FMD/AliFMDAlla.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 /* $Id$ */
  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 #include <TDatabasePDG.h>
  45 #include <AliFMDHit.h>
  46 #include "AliFMDv0.h"
  47 #include "AliFMDAlla.h"
  48 #include "AliFMDDigitizerAlla.h"
  49 #include "AliMagF.h"
  50 #include "AliRun.h"
  51 #include "AliMC.h"
  52
  53 ClassImp(AliFMDAlla)
  54 #if 0
  55   ;
  56 #endif
  57
  58 //--------------------------------------------------------------------
  59 AliFMDAlla::AliFMDAlla(const char *name, const char *title)
  60   : AliFMD(name,title)
  61 {
  62   //
  63   // Standart constructor for Forward Multiplicity Detector version 0
  64   //
  65   fIdSens1=0;
  66   fIdSens2=0;
  67   fIdSens3=0;
  68   fIdSens4=0;
  69   fIdSens5=0;
  70   //  setBufferSize(128000);
  71 }
  72 //-------------------------------------------------------------------------
  73 void
  74 AliFMDAlla::CreateGeometry()
  75 {
  76   //
  77   // Create the geometry of Forward Multiplicity Detector version 0
  78   //
  79   //Detector consists of 6 volumes:
  80   // 1st covered pseudorapidity interval from 3.3 to 2.0
  81   // and placed on 65cm in Z-direction;
  82   // 2nd - from 2.0 to 1.6 and Z=85 cm;
  83   // 3d  - the same pseudorapidity interval as the 1st
  84   // but on the other side from the interaction point z=-65cm;
  85   // 4th - simmetricaly with the 2nd :
  86   // pseudorapidity from 2.0 to 1.6, Z=-85cm
  87   // 5th - from 3.6 to 4.7, Z=-270cm
  88   // 6th - from 4.5 to 5.5 , Z=-630cm.
  89   // Each part has 400mkm Si (sensetive area, detector itself),
  90   // 0.75cm of plastic simulated electronics material,
  91   // Al support ring 2cm thickness and 1cm width placed on
  92   // the outer radius of each Si disk;
  93   //
  94   // begin Html
  95   /*
  96     <img src="gif/AliFMDv0.gif">
  97   */
  98   //
  99
 100
 101
 102   Int_t *idtmed = fIdtmed->GetArray();
 103
 104   Int_t ifmd;
 105   Int_t idrotm[999];
 106   Float_t zFMD;
 107   Float_t par[3];
 108   Float_t ppcon[15];
 109   Float_t z[5]             = {-62.8, -75.2, 83.4, 75.2, 340.};
 110   Float_t NylonTube[3]     = {0.2,0.6,0.45};
 111   Float_t zPCB             = 0.12;
 112   Float_t zHoneyComb       = 0.5;
 113   Float_t zSi              = 0.03;
 114   Float_t rin[5]           = {4.2,15.4,4.2,15.4,4.2};
 115   Float_t rout[5]          = {17.4,28.4,17.4,28.4,17.4};
 116   Float_t RinHoneyComb[5]  = { 5.15,16.4,  5.15,16.4,  5.15};
 117   Float_t RoutHoneyComb[5] = {20.63,34.92,22.3, 32.02,20.63};
 118   Float_t zInside;
 119   Float_t zCooper          = 0.01;
 120   Float_t zChips           = 0.01;
 121   Float_t yNylonTube[5]    = {10,20,10,20,10};
 122
 123   char    nameFMD[5];
 124   char    nameSi[5];
 125   char    nameSector[5];
 126   char    nameRing[5];
 127   Char_t  nameHoney[5];
 128   char    nameHoneyIn[5];
 129   char    nameHoneyOut[5];
 130   Char_t  namePCB[5];
 131   char    nameCopper[5];
 132   char    nameChips[5];
 133   char    nameG10[5];
 134   Char_t  nameLPCB[5];
 135   char    nameLCopper[5];
 136   char    nameLChips[5];
 137   char    nameGL10[5];
 138
 139   AliMatrix(idrotm[901], 90, 0, 90, 90, 180, 0);
 140
 141
 142   // Nylon tubes
 143   gMC->Gsvolu("GNYL","TUBE", idtmed[1], NylonTube, 3);  //support nylon tube
 144   Float_t wideSupport=zSi+3*zPCB+2*NylonTube[2]+zHoneyComb;
 145   AliDebug(1, Form("Support width: %f", wideSupport));
 146
 147   for (ifmd=0; ifmd<5; ifmd++)  {
 148     sprintf(nameFMD,"FMD%d",ifmd+1);
 149     ppcon[0]=0;
 150     ppcon[1]=360;
 151     ppcon[2]=4;
 152
 153     ppcon[3]=-wideSupport;
 154     ppcon[4]=rin[ifmd]-0.1;
 155     ppcon[5]=rout[ifmd]+0.1;
 156
 157     ppcon[6]=ppcon[3]+2*zSi+2*zPCB+2*NylonTube[2];
 158     ppcon[7]=rin[ifmd]-0.1;
 159     ppcon[8]=rout[ifmd]+0.1;
 160
 161     ppcon[9]=ppcon[6];
 162     ppcon[10]=RinHoneyComb[ifmd]-0.1;
 163     ppcon[11]=RoutHoneyComb[ifmd]+0.1;
 164
 165     ppcon[12]=ppcon[9]+2*zHoneyComb+zPCB;
 166     ppcon[13]=RinHoneyComb[ifmd]-0.1;
 167     ppcon[14]=RoutHoneyComb[ifmd]+0.1;
 168     gMC->Gsvolu(nameFMD,"PCON",idtmed[0],ppcon,15);
 169     if (z[ifmd] >0){
 170       zFMD=z[ifmd]+wideSupport;
 171       gMC->Gspos(nameFMD,1,"ALIC",0,0,zFMD,0, "ONLY");}
 172     else {
 173       zFMD=z[ifmd]-wideSupport;
 174       gMC->Gspos(nameFMD,1,"ALIC",0,0,zFMD,idrotm[901], "ONLY");}
 175
 176     //silicon
 177     sprintf(nameSi,"GSI%d",ifmd+1);
 178     sprintf(nameSector,"GSC%d",ifmd+1);
 179     sprintf(nameRing,"GRN%d",ifmd+1);
 180
 181     //honeycomb support
 182     sprintf(nameHoney,"GSU%d",ifmd+1);
 183     gMC->Gsvolu(nameHoney,"TUBE", idtmed[0], par, 0);  //honeycomb
 184     sprintf(nameHoneyIn,"GHI%d",ifmd+1);
 185     gMC->Gsvolu(nameHoneyIn,"TUBE", idtmed[7], par, 0);  //honey comb inside
 186     sprintf(nameHoneyOut,"GHO%d",ifmd+1);
 187     gMC->Gsvolu(nameHoneyOut,"TUBE", idtmed[6], par, 0);  //honey comb skin
 188
 189     //PCB
 190     sprintf(namePCB,"GPC%d",ifmd+1);
 191     gMC->Gsvolu(namePCB,"TUBE", idtmed[0], par, 0); //PCB
 192     sprintf(nameCopper,"GCO%d",ifmd+1);
 193     gMC->Gsvolu(nameCopper,"TUBE", idtmed[3], par, 0);  // Cooper
 194     sprintf(nameChips,"GCH%d",ifmd+1);
 195     gMC->Gsvolu(nameChips,"TUBE", idtmed[5], par, 0); // Si chips
 196     sprintf(nameG10,"G10%d",ifmd+1);
 197     gMC->Gsvolu(nameG10,"TUBE", idtmed[2], par, 0);  //G10 plate
 198
 199     //last PCB
 200     sprintf(nameLPCB,"GPL%d",ifmd+1);
 201     gMC->Gsvolu(nameLPCB,"TUBE", idtmed[0], par, 0); //PCB
 202     sprintf(nameLCopper,"GCL%d",ifmd+1);
 203     gMC->Gsvolu(nameLCopper,"TUBE", idtmed[3], par, 0);  // Cooper
 204     sprintf(nameLChips,"GHL%d",ifmd+1);
 205     gMC->Gsvolu(nameLChips,"TUBE", idtmed[5], par, 0); // Si chips
 206     sprintf(nameGL10,"G1L%d",ifmd+1);
 207     gMC->Gsvolu(nameGL10,"TUBE", idtmed[2], par, 0); // Last G10
 208     par[0]=rin[ifmd]; // pipe size
 209     par[1]=rout[ifmd];
 210     par[2]=zSi/2;
 211     gMC->Gsvolu(nameSi,"TUBE", idtmed[4], par, 3);
 212     zInside=ppcon[3]+par[2];
 213     gMC->Gspos(nameSi,ifmd+1,nameFMD,0,0,zInside,0, "ONLY");
 214
 215     //PCB 1
 216     zInside += par[2]+zPCB/2;
 217     par[2]=zPCB/2;
 218     gMC->Gsposp(namePCB,1,nameFMD,0,0,zInside,0, "ONLY",par,3);
 219     zInside += zPCB;
 220     gMC->Gsposp(namePCB,2,nameFMD,0,0,zInside,0, "ONLY",par,3);
 221     Float_t NulonTubeBegin=zInside+2.5*zPCB;
 222     par[2]=zPCB/2-0.02;
 223     Float_t zInPCB = -zPCB/2+par[2];
 224     gMC->Gsposp(nameG10,1,namePCB,0,0,zInPCB,0, "ONLY",par,3);
 225     zInPCB+=par[2]+zCooper/2 ;
 226     par[2]=zCooper/2;
 227     gMC->Gsposp(nameCopper,1,namePCB,0,0,zInPCB,0, "ONLY",par,3);
 228     zInPCB += zCooper/2 + zChips/2;
 229     par[2]=zChips/2;
 230     gMC->Gsposp(nameChips,1,namePCB,0,0,zInPCB,0, "ONLY",par,3);
 231
 232     //HoneyComb
 233     zHoneyComb=0.8;
 234     par[0] = RinHoneyComb[ifmd];
 235     par[1] = RoutHoneyComb[ifmd];
 236     par[2] = zHoneyComb/2;
 237     zInside += 2*NylonTube[2]+par[2];
 238     gMC->Gsposp(nameHoney,1,nameFMD,0,0,zInside,0, "ONLY",par,3);
 239     par[2]=0.1/2;
 240     Float_t zHoney=-zHoneyComb/2+par[2];
 241     gMC->Gsposp(nameHoneyOut,1,nameHoney,0,0,zHoney,0,
 242                 "ONLY",par,3); //shkurki
 243     zHoney=zHoneyComb/2-par[2];
 244     gMC->Gsposp(nameHoneyOut,2,nameHoney,0,0,zHoney,0, "ONLY",par,3);
 245     par[2]=(zHoneyComb-2.*0.1)/2; //soty vnutri
 246     gMC->Gsposp(nameHoneyIn,1,nameHoney,0,0,0,0, "ONLY",par,3);
 247
 248     gMC->Gspos("GNYL",1,nameFMD,0,yNylonTube[ifmd],
 249                NulonTubeBegin+NylonTube[2]/2.,0, "ONLY");
 250     gMC->Gspos("GNYL",2,nameFMD,0,-yNylonTube[ifmd],
 251                NulonTubeBegin+NylonTube[2]/2.,0, "ONLY");
 252
 253     //last PCB
 254     par[0]=RoutHoneyComb[ifmd]-9;
 255     par[1]=RoutHoneyComb[ifmd];
 256     par[2]=zPCB/2;
 257     zInside += zHoneyComb/2+par[2];
 258     gMC->Gsposp(nameLPCB,1,nameFMD,0,0,zInside,0, "ONLY",par,3);
 259
 260     par[2]=zPCB/2-0.02;
 261     zInPCB = -zPCB/2+par[2];
 262     gMC->Gsposp(nameGL10,1,nameLPCB,0,0,zInPCB,0, "ONLY",par,3);
 263     zInPCB+=par[2]+zCooper/2 ;
 264     par[2]=zCooper/2;
 265     gMC->Gsposp(nameLCopper,1,nameLPCB,0,0,zInPCB,0, "ONLY",par,3);
 266     zInPCB += zCooper/2 + zChips/2;
 267     par[2]=zChips/2;
 268     gMC->Gsposp(nameLChips,1,nameLPCB,0,0,zInPCB,0, "ONLY",par,3);
 269
 270
 271     //Granularity
 272     fSectorsSi1 = 20;
 273     fRingsSi1   = 256 * 2;
 274     //  fRingsSi1=3; // for drawing only
 275     fSectorsSi2 = 40;
 276     fRingsSi2   = 128 * 2;
 277     //   fRingsSi2=3; //for  drawing onl
 278     if(ifmd==1||ifmd==3) {
 279       gMC->Gsdvn(nameSector, nameSi , fSectorsSi2, 2);
 280       gMC->Gsdvn(nameRing, nameSector, fRingsSi2, 1);
 281     }
 282     else {
 283       gMC->Gsdvn(nameSector, nameSi , fSectorsSi1, 2);
 284       gMC->Gsdvn(nameRing, nameSector , fRingsSi1, 1);
 285     }
 286   }
 287 }
 288
 289
 290 //------------------------------------------------------------------------
 291 void
 292 AliFMDAlla::CreateMaterials()
 293 {
 294   Int_t isxfld   = gAlice->Field()->Integ();
 295   Float_t sxmgmx = gAlice->Field()->Max();
 296
 297   // Plastic CH
 298   Float_t aPlastic[2]={1.01,12.01};
 299   Float_t zPlastic[2]={1,6};
 300   Float_t wPlastic[2]={1,1};
 301   Float_t denPlastic=1.03;
 302   //
 303   //     60% SiO2 , 40% G10FR4
 304   // PC board
 305   Float_t apcb[3]  = { 28.0855,15.9994,17.749 };
 306   Float_t zpcb[3]  = { 14.,8.,8.875 };
 307   Float_t wpcb[3]  = { .28,.32,.4 };
 308   Float_t denspcb  = 1.8;
 309   //
 310   // AIR
 311   Float_t aAir[4]  = {12.0107,14.0067,15.9994,39.948};
 312   Float_t zAir[4]  = {6.,7.,8.,18.};
 313   Float_t wAir[4]  = {0.000124,0.755267,0.231781,0.012827};
 314   Float_t dAir     = 1.20479E-3;
 315   //*** Definition Of avaible FMD materials ***
 316   AliMixture(0, "FMD Air$", aAir, zAir, dAir, 4,wAir);
 317   AliMixture(1, "Plastic$",aPlastic,zPlastic,denPlastic,-2,wPlastic);
 318   AliMixture(2, "SSD PCB$",   apcb, zpcb, denspcb, 3, wpcb);
 319   AliMaterial(3, "SSD Copper$", 63.546, 29., 8.96, 1.43, 999.);
 320   AliMaterial(4, "SSD Si$",      28.0855, 14., 2.33, 9.36, 999.);
 321   AliMaterial(5, "SSD Si chip$", 28.0855, 14., 2.33, 9.36, 999.);
 322   AliMaterial(6, "SSD C$",       12.011,   6., 2.265,18.8, 999.);
 323   AliMaterial(7, "SSD Kapton$", 12.011, 6., 0.01, 31.27, 999.);//honeycomb
 324   AliMaterial(8, "SSD G10FR4$", 17.749, 8.875, 1.8, 21.822, 999.);
 325
 326
 327   //**
 328   AliMedium(0, "FMD air$", 0, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
 329   AliMedium(1, "Plastic$", 1, 0,isxfld, sxmgmx,  10., .01, 1., .003, .003);
 330   AliMedium(2, "SSD PCB$", 2, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
 331   AliMedium(3, "SSD Copper$", 3, 0,isxfld, sxmgmx,  10., .01, 1., .003, .003);
 332   AliMedium(4, "SSD Si$", 4, 1, isxfld, sxmgmx, 1., .001, 1., .001, .001);
 333   AliMedium(5, "SSD Si chip$", 5, 0,isxfld, sxmgmx,  10., .01, 1., .003, .003);
 334   AliMedium(6, "SSD C$", 6, 0,isxfld, sxmgmx,  10., .01, 1., .003, .003);
 335   AliMedium(7, "SSD Kapton$", 7, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
 336   AliMedium(8, "SSD G10FR4$", 8, 0,isxfld, sxmgmx,  10., .01, 1., .003, .003);
 337
 338
 339
 340 }
 341 //---------------------------------------------------------------------
 342 void
 343 AliFMDAlla::DrawDetector()
 344 {
 345   //
 346   // Draw a shaded view of the Forward multiplicity detector version 0
 347   //
 348
 349   //Set ALIC mother transparent
 350   gMC->Gsatt("ALIC","SEEN",0);
 351   //
 352   //Set volumes visible
 353   gMC->Gsatt("FMD1","SEEN",1);
 354   gMC->Gsatt("FMD2","SEEN",1);
 355   gMC->Gsatt("FMD3","SEEN",1);
 356   gMC->Gsatt("FMD4","SEEN",1);
 357   gMC->Gsatt("FMD5","SEEN",1);
 358
 359   //
 360   gMC->Gdopt("hide","on");
 361   gMC->Gdopt("shad","on");
 362   gMC->SetClipBox(".");
 363   gMC->SetClipBox("*",0,1000,-1000,1000,-1000,1000);
 364   gMC->DefaultRange();
 365   gMC->Gdraw("alic",40,30,0,12,9.5,.2,0.2);
 366   gMC->Gdhead(1111,"Forward multiplicity detector");
 367   gMC->Gdopt("hide","off");
 368 }
 369 //-------------------------------------------------------------------
 370 void
 371 AliFMDAlla::Init()
 372 {
 373   // Initialises version 0 of the Forward Multiplicity Detector
 374   //
 375   AliFMD::Init();
 376   fIdSens1=gMC->VolId("GRN1");
 377   fIdSens2=gMC->VolId("GRN2");
 378   fIdSens3=gMC->VolId("GRN3");
 379   fIdSens4=gMC->VolId("GRN4");
 380   fIdSens5=gMC->VolId("GRN5");
 381   printf("*** FMD version 1 initialized ***\n");
 382 }
 383
 384 //-------------------------------------------------------------------
 385 void
 386 AliFMDAlla::StepManager()
 387 {
 388   //
 389   // Called for every step in the Forward Multiplicity Detector
 390   //
 391   Int_t id,copy,copy1,copy2;
 392   static Float_t hits[9];
 393   static Int_t vol[3];
 394   static Float_t de;
 395   static TLorentzVector pos;
 396   static TLorentzVector mom;
 397   static Int_t iPart;
 398
 399   TClonesArray &lhits = *fHits;
 400   if(!gMC->IsTrackAlive()) return; // particle has disappeared
 401
 402   Float_t charge = gMC->TrackCharge();
 403   if(TMath::Abs(charge)<=0.) return; //take only charged particles
 404
 405   //  printf(" in StepManeger \n");
 406   id=gMC->CurrentVolID(copy);
 407   //((TGeant3*)gMC)->Gpcxyz();
 408
 409   // Check the sensetive volume
 410   if(id==fIdSens1||id==fIdSens2||id==fIdSens3||id==fIdSens4||id==fIdSens5) {
 411
 412     if(gMC->IsTrackEntering())  {
 413       vol[2]=copy-1;
 414       gMC->CurrentVolOffID(1,copy1);
 415       vol[1]=copy1;
 416       gMC->CurrentVolOffID(2,copy2);
 417       vol[0]=copy2;
 418
 419       gMC->TrackPosition(pos);
 420       hits[0]=pos[0];
 421       hits[1]=pos[1];
 422       hits[2]=pos[2];
 423
 424       gMC->TrackMomentum(mom);
 425       hits[3]=mom[0];
 426       hits[4]=mom[1];
 427       hits[5]=mom[2];
 428
 429       iPart= gMC->TrackPid();
 430       Int_t partId=gMC->IdFromPDG(iPart);
 431       hits[7]=partId;
 432       hits[8]=1e9*gMC->TrackTime();
 433       de=0.;
 434     }
 435     Float_t edep = 1000 * gMC->Edep();
 436     Float_t p    = mom.P();
 437     TParticlePDG* pdg = TDatabasePDG::Instance()->GetParticle(iPart);
 438     Float_t mass = pdg ? pdg->Mass() : 1;
 439     if (edep > 1 && p/mass > 1) {
 440       TArrayI procs;
 441       gMC->StepProcesses(procs);
 442       TString processes;
 443       for (Int_t ip = 0; ip < procs.fN; ip++) {
 444         if (ip != 0) processes.Append(",");
 445         processes.Append(TMCProcessName[procs.fArray[ip]]);
 446       }
 447       TString what;
 448       if (gMC->IsTrackEntering())    what.Append("entering ");
 449       if (gMC->IsTrackExiting())     what.Append("exiting ");
 450       if (gMC->IsTrackInside())      what.Append("inside ");
 451       if (gMC->IsTrackDisappeared()) what.Append("disappeared ");
 452       if (gMC->IsTrackStop())        what.Append("stopped ");
 453       if (gMC->IsNewTrack())         what.Append("new ");
 454       if (gMC->IsTrackAlive())       what.Append("alive ");
 455       if (gMC->IsTrackOut())         what.Append("out ");
 456       Int_t trackno = gAlice->GetMCApp()->GetCurrentTrackNumber();
 457       Int_t mother  = gAlice->GetMCApp()->GetPrimary(trackno);
 458       Warning("StepManager", "Track # %5d deposits a lot of energy\n"
 459               "  Volume:    %s\n"
 460               "  Momentum:  (%7.4f,%7.4f,%7.4f)\n"
 461               "  PDG:       %d (%s)\n"
 462               "  Edep:      %-14.7f keV (mother %d)\n"
 463               "  p/m:       %-7.4f/%-7.4f = %-14.7f\n"
 464               "  Processes: %s\n"
 465               "  What:      %s\n",
 466               trackno, gMC->CurrentVolPath(), mom.X(), mom.Y(), mom.Z(),
 467               iPart, (pdg ? pdg->GetName() : ""), edep, mother, mom.P(), mass,
 468               mom.P()/mass, processes.Data(), what.Data());
 469     }
 470
 471     if(gMC->IsTrackInside()) de=de+1000.*gMC->Edep();
 472
 473     if(gMC->IsTrackExiting() ||gMC->IsTrackDisappeared()|| gMC->IsTrackStop()){
 474       hits[6]=de+1000.*gMC->Edep();
 475       UShort_t detector = vol[0] / 2 + 1;
 476       Char_t   ring     = (vol[0] % 2) == 0 ? 'I' : 'O';
 477       UShort_t sector   = vol[1];
 478       UShort_t strip    = vol[2];
 479       gMC->TrackPosition(pos);
 480       TVector3 cur(pos.Vect());
 481       TVector3 old(hits[0], hits[1], hits[2]);
 482       cur -= old;
 483       Double_t len = cur.Mag();
 484       AliFMDHit* h = new(lhits[fNhits++])
 485         AliFMDHit(fIshunt,
 486                   gAlice->GetMCApp()->GetCurrentTrackNumber(),
 487                   detector, ring, sector, strip,
 488                   hits[0], hits[1], hits[2], hits[3], hits[4], hits[5],
 489                   hits[6], iPart, hits[8], len,
 490                   gMC->IsTrackDisappeared()||gMC->IsTrackStop());
 491       if (hits[6] > 1 && p/mass > 1) fBad->Add(h);
 492     } // IsTrackExiting()
 493   }
 494 }
 495 //--------------------------------------------------------------------------
 496 void
 497 AliFMDAlla::Response(Float_t Edep)
 498 {
 499   Float_t I=1.664*0.04*2.33/22400; // = 0.69e-6;
 500   Float_t chargeOnly=Edep/I;
 501   //Add noise ~500electrons
 502   Int_t charge=500;
 503   if (Edep>0)
 504     charge=Int_t(gRandom->Gaus(chargeOnly,500));
 505 }
 506
 507 //____________________________________________________________________
 508 AliDigitizer*
 509 AliFMDAlla::CreateDigitizer(AliRunDigitizer* manager) const
 510 {
 511   // Create a digitizer object
 512   AliFMDDigitizerAlla* digitizer = new AliFMDDigitizerAlla(manager);
 513   return digitizer;
 514 }
 515 //--------------------------------------------------------------------------
 516 //
 517 // EOF
 518 //
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