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