X-Git-Url: http://git.uio.no/git/?a=blobdiff_plain;f=TRD%2FAliTRDtrackV1.cxx;h=c42ba864465e7ac9fe0bf77d6d5081c338f4e3e1;hb=d9b3567cd3990561c35cff39ff29099f12033841;hp=77cfdaa5d0affba8c87f61099193454301769d9f;hpb=22a4ab0ca7a18d00e3554bec14a2cbe953701897;p=u%2Fmrichter%2FAliRoot.git diff --git a/TRD/AliTRDtrackV1.cxx b/TRD/AliTRDtrackV1.cxx index 77cfdaa5d0a..c42ba864465 100644 --- a/TRD/AliTRDtrackV1.cxx +++ b/TRD/AliTRDtrackV1.cxx @@ -15,6 +15,7 @@ /* $Id$ */ +#include "AliLog.h" #include "AliESDtrack.h" #include "AliTracker.h" @@ -39,9 +40,13 @@ ClassImp(AliTRDtrackV1) //_______________________________________________________________ AliTRDtrackV1::AliTRDtrackV1() : AliKalmanTrack() - ,fPIDquality(0) + ,fStatus(0) + ,fESDid(0) ,fDE(0.) - ,fBackupTrack(0x0) + ,fkReconstructor(NULL) + ,fBackupTrack(NULL) + ,fTrackLow(NULL) + ,fTrackHigh(NULL) { // // Default constructor @@ -54,16 +59,20 @@ AliTRDtrackV1::AliTRDtrackV1() : AliKalmanTrack() for(int is =0; isGetN(); } - } + } AliKalmanTrack::SetNumberOfClusters(ncls); for(int i =0; i<3; i++) fBudget[i] = 0.; Float_t pid = 1./AliPID::kSPECIES; for(int is =0; isGetClusters(ic))) continue; for (Int_t k = 0; k < 3; k++) { label = c->GetLabel(k); @@ -249,7 +324,6 @@ Bool_t AliTRDtrackV1::CookLabel(Float_t wrong) max = s[i][1]; label = s[i][0]; } - if ((1. - Float_t(max)/GetNumberOfClusters()) > wrong) label = -label; SetLabel(label); @@ -260,40 +334,28 @@ Bool_t AliTRDtrackV1::CookLabel(Float_t wrong) //_______________________________________________________________ Bool_t AliTRDtrackV1::CookPID() { - // - // Cook the PID information - // +// +// Cook the PID information for the track by delegating the omonim function of the tracklets. +// Computes the number of tracklets used. The tracklet information are considered independent. +// For the moment no global track measurement of PID is performed as for example to estimate +// bremsstrahlung probability based on global chi2 of the track. +// +// The status bit AliESDtrack::kTRDpid is set during the call of AliTRDtrackV1::UpdateESDtrack().The PID performance of the +//TRD for tracks with 6 tacklets is displayed below. +//Begin_Html +// +//End_Html +// - // Reset the a priori probabilities + /*Reset the a priori probabilities*/ Double_t pid = 1. / AliPID::kSPECIES; - for(int ispec=0; ispecIsOK()) continue; - if(!(prob = fTracklet[ip]->GetProbability())) return kFALSE; - - Int_t nspec = 0; // quality check of tracklet dEdx - for(int ispec=0; ispecIsOK()) continue; + if(!(prob = fTracklet[ip]->GetProbability(kFALSE))) continue; - if (AliTracker::UniformField()) return AliTracker::GetBz(); + Int_t nspec = 0; // quality check of tracklet dEdx + for(int ispec=0; ispecSetPID(); + nPID++; + } + return nPID; +} + +//___________________________________________________________ +UChar_t AliTRDtrackV1::SetNumberOfTrackletsPID(Bool_t recalc) +{ +// Retrieve number of tracklets used for PID calculation. // Recalculated PID at tracklet level by quering the PID DB. + + UChar_t fPIDquality(0); + + // steer PID calculation @ tracklet level + Float_t *prob(NULL); + for(int ip=0; ipIsOK()) continue; + if(!(prob = fTracklet[ip]->GetProbability(recalc))) return 0; - Double_t r[3]; - GetXYZ(r); - return AliTracker::GetBz(r); + Int_t nspec = 0; // quality check of tracklet dEdx + for(int ispec=0; ispecGetN(); continue; } - AliTRDcluster *c = 0x0; - for(Int_t ic=AliTRDseed::knTimebins-1; ic>=0; ic--){ + AliTRDcluster *c = NULL; + for(Int_t ic=AliTRDseedV1::kNclusters; ic--;){ if(!(c = fTracklet[ip]->GetClusters(ic))) continue; if(nGetN(); continue; } - AliTRDcluster *c = 0x0; - for(Int_t ic=AliTRDseed::knTimebins-1; ic>=0; ic--){ + AliTRDcluster *c = NULL; + for(Int_t ic=AliTRDseedV1::kNclusters; ic--;){ if(!(c = fTracklet[ip]->GetClusters(ic))) continue; if(nGetY(), trklt->GetZ()}; + trklt->GetCovAt(trklt->GetX(), cov); + return AliExternalTrackParam::GetPredictedChi2(p, cov); +} + +//_______________________________________________________________ +Int_t AliTRDtrackV1::GetSector() const +{ + return Int_t(GetAlpha()/AliTRDgeometry::GetAlpha() + (GetAlpha()>0. ? 0 : AliTRDgeometry::kNsector)); +} + +//_______________________________________________________________ +Bool_t AliTRDtrackV1::IsEqual(const TObject *o) const +{ + // Checks whether two tracks are equal + if (!o) return kFALSE; + const AliTRDtrackV1 *inTrack = dynamic_cast(o); + if (!inTrack) return kFALSE; - Double_t x = trklt->GetX0(); - Double_t p[2] = { trklt->GetYat(x) - , trklt->GetZat(x) }; - Double_t cov[3]; - trklt->GetCovAt(x, cov); + //if ( fPIDquality != inTrack->GetPIDquality() ) return kFALSE; - return AliExternalTrackParam::GetPredictedChi2(p, cov); + for(Int_t i = 0; i < AliPID::kSPECIES; i++){ + if ( fPID[i] != inTrack->GetPID(i) ) return kFALSE; + } + + for (Int_t i = 0; i < 3; i++){ + if ( fBudget[i] != inTrack->GetBudget(i) ) return kFALSE; + } + if ( fDE != inTrack->GetEdep() ) return kFALSE; + if ( fFakeRatio != inTrack->GetFakeRatio() ) return kFALSE; + if ( fChi2 != inTrack->GetChi2() ) return kFALSE; + if ( fMass != inTrack->GetMass() ) return kFALSE; + if ( fLab != inTrack->GetLabel() ) return kFALSE; + if ( fN != inTrack->GetNumberOfClusters() ) return kFALSE; + if ( AliKalmanTrack::GetIntegratedLength() != inTrack->GetIntegratedLength() ) return kFALSE; + + if ( GetX() != inTrack->GetX() ) return kFALSE; + if ( GetAlpha() != inTrack->GetAlpha() ) return kFALSE; + const Double_t *inP = inTrack->GetParameter(); + const Double_t *curP = GetParameter(); + for (Int_t i = 0; i < 5; i++){ + if ( curP[i] != inP[i]) return kFALSE; + } + const Double_t *inC = inTrack->GetCovariance(); + const Double_t *curC = GetCovariance(); + for (Int_t i = 0; i < 15; i++){ + if ( curC[i] != inC[i]) return kFALSE; + } + + for (Int_t iTracklet = 0; iTracklet < kNplane; iTracklet++){ + AliTRDseedV1 *curTracklet = fTracklet[iTracklet]; + AliTRDseedV1 *inTracklet = inTrack->GetTracklet(iTracklet); + if (curTracklet && inTracklet){ + if (! curTracklet->IsEqual(inTracklet) ) { + curTracklet->Print(); + inTracklet->Print(); + return kFALSE; + } + } else { + // if one tracklet exists, and corresponding + // in other track doesn't - return kFALSE + if(inTracklet || curTracklet) return kFALSE; + } + } + + return kTRUE; } //_______________________________________________________________ Bool_t AliTRDtrackV1::IsElectron() const { -/* reco = fReconstructor->GetRecoParam(); - if(GetPID(0) > reco->GetPIDThreshold(GetP())) return kTRUE;*/ + if(GetPID(0) > fkReconstructor->GetRecoParam()->GetPIDThreshold(GetP())) return kTRUE; return kFALSE; } //_____________________________________________________________________________ -void AliTRDtrackV1::MakeBackupTrack() +Int_t AliTRDtrackV1::MakeBackupTrack() { - // - // Creates a backup track - // +// +// Creates a backup track +// TO DO update quality check of the track. +// + + Float_t occupancy(0.); Int_t n(0), ncls(0); + for(Int_t il(AliTRDgeometry::kNlayer); il--;){ + if(!fTracklet[il]) continue; + n++; + occupancy+=fTracklet[il]->GetOccupancyTB(); + ncls += fTracklet[il]->GetN(); + } + if(!n) return -1; + occupancy/=n; + + //Float_t ratio1 = Float_t(t.GetNumberOfClusters()+1) / Float_t(t.GetNExpected()+1); + + Int_t failedCutId(0); + if(GetChi2()/n > 5.0) failedCutId=1; + if(occupancy < 0.7) failedCutId=2; + //if(ratio1 > 0.6) && + //if(ratio0+ratio1 > 1.5) && + if(GetNCross() != 0) failedCutId=3; + if(TMath::Abs(GetSnp()) > 0.85) failedCutId=4; + if(ncls < 20) failedCutId=5; + + if(failedCutId){ + AliDebug(2, Form("\n" + "chi2/tracklet < 5.0 [%c] %5.2f\n" + "occupancy > 0.7 [%c] %4.2f\n" + "NCross == 0 [%c] %d\n" + "Abs(snp) < 0.85 [%c] %4.2f\n" + "NClusters > 20 [%c] %d" + ,(GetChi2()/n<5.0)?'y':'n', GetChi2()/n + ,(occupancy>0.7)?'y':'n', occupancy + ,(GetNCross()==0)?'y':'n', GetNCross() + ,(TMath::Abs(GetSnp())<0.85)?'y':'n', TMath::Abs(GetSnp()) + ,(ncls>20)?'y':'n', ncls + )); + return failedCutId; + } if(fBackupTrack) { fBackupTrack->~AliTRDtrackV1(); new(fBackupTrack) AliTRDtrackV1((AliTRDtrackV1&)(*this)); - return; + return 0; } fBackupTrack = new AliTRDtrackV1((AliTRDtrackV1&)(*this)); + return 0; } //_____________________________________________________________________________ -Int_t AliTRDtrackV1::GetProlongation(Double_t xk, Double_t &y, Double_t &z) +Int_t AliTRDtrackV1::GetProlongation(Double_t xk, Double_t &y, Double_t &z) const { // // Find a prolongation at given x - // Return 0 if it does not exist + // Return -1 if it does not exist // Double_t bz = GetBz(); - if (!AliExternalTrackParam::GetYAt(xk,bz,y)) return 0; - if (!AliExternalTrackParam::GetZAt(xk,bz,z)) return 0; + if (!AliExternalTrackParam::GetYAt(xk,bz,y)) return -1; + if (!AliExternalTrackParam::GetZAt(xk,bz,z)) return -1; return 1; @@ -433,45 +638,35 @@ Bool_t AliTRDtrackV1::PropagateTo(Double_t xk, Double_t xx0, Double_t xrho) // "xrho" - thickness*density [g/cm^2] // - if (xk == GetX()) { - return kTRUE; - } - - Double_t oldX = GetX(); - Double_t oldY = GetY(); - Double_t oldZ = GetZ(); - - Double_t bz = GetBz(); - - if (!AliExternalTrackParam::PropagateTo(xk,bz)) { - return kFALSE; - } + if (xk == GetX()) return kTRUE; - Double_t x = GetX(); - Double_t y = GetY(); - Double_t z = GetZ(); - - if (oldX < xk) { + Double_t xyz0[3] = {GetX(), GetY(), GetZ()}, // track position BEFORE propagation + b[3]; // magnetic field + GetBxByBz(b); + if(!AliExternalTrackParam::PropagateToBxByBz(xk,b)) return kFALSE; + + // local track position AFTER propagation + Double_t xyz1[3] = {GetX(), GetY(), GetZ()}; + if(xyz0[0] < xk) { xrho = -xrho; if (IsStartedTimeIntegral()) { - Double_t l2 = TMath::Sqrt((x-oldX)*(x-oldX) - + (y-oldY)*(y-oldY) - + (z-oldZ)*(z-oldZ)); - Double_t crv = AliExternalTrackParam::GetC(bz); + Double_t l2 = TMath::Sqrt((xyz1[0]-xyz0[0])*(xyz1[0]-xyz0[0]) + + (xyz1[1]-xyz0[1])*(xyz1[1]-xyz0[1]) + + (xyz1[2]-xyz0[2])*(xyz1[2]-xyz0[2])); + Double_t crv = AliExternalTrackParam::GetC(b[2]); if (TMath::Abs(l2*crv) > 0.0001) { // Make correction for curvature if neccesary - l2 = 0.5 * TMath::Sqrt((x-oldX)*(x-oldX) - + (y-oldY)*(y-oldY)); + l2 = 0.5 * TMath::Sqrt((xyz1[0]-xyz0[0])*(xyz1[0]-xyz0[0]) + + (xyz1[1]-xyz0[1])*(xyz1[1]-xyz0[1])); l2 = 2.0 * TMath::ASin(l2 * crv) / crv; - l2 = TMath::Sqrt(l2*l2 + (z-oldZ)*(z-oldZ)); + l2 = TMath::Sqrt(l2*l2 + (xyz1[2]-xyz0[2])*(xyz1[2]-xyz0[2])); } AddTimeStep(l2); } } - if (!AliExternalTrackParam::CorrectForMeanMaterial(xx0,xrho,GetMass())) { - return kFALSE; - } + if (!AliExternalTrackParam::CorrectForMeanMaterial(xx0, xrho, GetMass())) return kFALSE; + { @@ -533,12 +728,12 @@ Int_t AliTRDtrackV1::PropagateToR(Double_t r,Double_t step) Double_t alpha = TMath::ATan2(xyz0[1],xyz0[0]); Rotate(alpha,kTRUE); GetXYZ(xyz0); - GetProlongation(x,y,z); + if(GetProlongation(x,y,z)<0) return -1; xyz1[0] = x * TMath::Cos(alpha) + y * TMath::Sin(alpha); xyz1[1] = x * TMath::Sin(alpha) - y * TMath::Cos(alpha); xyz1[2] = z; Double_t param[7]; - AliTracker::MeanMaterialBudget(xyz0,xyz1,param); + if(AliTracker::MeanMaterialBudget(xyz0,xyz1,param)<=0.) return -1; if (param[1] <= 0) { param[1] = 100000000; } @@ -550,12 +745,12 @@ Int_t AliTRDtrackV1::PropagateToR(Double_t r,Double_t step) Double_t alpha = TMath::ATan2(xyz0[1],xyz0[0]); Rotate(alpha,kTRUE); GetXYZ(xyz0); - GetProlongation(r,y,z); + if(GetProlongation(r,y,z)<0) return -1; xyz1[0] = r * TMath::Cos(alpha) + y * TMath::Sin(alpha); xyz1[1] = r * TMath::Sin(alpha) - y * TMath::Cos(alpha); xyz1[2] = z; Double_t param[7]; - AliTracker::MeanMaterialBudget(xyz0,xyz1,param); + if(AliTracker::MeanMaterialBudget(xyz0,xyz1,param) <= 0.) return -1; if (param[1] <= 0) { param[1] = 100000000; @@ -566,6 +761,39 @@ Int_t AliTRDtrackV1::PropagateToR(Double_t r,Double_t step) } +//_____________________________________________________________________________ +void AliTRDtrackV1::Print(Option_t *o) const +{ + // Print track status + AliInfo(Form("PID [%4.1f %4.1f %4.1f %4.1f %4.1f]", 1.E2*fPID[0], 1.E2*fPID[1], 1.E2*fPID[2], 1.E2*fPID[3], 1.E2*fPID[4])); + AliInfo(Form("Material[%5.2f %5.2f %5.2f]", fBudget[0], fBudget[1], fBudget[2])); + + AliInfo(Form("x[%7.2f] t[%7.4f] alpha[%f] mass[%f]", GetX(), GetIntegratedLength(), GetAlpha(), fMass)); + AliInfo(Form("Ntr[%1d] NtrPID[%1d] Ncl[%3d] lab[%3d]", GetNumberOfTracklets(), GetNumberOfTrackletsPID(), fN, fLab)); + + printf("|X| = ("); + const Double_t *curP = GetParameter(); + for (Int_t i = 0; i < 5; i++) printf("%7.2f ", curP[i]); + printf(")\n"); + + printf("|V| = \n"); + const Double_t *curC = GetCovariance(); + for (Int_t i = 0, j=4, k=0; i<15; i++, k++){ + printf("%7.2f ", curC[i]); + if(k==j){ + printf("\n"); + k=-1; j--; + } + } + if(strcmp(o, "a")!=0) return; + + for(Int_t ip=0; ipPrint(o); + } +} + + //_____________________________________________________________________________ Bool_t AliTRDtrackV1::Rotate(Double_t alpha, Bool_t absolute) { @@ -588,7 +816,7 @@ void AliTRDtrackV1::SetNumberOfClusters() Int_t ncls = 0; for(int ip=0; ipGetN(); + if(fTracklet[ip] && fTrackletIndex[ip] >= 0) ncls += fTracklet[ip]->GetN(); } AliKalmanTrack::SetNumberOfClusters(ncls); } @@ -603,7 +831,7 @@ void AliTRDtrackV1::SetOwner() if(TestBit(kOwner)) return; for (Int_t ip = 0; ip < kNplane; ip++) { - if(fTrackletIndex[ip] == 0xffff) continue; + if(fTrackletIndex[ip]<0 || !fTracklet[ip]) continue; fTracklet[ip] = new AliTRDseedV1(*fTracklet[ip]); fTracklet[ip]->SetOwner(); } @@ -611,7 +839,7 @@ void AliTRDtrackV1::SetOwner() } //_______________________________________________________________ -void AliTRDtrackV1::SetTracklet(AliTRDseedV1 *trklt, Int_t index) +void AliTRDtrackV1::SetTracklet(AliTRDseedV1 *const trklt, Int_t index) { // // Set the tracklets @@ -622,44 +850,47 @@ void AliTRDtrackV1::SetTracklet(AliTRDseedV1 *trklt, Int_t index) fTrackletIndex[plane] = index; } +//_______________________________________________________________ +void AliTRDtrackV1::SetTrackIn() +{ +// Save location of birth for the TRD track +// If the pointer is not valid allocate memory +// + const AliExternalTrackParam *op = dynamic_cast(this); + + if(fTrackLow){ + fTrackLow->~AliExternalTrackParam(); + new(fTrackLow) AliExternalTrackParam(*op); + } else fTrackLow = new AliExternalTrackParam(*op); +} + +//_______________________________________________________________ +void AliTRDtrackV1::SetTrackOut(const AliExternalTrackParam *op) +{ +// Save location of death for the TRD track +// If the pointer is not valid allocate memory +// + if(!op) op = dynamic_cast(this); + if(fTrackHigh){ + fTrackHigh->~AliExternalTrackParam(); + new(fTrackHigh) AliExternalTrackParam(*op); + } else fTrackHigh = new AliExternalTrackParam(*op); +} + //_______________________________________________________________ void AliTRDtrackV1::UnsetTracklet(Int_t plane) { if(plane<0 && plane >= kNplane) return; - fTrackletIndex[plane] = 0xffff; - fTracklet[plane] = 0x0; + fTrackletIndex[plane] = -1; + fTracklet[plane] = NULL; } //_______________________________________________________________ -Bool_t AliTRDtrackV1::Update(AliTRDseedV1 *trklt, Double_t chisq) +void AliTRDtrackV1::UpdateChi2(Float_t chi2) { - // - // Update track and tracklet parameters - // - - Double_t x = trklt->GetX0(); - Double_t p[2] = { trklt->GetYat(x) - , trklt->GetZat(x) }; - Double_t cov[3]; - trklt->GetCovAt(x, cov); - - if(!AliExternalTrackParam::Update(p, cov)) return kFALSE; - - AliTRDcluster *c = 0x0; - Int_t ic = 0; while(!(c = trklt->GetClusters(ic))) ic++; - AliTracker::FillResiduals(this, p, cov, c->GetVolumeId()); - - - // Register info to track - SetNumberOfClusters(); - SetChi2(GetChi2() + chisq); - - // update tracklet - trklt->SetMomentum(GetP()); - trklt->SetSnp(GetSnp()); - trklt->SetTgl(GetTgl()); - return kTRUE; +// Update chi2/track with one tracklet contribution + SetChi2(GetChi2() + chi2); } //_______________________________________________________________ @@ -669,18 +900,25 @@ void AliTRDtrackV1::UpdateESDtrack(AliESDtrack *track) // Update the TRD PID information in the ESD track // - track->SetNumberOfTRDslices(kNslice); - + Int_t nslices = fkReconstructor->GetRecoParam()->IsEightSlices() ? (Int_t)AliTRDpidUtil::kNNslices : (Int_t)AliTRDpidUtil::kLQslices; + // number of tracklets used for PID calculation + UChar_t nPID = GetNumberOfTrackletsPID(); + // number of tracklets attached to the track + UChar_t nTrk = GetNumberOfTracklets(); + // pack the two numbers together and store them in the ESD + track->SetTRDntracklets(nPID | (nTrk<<3)); + // allocate space to store raw PID signals dEdx & momentum + track->SetNumberOfTRDslices((nslices+2)*AliTRDgeometry::kNlayer); + // store raw signals + Float_t p, sp; Double_t spd; for (Int_t ip = 0; ip < kNplane; ip++) { - if(fTrackletIndex[ip] == 0xffff) continue; - if(!fTracklet[ip]->IsOK()) continue; - fTracklet[ip]->CookdEdx(kNslice); - Float_t *dedx = fTracklet[ip]->GetdEdx(); - for (Int_t js = 0; js < kNslice; js++) track->SetTRDslice(dedx[js], ip, js); + if(fTrackletIndex[ip]<0 || !fTracklet[ip]) continue; + if(!fTracklet[ip]->HasPID()) continue; + const Float_t *dedx = fTracklet[ip]->GetdEdx(); + for (Int_t js = 0; js < nslices; js++, dedx++) track->SetTRDslice(*dedx, ip, js); + p = fTracklet[ip]->GetMomentum(&sp); spd = sp; + track->SetTRDmomentum(p, ip, &spd); } - - // copy PID to ESD - if(!fPIDquality) return; + // store PID probabilities track->SetTRDpid(fPID); - track->SetTRDpidQuality(fPIDquality); }