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[u/mrichter/AliRoot.git] / RICH / AliRICHParam.cxx
index 4145510e3bafc9986cca032a830e24c635d8d81c..7b140efcdb7dbb2ad1d8cd20008f9d3def82d5dc 100644 (file)
 //  * about the suitability of this software for any purpose. It is          *
 //  * provided "as is" without express or implied warranty.                  *
 //  **************************************************************************
-#include "AliRICHParam.h"
-#include "AliRICHChamber.h"
-#include "AliRICHDisplFast.h"
-#include <TCanvas.h>
-#include <TLatex.h>
-#include <THStack.h>
-#include <TLegend.h>
-#include <TView.h>
-#include <TPolyMarker3D.h>
-#include <TPolyLine3D.h>
+#include "AliRICHParam.h"  //class header
+#include "AliRICHDigit.h"  //ctor
+#include <TCanvas.h>       //TestXXX() 
+#include <TLatex.h>        //TestTrans()  
+#include <TView.h>         //TestTrans()
+#include <TPolyMarker3D.h> //TestTrans()
+#include <TRotation.h>
+#include <AliRunLoader.h>  //Stack()
+#include <AliStack.h>      //Stack()
+#include <TParticle.h>     //Stack()    
+#include "AliRICHHelix.h"  //TestTrans()
 
 ClassImp(AliRICHParam)
-Bool_t   AliRICHParam::fgIsWireSag            =kTRUE;   //take ware sagita into account?
-Bool_t   AliRICHParam::fgIsResolveClusters    =kTRUE;   //do cluster resolving?
-Bool_t   AliRICHParam::fgIsRadioSrc           =kFALSE;  //put radioactive source instead of radiators?
-Bool_t   AliRICHParam::fgIsAerogel            =kFALSE;  //special aerogel configuration
-Bool_t   AliRICHParam::fgIsTestBeam           =kFALSE;  //special test beam configuration
 
-Int_t    AliRICHParam::fgHV[kNsectors]        ={2050,2050,2050,2050,2050,2050};
-Int_t    AliRICHParam::fgNsigmaTh             =4;
-Float_t  AliRICHParam::fgSigmaThMean          =1.132; //QDC 
-Float_t  AliRICHParam::fgSigmaThSpread        =0.035; //     
-
-//__________________________________________________________________________________________________
-void AliRICHParam::Print(Option_t*)
-{
-  AliInfo(Form("Pads in chamber (%3i,%3i) in sector (%2i,%2i)",NpadsX(),NpadsY(),NpadsXsec(),NpadsYsec()));
-  AliInfo(Form("Resolve clusters %i sagita %i Radio source %i Aerogel %i TestBeam %i",
-                IsResolveClusters(),IsWireSag(),IsRadioSrc(),IsAerogel(),IsTestBeam())); 
-  fpChambers->Print();
-}//Print()
-//__________________________________________________________________________________________________
-void AliRICHParam::CreateChambers()
+AliRICHParam* AliRICHParam::fgInstance=0x0;        //singleton pointer               
+//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+AliRICHParam::AliRICHParam():TNamed("RichParam","default version") 
 {
-//Create all RICH Chambers on each call. Previous chambers deleted.
-  if(fpChambers) delete fpChambers;
-  if(fgIsTestBeam){ 
-    fpChambers=new TObjArray(1);//test beam configuration 1 chamber
-    fpChambers->AddAt(new AliRICHChamber(0),0);  
-  }else{ 
-    fpChambers=new TObjArray(kNchambers);//normal configuration 7 chambers
-    for(int iChamberN=0;iChamberN<kNchambers;iChamberN++)  fpChambers->AddAt(new AliRICHChamber(iChamberN+1),iChamberN);  
-  }
-  fpChambers->SetOwner();
-}//CreateChambers()
-//__________________________________________________________________________________________________
-Float_t AliRICHParam::AbsCH4(Float_t eV)
+// Here all the intitializition is taken place when AliRICHParam::Instance() is invoked for the first time.
+// In particulare, matrices to be used for LORS<->MARS trasnformations are initialized from TGeo structure.    
+// Note that TGeoManager should be already initialized from geometry.root file  
+  fX=0.5*AliRICHDigit::SizeAllX();
+  fY=0.5*AliRICHDigit::SizeAllY();
+  for(Int_t i=0;i<7;i++) fM[i]=(TGeoHMatrix*)gGeoManager->GetVolume("ALIC")->GetNode(Form("RICH_%i",i))->GetMatrix();
+  fgInstance=this; 
+}//ctor
+//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+void AliRICHParam::Print(Option_t* opt) const
 {
-//Evaluate the absorbtion lenght of CH4 for a photon of energy eV in electron-volts
-  const Float_t kLoschmidt=2.686763e19;                                      // LOSCHMIDT NUMBER IN CM-3
-  const Float_t kPressure=750.0;          //mm of Hg
-  const Float_t kTemperature=283.0;       //K (10 grad C)                               
-  const Float_t kPn=kPressure/760.;
-  const Float_t kTn=kTemperature/273.16;
-  const Float_t kC0=-1.655279e-1;
-  const Float_t kC1= 6.307392e-2;
-  const Float_t kC2=-8.011441e-3;
-  const Float_t kC3= 3.392126e-4;
-               
-  Float_t crossSection=0;                        
-  if (eV<7.75) 
-    crossSection=0.06e-22;
-  else                 //------ METHANE CROSS SECTION cm-2 ASTROPH. J. 214, L47 (1978)                                               
-    crossSection=(kC0+kC1*eV+kC2*eV*eV+kC3*eV*eV*eV)*1.e-18;
-    
-    Float_t density=kLoschmidt*kPn/kTn; //CH4 molecular concentration (cm^-3)
-    return 1.0/(density*crossSection);
-}//AbsoCH4()
-//__________________________________________________________________________________________________
-void AliRICHParam::TestSeg()
-{
-  
-  new TCanvas("name","PC segmentation");
-  gPad->Range(-20,-20,200,150);
-  AliRICHDisplFast::DrawSectors();
-  
-  TLatex t; t.SetTextSize(0.02);
-  t.DrawText(0,140,"View from interaction point");
-  t.DrawLatex(PcSizeX()+10,120,Form("Pc  %6.2fx%6.2fcm %3ix%3ipads",PcSizeX()    ,PcSizeY(),    NpadsX()   ,NpadsY()));
-  t.DrawLatex(PcSizeX()+10,115,Form("Sec %6.2fx%5.2fcm %3ix%2ipads",SectorSizeX(),SectorSizeY(),NpadsXsec(),NpadsYsec()));
-  t.DrawLatex(PcSizeX()+10,110,Form("Pad %6.2fx%4.2fcm DeadZone %6.2fcm",PadSizeX()   ,PadSizeY(),DeadZone()));
+// print some usefull (hopefully) info on some internal guts of RICH parametrisation 
   
-  TVector2 v2;
-  t.SetTextAlign(12);
-  v2=AliRICHParam::Pad2Loc( 1,24);  t.DrawText(v2.X(),v2.Y(),"sec 1");  
-  v2=AliRICHParam::Pad2Loc(81,24);  t.DrawText(v2.X(),v2.Y(),"sec 2");  
-  v2=AliRICHParam::Pad2Loc( 1,70);  t.DrawText(v2.X(),v2.Y(),"sec 3");  
-  v2=AliRICHParam::Pad2Loc(81,70);  t.DrawText(v2.X(),v2.Y(),"sec 4");  
-  v2=AliRICHParam::Pad2Loc( 1,120); t.DrawText(v2.X(),v2.Y(),"sec 5");  
-  v2=AliRICHParam::Pad2Loc(81,120); t.DrawText(v2.X(),v2.Y(),"sec 6");  
-  
-//  TGaxis *pAx=new TGaxis(0,0,140,  0,0,140,510,"-="); pAx->SetTitle("x, cm"); pAx->SetTextSize(0.05); pAx->Draw();
-//  TGaxis *pAy=new TGaxis(0,0,  0,140,0,140,510,"-="); pAy->SetTitle("y, cm"); pAy->SetTextSize(0.05); pAy->Draw();
-   
-  
-  t.SetTextColor(kBlue);  
-
-  Double_t margin=5;
-  Double_t x0=0; Double_t x1=SectorSizeX(); Double_t x2=SectorSizeX()+DeadZone(); Double_t x3=PcSizeX();
-  Double_t y0=0; Double_t y1=SectorSizeY(); Double_t y2=SectorSizeY()+DeadZone(); 
-  Double_t y3=2*SectorSizeY()+DeadZone(); Double_t y4=PcSizeY()-SectorSizeY();
-  Double_t y5=PcSizeY();
-   
-//write pad numbers along x  
-  t.SetTextAlign(13); t.DrawText(x0,y0,"1");  
-  t.SetTextAlign(33); t.DrawText(x1,y0,"80");
-  t.SetTextAlign(13); t.DrawText(x2,y0,"81");   
-  t.SetTextAlign(33); t.DrawText(x3,y0,"160");
-//write pad numbers along y    
-  t.SetTextAlign(31); t.DrawText(x0,y0,"1");  
-  t.SetTextAlign(33); t.DrawText(x0,y1,"48"); 
-  t.SetTextAlign(31); t.DrawText(x0,y2,"49");
-  t.SetTextAlign(33); t.DrawText(x0,y3,"96"); 
-  t.SetTextAlign(31); t.DrawText(x0,y4,"97");
-  t.SetTextAlign(33); t.DrawText(x0,y5,"144");        
-  
-   
-//positions along x   
-  t.SetTextColor(kGreen);
-  t.SetTextAlign(11);t.DrawText(x0,y0-margin,Form("%5.2f",x0));   
-  t.SetTextAlign(31);t.DrawText(x1,y0-margin,Form("%5.2f",x1));   
-  t.SetTextAlign(11);t.DrawText(x2,y0-margin,Form("%5.2f",x2));   
-  t.SetTextAlign(31);t.DrawText(x3,y0-margin,Form("%5.2f",x3));   
-//positions along y
-  t.SetTextAlign(31);t.DrawText(x0-margin,y0,Form("%5.2f",y0));   
-  t.SetTextAlign(33);t.DrawText(x0-margin,y1,Form("%5.2f",y1));   
-  t.SetTextAlign(31);t.DrawText(x0-margin,y2,Form("%5.2f",y2));   
-  t.SetTextAlign(33);t.DrawText(x0-margin,y3,Form("%5.2f",y3));   
-  t.SetTextAlign(31);t.DrawText(x0-margin,y4,Form("%5.2f",y4));   
-  t.SetTextAlign(33);t.DrawText(x0-margin,y5,Form("%5.2f",y5));   
-//coners      
-  t.SetTextColor(kRed);
-  t.SetTextSize(0.01);
-  TVector pad(2);
-//sector 1  
-  v2=Pad2Loc(Loc2Pad(TVector2(x0,y0)));t.SetTextAlign(11);t.DrawText(v2.X(),v2.Y(),Form("%5.2f,%5.2f",v2.X(),v2.Y()));
-  v2=Pad2Loc(Loc2Pad(TVector2(x0,y1)));t.SetTextAlign(13);t.DrawText(v2.X(),v2.Y(),Form("%5.2f,%5.2f",v2.X(),v2.Y()));
-  v2=Pad2Loc(Loc2Pad(TVector2(x1,y1)));t.SetTextAlign(33);t.DrawText(v2.X(),v2.Y(),Form("%5.2f,%5.2f",v2.X(),v2.Y()));
-  v2=Pad2Loc(Loc2Pad(TVector2(x1,y0)));t.SetTextAlign(31);t.DrawText(v2.X(),v2.Y(),Form("%5.2f,%5.2f",v2.X(),v2.Y()));
-//secr 3
-  v2=Pad2Loc(Loc2Pad(TVector2(x0,y2)));t.SetTextAlign(11);t.DrawText(v2.X(),v2.Y(),Form("%5.2f,%5.2f",v2.X(),v2.Y()));
-  v2=Pad2Loc(Loc2Pad(TVector2(x0,y3)));t.SetTextAlign(13);t.DrawText(v2.X(),v2.Y(),Form("%5.2f,%5.2f",v2.X(),v2.Y()));
-  v2=Pad2Loc(Loc2Pad(TVector2(x1,y3)));t.SetTextAlign(33);t.DrawText(v2.X(),v2.Y(),Form("%5.2f,%5.2f",v2.X(),v2.Y()));
-  v2=Pad2Loc(Loc2Pad(TVector2(x1,y2)));t.SetTextAlign(31);t.DrawText(v2.X(),v2.Y(),Form("%5.2f,%5.2f",v2.X(),v2.Y()));
-//secr 5   
-  v2=Pad2Loc(Loc2Pad(TVector2(x0,y4)));t.SetTextAlign(11);t.DrawText(v2.X(),v2.Y(),Form("%5.2f,%5.2f",v2.X(),v2.Y()));
-  v2=Pad2Loc(Loc2Pad(TVector2(x0,y5)));t.SetTextAlign(13);t.DrawText(v2.X(),v2.Y(),Form("%5.2f,%5.2f",v2.X(),v2.Y()));
-  v2=Pad2Loc(Loc2Pad(TVector2(x1,y5)));t.SetTextAlign(33);t.DrawText(v2.X(),v2.Y(),Form("%5.2f,%5.2f",v2.X(),v2.Y()));
-  v2=Pad2Loc(Loc2Pad(TVector2(x1,y4)));t.SetTextAlign(31);t.DrawText(v2.X(),v2.Y(),Form("%5.2f,%5.2f",v2.X(),v2.Y()));
-
-  v2=Pad2Loc(Loc2Pad(TVector2(x2,y4)));t.SetTextAlign(11);t.DrawText(v2.X(),v2.Y(),Form("%5.2f,%5.2f",v2.X(),v2.Y()));
-  v2=Pad2Loc(Loc2Pad(TVector2(x2,y5)));t.SetTextAlign(13);t.DrawText(v2.X(),v2.Y(),Form("%5.2f,%5.2f",v2.X(),v2.Y()));
-  v2=Pad2Loc(Loc2Pad(TVector2(x3,y5)));t.SetTextAlign(33);t.DrawText(v2.X(),v2.Y(),Form("%5.2f,%5.2f",v2.X(),v2.Y()));
-  v2=Pad2Loc(Loc2Pad(TVector2(x3,y4)));t.SetTextAlign(31);t.DrawText(v2.X(),v2.Y(),Form("%5.2f,%5.2f",v2.X(),v2.Y()));
-
-  v2=Pad2Loc(Loc2Pad(TVector2(x2,y2)));t.SetTextAlign(11);t.DrawText(v2.X(),v2.Y(),Form("%5.2f,%5.2f",v2.X(),v2.Y()));
-  v2=Pad2Loc(Loc2Pad(TVector2(x2,y3)));t.SetTextAlign(13);t.DrawText(v2.X(),v2.Y(),Form("%5.2f,%5.2f",v2.X(),v2.Y()));
-  v2=Pad2Loc(Loc2Pad(TVector2(x3,y3)));t.SetTextAlign(33);t.DrawText(v2.X(),v2.Y(),Form("%5.2f,%5.2f",v2.X(),v2.Y()));
-  v2=Pad2Loc(Loc2Pad(TVector2(x3,y2)));t.SetTextAlign(31);t.DrawText(v2.X(),v2.Y(),Form("%5.2f,%5.2f",v2.X(),v2.Y()));
-
-  v2=Pad2Loc(Loc2Pad(TVector2(x2,y0)));t.SetTextAlign(11);t.DrawText(v2.X(),v2.Y(),Form("%5.2f,%5.2f",v2.X(),v2.Y()));
-  v2=Pad2Loc(Loc2Pad(TVector2(x2,y1)));t.SetTextAlign(13);t.DrawText(v2.X(),v2.Y(),Form("%5.2f,%5.2f",v2.X(),v2.Y()));
-  v2=Pad2Loc(Loc2Pad(TVector2(x3,y1)));t.SetTextAlign(33);t.DrawText(v2.X(),v2.Y(),Form("%5.2f,%5.2f",v2.X(),v2.Y()));
-  v2=Pad2Loc(Loc2Pad(TVector2(x3,y0)));t.SetTextAlign(31);t.DrawText(v2.X(),v2.Y(),Form("%5.2f,%5.2f",v2.X(),v2.Y()));
-}//TestSeg()
-//__________________________________________________________________________________________________
-void AliRICHParam::TestResp()
+  for(Int_t i=0;i<7;i++) fM[i]->Print(opt);
+}//Print()
+//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+Int_t AliRICHParam::Stack(Int_t evt,Int_t tid)
 {
-//test the response set of methodes  
-  TCanvas *pC=new TCanvas("c","Amplification test",900,800);
-  pC->Divide(1,2);
-  
-  
-  const Int_t nPoints=8;
-  THStack *pStackPhot=new THStack("StackPhot","photons");
-  THStack *pStackMip =new THStack("StackMip","mips");
-  TLegend *pLeg=new TLegend(0.6,0.2,0.9,0.5,"legend");    
-  TH1F *apHphot[nPoints];
-  TH1F *apHmip[nPoints];
+// Prints some usefull info from stack
+// Arguments: evt - event number. if not -1 print info only for that event
+//            tid - track id. if not -1 then print it and all it's mothers if any   
+//   Returns: mother tid of the given tid if any
+  AliRunLoader *pAL=AliRunLoader::Open(); 
+  if(pAL->LoadHeader()) return -1;
+  if(pAL->LoadKinematics()) return -1;
   
-  Double_t starty=0;
-  Double_t deltay=AliRICHParam::SectorSizeY()/nPoints;
+  Int_t mtid=-1;
+  Int_t iNevt=pAL->GetNumberOfEvents();     Printf("This session contains %i event(s)",iNevt);
   
-  for(int i=0;i<nPoints;i++){
-    apHphot[i]=new TH1F(Form("hphot%i",i),"Qdc for Photon;QDC;Counts",500,0,500); apHphot[i]->SetLineColor(i);pStackPhot->Add(apHphot[i]);                 
-    apHmip[i] =new TH1F(Form("hmip%i",i),"Qdc for Mip;QDC;Counts",4000,0,4000);   apHmip[i]->SetLineColor(i);pStackMip->Add(apHmip[i]);                 
-    
-    pLeg->AddEntry(apHphot[i],Form("@(10,%5.2f->%5.2f)",starty+i*deltay,starty+i*deltay-SectorSizeY()/2));
-  }
-        
-  
-  TVector2 x2(0,0);  
-  for(Int_t i=0;i<10000;i++){//events loop
-    for(int j=0;j<nPoints;j++){
-      x2.Set(10,starty+j*deltay);
-      apHphot[j]->Fill(TotQdc(x2,0));
-      apHmip[j]->Fill(TotQdc(x2,gRandom->Landau(600,150)*1e-9));
-    }
-  }
-  
-  pC->cd(1);  pStackMip->Draw("nostack");
-  pC->cd(2);  pStackPhot->Draw("nostack"); pLeg->Draw();
-}//TestResp()
-//__________________________________________________________________________________________________
-void AliRICHParam::TestTrans()
+  for(Int_t iEvt=0;iEvt<iNevt;iEvt++){//events loop
+    if(evt!=-1 && evt!=iEvt) continue; //in case one needs to print the requested event, ignore all others
+    pAL->GetEvent(iEvt);    
+    AliStack *pStack=pAL->Stack();  
+    if(tid==-1){                        //print all tids for this event
+      for(Int_t i=0;i<pStack->GetNtrack();i++) pStack->Particle(i)->Print();
+      Printf("totally %i tracks including %i primaries for event %i out of %i event(s)",pStack->GetNtrack(),pStack->GetNprimary(),iEvt,iNevt);
+    }else{                              //print only this tid and it;s mothers
+      if(tid<0 || tid>pStack->GetNtrack()) {Printf("Wrong tid, valid tid range for event %i is 0-%i",iEvt,pStack->GetNtrack());break;}
+      TParticle *pTrack=pStack->Particle(tid); mtid=pTrack->GetFirstMother();
+      TString str=pTrack->GetName();
+      while((tid=pTrack->GetFirstMother()) >= 0){
+        pTrack=pStack->Particle(tid);
+        str+=" from ";str+=pTrack->GetName();
+      } 
+      Printf("%s",str.Data());       
+    }//if(tid==-1)      
+  }//events loop
+  pAL->UnloadHeader();  pAL->UnloadKinematics();
+  return mtid;
+}
+//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+Int_t AliRICHParam::StackCount(Int_t pid,Int_t evt)
 {
-//test the set of transformation methods
-  new TCanvas("trasform","Test LRS-MRS transform");
-  TLatex t; t.SetTextSize(0.02);
+// Counts total number of particles of given sort (including secondary) for a given event
+  AliRunLoader *pAL=AliRunLoader::Open(); 
+  pAL->GetEvent(evt);    
+  if(pAL->LoadHeader()) return 0;
+  if(pAL->LoadKinematics()) return 0;
+  AliStack *pStack=pAL->Stack();
   
-  TView *pView=new TView(1);
-  pView->SetRange(-600,-600,-600,600,600,600);
-  DrawAxis();  
-//Draw PC for all chambers by trasfering Pc plane using Pc2Mrs methode  
-  Int_t iNpointsX=50,iNpointsY=50;  
-  for(Int_t iChamberN=1;iChamberN<=7;iChamberN++){//chamber loop
-    TPolyMarker3D *pChamber=new TPolyMarker3D(iNpointsX*iNpointsY);
-    Int_t i=0;
-    for(Double_t x=0;x<PcSizeX();x+=PcSizeX()/iNpointsX)
-      for(Double_t y=0;y<PcSizeY();y+=PcSizeY()/iNpointsY){//step loop
-        TVector3 v3=C(iChamberN)->Pc2Mrs(TVector2(x,y));//from regular grid of local PC points to MRS presentation
-        pChamber->SetPoint(i++,v3.X(),v3.Y(),v3.Z());//Pc plane poing in MRS
-      }//step loop
-    pChamber->SetMarkerSize(1);
-    pChamber->SetMarkerColor(iChamberN);
-    pChamber->Draw();  
-    t.SetNDC();t.SetTextColor(iChamberN); t.DrawText(0.1,iChamberN*0.1,Form("Chamber %i",iChamberN));    
-  }//chamber loop   
-//  gPad->GetView()->RotateView(94,45);
-}//TestTrans()
-//__________________________________________________________________________________________________
-void AliRICHParam::DrawAxis()
-{
-  Double_t X[6]={0,0,0,300,0,0};  Double_t Y[6]={0,0,0,0,300,0};  Double_t Z[6]={0,0,0,0,0,300};  
-  TPolyLine3D *pXaxis=new TPolyLine3D(2,X);pXaxis->SetLineColor(kRed);   pXaxis->Draw();
-  TPolyLine3D *pYaxis=new TPolyLine3D(2,Y);pYaxis->SetLineColor(kGreen); pYaxis->Draw();
-  TPolyLine3D *pZaxis=new TPolyLine3D(2,Z);pZaxis->SetLineColor(kBlue);  pZaxis->Draw();  
+  Int_t iCnt=0;
+  for(Int_t i=0;i<pStack->GetNtrack();i++) if(pStack->Particle(i)->GetPdgCode()==pid) iCnt++;
+  
+  pAL->UnloadHeader();  pAL->UnloadKinematics();
+  return iCnt;
 }
+//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++