#include "AliTRDtrackerV1.h"
#include "AliTRDReconstructor.h"
#include "AliTRDrecoParam.h"
-#include "AliTRDgeometry.h"
#include "Cal/AliTRDCalPID.h"
ClassImp(AliTRDseedV1)
//____________________________________________________________________
-AliTRDseedV1::AliTRDseedV1(Int_t plane)
+AliTRDseedV1::AliTRDseedV1(Int_t det)
:AliTRDseed()
,fReconstructor(0x0)
- ,fPlane(plane)
+ ,fClusterIter(0x0)
+ ,fClusterIdx(0)
+ ,fDet(det)
,fMom(0.)
,fSnp(0.)
,fTgl(0.)
AliTRDseedV1::AliTRDseedV1(const AliTRDseedV1 &ref)
:AliTRDseed((AliTRDseed&)ref)
,fReconstructor(ref.fReconstructor)
- ,fPlane(ref.fPlane)
+ ,fClusterIter(0x0)
+ ,fClusterIdx(0)
+ ,fDet(ref.fDet)
,fMom(ref.fMom)
,fSnp(ref.fSnp)
,fTgl(ref.fTgl)
//AliInfo("");
AliTRDseedV1 &target = (AliTRDseedV1 &)ref;
- target.fPlane = fPlane;
+ target.fClusterIter = 0x0;
+ target.fClusterIdx = 0;
+ target.fDet = fDet;
target.fMom = fMom;
target.fSnp = fSnp;
target.fTgl = fTgl;
nclusters[slice]++;
} // End of loop over clusters
- if(fReconstructor->GetPIDMethod() == AliTRDReconstructor::kLQPID){
+ //if(fReconstructor->GetPIDMethod() == AliTRDReconstructor::kLQPID){
+ if(nslices == AliTRDReconstructor::kLQslices){
// calculate mean charge per slice (only LQ PID)
for(int is=0; is<nslices; is++){
if(nclusters[is]) fdEdx[is] /= nclusters[is];
// Sets the a priori probabilities
for(int ispec=0; ispec<AliPID::kSPECIES; ispec++) {
- fProb[ispec] = pd->GetProbability(ispec, fMom, &fdEdx[0], length, fPlane);
+ fProb[ispec] = pd->GetProbability(ispec, fMom, &fdEdx[0], length, GetPlane());
}
return &fProb[0];
}
AliTRDchamberTimeBin *layer = 0x0;
- if(fReconstructor->GetStreamLevel(AliTRDReconstructor::kTracker)>=7 && c){
- TClonesArray clusters("AliTRDcluster", 24);
- clusters.SetOwner(kTRUE);
- AliTRDcluster *cc = 0x0;
- Int_t det=-1, ncl, ncls = 0;
- for (Int_t iTime = 0; iTime < AliTRDtrackerV1::GetNTimeBins(); iTime++) {
- if(!(layer = chamber->GetTB(iTime))) continue;
- if(!(ncl = Int_t(*layer))) continue;
- for(int ic=0; ic<ncl; ic++){
- cc = (*layer)[ic];
- det = cc->GetDetector();
- new(clusters[ncls++]) AliTRDcluster(*cc);
- }
- }
- AliInfo(Form("N clusters[%d] = %d", fPlane, ncls));
-
- Int_t ref = c ? 1 : 0;
- TTreeSRedirector &cstreamer = *AliTRDtrackerV1::DebugStreamer();
- cstreamer << "AttachClustersIter"
- << "det=" << det
- << "ref=" << ref
- << "clusters.=" << &clusters
+ if(fReconstructor->GetStreamLevel(AliTRDReconstructor::kTracker)>=7){
+ AliTRDtrackingChamber *ch = new AliTRDtrackingChamber(*chamber);
+ (*AliTRDtrackerV1::DebugStreamer()) << "AttachClustersIter"
+ << "chamber.=" << ch
<< "tracklet.=" << this
- << "cl.=" << c
<< "\n";
}
fZ[iTime] = cl->GetZ();
ncl++;
}
- if(fReconstructor->GetStreamLevel(AliTRDReconstructor::kTracker)>=7) AliInfo(Form("iter = %d ncl [%d] = %d", iter, fPlane, ncl));
+ if(fReconstructor->GetStreamLevel(AliTRDReconstructor::kTracker)>=7) AliInfo(Form("iter = %d ncl [%d] = %d", iter, fDet, ncl));
if(ncl>1){
// calculate length of the time bin (calibration aware)
AliTRDseed::Update();
}
- if(fReconstructor->GetStreamLevel(AliTRDReconstructor::kTracker)>=7) AliInfo(Form("iter = %d nclFit [%d] = %d", iter, fPlane, fN2));
+ if(fReconstructor->GetStreamLevel(AliTRDReconstructor::kTracker)>=7) AliInfo(Form("iter = %d nclFit [%d] = %d", iter, fDet, fN2));
if(IsOK()){
tquality = GetQuality(kZcorr);
} // Loop: iter
if (!IsOK()) return kFALSE;
- CookLabels();
+ if(fReconstructor->GetStreamLevel(AliTRDReconstructor::kTracker)>=1) CookLabels();
UpdateUsed();
return kTRUE;
}
}
//____________________________________________________________________
-Bool_t AliTRDseedV1::Fit()
+Bool_t AliTRDseedV1::Fit(Bool_t tilt)
{
//
// Linear fit of the tracklet
//
const Int_t kClmin = 8;
+ const Float_t q0 = 100.;
+ const Float_t clSigma0 = 2.E-2; //[cm]
+ const Float_t clSlopeQ = -1.19E-2; //[1/cm]
+
+ // get track direction
+ Double_t y0 = fYref[0];
+ Double_t dydx = fYref[1];
+ Double_t z0 = fZref[0];
+ Double_t dzdx = fZref[1];
+ Double_t yt, zt;
+
const Int_t kNtb = AliTRDtrackerV1::GetNTimeBins();
AliTRDtrackerV1::AliTRDLeastSquare fitterY, fitterZ;
// convertion factor from square to gauss distribution for sigma
Double_t convert = 1./TMath::Sqrt(12.);
-
+
// book cluster information
- Double_t xc[knTimebins+1], yc[knTimebins], zc[knTimebins+1], sy[knTimebins], sz[knTimebins+1];
+ Double_t xc[knTimebins], yc[knTimebins], zc[knTimebins], sy[knTimebins], sz[knTimebins];
Int_t zRow[knTimebins];
- AliTRDcluster *c = 0x0;
- Int_t nc = 0;
- for (Int_t ic=0; ic<kNtb; ic++) {
+
+
+ fN = 0;
+ AliTRDcluster *c=0x0, **jc = &fClusters[0];
+ for (Int_t ic=0; ic<kNtb; ic++, ++jc) {
zRow[ic] = -1;
xc[ic] = -1.;
yc[ic] = 999.;
zc[ic] = 999.;
sy[ic] = 0.;
sz[ic] = 0.;
- if(!(c = fClusters[ic])) continue;
+ if(!(c = (*jc))) continue;
if(!c->IsInChamber()) continue;
Float_t w = 1.;
if(c->GetNPads()>4) w = .5;
if(c->GetNPads()>5) w = .2;
- zRow[nc] = c->GetPadRow();
- xc[nc] = fX0 - c->GetX();
- yc[nc] = c->GetY();
- zc[nc] = c->GetZ();
- sy[nc] = w; // all clusters have the same sigma
- sz[nc] = fPadLength*convert;
- fitterZ.AddPoint(&xc[nc], zc[nc], sz[nc]);
- nc++;
+ zRow[fN] = c->GetPadRow();
+ xc[fN] = fX0 - c->GetX();
+ yc[fN] = c->GetY();
+ zc[fN] = c->GetZ();
+
+ // extrapolated y value for the track
+ yt = y0 - xc[fN]*dydx;
+ // extrapolated z value for the track
+ zt = z0 - xc[fN]*dzdx;
+ // tilt correction
+ if(tilt) yc[fN] -= fTilt*(zc[fN] - zt);
+
+ // elaborate cluster error
+ Float_t qr = c->GetQ() - q0;
+ sy[fN] = qr < 0. ? clSigma0*TMath::Exp(clSlopeQ*qr) : clSigma0;
+
+ fitterY.AddPoint(&xc[fN], yc[fN]-yt, sy[fN]);
+
+ sz[fN] = fPadLength*convert;
+ fitterZ.AddPoint(&xc[fN], zc[fN], sz[fN]);
+ fN++;
}
// to few clusters
- if (nc < kClmin) return kFALSE;
-
+ if (fN < kClmin) return kFALSE;
+
+ // fit XY plane
+ fitterY.Eval();
+ fYfit[0] = y0+fitterY.GetFunctionParameter(0);
+ fYfit[1] = dydx-fitterY.GetFunctionParameter(1);
- Int_t zN[2*35];
- Int_t nz = AliTRDtrackerV1::Freq(nc, zRow, zN, kFALSE);
+ // check par row crossing
+ Int_t zN[2*AliTRDseed::knTimebins];
+ Int_t nz = AliTRDtrackerV1::Freq(fN, zRow, zN, kFALSE);
// more than one pad row crossing
if(nz>2) return kFALSE;
-
- // estimate reference parameter at average x
- Double_t y0 = fYref[0];
- Double_t dydx = fYref[1];
- Double_t dzdx = fZref[1];
- zc[nc] = fZref[0];
+
// determine z offset of the fit
+ Float_t zslope = 0.;
Int_t nchanges = 0, nCross = 0;
if(nz==2){ // tracklet is crossing pad row
// Find the break time allowing one chage on pad-rows
// with maximal number of accepted clusters
Int_t padRef = zRow[0];
- for (Int_t ic=1; ic<nc; ic++) {
+ for (Int_t ic=1; ic<fN; ic++) {
if(zRow[ic] == padRef) continue;
// debug
// evaluate parameters of the crossing point
Float_t sx = (xc[ic-1] - xc[ic])*convert;
- xc[nc] = .5 * (xc[ic-1] + xc[ic]);
- zc[nc] = .5 * (zc[ic-1] + zc[ic]);
- sz[nc] = TMath::Max(dzdx * sx, .01);
- dzdx = zc[ic-1] > zc[ic] ? 1. : -1.;
- padRef = zRow[ic];
- nCross = ic;
+ fCross[0] = .5 * (xc[ic-1] + xc[ic]);
+ fCross[2] = .5 * (zc[ic-1] + zc[ic]);
+ fCross[3] = TMath::Max(dzdx * sx, .01);
+ zslope = zc[ic-1] > zc[ic] ? 1. : -1.;
+ padRef = zRow[ic];
+ nCross = ic;
nchanges++;
}
}
// condition on nCross and reset nchanges TODO
if(nchanges==1){
- if(dzdx * fZref[1] < 0.){
+ if(dzdx * zslope < 0.){
AliInfo("tracklet direction does not correspond to the track direction. TODO.");
}
SetBit(kRowCross, kTRUE); // mark pad row crossing
- fCross[0] = xc[nc]; fCross[2] = zc[nc]; fCross[3] = sz[nc];
- fitterZ.AddPoint(&xc[nc], zc[nc], sz[nc]);
+ fitterZ.AddPoint(&fCross[0], fCross[2], fCross[3]);
fitterZ.Eval();
- dzdx = fZref[1]; // we don't trust Parameter[1] ??;
- zc[nc] = fitterZ.GetFunctionParameter(0);
+ //zc[nc] = fitterZ.GetFunctionParameter(0);
+ fCross[1] = fYfit[0] - fCross[0] * fYfit[1];
+ fCross[0] = fX0 - fCross[0];
} else if(nchanges > 1){ // debug
- AliInfo("ERROR in n changes!!!");
+ AliError("N pad row crossing > 1.");
return kFALSE;
}
-
- // estimate deviation from reference direction
- dzdx *= fTilt;
- for (Int_t ic=0; ic<nc; ic++) {
- yc[ic] -= y0 + xc[ic]*(dydx + dzdx) + fTilt * (zc[ic] - zc[nc]);
- fitterY.AddPoint(&xc[ic], yc[ic], sy[ic]);
- }
- fitterY.Eval();
- fYfit[0] = y0+fitterY.GetFunctionParameter(0);
- fYfit[1] = dydx+fitterY.GetFunctionParameter(1);
- if(nchanges) fCross[1] = fYfit[0] + fCross[0] * fYfit[1];
-
-// printf("\nnz = %d\n", nz);
-// for(int ic=0; ic<35; ic++) printf("%d row[%d]\n", ic, zRow[ic]);
-//
-// for(int ic=0; ic<nz; ic++) printf("%d n[%d]\n", ic, zN[ic]);
+ UpdateUsed();
return kTRUE;
}
-//___________________________________________________________________
-void AliTRDseedV1::Draw(Option_t*)
-{
-}
//___________________________________________________________________
void AliTRDseedV1::Print(Option_t*) const
// Printing the seedstatus
//
- printf("Seed status :\n");
- printf(" fTilt = %f\n", fTilt);
- printf(" fPadLength = %f\n", fPadLength);
- printf(" fX0 = %f\n", fX0);
- for(int ic=0; ic<AliTRDtrackerV1::GetNTimeBins(); ic++) {
- const Char_t *isUsable = fUsable[ic]?"Yes":"No";
- printf(" %d X[%f] Y[%f] Z[%f] Indexes[%d] clusters[%p] usable[%s]\n"
- , ic
- , fX[ic]
- , fY[ic]
- , fZ[ic]
- , fIndexes[ic]
- , ((void*) fClusters[ic])
- , isUsable);
- }
+ AliInfo(Form("Tracklet X0[%7.2f] Det[%d]", fX0, fDet));
+ printf(" Tilt[%+6.2f] PadLength[%5.2f]\n", fTilt, fPadLength);
+ AliTRDcluster* const* jc = &fClusters[0];
+ for(int ic=0; ic<AliTRDtrackerV1::GetNTimeBins(); ic++, jc++) {
+ if(!(*jc)) continue;
+ printf(" %2d X[%7.2f] Y[%7.2f] Z[%7.2f] Idx[%d] c[%p] usable[%s]\n",
+ ic, (*jc)->GetX(), (*jc)->GetY(), (*jc)->GetZ(),
+ fIndexes[ic], (void*)(*jc), fUsable[ic]?"y":"n");
+ }
printf(" fYref[0] =%f fYref[1] =%f\n", fYref[0], fYref[1]);
printf(" fZref[0] =%f fZref[1] =%f\n", fZref[0], fZref[1]);
printf(" fYfit[0] =%f fYfit[1] =%f\n", fYfit[0], fYfit[1]);
- printf(" fYfitR[0]=%f fYfitR[1]=%f\n", fYfitR[0], fYfitR[1]);
printf(" fZfit[0] =%f fZfit[1] =%f\n", fZfit[0], fZfit[1]);
- printf(" fZfitR[0]=%f fZfitR[1]=%f\n", fZfitR[0], fZfitR[1]);
printf(" fSigmaY =%f\n", fSigmaY);
printf(" fSigmaY2=%f\n", fSigmaY2);
printf(" fMeanz =%f\n", fMeanz);
printf(" fZProb =%f\n", fZProb);
printf(" fLabels[0]=%d fLabels[1]=%d\n", fLabels[0], fLabels[1]);
printf(" fN =%d\n", fN);
- printf(" fN2 =%d (>8 isOK)\n",fN2);
+ printf(" fN2 =%d (>4 isOK - to be redesigned)\n",fN2);
printf(" fNUsed =%d\n", fNUsed);
printf(" fFreq =%d\n", fFreq);
printf(" fNChange=%d\n", fNChange);
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff