#include <AliESDVertex.h>
-#include <AliITSVertexer.h>
-#include <AliRunLoader.h>
-#include <AliITSLoader.h>
-#include <AliMultiplicity.h>
-#include <AliITSMultReconstructor.h>
+#include "AliITSgeom.h"
+#include "AliITSVertexer.h"
+#include "AliRunLoader.h"
+#include "AliITSLoader.h"
+#include "AliMultiplicity.h"
+#include "AliITSMultReconstructor.h"
+
+const Float_t AliITSVertexer::fgkPipeRadius = 3.0;
ClassImp(AliITSVertexer)
//////////////////////////////////////////////////////////////////////
//______________________________________________________________________
-AliITSVertexer::AliITSVertexer():AliVertexer() {
+AliITSVertexer::AliITSVertexer():AliVertexer(),
+fLadders(),
+fLadOnLay2(0) {
// Default Constructor
+ SetLaddersOnLayer2();
}
-AliITSVertexer::AliITSVertexer(TString filename):AliVertexer() {
+AliITSVertexer::AliITSVertexer(TString filename):AliVertexer(),
+fLadders(),
+fLadOnLay2(0)
+{
// Standard constructor
AliRunLoader *rl = AliRunLoader::GetRunLoader();
if(!rl){
Fatal("AliITSVertexer","Run Loader not found");
}
+ /*
if(rl->LoadgAlice()){
Fatal("AliITSVertexer","The AliRun object is not available - nothing done");
}
+ */
fCurrentVertex = 0;
SetFirstEvent(0);
SetLastEvent(0);
- rl->LoadHeader();
+ // rl->LoadHeader();
AliITSLoader* itsLoader = (AliITSLoader*) rl->GetLoader("ITSLoader");
if(!filename.Contains("default"))itsLoader->SetVerticesFileName(filename);
if(!filename.Contains("null"))itsLoader->LoadVertices("recreate");
itsLoader->LoadRecPoints();
- Int_t lst;
+ // Int_t lst;
+ SetLastEvent(rl->GetNumberOfEvents()-1);
+ /*
if(rl->TreeE()){
lst = static_cast<Int_t>(rl->TreeE()->GetEntries());
SetLastEvent(lst-1);
}
+ */
+ SetLaddersOnLayer2();
}
//______________________________________________________________________
return *this;
}
+//______________________________________________________________________
+AliITSVertexer::~AliITSVertexer() {
+ // Destructor
+ if(fLadders) delete [] fLadders;
+}
+
//______________________________________________________________________
void AliITSVertexer::FindMultiplicity(Int_t evnumber){
// Invokes AliITSMultReconstructor to determine the
return;
}
+//______________________________________________________________________
+void AliITSVertexer::SetLaddersOnLayer2(Int_t ladwid){
+ // Calculates the array of ladders on layer 2 to be used with a
+ // given ladder on layer 1
+ fLadOnLay2=ladwid;
+ AliRunLoader *rl =AliRunLoader::GetRunLoader();
+ AliITSLoader* itsLoader = (AliITSLoader*)rl->GetLoader("ITSLoader");
+ AliITSgeom* geom = itsLoader->GetITSgeom();
+ Int_t ladtot1=geom->GetNladders(1);
+ if(fLadders) delete [] fLadders;
+ fLadders=new UShort_t[ladtot1];
+
+
+ Double_t pos1[3],pos2[3];
+ Int_t mod1=geom->GetModuleIndex(2,1,1);
+ geom->GetTrans(mod1,pos1); // position of the module in the MRS
+ Double_t phi0=TMath::ATan2(pos1[1],pos1[0]);
+ if(phi0<0) phi0+=2*TMath::Pi();
+ Int_t mod2=geom->GetModuleIndex(2,2,1);
+ geom->GetTrans(mod2,pos2);
+ Double_t phi2=TMath::ATan2(pos2[1],pos2[0]);
+ if(phi2<0) phi2+=2*TMath::Pi();
+ Double_t deltaPhi= phi0-phi2; // phi width of a layer2 module
+
+ for(Int_t i= 0; i<ladtot1;i++){
+ Int_t modlad= geom->GetModuleIndex(1,i+1,1);
+ Double_t posmod[3];
+ geom->GetTrans(modlad,posmod);
+ Double_t phimod=TMath::ATan2(posmod[1],posmod[0]);
+ if(phimod<0) phimod+=2*TMath::Pi();
+ Double_t phi1= phimod+deltaPhi*double(fLadOnLay2);
+ if(phi1<0) phi1+=2*TMath::Pi();
+ if(phi1>2*TMath::Pi()) phi1-=2*TMath::Pi();
+ Double_t philad1=phi0-phi1;
+ UShort_t lad1;
+ Double_t ladder1=(philad1)/(deltaPhi) +1.;
+ if(ladder1<1){ladder1=40+ladder1;}
+ lad1=int(ladder1+0.5);
+ fLadders[i]=lad1;
+ }
+}
+
+
//______________________________________________________________________
void AliITSVertexer::WriteCurrentVertex(){
// Write the current AliVertex object to file fOutFile