HMPID/AliHMPIDParam.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 #include "AliHMPIDParam.h"  //class header
  16 #include "AliHMPIDDigit.h"  //ctor
  17 #include <TCanvas.h>       //TestXXX()
  18 #include <TLatex.h>        //TestTrans()
  19 #include <TView.h>         //TestTrans()
  20 #include <TPolyMarker3D.h> //TestTrans()
  21 #include <TRotation.h>
  22 #include <AliRunLoader.h>  //Stack()
  23 #include <AliStack.h>      //Stack()
  24 #include <TParticle.h>     //Stack()
  25 #include <TGeoPhysicalNode.h> //ctor
  26 #include <TGeoBBox.h>
  27 ClassImp(AliHMPIDParam)
  28
  29
  30 Float_t AliHMPIDParam::fgkMinPcX[]={0.,0.,0.,0.,0.,0.};
  31 Float_t AliHMPIDParam::fgkMaxPcX[]={0.,0.,0.,0.,0.,0.};
  32 Float_t AliHMPIDParam::fgkMinPcY[]={0.,0.,0.,0.,0.,0.};
  33 Float_t AliHMPIDParam::fgkMaxPcY[]={0.,0.,0.,0.,0.,0.};
  34
  35 Float_t AliHMPIDParam::fgCellX=0.;
  36 Float_t AliHMPIDParam::fgCellY=0.;
  37
  38 Float_t AliHMPIDParam::fgPcX=0;
  39 Float_t AliHMPIDParam::fgPcY=0;
  40
  41 Float_t AliHMPIDParam::fgAllX=0;
  42 Float_t AliHMPIDParam::fgAllY=0;
  43
  44 Int_t AliHMPIDParam::fgSigmas=4;
  45
  46 AliHMPIDParam* AliHMPIDParam::fgInstance=0x0;        //singleton pointer
  47 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  48 AliHMPIDParam::AliHMPIDParam():TNamed("HmpidParam","default version")
  49 {
  50 // Here all the intitializition is taken place when AliHMPIDParam::Instance() is invoked for the first time.
  51 // In particulare, matrices to be used for LORS<->MARS trasnformations are initialized from TGeo structure.
  52 // Note that TGeoManager should be already initialized from geometry.root file
  53
  54 if(!gGeoManager)
  55 {
  56 TGeoManager::Import("misaligned_geometry.root");
  57 if(!gGeoManager) AliFatal("!!!!!!No geometry loaded!!!!!!!");
  58 }
  59
  60
  61     Float_t Dead=2.6;// cm of the dead zones between PCs-> See 2CRC2099P1
  62     TGeoBBox *bcell = (TGeoBBox *)gGeoManager->GetVolume("Hcel")->GetShape();
  63     fgCellX=2.*bcell->GetDX(); fgCellY = 2.*bcell->GetDY();
  64     fgPcX=80.*fgCellX; fgPcY = 48.*fgCellY;
  65     fgAllX=2.*fgPcX+Dead;
  66     fgAllY=3.*fgPcY+2.*Dead;
  67
  68      fgkMinPcX[1]=fgPcX+Dead; fgkMinPcX[3]=fgkMinPcX[1];  fgkMinPcX[5]=fgkMinPcX[3];
  69      fgkMaxPcX[0]=fgPcX; fgkMaxPcX[2]=fgkMaxPcX[0];  fgkMaxPcX[4]=fgkMaxPcX[2];
  70      fgkMaxPcX[1]=fgAllX; fgkMaxPcX[3]=fgkMaxPcX[1];  fgkMaxPcX[5]=fgkMaxPcX[3];
  71
  72      fgkMinPcY[2]=fgPcY+Dead; fgkMinPcY[3]=fgkMinPcY[2];
  73      fgkMinPcY[4]=2.*fgPcY+2.*Dead; fgkMinPcY[5]=fgkMinPcY[4];
  74      fgkMaxPcY[0]=fgPcY; fgkMaxPcY[1]=fgkMaxPcY[0];
  75      fgkMaxPcY[2]=2.*fgPcY+Dead; fgkMaxPcY[3]=fgkMaxPcY[2];
  76      fgkMaxPcY[4]=fgAllY; fgkMaxPcY[5]=fgkMaxPcY[4];
  77
  78   fX=0.5*SizeAllX();
  79   fY=0.5*SizeAllY();
  80   for(Int_t i=kMinCh;i<=kMaxCh;i++)
  81     if(gGeoManager && gGeoManager->IsClosed()) {
  82 //      fM[i]=(TGeoHMatrix*)gGeoManager->GetVolume("ALIC")->GetNode(Form("HMPID_%i",i))->GetMatrix(); // previous style
  83       TGeoPNEntry* pne = gGeoManager->GetAlignableEntry(Form("/HMPID/Chamber%i",i));
  84       if (!pne) {
  85         AliErrorClass(Form("The symbolic volume %s does not correspond to any physical entry!",Form("HMPID_%i",i)));
  86         fM[i]=new TGeoHMatrix;
  87         IdealPosition(i,fM[i]);
  88       } else {
  89         TGeoPhysicalNode *pnode = pne->GetPhysicalNode();
  90         if(pnode) fM[i]=pnode->GetMatrix();
  91         else {
  92           fM[i]=new TGeoHMatrix;
  93           IdealPosition(i,fM[i]);
  94         }
  95       }
  96     } else{
  97       fM[i]=new TGeoHMatrix;
  98       IdealPosition(i,fM[i]);
  99     }
 100   fgInstance=this;
 101 }//ctor
 102 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 103 void AliHMPIDParam::Print(Option_t* opt) const
 104 {
 105 // print some usefull (hopefully) info on some internal guts of HMPID parametrisation
 106
 107   for(Int_t i=0;i<7;i++) fM[i]->Print(opt);
 108 }//Print()
 109 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 110 void AliHMPIDParam::IdealPosition(Int_t iCh, TGeoHMatrix *pMatrix)
 111 {
 112 // Construct ideal position matrix for a given chamber
 113 // Arguments: iCh- chamber ID; pMatrix- pointer to precreated unity matrix where to store the results
 114 //   Returns: none
 115   const Double_t kAngHor=19.5;        //  horizontal angle between chambers  19.5 grad
 116   const Double_t kAngVer=20;          //  vertical angle between chambers    20   grad
 117   const Double_t kAngCom=30;          //  common HMPID rotation with respect to x axis  30   grad
 118   const Double_t kTrans[3]={490,0,0}; //  center of the chamber is on window-gap surface
 119   pMatrix->RotateY(90);               //  rotate around y since initial position is in XY plane -> now in YZ plane
 120   pMatrix->SetTranslation(kTrans);    //  now plane in YZ is shifted along x
 121   switch(iCh){
 122     case 0:                pMatrix->RotateY(kAngHor);  pMatrix->RotateZ(-kAngVer);  break; //right and down
 123     case 1:                                            pMatrix->RotateZ(-kAngVer);  break; //down
 124     case 2:                pMatrix->RotateY(kAngHor);                               break; //right
 125     case 3:                                                                         break; //no rotation
 126     case 4:                pMatrix->RotateY(-kAngHor);                              break; //left
 127     case 5:                                            pMatrix->RotateZ(kAngVer);   break; //up
 128     case 6:                pMatrix->RotateY(-kAngHor); pMatrix->RotateZ(kAngVer);   break; //left and up
 129   }
 130   pMatrix->RotateZ(kAngCom);     //apply common rotation  in XY plane
 131
 132 }
 133 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 134 Int_t AliHMPIDParam::Stack(Int_t evt,Int_t tid)
 135 {
 136 // Prints some useful info from stack
 137 // Arguments: evt - event number. if not -1 print info only for that event
 138 //            tid - track id. if not -1 then print it and all it's mothers if any
 139 //   Returns: mother tid of the given tid if any
 140   AliRunLoader *pAL=AliRunLoader::Open();
 141   if(pAL->LoadHeader()) return -1;
 142   if(pAL->LoadKinematics()) return -1;
 143
 144   Int_t mtid=-1;
 145   Int_t iNevt=pAL->GetNumberOfEvents();
 146
 147   for(Int_t iEvt=0;iEvt<iNevt;iEvt++){//events loop
 148     if(evt!=-1 && evt!=iEvt) continue; //in case one needs to print the requested event, ignore all others
 149     pAL->GetEvent(iEvt);
 150     AliStack *pStack=pAL->Stack();
 151     if(tid==-1){                        //print all tids for this event
 152       for(Int_t i=0;i<pStack->GetNtrack();i++) pStack->Particle(i)->Print();
 153       Printf("totally %i tracks including %i primaries for event %i out of %i event(s)",pStack->GetNtrack(),pStack->GetNprimary(),iEvt,iNevt);
 154     }else{                              //print only this tid and it;s mothers
 155       if(tid<0 || tid>pStack->GetNtrack()) {Printf("Wrong tid, valid tid range for event %i is 0-%i",iEvt,pStack->GetNtrack());break;}
 156       TParticle *pTrack=pStack->Particle(tid); mtid=pTrack->GetFirstMother();
 157       TString str=pTrack->GetName();
 158       while((tid=pTrack->GetFirstMother()) >= 0){
 159         pTrack=pStack->Particle(tid);
 160         str+=" from ";str+=pTrack->GetName();
 161       }
 162     }//if(tid==-1)
 163   }//events loop
 164   pAL->UnloadHeader();  pAL->UnloadKinematics();
 165   return mtid;
 166 }
 167 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 168 Int_t AliHMPIDParam::StackCount(Int_t pid,Int_t evt)
 169 {
 170 // Counts total number of particles of given sort (including secondary) for a given event
 171   AliRunLoader *pAL=AliRunLoader::Open();
 172   pAL->GetEvent(evt);
 173   if(pAL->LoadHeader()) return 0;
 174   if(pAL->LoadKinematics()) return 0;
 175   AliStack *pStack=pAL->Stack();
 176
 177   Int_t iCnt=0;
 178   for(Int_t i=0;i<pStack->GetNtrack();i++) if(pStack->Particle(i)->GetPdgCode()==pid) iCnt++;
 179
 180   pAL->UnloadHeader();  pAL->UnloadKinematics();
 181   return iCnt;
 182 }
 183 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++