// that is the base for AliTPCtracker, AliITStrackerV2 and AliTRDtracker
// Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch
//-------------------------------------------------------------------------
-#include <TClass.h>
+
#include <TMath.h>
-#include <TGeoManager.h>
+#include <TH1F.h>
+#include <TGeoMatrix.h>
-#include "AliMagF.h"
#include "AliTracker.h"
+#include "AliGeomManager.h"
#include "AliCluster.h"
#include "AliKalmanTrack.h"
+#include "AliGlobalQADataMaker.h"
-extern TGeoManager *gGeoManager;
-
-Bool_t AliTracker::fgUniformField=kTRUE;
-Double_t AliTracker::fgBz=kAlmost0Field;
-const AliMagF *AliTracker::fgkFieldMap=0;
+Bool_t AliTracker::fFillResiduals=kFALSE;
+TObjArray **AliTracker::fResiduals=NULL;
+AliRecoParam::EventSpecie_t AliTracker::fEventSpecie=AliRecoParam::kDefault;
ClassImp(AliTracker)
AliTracker::AliTracker():
- TObject(),
- fX(0),
- fY(0),
- fZ(0),
- fSigmaX(0.005),
- fSigmaY(0.005),
- fSigmaZ(0.010)
+ AliTrackerBase(),
+ fEventInfo(NULL)
{
//--------------------------------------------------------------------
// The default constructor.
//--------------------------------------------------------------------
- if (!fgkFieldMap) AliWarning("Field map is not set. Call AliTracker::SetFieldMap before creating a tracker!");
}
//__________________________________________________________________________
AliTracker::AliTracker(const AliTracker &atr):
- TObject(atr),
- fX(atr.fX),
- fY(atr.fY),
- fZ(atr.fZ),
- fSigmaX(atr.fSigmaX),
- fSigmaY(atr.fSigmaY),
- fSigmaZ(atr.fSigmaZ)
+ AliTrackerBase(atr),
+ fEventInfo(atr.fEventInfo)
{
//--------------------------------------------------------------------
// The default constructor.
//--------------------------------------------------------------------
- if (!fgkFieldMap) AliWarning("Field map is not set. Call AliTracker::SetFieldMap before creating a tracker!");
}
//__________________________________________________________________________
-void AliTracker::SetFieldMap(const AliMagF* map, Bool_t uni) {
- //--------------------------------------------------------------------
- //This passes the field map to the reconstruction.
- //--------------------------------------------------------------------
- if (map==0) AliFatalClass("Can't access the field map !");
-
- if (fgkFieldMap) {
- AliWarningClass("The magnetic field map has been already set !");
- return;
- }
-
- fgUniformField=uni;
- fgkFieldMap=map;
-
- //Float_t r[3]={0.,0.,0.},b[3]; map->Field(r,b);
- //Double_t bz=-b[2];
-
- Double_t bz=-map->SolenoidField();
- fgBz=TMath::Sign(kAlmost0Field,bz) + bz;
+void AliTracker::FillClusterArray(TObjArray* /*array*/) const
+{
+ // Publishes all pointers to clusters known to the tracker into the
+ // passed object array.
+ // The ownership is not transfered - the caller is not expected to delete
+ // the clusters.
+ AliWarning("should be overriden by a sub-class.");
}
//__________________________________________________________________________
//This function "cooks" a track label. If label<0, this track is fake.
//--------------------------------------------------------------------
Int_t noc=t->GetNumberOfClusters();
+ if (noc<1) return;
Int_t *lb=new Int_t[noc];
Int_t *mx=new Int_t[noc];
AliCluster **clusters=new AliCluster*[noc];
}
}
-Double_t AliTracker::GetBz(Float_t *r) {
- //------------------------------------------------------------------
- // Returns Bz (kG) at the point "r" .
- //------------------------------------------------------------------
- Float_t b[3]; fgkFieldMap->Field(r,b);
- Double_t bz=-Double_t(b[2]);
- return (TMath::Sign(kAlmost0Field,bz) + bz);
+void AliTracker::FillResiduals(const AliExternalTrackParam *t,
+ Double_t *p, Double_t *cov,
+ UShort_t id, Bool_t updated) {
+ //
+ // This function fills the histograms of residuals
+ // The array of these histos is external for this AliTracker class.
+ // Normally, this array belong to AliGlobalQADataMaker class.
+ //
+ if (!fFillResiduals) return;
+ if (!fResiduals) return;
+
+ const Double_t *residuals=t->GetResiduals(p,cov,updated);
+ if (!residuals) return;
+
+ TH1F *h=0;
+ Int_t esIndex = AliRecoParam::AConvert(fEventSpecie) ;
+ AliGeomManager::ELayerID layer=AliGeomManager::VolUIDToLayer(id);
+ h=(TH1F*)fResiduals[esIndex]->At(2*layer-2);
+ if (h) h->Fill(residuals[0]);
+ h=(TH1F*)fResiduals[esIndex]->At(2*layer-1);
+ if (h) h->Fill(residuals[1]);
+
+ if (layer==5) {
+ if (p[1]<0) { // SSD1 absolute residuals
+ h = (TH1F*)fResiduals[esIndex]->At(40);
+ if (h) h->Fill(t->GetY()-p[0]); //C side
+ h = (TH1F*)fResiduals[esIndex]->At(41);
+ if (h) h->Fill(t->GetZ()-p[1]);
+ } else {
+ h = (TH1F*)fResiduals[esIndex]->At(42);
+ if (h) h->Fill(t->GetY()-p[0]); //A side
+ h = (TH1F*)fResiduals[esIndex]->At(43);
+ if (h) h->Fill(t->GetZ()-p[1]);
+ }
+ }
+ if (layer==6) { // SSD2 absolute residuals
+ if (p[1]<0) {
+ h = (TH1F*)fResiduals[esIndex]->At(44);
+ if (h) h->Fill(t->GetY()-p[0]); //C side
+ h = (TH1F*)fResiduals[esIndex]->At(45);
+ if (h) h->Fill(t->GetZ()-p[1]);
+ } else {
+ h = (TH1F*)fResiduals[esIndex]->At(46);
+ if (h) h->Fill(t->GetY()-p[0]); //A side
+ h = (TH1F*)fResiduals[esIndex]->At(47);
+ if (h) h->Fill(t->GetZ()-p[1]);
+ }
+ }
+
}
-Double_t
-AliTracker::MeanMaterialBudget(Double_t *start,Double_t *end,Double_t *mparam)
-{
- //
- // Calculate mean material budget and material properties between
- // the points "start" and "end".
- //
- // "mparam" - parameters used for the energy and multiple scattering
- // corrections:
- //
- // mparam[0] - mean density: sum(x_i*rho_i)/sum(x_i) [g/cm3]
- // mparam[1] - equivalent rad length fraction: sum(x_i/X0_i) [adimensional]
- // mparam[2] - mean A: sum(x_i*A_i)/sum(x_i) [adimensional]
- // mparam[3] - mean Z: sum(x_i*Z_i)/sum(x_i) [adimensional]
- // mparam[4] - length: sum(x_i) [cm]
- // mparam[5] - Z/A mean: sum(x_i*Z_i/A_i)/sum(x_i) [adimensional]
- // mparam[6] - number of boundary crosses
- //
- // Origin: Marian Ivanov, Marian.Ivanov@cern.ch
+void AliTracker::FillResiduals(const AliExternalTrackParam *t,
+ const AliCluster *c, Bool_t /*updated*/) {
//
- // Corrections and improvements by
- // Andrea Dainese, Andrea.Dainese@lnl.infn.it,
- // Andrei Gheata, Andrei.Gheata@cern.ch
+ // This function fills the histograms of residuals
+ // The array of these histos is external for this AliTracker class.
+ // Normally, this array belong to AliGlobalQADataMaker class.
+ //
+ // For the moment, the residuals are absolute !
//
- mparam[0]=0; mparam[1]=1; mparam[2] =0; mparam[3] =0;
- mparam[4]=0; mparam[5]=0; mparam[6]=0;
- //
- Double_t bparam[6]; // total parameters
- Double_t lparam[6]; // local parameters
+ if (!fFillResiduals) return;
+ if (!fResiduals) return;
- for (Int_t i=0;i<6;i++) bparam[i]=0;
+ UShort_t id=c->GetVolumeId();
+ const TGeoHMatrix *matrixT2L=AliGeomManager::GetTracking2LocalMatrix(id);
- if (!gGeoManager) {
- printf("ERROR: no TGeo\n");
- return 0.;
- }
- //
- Double_t length;
- Double_t dir[3];
- length = TMath::Sqrt((end[0]-start[0])*(end[0]-start[0])+
- (end[1]-start[1])*(end[1]-start[1])+
- (end[2]-start[2])*(end[2]-start[2]));
- mparam[4]=length;
- if (length<TGeoShape::Tolerance()) return 0.0;
- Double_t invlen = 1./length;
- dir[0] = (end[0]-start[0])*invlen;
- dir[1] = (end[1]-start[1])*invlen;
- dir[2] = (end[2]-start[2])*invlen;
-
- // Initialize start point and direction
- TGeoNode *currentnode = 0;
- TGeoNode *startnode = gGeoManager->InitTrack(start, dir);
- //printf("%s length=%f\n",gGeoManager->GetPath(),length);
- if (!startnode) {
- printf("ERROR: start point out of geometry\n");
- return 0.0;
- }
- TGeoMaterial *material = startnode->GetVolume()->GetMedium()->GetMaterial();
- lparam[0] = material->GetDensity();
- lparam[1] = material->GetRadLen();
- lparam[2] = material->GetA();
- lparam[3] = material->GetZ();
- lparam[4] = length;
- lparam[5] = lparam[3]/lparam[2];
- if (material->IsMixture()) {
- TGeoMixture * mixture = (TGeoMixture*)material;
- lparam[5] =0;
- Double_t sum =0;
- for (Int_t iel=0;iel<mixture->GetNelements();iel++){
- sum += mixture->GetWmixt()[iel];
- lparam[5]+= mixture->GetZmixt()[iel]*mixture->GetWmixt()[iel]/mixture->GetAmixt()[iel];
- }
- lparam[5]/=sum;
- }
+ // Position of the cluster in the tracking c.s.
+ Double_t clsTrk[3]={c->GetX(), c->GetY(), c->GetZ()};
+ // Position of the cluster in the local module c.s.
+ Double_t clsLoc[3]={0.,0.,0.};
+ matrixT2L->LocalToMaster(clsTrk,clsLoc);
- // Locate next boundary within length without computing safety.
- // Propagate either with length (if no boundary found) or just cross boundary
- gGeoManager->FindNextBoundaryAndStep(length, kFALSE);
- Double_t step = 0.0; // Step made
- Double_t snext = gGeoManager->GetStep();
- // If no boundary within proposed length, return current density
- if (!gGeoManager->IsOnBoundary()) {
- mparam[0] = lparam[0];
- mparam[1] = lparam[4]/lparam[1];
- mparam[2] = lparam[2];
- mparam[3] = lparam[3];
- mparam[4] = lparam[4];
- return lparam[0];
- }
- // Try to cross the boundary and see what is next
- Int_t nzero = 0;
- while (length>TGeoShape::Tolerance()) {
- currentnode = gGeoManager->GetCurrentNode();
- if (snext<2.*TGeoShape::Tolerance()) nzero++;
- else nzero = 0;
- if (nzero>3) {
- // This means navigation has problems on one boundary
- // Try to cross by making a small step
- printf("ERROR: cannot cross boundary\n");
- mparam[0] = bparam[0]/step;
- mparam[1] = bparam[1];
- mparam[2] = bparam[2]/step;
- mparam[3] = bparam[3]/step;
- mparam[5] = bparam[5]/step;
- mparam[4] = step;
- mparam[0] = 0.; // if crash of navigation take mean density 0
- mparam[1] = 1000000; // and infinite rad length
- return bparam[0]/step;
- }
- mparam[6]+=1.;
- step += snext;
- bparam[1] += snext/lparam[1];
- bparam[2] += snext*lparam[2];
- bparam[3] += snext*lparam[3];
- bparam[5] += snext*lparam[5];
- bparam[0] += snext*lparam[0];
-
- if (snext>=length) break;
- if (!currentnode) break;
- length -= snext;
- //printf("%s snext=%f length=%f\n", currentnode->GetName(),snext,length);
- material = currentnode->GetVolume()->GetMedium()->GetMaterial();
- lparam[0] = material->GetDensity();
- lparam[1] = material->GetRadLen();
- lparam[2] = material->GetA();
- lparam[3] = material->GetZ();
- //printf(" %f %f %f %f\n",lparam[0],lparam[1],lparam[2],lparam[3]);
- lparam[5] = lparam[3]/lparam[2];
- if (material->IsMixture()) {
- TGeoMixture * mixture = (TGeoMixture*)material;
- lparam[5]=0;
- Double_t sum =0;
- for (Int_t iel=0;iel<mixture->GetNelements();iel++){
- sum+= mixture->GetWmixt()[iel];
- lparam[5]+= mixture->GetZmixt()[iel]*mixture->GetWmixt()[iel]/mixture->GetAmixt()[iel];
- }
- lparam[5]/=sum;
- }
- gGeoManager->FindNextBoundaryAndStep(length, kFALSE);
- snext = gGeoManager->GetStep();
- //printf("snext %f\n",snext);
- }
- mparam[0] = bparam[0]/step;
- mparam[1] = bparam[1];
- mparam[2] = bparam[2]/step;
- mparam[3] = bparam[3]/step;
- mparam[5] = bparam[5]/step;
- return bparam[0]/step;
-}
+ // Position of the intersection point in the tracking c.s.
+ Double_t trkTrk[3]={t->GetX(),t->GetY(),t->GetZ()};
+ // Position of the intersection point in the local module c.s.
+ Double_t trkLoc[3]={0.,0.,0.};
+ matrixT2L->LocalToMaster(trkTrk,trkLoc);
+
+ Double_t residuals[2]={trkLoc[0]-clsLoc[0], trkLoc[2]-clsLoc[2]};
+
+ TH1F *h=0;
+ Int_t esIndex = AliRecoParam::AConvert(fEventSpecie) ;
+ AliGeomManager::ELayerID layer=AliGeomManager::VolUIDToLayer(id);
+ h=(TH1F*)fResiduals[esIndex]->At(2*layer-2);
+ if (h) h->Fill(residuals[0]);
+ h=(TH1F*)fResiduals[esIndex]->At(2*layer-1);
+ if (h) h->Fill(residuals[1]);
-Bool_t
-AliTracker::PropagateTrackTo(AliExternalTrackParam *track, Double_t xToGo,
-Double_t mass, Double_t maxStep, Bool_t rotateTo, Double_t maxSnp){
- //----------------------------------------------------------------
- //
- // Propagates the track to the plane X=xk (cm) using the magnetic field map
- // and correcting for the crossed material.
- //
- // mass - mass used in propagation - used for energy loss correction
- // maxStep - maximal step for propagation
- //
- // Origin: Marian Ivanov, Marian.Ivanov@cern.ch
- //
- //----------------------------------------------------------------
- const Double_t kEpsilon = 0.00001;
- Double_t xpos = track->GetX();
- Double_t dir = (xpos<xToGo) ? 1.:-1.;
- //
- while ( (xToGo-xpos)*dir > kEpsilon){
- Double_t step = dir*TMath::Min(TMath::Abs(xToGo-xpos), maxStep);
- Double_t x = xpos+step;
- Double_t xyz0[3],xyz1[3],param[7];
- track->GetXYZ(xyz0); //starting global position
-
- Double_t bz=GetBz(xyz0); // getting the local Bz
-
- if (!track->GetXYZAt(x,bz,xyz1)) return kFALSE; // no prolongation
- xyz1[2]+=kEpsilon; // waiting for bug correction in geo
-
- if (TMath::Abs(track->GetSnpAt(x,bz)) >= maxSnp) return kFALSE;
- if (!track->PropagateTo(x,bz)) return kFALSE;
-
- MeanMaterialBudget(xyz0,xyz1,param);
- Double_t xrho=param[0]*param[4], xx0=param[1];
-
- if (!track->CorrectForMeanMaterial(xx0,xrho,mass)) return kFALSE;
- if (rotateTo){
- if (TMath::Abs(track->GetSnp()) >= maxSnp) return kFALSE;
- track->GetXYZ(xyz0); // global position
- Double_t alphan = TMath::ATan2(xyz0[1], xyz0[0]);
- //
- Double_t ca=TMath::Cos(alphan-track->GetAlpha()),
- sa=TMath::Sin(alphan-track->GetAlpha());
- Double_t sf=track->GetSnp(), cf=TMath::Sqrt(1.- sf*sf);
- Double_t sinNew = sf*ca - cf*sa;
- if (TMath::Abs(sinNew) >= maxSnp) return kFALSE;
- if (!track->Rotate(alphan)) return kFALSE;
- }
- xpos = track->GetX();
- }
- return kTRUE;
}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff