////////////////////////////////////////////////////////////////////////////
// //
-// The TRD track seed //
+// \class AliTRDseedV1
+// \brief The TRD offline tracklet
+// \author Alexandru Bercuci
// //
////////////////////////////////////////////////////////////////////////////
-#ifndef ALITRDSEED_H
-#include "AliTRDseed.h"
+#ifndef ALITRDTRACKLETBASE_H
+#include "AliTRDtrackletBase.h"
+#endif
+
+#ifndef ROOT_TMath
+#include "TMath.h"
#endif
#ifndef ALITRDGEOMETRY_H
#include "AliPID.h"
#endif
-#ifndef ALIRIEMAN_H
-#include "AliRieman.h"
+
+#ifndef ALITRDCLUSTER_H
+#include "AliTRDcluster.h"
#endif
+
class TTreeSRedirector;
+class TLinearFitter;
class AliRieman;
+class AliTRDReconstructor;
class AliTRDtrackingChamber;
-class AliTRDcluster;
class AliTRDtrackV1;
-class AliTRDReconstructor;
-class AliTRDseedV1 : public AliTRDseed
+class AliTRDpadPlane;
+class AliTRDseedV1 : public AliTRDtrackletBase
{
-
- public:
-
- enum {
- knSlices = 10
+ friend class AliHLTTRDTracklet; // wrapper for HLT
+
+public:
+ enum ETRDtrackletBuffers {
+ kNbits = 6 // bits to store number of clusters
+ ,kMask = 0x3f // bit mask
+ ,kNtb = 31 // max clusters/pad row
+ ,kNclusters = 2*kNtb // max number of clusters/tracklet
+ ,kNdEdxSlices= 8 // dEdx slices allocated in reconstruction
};
+
// bits from 0-13 are reserved by ROOT (see TObject.h)
- enum AliTRDtrackletStatus {
- kOwner = BIT(14)
- , kRowCross = BIT(15)
+ enum ETRDtrackletStatus {
+ kOwner = BIT(14) // owner of its clusters
+ ,kRowCross = BIT(15) // pad row cross tracklet
+ ,kChmbGood = BIT(16) // status of the detector from calibration view point
+ ,kCalib = BIT(17) // calibrated tracklet
+ ,kKink = BIT(18) // kink prolongation tracklet
+ ,kStandAlone = BIT(19) // tracklet build during stand alone track finding
+ ,kPrimary = BIT(20) // tracklet from a primary track candidate
+ };
+
+ enum ETRDtrackletError { // up to 8 bits
+ kAttachClFound = 0 // not enough clusters found
+ ,kAttachRowGap = 1 // found gap attached rows
+ ,kAttachRow = 2 // found 3 rows
+ ,kAttachMultipleCl= 3// multiple clusters attached to time bin
+ ,kAttachClAttach= 4 // not enough clusters attached
+ ,kFitCl = 5 // not enough clusters for fit
+ ,kFitFailedY = 6 // fit failed in XY plane failed
+ ,kFitFailedZ = 7 // fit in the QZ plane failed
};
AliTRDseedV1(Int_t det = -1);
AliTRDseedV1(const AliTRDseedV1 &ref);
AliTRDseedV1& operator=(const AliTRDseedV1 &ref);
- Bool_t AttachClustersIter(
- AliTRDtrackingChamber *chamber, Float_t quality,
- Bool_t kZcorr = kFALSE, AliTRDcluster *c=0x0);
- Bool_t AttachClusters(
- AliTRDtrackingChamber *chamber, Bool_t kZcorr = kFALSE);
+ Bool_t AttachClusters(AliTRDtrackingChamber *const chamber, Bool_t tilt = kFALSE, Bool_t ChgPlus=kTRUE, Int_t ev=-1);
void Bootstrap(const AliTRDReconstructor *rec);
+ void Calibrate();
void CookdEdx(Int_t nslices);
- Bool_t Fit(Bool_t tilt=kTRUE, Int_t errors = 2);
-
- Bool_t Init(AliTRDtrackV1 *track);
- inline void Init(const AliRieman *fit);
+ void CookLabels();
+ Bool_t CookPID();
+ Bool_t Fit(UChar_t opt=0);
+ Bool_t FitRobust(Bool_t ChgPlus=kTRUE);
+ Bool_t Init(const AliTRDtrackV1 *track);
+ void Init(const AliRieman *fit);
Bool_t IsEqual(const TObject *inTracklet) const;
+ Bool_t IsCalibrated() const { return TestBit(kCalib);}
+ Bool_t IsChmbGood() const { return TestBit(kChmbGood);}
Bool_t IsOwner() const { return TestBit(kOwner);}
+ Bool_t IsKink() const { return TestBit(kKink);}
+ Bool_t IsPrimary() const { return TestBit(kPrimary);}
+ Bool_t HasError(ETRDtrackletError err) const
+ { return TESTBIT(fErrorMsg, err);}
+ Bool_t IsOK() const { return GetN() > 4 && GetNUsed() < 4;}
Bool_t IsRowCross() const { return TestBit(kRowCross);}
-
- inline Float_t GetChi2Z(const Float_t z = 999.) const;
- inline Float_t GetChi2Y(const Float_t y = 999.) const;
- static void GetClusterXY(const AliTRDcluster *c, Double_t &x, Double_t &y);
+ Bool_t IsUsable(Int_t i) const { return fClusters[i] && !fClusters[i]->IsUsed();}
+ Bool_t IsStandAlone() const { return TestBit(kStandAlone);}
+
+ Float_t GetAnodeWireOffset(Float_t zt);
+ Float_t GetC(Int_t typ=0) const { return fC[typ]; }
+ Float_t GetCharge(Bool_t useOutliers=kFALSE) const;
+ Float_t GetChi2() const { return fChi2; }
+ inline Float_t GetChi2Z() const;
+ inline Float_t GetChi2Y() const;
+ inline Float_t GetChi2Phi() const;
void GetCovAt(Double_t x, Double_t *cov) const;
void GetCovXY(Double_t *cov) const { memcpy(cov, &fCov[0], 3*sizeof(Double_t));}
- void GetCovRef(Double_t *cov) const { memcpy(cov, &fRefCov[0], 3*sizeof(Double_t));}
- Double_t* GetCrossXYZ() { return &fCross[0];}
- Double_t GetCrossSz2() const { return fCross[3];}
+ void GetCovRef(Double_t *cov) const { memcpy(cov, &fRefCov, 7*sizeof(Double_t));}
+ static Int_t GetCovSqrt(const Double_t * const c, Double_t *d);
+ static Double_t GetCovInv(const Double_t * const c, Double_t *d);
+ UChar_t GetErrorMsg() const { return fErrorMsg;}
Float_t GetdX() const { return fdX;}
- Float_t* GetdEdx() { return &fdEdx[0];}
- Float_t GetdQdl(Int_t ic) const;
+ const Float_t* GetdEdx() const { return &fdEdx[0];}
+ Float_t GetQperTB(Int_t tb) const;
+ Float_t GetdQdl() const;
+ Float_t GetdQdl(Int_t ic, Float_t *dx=NULL) const;
+ Float_t GetdYdX() const { return fYfit[1];}
+ Float_t GetdZdX() const { return fZfit[1];}
+ Int_t GetdY() const { return Int_t(GetY()/0.014);}
Int_t GetDetector() const { return fDet;}
- Float_t GetExB() const { return fExB;}
- Double_t GetMomentum() const { return fMom;}
- Int_t GetN() const { return fN2;}
+ Int_t GetChargeGaps(Float_t sz[kNtb], Float_t pos[kNtb], Int_t ntb[kNtb]) const;
+ void GetCalibParam(Float_t &exb, Float_t &vd, Float_t &t0, Float_t &s2, Float_t &dl, Float_t &dt) const {
+ exb = fExB; vd = fVD; t0 = fT0; s2 = fS2PRF; dl = fDiffL; dt = fDiffT;}
+ AliTRDcluster* GetClusters(Int_t i) const { return i<0 || i>=kNclusters ? NULL: fClusters[i];}
+ Bool_t GetEstimatedCrossPoint(Float_t &x, Float_t &z) const;
+ Int_t GetIndexes(Int_t i) const{ return i<0 || i>=kNclusters ? -1 : fIndexes[i];}
+ Int_t GetLabels(Int_t i) const { return fLabels[i];}
+ Float_t GetMomentum(Float_t *err = NULL) const;
+ Int_t GetN() const { return (Int_t)fN&kMask;}
+ Int_t GetN2() const { return GetN();}
+ Int_t GetNUsed() const { return Int_t((fN>>kNbits)&kMask);}
+ Int_t GetNShared() const { return Int_t(((fN>>kNbits)>>kNbits)&kMask);}
+ Int_t GetTBoccupancy() const;
+ Int_t GetTBcross() const;
Float_t GetQuality(Bool_t kZcorr) const;
+ Float_t GetPadLength() const { return fPad[0];}
+ Float_t GetPadWidth() const { return fPad[1];}
Int_t GetPlane() const { return AliTRDgeometry::GetLayer(fDet); }
- Double_t* GetProbability();
- Double_t GetSnp() const { return fSnp;}
- Double_t GetTgl() const { return fTgl;}
- Float_t GetXref() const { return fXref;}
- Double_t GetYat(Double_t x) const { return fYfit[0] + fYfit[1] * (fX0-x);}
- Double_t GetZat(Double_t x) const { return fZfit[0] + fZfit[1] * (fX0-x);}
-
+ Float_t* GetProbability(Bool_t force=kFALSE);
+ Float_t GetPt() const { return fPt; }
+ inline Double_t GetPID(Int_t is=-1) const;
+ Float_t GetS2Y() const { return fS2Y;}
+ Float_t GetS2Z() const { return fS2Z;}
+ Float_t GetSigmaY() const { return fS2Y > 0. ? TMath::Sqrt(fS2Y) : 0.2;}
+ Float_t GetSnp() const { return fYref[1]/TMath::Sqrt(1+fYref[1]*fYref[1]);}
+ Float_t GetTgl() const { return fZref[1]/TMath::Sqrt(1+fYref[1]*fYref[1]);}
+ Float_t GetTilt() const { return fPad[2];}
+ UInt_t GetTrackletWord() const { return 0;}
+ UShort_t GetVolumeId() const;
+ Float_t GetX0() const { return fX0;}
+ Float_t GetX() const { return fX0 - fX;}
+ Float_t GetY() const { return fYfit[0] - fYfit[1] * fX;}
+ Double_t GetYat(Double_t x) const { return fYfit[0] - fYfit[1] * (fX0-x);}
+ Float_t GetYfit(Int_t id) const { return fYfit[id];}
+ Float_t GetYref(Int_t id) const { return fYref[id];}
+ Float_t GetZ() const { return fZfit[0] - fZfit[1] * fX;}
+ Double_t GetZat(Double_t x) const { return fZfit[0] - fZfit[1] * (fX0-x);}
+ Float_t GetZfit(Int_t id) const { return fZfit[id];}
+ Float_t GetZref(Int_t id) const { return fZref[id];}
+ Int_t GetYbin() const { return Int_t(GetY()/0.016);}
+ Int_t GetZbin() const { return Int_t(GetZ()/fPad[0]);}
+
inline AliTRDcluster* NextCluster();
inline AliTRDcluster* PrevCluster();
void Print(Option_t *o = "") const;
inline void ResetClusterIter(Bool_t forward = kTRUE);
-
- void SetCovRef(const Double_t *cov) { memcpy(&fRefCov[0], cov, 3*sizeof(Double_t));}
- void SetMomentum(Double_t mom){ fMom = mom;}
+ void Reset(Option_t *opt="");
+
+ void SetC(Float_t c, Int_t typ=0) { fC[typ] = c;}
+ void SetChmbGood(Bool_t k = kTRUE){ SetBit(kChmbGood, k);}
+ void SetChi2(Float_t chi2) { fChi2 = chi2;}
+ inline void SetCovRef(const Double_t *cov);
+ void SetErrorMsg(ETRDtrackletError err) { SETBIT(fErrorMsg, err);}
+ void SetIndexes(Int_t i, Int_t idx) { fIndexes[i] = idx; }
+ void SetLabels(Int_t *lbls) { memcpy(fLabels, lbls, 3*sizeof(Int_t)); }
+ void SetKink(Bool_t k = kTRUE){ SetBit(kKink, k);}
+ void SetPrimary(Bool_t k = kTRUE){ SetBit(kPrimary, k);}
+ void SetStandAlone(Bool_t st) { SetBit(kStandAlone, st); }
+ void SetPt(Double_t pt) { fPt = pt;}
void SetOwner();
+ void SetPadPlane(AliTRDpadPlane * const p);
+ void SetPadLength(Float_t l) { fPad[0] = l;}
+ void SetPadWidth(Float_t w) { fPad[1] = w;}
+ void SetTilt(Float_t tilt) { fPad[2] = tilt; }
void SetDetector(Int_t d) { fDet = d; }
void SetDX(Float_t inDX) { fdX = inDX;}
- void SetSnp(Double_t snp) { fSnp = snp;}
- void SetTgl(Double_t tgl) { fTgl = tgl;}
- void SetReconstructor(const AliTRDReconstructor *rec) {fReconstructor = rec;}
+ void SetReconstructor(const AliTRDReconstructor *rec) {fkReconstructor = rec;}
+ void SetX0(Float_t x0) { fX0 = x0; }
+ void SetYref(Int_t i, Float_t y) { fYref[i] = y;}
+ void SetZref(Int_t i, Float_t z) { fZref[i] = z;}
+// void SetUsabilityMap(Long_t um) { fUsable = um; }
+ void Update(const AliTRDtrackV1* trk);
+ void UpdateUsed();
+ void UseClusters();
protected:
- void Copy(TObject &ref) const;
- void SetExB();
+ void Copy(TObject &ref) const;
private:
- const AliTRDReconstructor *fReconstructor;//! local reconstructor
- AliTRDcluster **fClusterIter; //! clusters iterator
+ inline void SetN(Int_t n);
+ inline void SetNUsed(Int_t n);
+ inline void SetNShared(Int_t n);
+ inline void Swap(Int_t &n1, Int_t &n2) const;
+ inline void Swap(Double_t &d1, Double_t &d2) const;
+
+ const AliTRDReconstructor *fkReconstructor;//! local reconstructor
+ AliTRDcluster **fClusterIter; //! clusters iterator
+ Int_t fIndexes[kNclusters]; //! Indexes
+ Float_t fExB; // tg(a_L) @ tracklet location
+ Float_t fVD; // drift velocity @ tracklet location
+ Float_t fT0; // time 0 @ tracklet location
+ Float_t fS2PRF; // sigma^2 PRF for xd->0 and phi=a_L
+ Float_t fDiffL; // longitudinal diffusion coefficient
+ Float_t fDiffT; // transversal diffusion coefficient
Char_t fClusterIdx; //! clusters iterator
- Int_t fDet; // TRD detector
- Float_t fMom; // Momentum estimate for tracklet [GeV/c]
- Float_t fSnp; // sin of track with respect to x direction in XY plane
- Float_t fTgl; // tg of track with respect to x direction in XZ plane
+ UChar_t fErrorMsg; // processing error
+ UInt_t fN; // number of clusters attached/used/shared
+ Short_t fDet; // TRD detector
+ AliTRDcluster *fClusters[kNclusters]; // Clusters
+ Float_t fPad[4]; // local pad definition : length/width/tilt/anode wire offset
+ Float_t fYref[2]; // Reference y, dydx
+ Float_t fZref[2]; // Reference z, dz/dx
+ Float_t fYfit[2]; // Fit y, dy/dx
+ Float_t fZfit[2]; // Fit z
+ Float_t fPt; // Pt estimate @ tracklet [GeV/c]
Float_t fdX; // length of time bin
- Float_t fXref; // average radial position of clusters
- Float_t fExB; // tg(a_L) for the tracklet reagion
- Float_t fdEdx[knSlices]; // dE/dx measurements for tracklet
- Double_t fCross[4]; // spatial parameters of the pad row crossing
- Double_t fRefCov[3]; // covariance matrix of the track in the yz plane
+ Float_t fX0; // anode wire position
+ Float_t fX; // radial position of the tracklet
+ Float_t fY; // r-phi position of the tracklet
+ Float_t fZ; // z position of the tracklet
+ Float_t fS2Y; // estimated resolution in the r-phi direction
+ Float_t fS2Z; // estimated resolution in the z direction
+ Float_t fC[2]; // Curvature for standalone [0] rieman [1] vertex constrained
+ Float_t fChi2; // Global chi2
+ Float_t fdEdx[kNdEdxSlices]; // dE/dx measurements for tracklet
+ Float_t fProb[AliPID::kSPECIES]; // PID probabilities
+ Int_t fLabels[3]; // most frequent MC labels and total number of different labels
+ Double_t fRefCov[7]; // covariance matrix of the track in the yz plane + the rest of the diagonal elements
Double_t fCov[3]; // covariance matrix of the tracklet in the xy plane
- Double_t fProb[AliPID::kSPECIES]; // PID probabilities
-
- ClassDef(AliTRDseedV1, 4) // New TRD seed
+ ClassDef(AliTRDseedV1, 12) // The offline TRD tracklet
};
//____________________________________________________________
-inline Float_t AliTRDseedV1::GetChi2Z(const Float_t z) const
+inline Float_t AliTRDseedV1::GetChi2Z() const
+{
+ Double_t dz = fZref[0]-fZfit[0]; dz*=dz;
+ Double_t cov[3]; GetCovAt(fX, cov);
+ Double_t s2 = fRefCov[2]+cov[2];
+ return s2 > 0. ? dz/s2 : 0.;
+}
+
+//____________________________________________________________
+inline Float_t AliTRDseedV1::GetChi2Y() const
{
- Float_t z1 = (z == 999.) ? fMeanz : z;
- Float_t chi = fZref[0] - z1;
- return chi*chi;
+ Double_t dy = fYref[0]-fYfit[0]; dy*=dy;
+ Double_t cov[3]; GetCovAt(fX, cov);
+ Double_t s2 = fRefCov[0]+cov[0];
+ return s2 > 0. ? dy/s2 : 0.;
}
//____________________________________________________________
-inline Float_t AliTRDseedV1::GetChi2Y(const Float_t y) const
+inline Float_t AliTRDseedV1::GetChi2Phi() const
{
- Float_t y1 = (y == 999.) ? fYfitR[0] : y;
- Float_t chi = fYref[0] - y1;
- return chi*chi;
+ Double_t dphi = fYref[1]-fYfit[1]; dphi*=dphi;
+ Double_t cov[3]; GetCovAt(fX, cov);
+ Double_t s2 = fRefCov[2]+cov[2];
+ return s2 > 0. ? dphi/s2 : 0.;
}
+
+
//____________________________________________________________
-inline void AliTRDseedV1::Init(const AliRieman *rieman)
+inline Double_t AliTRDseedV1::GetPID(Int_t is) const
{
- fZref[0] = rieman->GetZat(fX0);
- fZref[1] = rieman->GetDZat(fX0);
- fYref[0] = rieman->GetYat(fX0);
- fYref[1] = rieman->GetDYat(fX0);
- fC = rieman->GetC();
- fChi2 = rieman->GetChi2();
+ if(is<0) return fProb[AliPID::kElectron];
+ if(is<AliPID::kSPECIES) return fProb[is];
+ return 0.;
}
//____________________________________________________________
// Forward iterator
fClusterIdx++; fClusterIter++;
- while(fClusterIdx < AliTRDseed::knTimebins){
+ while(fClusterIdx < kNclusters){
if(!(*fClusterIter)){
fClusterIdx++;
fClusterIter++;
}
return *fClusterIter;
}
- return 0x0;
+ return NULL;
}
//____________________________________________________________
}
return *fClusterIter;
}
- return 0x0;
+ return NULL;
}
//____________________________________________________________
fClusterIter = &fClusters[0]; fClusterIter--;
fClusterIdx=-1;
} else {
- fClusterIter = &fClusters[AliTRDseed::knTimebins-1]; fClusterIter++;
- fClusterIdx=AliTRDseed::knTimebins;
+ fClusterIter = &fClusters[kNclusters-1]; fClusterIter++;
+ fClusterIdx=kNclusters;
}
}
+//____________________________________________________________
+inline void AliTRDseedV1::SetCovRef(const Double_t *cov)
+{
+// Copy some "important" covariance matrix elements
+// var(y)
+// cov(y,z) var(z)
+// var(snp)
+// var(tgl)
+// cov(tgl, 1/pt) var(1/pt)
+
+ memcpy(&fRefCov[0], cov, 3*sizeof(Double_t)); // yz full covariance
+ fRefCov[3] = cov[ 5]; // snp variance
+ fRefCov[4] = cov[ 9]; // tgl variance
+ fRefCov[5] = cov[13]; // cov(tgl, 1/pt)
+ fRefCov[6] = cov[14]; // 1/pt variance
+}
+
+
+//____________________________________________________________
+inline void AliTRDseedV1::SetN(Int_t n)
+{
+ if(n<0 || n>kNclusters) return;
+ fN &= ~kMask;
+ fN |= (n&kMask);
+}
+
+//____________________________________________________________
+inline void AliTRDseedV1::SetNUsed(Int_t n)
+{
+ if(n<0 || n>kNclusters) return;
+ UInt_t mask(kMask<<kNbits);
+ fN &= ~mask;
+ n=n<<kNbits; fN |= (n&mask);
+}
+
+//____________________________________________________________
+inline void AliTRDseedV1::SetNShared(Int_t n)
+{
+ if(n<0 || n>kNclusters) return;
+ UInt_t mask((kMask<<kNbits)<<kNbits);
+ fN &= ~mask;
+ n = (n<<kNbits)<<kNbits; fN|=(n&mask);
+}
+
+//____________________________________________________________
+inline void AliTRDseedV1::Swap(Int_t &n1, Int_t &n2) const
+{
+// swap values of n1 with n2
+ Int_t tmp(n1);
+ n1=n2; n2=tmp;
+}
+
+//____________________________________________________________
+inline void AliTRDseedV1::Swap(Double_t &d1, Double_t &d2) const
+{
+// swap values of d1 with d2
+ Double_t tmp(d1);
+ d1=d2; d2=tmp;
+}
+
+
#endif
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff