// //
///////////////////////////////////////////////////////////////////////////////
-
-#include <Riostream.h>
#include <TBranch.h>
#include <TFile.h>
#include <TGraph.h>
-#include <TH1D.h>
-#include <TH2D.h>
#include <TLinearFitter.h>
#include <TObjArray.h>
#include <TROOT.h>
const Float_t AliTRDtracker::fgkMinClustersInTrack = 0.5; //
const Float_t AliTRDtracker::fgkLabelFraction = 0.8; //
const Double_t AliTRDtracker::fgkMaxChi2 = 12.0; //
-const Double_t AliTRDtracker::fgkMaxSnp = 0.95; // Corresponds to tan = 3
+const Double_t AliTRDtracker::fgkMaxSnp = 0.95; // Maximum local sine of the azimuthal angle
const Double_t AliTRDtracker::fgkMaxStep = 2.0; // Maximal step size in propagation
//_____________________________________________________________________________
for (Int_t i = 0; i < kTrackingSectors; i++) {
fTrSec[i] = 0;
}
- for (Int_t j = 0; j < 5; j++) {
- for (Int_t k = 0; k < 18; k++) {
- fHoles[j][k] = kFALSE;
- }
- }
InitLogHists();
TDirectory *savedir = gDirectory;
fGeom = new AliTRDgeometry();
- fGeom->ReadGeoMatrices();
for (Int_t geomS = 0; geomS < kTrackingSectors; geomS++) {
Int_t trS = geomS;
fTrSec[trS] = new AliTRDtrackingSector(fGeom,geomS);
- for (Int_t icham = 0; icham < AliTRDgeometry::kNcham; icham++) {
- // Could also go ...
- fHoles[icham][trS] = fGeom->IsHole(0,icham,geomS);
- }
}
AliTRDpadPlane *padPlane = fGeom->GetPadPlane(0,0);
Double_t y = track->GetY();
Double_t ymax = track->GetX()*TMath::Tan(0.5*alpha);
- // Is this still needed ????
- //Int_t ns = AliTRDgeometry::kNsect;
- //Int_t s=Int_t(track->GetAlpha()/alpha)%ns;
-
if (y > ymax) {
- //s = (s+1) % ns;
if (!track->Rotate( alpha)) {
return kFALSE;
}
}
else if (y < -ymax) {
- //s = (s-1+ns) % ns;
if (!track->Rotate(-alpha)) {
return kFALSE;
}
Int_t found = 0; // number of tracks found
Float_t foundMin = 20.0;
- Int_t n = event->GetNumberOfTracks();
- // Sort tracks
- Float_t *quality = new Float_t[n];
- Int_t *index = new Int_t[n];
- for (Int_t i = 0; i < n; i++) {
- AliESDtrack *seed = event->GetTrack(i);
+ // Sort tracks according to covariance of local Y and Z
+ Int_t nSeed = event->GetNumberOfTracks();
+ Float_t *quality = new Float_t[nSeed];
+ Int_t *index = new Int_t[nSeed];
+ for (Int_t iSeed = 0; iSeed < nSeed; iSeed++) {
+ AliESDtrack *seed = event->GetTrack(iSeed);
Double_t covariance[15];
seed->GetExternalCovariance(covariance);
- quality[i] = covariance[0]+covariance[2];
- //quality[i] = covariance[0];
+ quality[iSeed] = covariance[0] + covariance[2];
}
- TMath::Sort(n,quality,index,kFALSE);
+ TMath::Sort(nSeed,quality,index,kFALSE);
- for (Int_t i = 0; i < n; i++) {
+ // Backpropagate all seeds
+ for (Int_t iSeed = 0; iSeed < nSeed; iSeed++) {
- //AliESDtrack *seed = event->GetTrack(i);
- AliESDtrack *seed = event->GetTrack(index[i]);
- fHBackfit->Fill(0);
+ // Get the seeds in sorted sequence
+ AliESDtrack *seed = event->GetTrack(index[iSeed]);
+ fHBackfit->Fill(0); // All seeds
+ // Check the seed status
ULong_t status = seed->GetStatus();
if ((status & AliESDtrack::kTPCout) == 0) {
- fHBackfit->Fill(1);
+ fHBackfit->Fill(1); // TPC outer edge reached
continue;
}
-
if ((status & AliESDtrack::kTRDout) != 0) {
- fHBackfit->Fill(2);
+ fHBackfit->Fill(2); // TRD outer edge reached (does this happen ?)
continue;
}
- Int_t lbl = seed->GetLabel();
- AliTRDtrack *track = new AliTRDtrack(*seed);
+ // Do the back prolongation
+ Int_t lbl = seed->GetLabel();
+ AliTRDtrack *track = new AliTRDtrack(*seed);
track->SetSeedLabel(lbl);
seed->UpdateTrackParams(track,AliESDtrack::kTRDbackup); // Make backup
fNseeds++;
- Float_t p4 = track->GetC();
- Int_t expectedClr = FollowBackProlongation(*track);
-
- fHBackfit->Fill(3);
+ Float_t p4 = track->GetC();
+ Int_t expectedClr = FollowBackProlongation(*track);
+ fHBackfit->Fill(3); // Back prolongation done
fHX->Fill(track->GetX());
+ // !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
-
- // store the last measurement
- /*
- fHNClTrack->Fill(track->GetNumberOfClusters());
- if (track->GetNumberOfClusters() >= foundMin) {
-
- fHBackfit->Fill(4);
- track->CookdEdx();
- CookdEdxTimBin(*track);
- CookLabel(track,1 - fgkLabelFraction);
- if (track->GetBackupTrack()) {
- //fHBackfit->Fill(5);
- UseClusters(track->GetBackupTrack());
- seed->UpdateTrackParams(track->GetBackupTrack(),AliESDtrack::kTRDbackup);
- }
- }
- */
-
- /**/
- // inter-tracks competition ???
if ((TMath::Abs(track->GetC() - p4) / TMath::Abs(p4) < 0.2) ||
(track->Pt() > 0.8)) {
Int_t foundClr = track->GetNumberOfClusters();
if (foundClr >= foundMin) {
track->CookdEdx();
- track->CookdEdxTimBin(); // A.Bercuci 25.07.07
+ track->CookdEdxTimBin(seed->GetID()); // A.Bercuci 25.07.07
CookLabel(track,1 - fgkLabelFraction);
if (track->GetBackupTrack()) {
UseClusters(track->GetBackupTrack());
SaveLogHists();
return 0;
+
}
//_____________________________________________________________________________
// Origin: Thomas KUHR (Thomas.Kuhr@cern.ch)
//
- Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins();
- Float_t foundMin = fgkMinClustersInTrack * timeBins;
+ //Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins();
+ //Float_t foundMin = fgkMinClustersInTrack * timeBins;
Int_t nseed = 0;
Int_t found = 0;
+ Int_t pidQ = 0;
//Int_t innerTB = fTrSec[0]->GetInnerTimeBin();
AliTRDtrack seed2;
indexes3[i] = indexes2[i];
}
- //AliTRDtrack *pt = seed2;
- //AliTRDtrack &t = *pt;
FollowProlongation(*pt);
- if (pt->GetNumberOfClusters() >= foundMin) {
- //UseClusters(&t);
- //CookLabel(pt, 1-fgkLabelFraction);
- pt->CookdEdx();
- pt->CookdEdxTimBin();
- pt->CookPID(seed);
- //pt->Calibrate(); // slot for calibration
- }
+ pt->CookdEdx();
+ pt->CookdEdxTimBin(seed->GetID());
+ pt->SetPIDMethod(AliTRDtrack::kLQ); //switch between TRD PID methods
+ pt->CookPID(pidQ);
found++;
Double_t xTPC = 250.0;
}
seed->SetTRDTimBin(pt->GetPIDTimBin(i),i);
}
+
}
else {
+
// If not prolongation to TPC - propagate without update
fHRefit->Fill(5);
AliTRDtrack *seed2 = new AliTRDtrack(*seed);
seed2->ResetCovariance(5.0);
AliTRDtrack *pt2 = new AliTRDtrack(*seed2,seed2->GetAlpha());
delete seed2;
+
if (PropagateToX(*pt2,xTPC,fgkMaxStep)) {
- pt2->CookdEdx( );
- pt2->CookdEdxTimBin();
+
+ pt2->CookdEdx();
+ pt2->CookdEdxTimBin(seed->GetID());
seed->UpdateTrackParams(pt2,AliESDtrack::kTRDrefit);
fHRefit->Fill(6);
for (Int_t i = 0; i < AliESDtrack::kNPlane; i++) {
for (Int_t j = 0; j < AliESDtrack::kNSlice; j++) {
seed->SetTRDsignals(pt2->GetPIDsignals(i,j),i,j);
- }
+ }
seed->SetTRDTimBin(pt2->GetPIDTimBin(i),i);
}
+
}
- // Add TRD track to ESDfriendTrack - maybe this tracks are not useful for post-processing - TODO make decission
+ // Add TRD track to ESDfriendTrack - maybe this tracks are
+ // not useful for post-processing - TODO make decision
if (AliTRDReconstructor::StreamLevel() > 0) {
seed->AddCalibObject(new AliTRDtrack(*pt2/*, kTRUE*/));
}
delete pt2;
+
}
// Add TRD track to ESDfriendTrack
AliInfo(Form("Number of found tracks from loaded seeds: %d",found));
SaveLogHists();
+
return 0;
+
}
//_____________________________________________________________________________
Int_t AliTRDtracker::FollowProlongation(AliTRDtrack &t)
{
- //
- // Starting from current position on track=t this function tries
- // to extrapolate the track up to timeBin=0 and to confirm prolongation
- // if a close cluster is found. Returns the number of clusters
- // expected to be found in sensitive layers
- // GeoManager used to estimate mean density
- //
+ //
+ // Starting from current position on track=t this function tries
+ // to extrapolate the track up to timeBin=0 and to confirm prolongation
+ // if a close cluster is found. Returns the number of clusters
+ // expected to be found in sensitive layers
+ // GeoManager used to estimate mean density
+ //
- Int_t sector;
- Int_t lastplane = GetLastPlane(&t);
- Double_t xx0 = 0.0;
- Double_t xrho= 0.0;
- Int_t expectedNumberOfClusters = 0;
+ Int_t sector;
+ Int_t lastplane = GetLastPlane(&t);
+ Double_t xx0 = 0.0;
+ Double_t xrho= 0.0;
+ Int_t expectedNumberOfClusters = 0;
- for (Int_t iplane = lastplane; iplane >= 0; iplane--) {
+ for (Int_t iplane = lastplane; iplane >= 0; iplane--) {
- Int_t row0 = GetGlobalTimeBin(0,iplane,GetTimeBinsPerPlane()-1);
- Int_t rowlast = GetGlobalTimeBin(0,iplane,0);
+ Int_t row0 = GetGlobalTimeBin(0,iplane,GetTimeBinsPerPlane()-1);
+ Int_t rowlast = GetGlobalTimeBin(0,iplane,0);
- //
- // Propagate track close to the plane if neccessary
- //
- Double_t currentx = fTrSec[0]->GetLayer(rowlast)->GetX();
- if (currentx < (-fgkMaxStep + t.GetX())) {
- // Propagate closer to chamber - safety space fgkMaxStep
- if (!PropagateToX(t,currentx+fgkMaxStep,fgkMaxStep)) {
- break;
- }
- }
+ // Propagate track close to the plane if neccessary
+ Double_t currentx = fTrSec[0]->GetLayer(rowlast)->GetX();
+ if (currentx < (-fgkMaxStep + t.GetX())) {
+ // Propagate closer to chamber - safety space fgkMaxStep
+ if (!PropagateToX(t,currentx+fgkMaxStep,fgkMaxStep)) {
+ break;
+ }
+ }
- if (!AdjustSector(&t)) {
- break;
- }
+ if (!AdjustSector(&t)) {
+ break;
+ }
- //
- // Get material budget
- //
- Double_t xyz0[3];
- Double_t xyz1[3];
- Double_t param[7];
- Double_t x;
- Double_t y;
- Double_t z;
-
- // Starting global position
- t.GetXYZ(xyz0);
- // End global position
- x = fTrSec[0]->GetLayer(row0)->GetX();
- if (!t.GetProlongation(x,y,z)) {
- break;
- }
- xyz1[0] = x * TMath::Cos(t.GetAlpha()) - y * TMath::Sin(t.GetAlpha());
- xyz1[1] = +x * TMath::Sin(t.GetAlpha()) + y * TMath::Cos(t.GetAlpha());
- xyz1[2] = z;
- AliTracker::MeanMaterialBudget(xyz0,xyz1,param);
- xrho= param[0]*param[4];
- xx0 = param[1]; // Get mean propagation parameters
- // A.Bercuci 25.07.07
- // Flags for marking the track momentum and direction. The track is
- // marked only if it has at least 1 cluster picked up in the current
- // chamber.
- Bool_t kUPDATED = kFALSE, kMARKED = kFALSE;
+ // Get material budget
+ Double_t xyz0[3];
+ Double_t xyz1[3];
+ Double_t param[7];
+ Double_t x;
+ Double_t y;
+ Double_t z;
- //
- // Propagate and update
- //
- sector = t.GetSector();
- //for (Int_t itime=GetTimeBinsPerPlane()-1;itime>=0;itime--) {
- for (Int_t itime = 0 ; itime < GetTimeBinsPerPlane(); itime++) {
- // A.Bercuci 25.07.07
- // Mark track kinematics
- if(itime > 10 && kUPDATED && !kMARKED){
- t.SetTrackSegmentDirMom(iplane);
- kMARKED = kTRUE;
- }
-
- Int_t ilayer = GetGlobalTimeBin(0,iplane,itime);
- expectedNumberOfClusters++;
- t.SetNExpected(t.GetNExpected() + 1);
- if (t.GetX() > 345.0) {
- t.SetNExpectedLast(t.GetNExpectedLast() + 1);
- }
- AliTRDpropagationLayer &timeBin = *(fTrSec[sector]->GetLayer(ilayer));
- AliTRDcluster *cl = 0;
- UInt_t index = 0;
- Double_t maxChi2 = fgkMaxChi2;
- x = timeBin.GetX();
-
- if (timeBin) {
-
- AliTRDcluster *cl0 = timeBin[0];
- if (!cl0) {
- // No clusters in given time bin
- continue;
- }
-
- Int_t plane = fGeom->GetPlane(cl0->GetDetector());
- if (plane > lastplane) {
- continue;
- }
-
- Int_t timebin = cl0->GetLocalTimeBin();
- AliTRDcluster *cl2 = GetCluster(&t,plane,timebin,index);
-
- if (cl2) {
- cl = cl2;
- //Double_t h01 = GetTiltFactor(cl); //I.B's fix
- //maxChi2=t.GetPredictedChi2(cl,h01);
- }
- if (cl) {
- //if (cl->GetNPads()<5)
- Double_t dxsample = timeBin.GetdX();
- t.SetSampledEdx(TMath::Abs(cl->GetQ()/dxsample));
- Double_t h01 = GetTiltFactor(cl);
- Int_t det = cl->GetDetector();
- Int_t plane = fGeom->GetPlane(det);
- if (t.GetX() > 345.0) {
- t.SetNLast(t.GetNLast() + 1);
- t.SetChi2Last(t.GetChi2Last() + maxChi2);
- }
-
- Double_t xcluster = cl->GetX();
- t.PropagateTo(xcluster,xx0,xrho);
-
- if (!AdjustSector(&t)) {
- break; //I.B's fix
- }
- maxChi2 = t.GetPredictedChi2(cl,h01);
-
- if (maxChi2<1e+10)
- if (!t.UpdateMI(cl,maxChi2,index,h01,plane)) {
- // ????
- } else {
- // A.Bercuci 25.07.07
- //SetCluster(cl, GetNumberOfClusters()-1);
- kUPDATED = kTRUE;
- }
- }
- }
- }
+ // Starting global position
+ t.GetXYZ(xyz0);
+ // End global position
+ x = fTrSec[0]->GetLayer(row0)->GetX();
+ if (!t.GetProlongation(x,y,z)) {
+ break;
+ }
+ xyz1[0] = x * TMath::Cos(t.GetAlpha()) - y * TMath::Sin(t.GetAlpha());
+ xyz1[1] = +x * TMath::Sin(t.GetAlpha()) + y * TMath::Cos(t.GetAlpha());
+ xyz1[2] = z;
+ AliTracker::MeanMaterialBudget(xyz0,xyz1,param);
+ xrho= param[0]*param[4];
+ xx0 = param[1]; // Get mean propagation parameters
+
+ // Flags for marking the track momentum and direction. The track is
+ // marked only if it has at least 1 cluster picked up in the current
+ // chamber.
+ Bool_t kUPDATED = kFALSE;
+ Bool_t kMARKED = kFALSE;
+
+ // Propagate and update
+ sector = t.GetSector();
+ //for (Int_t itime=GetTimeBinsPerPlane()-1;itime>=0;itime--) {
+ for (Int_t itime = 0 ; itime < GetTimeBinsPerPlane(); itime++) {
+
+ // Mark track kinematics
+ if (itime > 10 && kUPDATED && !kMARKED) {
+ t.SetTrackSegmentDirMom(iplane);
+ kMARKED = kTRUE;
+ }
+
+ Int_t ilayer = GetGlobalTimeBin(0,iplane,itime);
+ expectedNumberOfClusters++;
+ t.SetNExpected(t.GetNExpected() + 1);
+ if (t.GetX() > 345.0) {
+ t.SetNExpectedLast(t.GetNExpectedLast() + 1);
+ }
+ AliTRDpropagationLayer &timeBin = *(fTrSec[sector]->GetLayer(ilayer));
+ AliTRDcluster *cl = 0;
+ UInt_t index = 0;
+ Double_t maxChi2 = fgkMaxChi2;
+ x = timeBin.GetX();
+
+ if (timeBin) {
+
+ AliTRDcluster *cl0 = timeBin[0];
+ if (!cl0) {
+ // No clusters in given time bin
+ continue;
}
- return expectedNumberOfClusters;
+ Int_t plane = fGeom->GetPlane(cl0->GetDetector());
+ if (plane > lastplane) {
+ continue;
+ }
+
+ Int_t timebin = cl0->GetLocalTimeBin();
+ AliTRDcluster *cl2 = GetCluster(&t,plane,timebin,index);
+
+ if (cl2) {
+ cl = cl2;
+ //Double_t h01 = GetTiltFactor(cl); //I.B's fix
+ //maxChi2=t.GetPredictedChi2(cl,h01);
+ }
+
+ if (cl) {
+
+ //if (cl->GetNPads()<5)
+ Double_t dxsample = timeBin.GetdX();
+ t.SetSampledEdx(TMath::Abs(cl->GetQ()/dxsample));
+ Double_t h01 = GetTiltFactor(cl);
+ Int_t det = cl->GetDetector();
+ Int_t plane = fGeom->GetPlane(det);
+
+ if (t.GetX() > 345.0) {
+ t.SetNLast(t.GetNLast() + 1);
+ t.SetChi2Last(t.GetChi2Last() + maxChi2);
+ }
+
+ Double_t xcluster = cl->GetX();
+ t.PropagateTo(xcluster,xx0,xrho);
+ if (!AdjustSector(&t)) {
+ break; //I.B's fix
+ }
+
+ maxChi2 = t.GetPredictedChi2(cl,h01);
+ if (maxChi2 < 1e+10) {
+ if (!t.UpdateMI(cl,maxChi2,index,h01,plane)) {
+ // ????
+ }
+ else {
+ //SetCluster(cl, GetNumberOfClusters()-1);
+ kUPDATED = kTRUE;
+ }
+ }
+
+ }
+
+ }
+
+ }
+
+ }
+
+ return expectedNumberOfClusters;
+
}
//_____________________________________________________________________________
{
//
// Starting from current radial position of track <t> this function
- // extrapolates the track up to outer timebin and in the sensitive
+ // extrapolates the track up to the outer timebin and in the sensitive
// layers confirms prolongation if a close cluster is found.
// Returns the number of clusters expected to be found in sensitive layers
- // Use GEO manager for material Description
+ // Uses the geomanager for material description
//
// return number of assigned clusters ?
//
-
Int_t sector;
- Int_t clusters[1000];
- Double_t xx0 = 0.0;
- Double_t xrho = 0.0;
+
+ Double_t xx0 = 0.0;
+ Double_t xrho = 0.0;
+
+ Float_t ratio0 = 0.0;
+
Int_t expectedNumberOfClusters = 0;
- Float_t ratio0 = 0.0;
+
AliTRDtracklet tracklet;
+ const Int_t kNclusters = 1000;
+ Int_t clusters[kNclusters];
+ for (Int_t i = 0; i < kNclusters; i++) {
+ clusters[i] = -1;
+ }
+
// Calibration fill 2D
AliTRDCalibraFillHisto *calibra = AliTRDCalibraFillHisto::Instance();
if (!calibra) {
calibra->ResetTrack();
}
- for (Int_t i = 0; i < 1000; i++) {
- clusters[i] = -1;
- }
-
+ // Loop through the TRD planes
for (Int_t iplane = 0; iplane < AliESDtrack::kNPlane; iplane++) {
- int hb = iplane * 10;
+ Int_t hb = iplane * 10;
fHClSearch->Fill(hb);
+ // Get the global time bin numbers for the first an last
+ // local time bin of the given plane
Int_t row0 = GetGlobalTimeBin(0,iplane,GetTimeBinsPerPlane()-1);
Int_t rowlast = GetGlobalTimeBin(0,iplane,0);
+
+ // Get the X coordinates of the propagation layer for the first time bin
Double_t currentx = fTrSec[0]->GetLayer(row0)->GetX();
if (currentx < t.GetX()) {
fHClSearch->Fill(hb+1);
continue;
}
- //
- // Propagate closer to chamber if neccessary
- //
+ // Propagate closer to the current chamber if neccessary
if (currentx > (fgkMaxStep + t.GetX())) {
if (!PropagateToX(t,currentx-fgkMaxStep,fgkMaxStep)) {
fHClSearch->Fill(hb+2);
break;
}
}
+
+ // Rotate track to adjacent sector if neccessary
if (!AdjustSector(&t)) {
fHClSearch->Fill(hb+3);
break;
}
+
+ // Check whether azimuthal angle is getting too large
if (TMath::Abs(t.GetSnp()) > fgkMaxSnp) {
fHClSearch->Fill(hb+4);
break;
}
- //
- // Get material budget inside of chamber
- //
Double_t xyz0[3];
Double_t xyz1[3];
Double_t param[7];
Double_t x;
Double_t y;
Double_t z;
- // Starting global position
+ // Global start position (beginning of chamber)
t.GetXYZ(xyz0);
- // End global position
+ // X-position of the end of the chamber
x = fTrSec[0]->GetLayer(rowlast)->GetX();
+ // Get local Y and Z at the X-position of the end of the chamber
if (!t.GetProlongation(x,y,z)) {
fHClSearch->Fill(hb+5);
break;
}
+ // Global end position (end of chamber)
xyz1[0] = x * TMath::Cos(t.GetAlpha()) - y * TMath::Sin(t.GetAlpha());
xyz1[1] = +x * TMath::Sin(t.GetAlpha()) + y * TMath::Cos(t.GetAlpha());
xyz1[2] = z;
+
+ // Calculate the mean material budget along the path inside the chamber
AliTracker::MeanMaterialBudget(xyz0,xyz1,param);
+ // The mean propagation parameters (density*length and radiation length)
xrho = param[0]*param[4];
- xx0 = param[1]; // Get mean propagation parameters
+ xx0 = param[1];
- //
- // Find clusters
- //
- sector = t.GetSector();
+ // Find the clusters and tracklet along the path inside the chamber
+ sector = t.GetSector();
Float_t ncl = FindClusters(sector,row0,rowlast,&t,clusters,tracklet);
fHNCl->Fill(tracklet.GetN());
+ // Discard if in less than 1/3 of the available timebins
+ // clusters are found
if (tracklet.GetN() < GetTimeBinsPerPlane()/3) {
fHClSearch->Fill(hb+6);
continue;
}
+ //!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
//
// Propagate and update track
}
return expectedNumberOfClusters;
+
}
//_____________________________________________________________________________
Int_t AliTRDtracker::PropagateToX(AliTRDtrack &t, Double_t xToGo, Double_t maxStep)
{
//
- // Starting from current radial position of track <t> this function
+ // Starting from current X-position of track <t> this function
// extrapolates the track up to radial position <xToGo>.
// Returns 1 if track reaches the plane, and 0 otherwise
//
const Double_t kEpsilon = 0.00001;
- //Double_t tanmax = TMath::Tan(0.5*AliTRDgeometry::GetAlpha());
+
+ // Current track X-position
Double_t xpos = t.GetX();
- Double_t dir = (xpos<xToGo) ? 1.0 : -1.0;
- while (((xToGo-xpos)*dir) > kEpsilon) {
+ // Direction: inward or outward
+ Double_t dir = (xpos < xToGo) ? 1.0 : -1.0;
- Double_t step = dir * TMath::Min(TMath::Abs(xToGo-xpos),maxStep);
+ while (((xToGo - xpos) * dir) > kEpsilon) {
Double_t xyz0[3];
Double_t xyz1[3];
Double_t x;
Double_t y;
Double_t z;
- // Starting global position
- t.GetXYZ(xyz0);
+
+ // The next step size
+ Double_t step = dir * TMath::Min(TMath::Abs(xToGo-xpos),maxStep);
+
+ // Get the global position of the starting point
+ t.GetXYZ(xyz0);
+
+ // X-position after next step
x = xpos + step;
+ // Get local Y and Z at the X-position of the next step
if (!t.GetProlongation(x,y,z)) {
- return 0; // No prolongation
+ return 0; // No prolongation possible
}
+ // The global position of the end point of this prolongation step
xyz1[0] = x * TMath::Cos(t.GetAlpha()) - y * TMath::Sin(t.GetAlpha());
xyz1[1] = +x * TMath::Sin(t.GetAlpha()) + y * TMath::Cos(t.GetAlpha());
xyz1[2] = z;
- AliTracker::MeanMaterialBudget(xyz0,xyz1,param);
+ // Calculate the mean material budget between start and
+ // end point of this prolongation step
+ AliTracker::MeanMaterialBudget(xyz0,xyz1,param);
+
+ // Propagate the track to the X-position after the next step
if (!t.PropagateTo(x,param[1],param[0]*param[4])) {
return 0;
}
+
+ // Rotate the track if necessary
AdjustSector(&t);
+
+ // New track X-position
xpos = t.GetX();
}
//
if (ReadClusters(fClusters,cTree)) {
- AliError("Problem with reading the clusters !");
- return 1;
+ AliError("Problem with reading the clusters !");
+ return 1;
}
- Int_t ncl = fClusters->GetEntriesFast();
+ Int_t ncl = fClusters->GetEntriesFast();
fNclusters = ncl;
AliInfo(Form("Sorting %d clusters",ncl));
UInt_t index;
- for (Int_t ichamber = 0; ichamber < 5; ichamber++) {
- for (Int_t isector = 0; isector < 18; isector++) {
- fHoles[ichamber][isector] = kTRUE;
- }
- }
-
while (ncl--) {
AliTRDcluster *c = (AliTRDcluster *) fClusters->UncheckedAt(ncl);
Int_t plane = fGeom->GetPlane(detector);
Int_t trackingSector = sector;
- if (c->GetQ() > 10) {
- Int_t chamber = fGeom->GetChamber(detector);
- fHoles[chamber][trackingSector] = kFALSE;
- }
+ //if (c->GetQ() > 10) {
+ // Int_t chamber = fGeom->GetChamber(detector);
+ //}
Int_t gtb = fTrSec[trackingSector]->CookTimeBinIndex(plane,localTimeBin);
if (gtb < 0) {
Int_t AliTRDtracker::ReadClusters(TObjArray *array, TTree *clusterTree) const
{
//
- // Reads AliTRDclusters (option >= 0) or AliTRDrecPoints (option < 0)
- // from the file. The names of the cluster tree and branches
+ // Reads AliTRDclusters from the file.
+ // The names of the cluster tree and branches
// should match the ones used in AliTRDclusterizer::WriteClusters()
//
}
+//_____________________________________________________________________________
+AliTRDtracker::AliTRDtrackingSector
+ ::~AliTRDtrackingSector()
+{
+ //
+ // Destructor
+ //
+
+ for (Int_t i = 0; i < fN; i++) {
+ delete fLayers[i];
+ }
+
+}
+
//_____________________________________________________________________________
Int_t AliTRDtracker::AliTRDtrackingSector
::CookTimeBinIndex(Int_t plane, Int_t localTB) const
{
//
- // depending on the digitization parameters calculates "global"
- // time bin index for timebin <localTB> in plane <plane>
- //
+ // Depending on the digitization parameters calculates global
+ // (i.e. for a whole TRD stack of 6 planes) time bin index for
+ // timebin <localTB> in plane <plane>
//
Int_t tbPerPlane = AliTRDcalibDB::Instance()->GetNumberOfTimeBins();
//_____________________________________________________________________________
Int_t AliTRDtracker::FindClusters(Int_t sector, Int_t t0, Int_t t1
, AliTRDtrack *track
- , Int_t *clusters, AliTRDtracklet &tracklet)
+ , Int_t *clusters
+ , AliTRDtracklet &tracklet)
{
//
- //
- // Try to find nearest clusters to the track in timebins from t0 to t1
- //
+ // Try to find the nearest clusters to the track in the time bins
+ // between <t0> and <t1>.
+ // Also the corresponding tracklet is calculated
// Correction coeficients - depend on TRD parameters - to be changed accordingly
//
- Double_t x[100];
- Double_t yt[100];
- Double_t zt[100];
- Double_t xmean = 0.0; // Reference x
- Double_t dz[10][100];
- Double_t dy[10][100];
- Float_t zmean[100];
- Float_t nmean[100];
+ const Int_t kN1 = 100;
+ const Int_t kN2 = 10;
+
+ Double_t x[kN1];
+ Double_t yt[kN1];
+ Double_t zt[kN1];
+ Float_t zmean[kN1];
+ Float_t nmean[kN1];
+
+ Double_t dz[kN2][kN1];
+ Double_t dy[kN2][kN1];
+ Int_t indexes[kN2][kN1]; // Indexes of the clusters in the road
+ Int_t best[kN2][kN1]; // Index of best matching cluster
+ AliTRDcluster *cl[kN2][kN1]; // Pointers to the clusters in the road
+
+ Double_t xmean = 0.0; // Reference x
Int_t clfound = 0;
- Int_t indexes[10][100]; // Indexes of the clusters in the road
- Int_t best[10][100]; // Index of best matching cluster
- AliTRDcluster *cl[10][100]; // Pointers to the clusters in the road
-
- for (Int_t it = 0; it < 100; it++) {
- x[it] = 0.0;
- yt[it] = 0.0;
- zt[it] = 0.0;
+
+ // Initialize the arrays
+ for (Int_t it = 0; it < kN1; it++) {
+
+ x[it] = 0.0;
+ yt[it] = 0.0;
+ zt[it] = 0.0;
clusters[it] = -2;
- zmean[it] = 0.0;
- nmean[it] = 0.0;
- for (Int_t ih = 0; ih < 10;ih++) {
- indexes[ih][it] = -2; // Reset indexes1
+ zmean[it] = 0.0;
+ nmean[it] = 0.0;
+
+ for (Int_t ih = 0; ih < kN2; ih++) {
+ indexes[ih][it] = -2;
cl[ih][it] = 0;
dz[ih][it] = -100.0;
dy[ih][it] = -100.0;
best[ih][it] = 0;
}
+
}
Double_t x0 = track->GetX();
Int_t plane = -1;
Int_t detector = -1;
Float_t padlength = 0.0;
+
AliTRDtrack track2(* track);
Float_t snpy = track->GetSnp();
Float_t tany = TMath::Sqrt(snpy*snpy / (1.0 - snpy*snpy));
if (road > 6.0) {
road = 6.0;
}
- //road = 20.0;
for (Int_t it = 0; it < t1-t0; it++) {
//
// Find 2 nearest cluster at given time bin
//
- int checkPoint[4] = {0,0,0,0};
- double minY = 123456789;
- double minD[2] = {1,1};
+ Int_t checkPoint[4] = { 0, 0, 0, 0 };
+ Double_t minY = 123456789.0;
+ Double_t minD[2] = { 1.0, 1.0 };
for (Int_t i = timeBin.Find(y - road); i < maxn; i++) {
- //for (Int_t i = 0; i < maxn; i++) {
AliTRDcluster *c = (AliTRDcluster *) (timeBin[i]);
h01 = GetTiltFactor(c);
padlength = TMath::Sqrt(c->GetSigmaZ2() * 12.0);
}
- //if (c->GetLocalTimeBin()==0) continue;
if (c->GetY() > (y + road)) {
break;
}
fHDeltaX->Fill(c->GetX() - x[it]);
- //printf("%f\t%f\t%f \n", c->GetX(), x[it], c->GetX()-x[it]);
if (TMath::Abs(c->GetY()-y) < TMath::Abs(minY)) {
- minY = c->GetY()-y;
- minD[0] = c->GetY()-y;
- minD[1] = c->GetZ()-z;
+ minY = c->GetY() - y;
+ minD[0] = c->GetY() - y;
+ minD[1] = c->GetZ() - z;
}
checkPoint[0]++;
checkPoint[1]++;
Double_t dist = TMath::Abs(c->GetZ() - z);
- if (dist > (0.5 * padlength + 6.0 * sigmaz)) { // 0.5
+ if (dist > (0.5 * padlength + 6.0 * sigmaz)) {
continue; // 6 sigma boundary cut
}
checkPoint[2]++;
- Double_t cost = 0.0;
// Sigma boundary cost function
+ Double_t cost = 0.0;
if (dist> (0.5 * padlength - sigmaz)){
cost = (dist - 0.5*padlength) / (2.0 * sigmaz);
if (cost > -1) {
cost = 0.0;
}
}
- //Int_t label = TMath::Abs(track->GetLabel());
- //if (c->GetLabel(0)!=label && c->GetLabel(1)!=label&&c->GetLabel(2)!=label) continue;
chi2 = track2.GetPredictedChi2(c,h01) + cost;
clfound++;
}
checkPoint[3]++;
- detector = c->GetDetector();
// Store the clusters in the road
+ detector = c->GetDetector();
for (Int_t ih = 2; ih < 9; ih++) {
if (cl[ih][it] == 0) {
cl[ih][it] = c;
}
- for(int iCheckPoint = 0; iCheckPoint<4; iCheckPoint++)
+ for(int iCheckPoint = 0; iCheckPoint<4; iCheckPoint++) {
fHFindCl[iCheckPoint]->Fill(checkPoint[iCheckPoint]);
+ }
if (checkPoint[3]) {
- if (track->GetSignedPt() > 0) fHMinYPos->Fill(minY);
- else fHMinYNeg->Fill(minY);
-
- fHMinD->Fill(minD[0], minD[1]);
- }
+ if (track->GetSignedPt() > 0) {
+ fHMinYPos->Fill(minY);
+ }
+ else {
+ fHMinYNeg->Fill(minY);
+ }
+ fHMinD->Fill(minD[0],minD[1]);
+ }
if (cl[0][it]) {
nfound++;
//
// Choose one of the variants
//
- Int_t changes[10];
Float_t sumz = 0.0;
Float_t sum = 0.0;
Double_t sumdy = 0.0;
Double_t sumx2 = 0.0;
Double_t mpads = 0.0;
- Int_t ngood[10];
- Int_t nbad[10];
+ Int_t changes[kN2];
+
+ Int_t ngood[kN2];
+ Int_t nbad[kN2];
- Double_t meanz[10];
- Double_t moffset[10]; // Mean offset
- Double_t mean[10]; // Mean value
- Double_t angle[10]; // Angle
+ Double_t meanz[kN2];
+ Double_t moffset[kN2]; // Mean offset
+ Double_t mean[kN2]; // Mean value
+ Double_t angle[kN2]; // Angle
- Double_t smoffset[10]; // Sigma of mean offset
- Double_t smean[10]; // Sigma of mean value
- Double_t sangle[10]; // Sigma of angle
- Double_t smeanangle[10]; // Correlation
+ Double_t smoffset[kN2]; // Sigma of mean offset
+ Double_t smean[kN2]; // Sigma of mean value
+ Double_t sangle[kN2]; // Sigma of angle
+ Double_t smeanangle[kN2]; // Correlation
- Double_t sigmas[10];
- Double_t tchi2s[10]; // Chi2s for tracklet
+ Double_t sigmas[kN2];
+ Double_t tchi2s[kN2]; // Chi2s for tracklet
- for (Int_t it = 0; it < 10; it++) {
+ for (Int_t it = 0; it < kN2; it++) {
ngood[it] = 0;
nbad[it] = 0;
meanz[it] = 0.0;
- moffset[it] = 0.0; // Mean offset
- mean[it] = 0.0; // Mean value
- angle[it] = 0.0; // Angle
+ moffset[it] = 0.0; // Mean offset
+ mean[it] = 0.0; // Mean value
+ angle[it] = 0.0; // Angle
smoffset[it] = 1.0e5; // Sigma of mean offset
smean[it] = 1.0e5; // Sigma of mean value
sangle[it] = 1.0e5; // Sigma of angle
- smeanangle[it] = 0.0; // Correlation
+ smeanangle[it] = 0.0; // Correlation
sigmas[it] = 1.0e5;
tchi2s[it] = 1.0e5; // Chi2s for tracklet
changes[iter]++;
}
- Double_t dx = x[it]-xmean; // Distance to reference x
+ // Distance to reference x
+ Double_t dx = x[it]-xmean;
sumz += cl[best[iter][it]][it]->GetZ();
sum++;
sumdy += dy[best[iter][it]][it];
}
//
- // calculates line parameters
+ // Calculates line parameters
//
Double_t det = sum*sumx2 - sumx*sumx;
angle[iter] = (sum*sumxy - sumx*sumdy) / det;
mean[iter] = (sumx2*sumdy - sumx*sumxy) / det;
- meanz[iter] = sumz / sum;
+ meanz[iter] = sumz / sum;
moffset[iter] = sumdy / sum;
mpads /= sum; // Mean number of pads
Double_t mindist = 100000.0;
Int_t ihbest = 0;
- for (Int_t ih = 0; ih < 10; ih++) {
+ for (Int_t ih = 0; ih < kN2; ih++) {
if (!cl[ih][it]) {
break;
}
ihbest = ih;
}
}
+
best[iter+1][it] = ihbest;
+
}
//
Double_t sy2 = smean[iter] + track->GetSigmaY2();
Double_t sa2 = sangle[iter] + track->GetSigmaSnp2(); // track->fCee;
Double_t say = track->GetSigmaSnpY(); // track->fCey;
- //Double_t chi20 = mean[bestiter]*mean[bestiter ] / sy2+angle[bestiter]*angle[bestiter]/sa2;
- //Double_t chi21 = mean[iter]*mean[iter] / sy2+angle[iter]*angle[iter]/sa2;
Double_t detchi = sy2*sa2 - say*say;
Double_t invers[3] = {sa2/detchi,sy2/detchi,-say/detchi}; // Inverse value of covariance matrix
Short_t maxpos5 = -1;
Float_t maxcharge5 = 0.0;
- //if (tchi2s[bestiter]>25.) sigma2*=tchi2s[bestiter]/25.;
- //if (tchi2s[bestiter]>25.) sigma2=1000.; // dont'accept
-
Double_t exB = AliTRDcalibDB::Instance()->GetOmegaTau(AliTRDcalibDB::Instance()->GetVdrift(0,0,0)
,-AliTracker::GetBz()*0.1);
Double_t expectederr = sigma2*sigma2 + 0.01*0.01;
expectederr += changes[bestiter] * 0.01;
}
expectederr += (0.03 * (tany-exB)*(tany-exB)) * 15.0;
- //if (tchi2s[bestiter]>18.) expectederr*= tchi2s[bestiter]/18.;
- //expectederr+=10000;
for (Int_t it = 0; it < t1 - t0; it++) {
continue;
}
- cl[best[bestiter][it]][it]->SetSigmaY2(expectederr); // Set cluster error
+ // Set cluster error
+ cl[best[bestiter][it]][it]->SetSigmaY2(expectederr);
if (!cl[best[bestiter][it]][it]->IsUsed()) {
cl[best[bestiter][it]][it]->SetY(cl[best[bestiter][it]][it]->GetY());
- //cl[best[bestiter][it]][it]->Use();
}
// Time bins with maximal charge
clusters[it+t0] = indexes[best[bestiter][it]][it];
- // Still needed ????
- //if (cl[best[bestiter][it]][it]->GetLocalTimeBin()>4 &&
- //cl[best[bestiter][it]][it]->GetLocalTimeBin()<18) clusters[it+t0]
- // = indexes[best[bestiter][it]][it]; //Test
-
}
- //
// Set tracklet parameters
- //
Double_t trackleterr2 = smoffset[bestiter] + 0.01*0.01;
if (mpads > 3.5) {
trackleterr2 += (mpads - 3.5) * 0.04;
trackleterr2 *= TMath::Max(14.0 - nfound,1.0);
trackleterr2 += 0.2 * (tany-exB)*(tany-exB);
- // Set tracklet parameters
tracklet.Set(xmean
,track2.GetY() + moffset[bestiter]
,meanz[bestiter]
new(array1[it]) AliTRDcluster(dummy);
}
}
+
TGraph graph0(t1-t0,x,dy0);
TGraph graph1(t1-t0,x,dyb);
TGraph graphy(t1-t0,x,yt);
// The size of output array has is 2*n
//
- if (n <= 0)
+ if (n <= 0) {
return 0;
+ }
Int_t *sindexS = new Int_t[n]; // Temporary array for sorting
Int_t *sindexF = new Int_t[2*n];
}
else {
track->CookdEdx();
- track->CookdEdxTimBin();
+ track->CookdEdxTimBin(-1);
CookLabel(track,0.9);
}
return track;
-}
-//////////////////////////////////////////////////////////////////////////////////////////
+}
-void AliTRDtracker::InitLogHists() {
+//_____________________________________________________________________________
+void AliTRDtracker::InitLogHists()
+{
+ //
+ // Create the log histograms
+ //
- fHBackfit = new TH1D("logTRD_backfit", "", 40, -0.5, 39.5);
- fHRefit = new TH1D("logTRD_refit", "", 40, -0.5, 39.5);
- fHClSearch = new TH1D("logTRD_clSearch", "", 60, -0.5, 59.5);
+ fHBackfit = new TH1D("logTRD_backfit" ,""
+ , 40,-0.5, 39.5);
+ fHRefit = new TH1D("logTRD_refit" ,""
+ , 40,-0.5, 39.5);
+ fHClSearch = new TH1D("logTRD_clSearch",""
+ , 60,-0.5, 59.5);
- fHX = new TH1D("logTRD_X", ";x (cm)", 200, 50, 400);
- fHNCl = new TH1D("logTRD_ncl", "", 40, -0.5, 39.5);
- fHNClTrack = new TH1D("logTRD_nclTrack", "", 180, -0.5, 179.5);
+ fHX = new TH1D("logTRD_X" ,";x (cm)"
+ , 200, 50, 400);
+ fHNCl = new TH1D("logTRD_ncl" ,""
+ , 40,-0.5, 39.5);
+ fHNClTrack = new TH1D("logTRD_nclTrack",""
+ , 180,-0.5,179.5);
- fHMinYPos = new TH1D("logTRD_minYPos", ";#delta Y (cm)", 400, -6, 6);
- fHMinYNeg = new TH1D("logTRD_minYNeg", ";#delta Y (cm)", 400, -6, 6);
- fHMinZ = new TH1D("logTRD_minZ", ";#delta Z (cm)", 400, -20, 20);
- fHMinD = new TH2D("logTRD_minD", ";#delta Y (cm);#delta Z (cm)", 100, -6, 6, 100, -50, 50);
+ fHMinYPos = new TH1D("logTRD_minYPos" ,";#delta Y (cm)"
+ , 400, -6, 6);
+ fHMinYNeg = new TH1D("logTRD_minYNeg" ,";#delta Y (cm)"
+ , 400, -6, 6);
+ fHMinZ = new TH1D("logTRD_minZ" ,";#delta Z (cm)"
+ , 400, -20, 20);
+ fHMinD = new TH2D("logTRD_minD" ,";#delta Y (cm);#delta Z (cm)"
+ , 100, -6, 6
+ , 100, -50, 50);
- fHDeltaX = new TH1D("logTRD_deltaX", ";#delta X (cm)", 100, -5, 5);
- fHXCl = new TH1D("logTRD_xCl", ";cluster x position (cm)", 1000, 280, 380);
+ fHDeltaX = new TH1D("logTRD_deltaX" ,";#delta X (cm)"
+ , 100, -5, 5);
+ fHXCl = new TH1D("logTRD_xCl" ,";cluster x position (cm)"
+ ,1000, 280, 380);
- const char *nameFindCl[4] = {"logTRD_clY", "logTRD_clZ", "logTRD_clB", "logTRD_clG"};
+ const Char_t *nameFindCl[4] = { "logTRD_clY"
+ , "logTRD_clZ"
+ , "logTRD_clB"
+ , "logTRD_clG" };
- for(int i=0; i<4; i++) {
- fHFindCl[i] = new TH1D(nameFindCl[i], "", 30, -0.5, 29.5);
+ for (Int_t i = 0; i < 4; i++) {
+ fHFindCl[i] = new TH1D(nameFindCl[i],"",30,-0.5,29.5);
}
-}
-//////////////////////////////////////////////////////////////////////////////////////////
+}
-void AliTRDtracker::SaveLogHists() {
+//_____________________________________________________________________________
+void AliTRDtracker::SaveLogHists()
+{
+ //
+ // Save the log histograms in AliESDs.root
+ //
- TDirectory *sav = gDirectory;
- TFile *logFile = 0;
+ TDirectory *sav = gDirectory;
+ TFile *logFile = 0;
TSeqCollection *col = gROOT->GetListOfFiles();
- int N = col->GetEntries();
- for(int i=0; i<N; i++) {
- logFile = (TFile*)col->At(i);
- if (strstr(logFile->GetName(), "AliESDs.root")) break;
+ Int_t nn = col->GetEntries();
+ for (Int_t i = 0; i < nn; i++) {
+ logFile = (TFile *) col->At(i);
+ if (strstr(logFile->GetName(),"AliESDs.root")) {
+ break;
+ }
}
logFile->cd();
- fHBackfit->Write(fHBackfit->GetName(), TObject::kOverwrite);
- fHRefit->Write(fHRefit->GetName(), TObject::kOverwrite);
- fHClSearch->Write(fHClSearch->GetName(), TObject::kOverwrite);
- fHX->Write(fHX->GetName(), TObject::kOverwrite);
- fHNCl->Write(fHNCl->GetName(), TObject::kOverwrite);
- fHNClTrack->Write(fHNClTrack->GetName(), TObject::kOverwrite);
-
- fHMinYPos->Write(fHMinYPos->GetName(), TObject::kOverwrite);
- fHMinYNeg->Write(fHMinYNeg->GetName(), TObject::kOverwrite);
- fHMinD->Write(fHMinD->GetName(), TObject::kOverwrite);
- fHMinZ->Write(fHMinZ->GetName(), TObject::kOverwrite);
-
- fHDeltaX->Write(fHDeltaX->GetName(), TObject::kOverwrite);
- fHXCl->Write(fHXCl->GetName(), TObject::kOverwrite);
+ fHBackfit->Write(fHBackfit->GetName(),TObject::kOverwrite);
+ fHRefit->Write(fHRefit->GetName(),TObject::kOverwrite);
+ fHClSearch->Write(fHClSearch->GetName(),TObject::kOverwrite);
+ fHX->Write(fHX->GetName(),TObject::kOverwrite);
+ fHNCl->Write(fHNCl->GetName(),TObject::kOverwrite);
+ fHNClTrack->Write(fHNClTrack->GetName(),TObject::kOverwrite);
+
+ fHMinYPos->Write(fHMinYPos->GetName(),TObject::kOverwrite);
+ fHMinYNeg->Write(fHMinYNeg->GetName(),TObject::kOverwrite);
+ fHMinD->Write(fHMinD->GetName(),TObject::kOverwrite);
+ fHMinZ->Write(fHMinZ->GetName(),TObject::kOverwrite);
+
+ fHDeltaX->Write(fHDeltaX->GetName(),TObject::kOverwrite);
+ fHXCl->Write(fHXCl->GetName(),TObject::kOverwrite);
- for(int i=0; i<4; i++)
- fHFindCl[i]->Write(fHFindCl[i]->GetName(), TObject::kOverwrite);
+ for (Int_t i = 0; i < 4; i++) {
+ fHFindCl[i]->Write(fHFindCl[i]->GetName(),TObject::kOverwrite);
+ }
logFile->Flush();
sav->cd();
-}
-//////////////////////////////////////////////////////////////////////////////////////////
+}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff