X-Git-Url: http://git.uio.no/git/?a=blobdiff_plain;f=TRD%2FAliTRDtrackV1.cxx;h=fe868858bc9824c3752985ca2168dcee4e311945;hb=9d188d33b5f9d13bab63f006d999192331c9f799;hp=9b042eb72ba0341029f6e1d23221917d6c638561;hpb=8d2bec9eabc518ef374d274ac24336113ec07476;p=u%2Fmrichter%2FAliRoot.git diff --git a/TRD/AliTRDtrackV1.cxx b/TRD/AliTRDtrackV1.cxx index 9b042eb72ba..fe868858bc9 100644 --- a/TRD/AliTRDtrackV1.cxx +++ b/TRD/AliTRDtrackV1.cxx @@ -1,3 +1,4 @@ + /************************************************************************** * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * * * @@ -23,6 +24,7 @@ #include "AliTRDcluster.h" #include "AliTRDcalibDB.h" #include "AliTRDReconstructor.h" +#include "AliTRDPIDResponse.h" #include "AliTRDrecoParam.h" ClassImp(AliTRDtrackV1) @@ -40,12 +42,13 @@ ClassImp(AliTRDtrackV1) //_______________________________________________________________ AliTRDtrackV1::AliTRDtrackV1() : AliKalmanTrack() - ,fPIDquality(0) + ,fStatus(0) + ,fESDid(0) ,fDE(0.) - ,fReconstructor(0x0) - ,fBackupTrack(0x0) - ,fTrackLow(0x0) - ,fTrackHigh(0x0) + ,fkReconstructor(NULL) + ,fBackupTrack(NULL) + ,fTrackLow(NULL) + ,fTrackHigh(NULL) { // // Default constructor @@ -58,19 +61,20 @@ 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++) { @@ -266,7 +327,6 @@ 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); @@ -277,59 +337,65 @@ Bool_t AliTRDtrackV1::CookLabel(Float_t wrong) //_______________________________________________________________ Bool_t AliTRDtrackV1::CookPID() { - // - // Cook the PID information - // - - // Reset the a priori probabilities - Double_t pid = 1. / AliPID::kSPECIES; - for(int ispec=0; ispec +//End_Html +// + const AliTRDPIDResponse *pidResponse = AliTRDcalibDB::Instance()->GetPIDResponse(fkReconstructor->GetRecoParam()->GetPIDmethod()); + if(!pidResponse){ + AliError("PID Response not available"); + return kFALSE; } - fPIDquality = 0; - - // steer PID calculation @ tracklet level - Float_t *prob = 0x0; + Int_t nslices = pidResponse->GetNumberOfSlices(); + Double_t dEdx[kNplane * (Int_t)AliTRDPIDResponse::kNslicesNN]; + Float_t trackletP[kNplane]; + memset(dEdx, 0, sizeof(Double_t) * kNplane * (Int_t)AliTRDPIDResponse::kNslicesNN); + memset(trackletP, 0, sizeof(Float_t)*kNplane); + for(Int_t iseed = 0; iseed < kNplane; iseed++){ + if(!fTracklet[iseed]) continue; + trackletP[iseed] = fTracklet[iseed]->GetMomentum(); + fTracklet[iseed]->SetPID(); + if(pidResponse->GetPIDmethod() == AliTRDPIDResponse::kLQ1D){ + dEdx[iseed] = fTracklet[iseed]->GetdQdl(); + } else { + fTracklet[iseed]->CookdEdx(nslices); + const Float_t *trackletdEdx = fTracklet[iseed]->GetdEdx(); + for(Int_t islice = 0; islice < nslices; islice++){ + dEdx[iseed*nslices + islice] = trackletdEdx[islice]; + } + } + } + pidResponse->GetResponse(nslices, dEdx, trackletP, fPID); + return kTRUE; +} + +//___________________________________________________________ +UChar_t AliTRDtrackV1::GetNumberOfTrackletsPID() const +{ +// Retrieve number of tracklets used for PID calculation. + + UChar_t nPID = 0; for(int ip=0; ipIsOK()) continue; - if(!(prob = fTracklet[ip]->GetProbability())) return kFALSE; - - Int_t nspec = 0; // quality check of tracklet dEdx - for(int ispec=0; ispecGetN(); continue; } - AliTRDcluster *c = 0x0; + AliTRDcluster *c = NULL; for(Int_t ic=AliTRDseedV1::kNclusters; ic--;){ if(!(c = fTracklet[ip]->GetClusters(ic))) continue; @@ -345,12 +411,13 @@ AliTRDcluster* AliTRDtrackV1::GetCluster(Int_t id) return c; } } - return 0x0; + return NULL; } //_______________________________________________________________ Int_t AliTRDtrackV1::GetClusterIndex(Int_t id) const { + // Get the cluster index at a certain position in the track Int_t n = 0; for(Int_t ip=0; ipGetN(); continue; } - AliTRDcluster *c = 0x0; for(Int_t ic=AliTRDseedV1::kNclusters; ic--;){ - if(!(c = fTracklet[ip]->GetClusters(ic))) continue; - + if(!(fTracklet[ip]->GetClusters(ic))) continue; if(nGetIndexes(ic); } @@ -370,61 +435,56 @@ Int_t AliTRDtrackV1::GetClusterIndex(Int_t id) const } //_______________________________________________________________ -Double_t AliTRDtrackV1::GetPredictedChi2(const AliTRDseedV1 *trklt) const +Double_t AliTRDtrackV1::GetPredictedChi2(const AliTRDseedV1 *trklt, Double_t *cov) const { - // - // Get the predicted chi2 - // - - Double_t x = trklt->GetX0(); - Double_t p[2] = { trklt->GetYat(x) - , trklt->GetZat(x) }; - Double_t cov[3]; - trklt->GetCovAt(x, cov); - - const Double_t *cc = GetCovariance(); - Double_t dy = p[0]-GetY(); dy*=dy; - Double_t s2 = cov[0]+cc[0]; - return s2 > 0. ? dy/s2 : 0.; - //return AliExternalTrackParam::GetPredictedChi2(p, cov); +// Compute chi2 between tracklet and track. The value is calculated at the radial position of the track +// equal to the reference radial position of the tracklet (see AliTRDseedV1) +// +// The chi2 estimator is computed according to the following formula +// BEGIN_LATEX +// #chi^{2}=(X_{trklt}-X_{track})(C_{trklt}+C_{track})^{-1}(X_{trklt}-X_{track})^{T} +// END_LATEX +// where X=(y z), the position of the track/tracklet in the yz plane +// + + Double_t p[2] = { trklt->GetY(), 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; - if ( fPIDquality != inTrack->GetPIDquality() ) return kFALSE; - - for(Int_t i = 0; i < AliPID::kSPECIES; i++){ - if ( fPID[i] != inTrack->GetPID(i) ) return kFALSE; - } + //if ( fPIDquality != inTrack->GetPIDquality() ) 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; - } + if(memcmp(fPID, inTrack->fPID, AliPID::kSPECIES*sizeof(Double32_t))) return kFALSE; + if(memcmp(fBudget, inTrack->fBudget, 3*sizeof(Double32_t))) return kFALSE; + if(memcmp(&fDE, &inTrack->fDE, sizeof(Double32_t))) return kFALSE; + if(memcmp(&fFakeRatio, &inTrack->fFakeRatio, sizeof(Double32_t))) return kFALSE; + if(memcmp(&fChi2, &inTrack->fChi2, sizeof(Double32_t))) return kFALSE; + if(memcmp(&fMass, &inTrack->fMass, sizeof(Double32_t))) return kFALSE; + if( fLab != inTrack->fLab ) return kFALSE; + if( fN != inTrack->fN ) return kFALSE; + Double32_t l(0.), in(0.); + l = GetIntegratedLength(); in = inTrack->GetIntegratedLength(); + if(memcmp(&l, &in, sizeof(Double32_t))) return kFALSE; + l=GetX(); in=inTrack->GetX(); + if(memcmp(&l, &in, sizeof(Double32_t))) return kFALSE; + l = GetAlpha(); in = inTrack->GetAlpha(); + if(memcmp(&l, &in, sizeof(Double32_t))) return kFALSE; + if(memcmp(GetParameter(), inTrack->GetParameter(), 5*sizeof(Double32_t))) return kFALSE; + if(memcmp(GetCovariance(), inTrack->GetCovariance(), 15*sizeof(Double32_t))) return kFALSE; for (Int_t iTracklet = 0; iTracklet < kNplane; iTracklet++){ AliTRDseedV1 *curTracklet = fTracklet[iTracklet]; @@ -448,37 +508,76 @@ Bool_t AliTRDtrackV1::IsEqual(const TObject *o) const //_______________________________________________________________ Bool_t AliTRDtrackV1::IsElectron() const { - if(GetPID(0) > fReconstructor->GetRecoParam()->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]->GetTBoccupancy()/AliTRDseedV1::kNtb; + 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; @@ -495,42 +594,33 @@ 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(); + if (TMath::Abs(xk - GetX()) x1[%6.2f] dx[%6.2f] rho[%f]\n", xyz0[0], xyz1[0], xyz0[0]-xk, xrho/TMath::Abs(xyz0[0]-xk)); + 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; @@ -594,7 +684,7 @@ 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; @@ -611,7 +701,7 @@ 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; @@ -630,13 +720,13 @@ Int_t AliTRDtrackV1::PropagateToR(Double_t r,Double_t step) //_____________________________________________________________________________ void AliTRDtrackV1::Print(Option_t *o) const { - AliInfo(Form("PID q[%d] [%4.1f %4.1f %4.1f %4.1f %4.1f]", fPIDquality, 1.E2*fPID[0], 1.E2*fPID[1], 1.E2*fPID[2], 1.E2*fPID[3], 1.E2*fPID[4])); + // 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] Ncl[%3d] lab[%3d]", GetNumberOfTracklets(), fN, fLab)); + AliInfo(Form("Ntr[%1d] NtrPID[%1d] Ncl[%3d] lab[%3d]", GetNumberOfTracklets(), GetNumberOfTrackletsPID(), fN, fLab)); - if(strcmp(o, "a")!=0) return; printf("|X| = ("); const Double_t *curP = GetParameter(); for (Int_t i = 0; i < 5; i++) printf("%7.2f ", curP[i]); @@ -651,6 +741,7 @@ void AliTRDtrackV1::Print(Option_t *o) const k=-1; j--; } } + if(strcmp(o, "a")!=0) return; for(Int_t ip=0; ipGetN(); + if(fTracklet[ip] && fTrackletIndex[ip] >= 0) ncls += fTracklet[ip]->GetN(); } AliKalmanTrack::SetNumberOfClusters(ncls); } @@ -696,7 +787,7 @@ 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(); } @@ -704,7 +795,7 @@ void AliTRDtrackV1::SetOwner() } //_______________________________________________________________ -void AliTRDtrackV1::SetTracklet(AliTRDseedV1 *trklt, Int_t index) +void AliTRDtrackV1::SetTracklet(AliTRDseedV1 *const trklt, Int_t index) { // // Set the tracklets @@ -716,69 +807,47 @@ void AliTRDtrackV1::SetTracklet(AliTRDseedV1 *trklt, Int_t index) } //_______________________________________________________________ -void AliTRDtrackV1::SetTrackLow() +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); - fTrackLow = fTrackLow ? new(fTrackLow) AliExternalTrackParam(*op) : new AliExternalTrackParam(*op); + + //printf("SetTrackIn() : fTrackLow[%p]\n", (void*)fTrackLow); + if(fTrackLow){ + fTrackLow->~AliExternalTrackParam(); + new(fTrackLow) AliExternalTrackParam(*op); + } else fTrackLow = new AliExternalTrackParam(*op); } //_______________________________________________________________ -void AliTRDtrackV1::SetTrackHigh(const 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); - fTrackHigh = fTrackHigh ? new(fTrackHigh) AliExternalTrackParam(*op) : new AliExternalTrackParam(*op); + 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; + if(plane<0) return; + 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 = GetX(); - Double_t p[2] = { trklt->GetYat(x) - , trklt->GetZat(x) }; - Double_t cov[3]/*, covR[3], cov0[3]*/; - -// printf("\tD[%3d] Ly[%d] Trk: x[%f] y[%f] z[%f]\n", trklt->GetDetector(), trklt->GetPlane(), GetX(), GetY(), GetZ()); -// // -// Double_t xref = trklt->GetXref(); -// trklt->GetCovAt(xref, covR); -// printf("xr=%5.3f y=%f+-%f z=%f+-%f (covYZ=%f)\n", xref, trklt->GetYat(xref), TMath::Sqrt(covR[0]), trklt->GetZat(xref), TMath::Sqrt(covR[2]), covR[1]); -// -// Double_t x0 = trklt->GetX0(); -// trklt->GetCovAt(x0, cov0); -// printf("x0=%5.3f y=%f+-%f z=%f+-%f (covYZ=%f)\n", x0, trklt->GetYat(x0), TMath::Sqrt(cov0[0]), trklt->GetZat(x0), TMath::Sqrt(cov0[2]), cov0[1]); -// -// trklt->GetCovAt(x, cov); -// printf("x =%5.3f y=%f+-%f z=%f+-%f (covYZ=%f)\n", x, p[0], TMath::Sqrt(cov[0]), p[1], TMath::Sqrt(cov[2]), cov[1]); -// -// const Double_t *cc = GetCovariance(); -// printf("yklm[0] = %f +- %f\n", GetY(), TMath::Sqrt(cc[0])); - - trklt->GetCovAt(x, cov); - if(!AliExternalTrackParam::Update(p, cov)) return kFALSE; -// cc = GetCovariance(); -// printf("yklm[1] = %f +- %f\n", GetY(), TMath::Sqrt(cc[0])); - - 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); - return kTRUE; +// Update chi2/track with one tracklet contribution + SetChi2(GetChi2() + chi2); } //_______________________________________________________________ @@ -788,19 +857,47 @@ void AliTRDtrackV1::UpdateESDtrack(AliESDtrack *track) // Update the TRD PID information in the ESD track // - Int_t nslices = fReconstructor->IsEightSlices() ? (Int_t)AliTRDpidUtil::kNNslices : (Int_t)AliTRDpidUtil::kLQslices; - track->SetNumberOfTRDslices(nslices); - +// Int_t nslices = AliTRDcalibDB::Instance()->GetPIDResponse(fkReconstructor->GetRecoParam()->GetPIDmethod())->GetNumberOfSlices(); + // 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((AliTRDPIDResponse::kNslicesNN+3)*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(nslices); - Float_t *dedx = fTracklet[ip]->GetdEdx(); - for (Int_t js = 0; js < nslices; js++, dedx++) track->SetTRDslice(*dedx, ip, js); + if(fTrackletIndex[ip]<0 || !fTracklet[ip]) continue; + if(!fTracklet[ip]->HasPID()) continue; + fTracklet[ip]->CookdEdx(AliTRDPIDResponse::kNslicesNN); + const Float_t *dedx = fTracklet[ip]->GetdEdx(); + for (Int_t js = 0; js < AliTRDPIDResponse::kNslicesNN; js++, dedx++){ + track->SetTRDslice(*dedx, ip, js+1); + } + p = fTracklet[ip]->GetMomentum(&sp); + spd = sp; track->SetTRDmomentum(p, ip, &spd); + // store global quality per tracklet instead of momentum error + // 26.09.11 A.Bercuci + // first implementation store no. of time bins filled in tracklet (5bits see "y" bits) and + // no. of double clusters in case of pad row cross (4bits see "x" bits) + // bit map for tracklet quality xxxxyyyyy + // 27.10.11 A.Bercuci + // add chamber status bit "z" bit + // bit map for tracklet quality zxxxxyyyyy + // 12.11.11 A.Bercuci + // fit tracklet quality into the field fTRDTimeBin [Char_t] + // bit map for tracklet quality zxxyyyyy + // The information should be retrieved by the following functions of AliESDtrack for each TRD layer + // GetTRDtrkltOccupancy(layer) -> no of TB filled in tracklet + // GetTRDtrkltClCross(layer) -> no of TB filled in crossing pad rows + // IsTRDtrkltChmbGood(layer) -> status of the chamber from which the tracklet is found + Int_t nCross(fTracklet[ip]->IsRowCross()?fTracklet[ip]->GetTBcross():0); if(nCross>3) nCross = 3; + Char_t trackletQ = Char_t(fTracklet[ip]->GetTBoccupancy() | (nCross<<5) | (fTracklet[ip]->IsChmbGood()<<7)); + track->SetTRDTimBin(trackletQ, ip); + track->SetTRDslice(fTracklet[ip]->GetdQdl(), ip, 0); // Set Summed dEdx into the first slice } - - // copy PID to ESD - if(!fPIDquality) return; + // store PID probabilities track->SetTRDpid(fPID); - track->SetTRDpidQuality(fPIDquality); }