, 9.36, 999.);
 296  AliMaterial(5, "SSD Si chip$", 28.0855, 14., 2.33, 9.36, 999.);
 297  AliMaterial(6, "SSD C$",       12.011,   6., 2.265,18.8, 999.);
 298  AliMaterial(7, "SSD Kapton$", 12.011, 6., 0.01, 31.27, 999.);//honeycomb
 299   AliMaterial(8, "SSD G10FR4$", 17.749, 8.875, 1.8, 21.822, 999.);
 300
 301
 302 //**
 303  AliMedium(0, "FMD air$", 0, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
 304  AliMedium(1, "Plastic$", 1, 0,isxfld, sxmgmx,  10., .01, 1., .003, .003);
 305  AliMedium(2, "SSD PCB$", 2, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
 306  AliMedium(3, "SSD Copper$", 3, 0,isxfld, sxmgmx,  10., .01, 1., .003, .003);
 307  AliMedium(4, "SSD Si$", 4, 1, isxfld, sxmgmx, 1., .001, 1., .001, .001);
 308  AliMedium(5, "SSD Si chip$", 5, 0,isxfld, sxmgmx,  10., .01, 1., .003, .003);
 309  AliMedium(6, "SSD C$", 6, 0,isxfld, sxmgmx,  10., .01, 1., .003, .003);
 310  AliMedium(7, "SSD Kapton$", 7, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
 311  AliMedium(8, "SSD G10FR4$", 8, 0,isxfld, sxmgmx,  10., .01, 1., .003, .003);
 312
 313
 314
 315 }
 316 //---------------------------------------------------------------------
 317 void AliFMDv1::DrawDetector()
 318 {
 319 //
 320 // Draw a shaded view of the Forward multiplicity detector version 0
 321 //
 322
 323 //Set ALIC mother transparent
 324 gMC->Gsatt("ALIC","SEEN",0);
 325 //
 326 //Set volumes visible
 327 gMC->Gsatt("FMD1","SEEN",1);
 328 gMC->Gsatt("FMD2","SEEN",1);
 329 gMC->Gsatt("FMD3","SEEN",1);
 330 gMC->Gsatt("FMD4","SEEN",1);
 331 gMC->Gsatt("FMD5","SEEN",1);
 332
 333 //
 334 gMC->Gdopt("hide","on");
 335 gMC->Gdopt("shad","on");
 336 gMC->SetClipBox(".");
 337 gMC->SetClipBox("*",0,1000,-1000,1000,-1000,1000);
 338 gMC->DefaultRange();
 339 gMC->Gdraw("alic",40,30,0,12,9.5,.2,0.2);
 340 gMC->Gdhead(1111,"Forward multiplicity detector");
 341 gMC->Gdopt("hide","off");
 342 }
 343 //-------------------------------------------------------------------
 344 void AliFMDv1::Init()
 345 {
 346 // Initialises version 0 of the Forward Multiplicity Detector
 347 //
 348 AliFMD::Init();
 349 fIdSens1=gMC->VolId("GRN1");
 350 fIdSens2=gMC->VolId("GRN2");
 351 fIdSens3=gMC->VolId("GRN3");
 352 fIdSens4=gMC->VolId("GRN4");
 353 fIdSens5=gMC->VolId("GRN5");
 354 printf("*** FMD version 1 initialized ***\n");
 355 }
 356
 357 //-------------------------------------------------------------------
 358
 359 void AliFMDv1::StepManager()
 360 {
 361   //
 362   // Called for every step in the Forward Multiplicity Detector
 363   //
 364   Int_t id,copy,copy1,copy2;
 365   static Float_t hits[9];
 366   static Int_t vol[3];
 367   static Float_t de;
 368   TLorentzVector pos;
 369   TLorentzVector mom;
 370
 371
 372   TClonesArray &lhits = *fHits;
 373   if(!gMC->IsTrackAlive()) return; // particle has disappeared
 374
 375   Float_t charge = gMC->TrackCharge();
 376   if(TMath::Abs(charge)<=0.) return; //take only charged particles
 377
 378   //  printf(" in StepManeger \n");
 379   id=gMC->CurrentVolID(copy);
 380   //((TGeant3*)gMC)->Gpcxyz();
 381
 382 // Check the sensetive volume
 383    if(id==fIdSens1||id==fIdSens2||id==fIdSens3||id==fIdSens4||id==fIdSens5)
 384      {
 385        if(gMC->IsTrackEntering())
 386          {
 387            vol[2]=copy;
 388            gMC->CurrentVolOffID(1,copy1);
 389            vol[1]=copy1;
 390            gMC->CurrentVolOffID(2,copy2);
 391            vol[0]=copy2;
 392
 393            gMC->TrackPosition(pos);
 394            hits[0]=pos[0];
 395            hits[1]=pos[1];
 396            hits[2]=pos[2];
 397
 398            gMC->TrackMomentum(mom);
 399            hits[3]=mom[0];
 400            hits[4]=mom[1];
 401            hits[5]=mom[2];
 402
 403            Int_t iPart= gMC->TrackPid();
 404            Int_t partId=gMC->IdFromPDG(iPart);
 405            hits[7]=partId;
 406            hits[8]=1e9*gMC->TrackTime();
 407            de=0.;
 408          }
 409        if(gMC->IsTrackInside()){
 410            de=de+1000.*gMC->Edep();
 411        }
 412
 413        if(gMC->IsTrackExiting()
 414           ||gMC->IsTrackDisappeared()||
 415           gMC->IsTrackStop())
 416          {
 417              hits[6]=de+1000.*gMC->Edep();
 418       new(lhits[fNhits++]) AliFMDhit(fIshunt,gAlice->GetMCApp()->GetCurrentTrackNumber(),vol,hits);
 419          } // IsTrackExiting()
 420      }
 421   }
 422 //--------------------------------------------------------------------------
 423
 424 void AliFMDv1::Response( Float_t Edep)
 425 {
 426   Float_t I=1.664*0.04*2.33/22400; // = 0.69e-6;
 427   Float_t chargeOnly=Edep/I;
 428   //Add noise ~500electrons
 429   Int_t charge=500;
 430   if (Edep>0)
 431      charge=Int_t(gRandom->Gaus(chargeOnly,500));
 432  }
 433
 434
 435
 436
 437
 438