#include <AliESDVertex.h>
-#include <AliITSVertexer.h>
-#include <AliRunLoader.h>
-#include <AliITSLoader.h>
-#include <AliITSRecPoint.h>
-#include <AliITSclusterV2.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)
//////////////////////////////////////////////////////////////////////
// Base class for primary vertex reconstruction //
// AliESDVertexer is a class for full 3D primary vertex finding //
-// derived classes: AliITSVertexerIons AliITSvertexerPPZ //
-// AliITSVertexerTracks //
+// derived classes: AliITSVertexerIons AliITSvertexer3D //
+// AliITSVertexerCosmics //
//////////////////////////////////////////////////////////////////////
//______________________________________________________________________
-AliITSVertexer::AliITSVertexer():AliVertexer() {
+AliITSVertexer::AliITSVertexer():AliVertexer(),
+fLadders(),
+fLadOnLay2(0) {
// Default Constructor
- SetUseV2Clusters(kTRUE);
+ SetLaddersOnLayer2();
}
-AliITSVertexer::AliITSVertexer(TString filename) {
+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;
- SetDebug();
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);
}
- SetUseV2Clusters(kTRUE);
+ */
+ SetLaddersOnLayer2();
}
//______________________________________________________________________
return *this;
}
+//______________________________________________________________________
+AliITSVertexer::~AliITSVertexer() {
+ // Destructor
+ if(fLadders) delete [] fLadders;
+}
+
+//______________________________________________________________________
+void AliITSVertexer::FindMultiplicity(Int_t evnumber){
+ // Invokes AliITSMultReconstructor to determine the
+ // charged multiplicity in the pixel layers
+ if(fMult){delete fMult; fMult = 0;}
+ Bool_t success=kTRUE;
+ if(!fCurrentVertex)success=kFALSE;
+ if(fCurrentVertex && fCurrentVertex->GetNContributors()<1)success=kFALSE;
+ if(!success){
+ AliWarning("Tracklets multiplicity not determined because the primary vertex was not found");
+ return;
+ }
+ AliITSMultReconstructor* multReco = new AliITSMultReconstructor();
+ AliRunLoader *rl =AliRunLoader::GetRunLoader();
+ AliITSLoader* itsLoader = (AliITSLoader*)rl->GetLoader("ITSLoader");
+ multReco->SetGeometry(itsLoader->GetITSgeom());
+ itsLoader->LoadRecPoints();
+ rl->GetEvent(evnumber);
+ TTree* itsClusterTree = itsLoader->TreeR();
+ if (!itsClusterTree) {
+ AliError(" Can't get the ITS cluster tree !\n");
+ return;
+ }
+ Double_t vtx[3];
+ fCurrentVertex->GetXYZ(vtx);
+ Float_t vtxf[3];
+ for(Int_t i=0;i<3;i++)vtxf[i]=vtx[i];
+ multReco->SetHistOn(kFALSE);
+ multReco->Reconstruct(itsClusterTree,vtxf,vtxf);
+ Int_t notracks=multReco->GetNTracklets();
+ Float_t *tht = new Float_t [notracks];
+ Float_t *phi = new Float_t [notracks];
+ Float_t *dphi = new Float_t [notracks];
+ Int_t *labels = new Int_t[notracks];
+ for(Int_t i=0;i<multReco->GetNTracklets();i++){
+ tht[i] = multReco->GetTracklet(i)[0];
+ phi[i] = multReco->GetTracklet(i)[1];
+ dphi[i] = multReco->GetTracklet(i)[2];
+ labels[i] = multReco->GetTracklet(i)[3];
+ }
+ Int_t nosingleclus=multReco->GetNSingleClusters();
+ Float_t *ths = new Float_t [nosingleclus];
+ Float_t *phs = new Float_t [nosingleclus];
+ for(Int_t i=0;i<nosingleclus;i++){
+ ths[i] = multReco->GetCluster(i)[0];
+ phs[i] = multReco->GetCluster(i)[1];
+ }
+ fMult = new AliMultiplicity(notracks,tht,phi,dphi,labels,nosingleclus,ths,phs);
+ delete [] tht;
+ delete [] phi;
+ delete [] dphi;
+ delete [] ths;
+ delete [] phs;
+ itsLoader->UnloadRecPoints();
+ delete multReco;
+ 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(){
rc = itsLoader->WriteVertices();
}
-//______________________________________________________________________
-void AliITSVertexer::Clusters2RecPoints
-(const TClonesArray *clusters, Int_t idx, TClonesArray *points) {
- //------------------------------------------------------------
- // Conversion AliITSclusterV2 -> AliITSRecPoints for the ITS
- // module "idx" (entry in the tree with the clusters).
- // Simplified version, supposed to work with the pixels only !
- //------------------------------------------------------------
- const Int_t lastSPD1=79; //let's hope the number of the SPDs will not change
- const Int_t lastSPD2=239;//let's hope the number of the SPDs will not change
-
- Float_t yshift = 0; //see AliITSclustererV2.cxx about these shifts
- Float_t zshift[4] = {-10.708000, -3.536000, 3.536000, 10.708000}; //let's hope the positioning of the SPDs will not change
-
- if (idx<=lastSPD1) {
- yshift=0.248499; //let's hope the positioning of the SPDs will not change
- } else if (idx<=lastSPD2) {
- yshift=3.096207; //let's hope the positioning of the SPDs will not change
- } else {
- Fatal("Clusters2RecPoints","This is not an SPD module ! %d",idx);
- }
-
- TClonesArray &pn=*points;
- Int_t ncl=clusters->GetEntriesFast();
- for (Int_t i=0; i<ncl; i++) {
- AliITSRecPoint p;
- AliITSclusterV2 *c = (AliITSclusterV2 *)clusters->UncheckedAt(i);
-
- Float_t x=c->GetY(); if (idx<=lastSPD1) x=-x;
- x+=yshift;
-
- Float_t z=c->GetZ();
- z=-z; z+=zshift[idx%4];
-
- p.SetX(x);
- p.SetZ(z);
- p.SetQ(c->GetQ());
- p.SetSigmaX2(c->GetSigmaY2());
- p.SetSigmaZ2(c->GetSigmaZ2());
- p.SetLabel(0,c->GetLabel(0));
- p.SetLabel(1,c->GetLabel(1));
- p.SetLabel(2,c->GetLabel(2));
-
- new (pn[i]) AliITSRecPoint(p);
- }
-
-}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff