* provided "as is" without express or implied warranty. *
**************************************************************************/
-/* $Id$ */
+/* $Id: AliTRDseedV1.cxx 60233 2013-01-10 09:04:08Z abercuci $ */
////////////////////////////////////////////////////////////////////////////
////
////////////////////////////////////////////////////////////////////////////
#include "TMath.h"
-#include <TTreeStream.h>
+#include "TGeoManager.h"
+#include "TTreeStream.h"
+#include "TGraphErrors.h"
#include "AliLog.h"
#include "AliMathBase.h"
#include "AliTRDReconstructor.h"
#include "AliTRDpadPlane.h"
+#include "AliTRDtransform.h"
#include "AliTRDcluster.h"
#include "AliTRDseedV1.h"
#include "AliTRDtrackV1.h"
#include "AliTRDtrackerV1.h"
#include "AliTRDrecoParam.h"
#include "AliTRDCommonParam.h"
+#include "AliTRDtrackletOflHelper.h"
+#include "Cal/AliTRDCalTrkAttach.h"
#include "Cal/AliTRDCalPID.h"
#include "Cal/AliTRDCalROC.h"
#include "Cal/AliTRDCalDet.h"
fZref[0] = 0.; fZref[1] = 0.;
fYfit[0] = 0.; fYfit[1] = 0.;
fZfit[0] = 0.; fZfit[1] = 0.;
- memset(fdEdx, 0, kNslices*sizeof(Float_t));
+ memset(fdEdx, 0, kNdEdxSlices*sizeof(Float_t));
for(int ispec=0; ispec<AliPID::kSPECIES; ispec++) fProb[ispec] = -1.;
fLabels[0]=-1; fLabels[1]=-1; // most freq MC labels
fLabels[2]=0; // number of different labels for tracklet
target.fZref[0] = fZref[0]; target.fZref[1] = fZref[1];
target.fYfit[0] = fYfit[0]; target.fYfit[1] = fYfit[1];
target.fZfit[0] = fZfit[0]; target.fZfit[1] = fZfit[1];
- memcpy(target.fdEdx, fdEdx, kNslices*sizeof(Float_t));
+ memcpy(target.fdEdx, fdEdx, kNdEdxSlices*sizeof(Float_t));
memcpy(target.fProb, fProb, AliPID::kSPECIES*sizeof(Float_t));
memcpy(target.fLabels, fLabels, 3*sizeof(Int_t));
memcpy(target.fRefCov, fRefCov, 7*sizeof(Double_t));
//____________________________________________________________
-Bool_t AliTRDseedV1::Init(AliTRDtrackV1 *track)
+Bool_t AliTRDseedV1::Init(const AliTRDtrackV1 *track)
{
// Initialize this tracklet using the track information
//
fZref[0] = 0.; fZref[1] = 0.;
fYfit[0] = 0.; fYfit[1] = 0.;
fZfit[0] = 0.; fZfit[1] = 0.;
- memset(fdEdx, 0, kNslices*sizeof(Float_t));
+ memset(fdEdx, 0, kNdEdxSlices*sizeof(Float_t));
for(int ispec=0; ispec<AliPID::kSPECIES; ispec++) fProb[ispec] = -1.;
fLabels[0]=-1; fLabels[1]=-1; // most freq MC labels
fLabels[2]=0; // number of different labels for tracklet
// 3. cluster size
//
- memset(fdEdx, 0, kNslices*sizeof(Float_t));
+ memset(fdEdx, 0, kNdEdxSlices*sizeof(Float_t));
const Double_t kDriftLength = (.5 * AliTRDgeometry::AmThick() + AliTRDgeometry::DrThick());
AliTRDcluster *c(NULL);
//____________________________________________________________________
-Float_t AliTRDseedV1::GetCharge(Bool_t useOutliers)
+Float_t AliTRDseedV1::GetCharge(Bool_t useOutliers) const
{
// Computes total charge attached to tracklet. If "useOutliers" is set clusters
// which are not in chamber are also used (default false)
AliTRDcluster *c(NULL); Float_t qt(0.);
for(int ic=0; ic<kNclusters; ic++){
if(!(c=fClusters[ic])) continue;
- if(c->IsInChamber() && !useOutliers) continue;
+ if(!c->IsInChamber() && !useOutliers) continue;
qt += TMath::Abs(c->GetQ());
}
return qt;
}
+//____________________________________________________________________
+Int_t AliTRDseedV1::GetChargeGaps(Float_t sz[kNtb], Float_t pos[kNtb], Int_t isz[kNtb]) const
+{
+// Find number, size and position of charge gaps (consecutive missing time bins).
+// Returns the number of gaps and fills their size in input array "sz" and position in array "pos"
+
+ Bool_t gap(kFALSE);
+ Int_t n(0);
+ Int_t ipos[kNtb]; memset(isz, 0, kNtb*sizeof(Int_t));memset(ipos, 0, kNtb*sizeof(Int_t));
+ for(int ic(0); ic<kNtb; ic++){
+ if(fClusters[ic] || fClusters[ic+kNtb]){
+ if(gap) n++;
+ continue;
+ }
+ gap = kTRUE;
+ isz[n]++;
+ ipos[n] = ic;
+ }
+ if(!n) return 0;
+
+ // write calibrated values
+ AliTRDcluster fake;
+ for(Int_t igap(0); igap<n; igap++){
+ sz[igap] = isz[igap]*fVD/AliTRDCommonParam::Instance()->GetSamplingFrequency();
+ fake.SetPadTime(ipos[igap]);
+ pos[igap] = fake.GetXloc(fT0, fVD);
+ if(isz[igap]>1){
+ fake.SetPadTime(ipos[igap]-isz[igap]+1);
+ pos[igap] += fake.GetXloc(fT0, fVD);
+ pos[igap] /= 2.;
+ }
+ }
+ return n;
+}
+
+
+//____________________________________________________________________
+Double_t AliTRDseedV1::EstimatedCrossPoint(AliTRDpadPlane *pp)
+{
+// Algorithm to estimate cross point in the x-z plane for pad row cross tracklets or the z coordinate of pad row without pad row cross in the local chamber coordinates.
+// Returns variance of the radial offset from anode wire in case of raw cross or 0 otherwise.
+
+ Int_t row[] = {-1, -1};
+ Double_t zoff(0.5 * (pp->GetRow0() + pp->GetRowEnd())), sx(0.), mean(0.5*pp->GetNrows()-0.5);
+ AliTRDcluster *c(NULL);
+ fS2Y = 0.;
+
+ if(!IsRowCross()){
+ for(int ic=0; ic<kNtb; ic++){
+ if(!(c=fClusters[ic])) continue;
+ if(!c->IsInChamber()) continue;
+ row[0] = c->GetPadRow();
+ fZfit[0] = Int_t(mean-row[0])*pp->GetLengthIPad() +
+ 0.5*(mean-row[0]>0.?1.:-1.)*(row[0]>0&&row[0]<pp->GetNrows()-1?pp->GetLengthIPad():pp->GetLengthOPad());
+ break;
+ }
+ } else {
+ Float_t tbm[2] = {0.}; // mean value of time bin in rows
+ Int_t tb[kNtb]={0}, //array of time bins from first row
+ nc[2] = {0}, // no. of clusters in rows
+ mc(0); // no. of common clusters
+ Bool_t w[2] = {kFALSE, kFALSE}; // acceptance flag for rows
+ // Find radial range for first row
+ for(int ic(0); ic<kNtb; ic++){
+ tb[ic]= -1;
+ if(!(c=fClusters[ic]) || !c->IsInChamber()) continue;
+ if(row[0]<0) row[0] = c->GetPadRow();
+ tb[nc[0]++] = ic; tbm[0] += ic;
+ }
+ if(nc[0]>2){
+ tbm[0] /= nc[0];
+ w[0] = kTRUE;
+ }
+ // Find radial range for second row
+ for(int ic(kNtb), jc(0); ic<kNclusters; ic++, jc++){
+ if(!(c=fClusters[ic]) || !c->IsInChamber()) continue;
+ if(row[1]<0) row[1] = c->GetPadRow();
+ tbm[1] += jc; nc[1]++;
+ for(Int_t kc(0); kc<nc[0]; kc++)
+ if(tb[kc]==jc){
+ tb[kc] += 100; // mark common cluster
+ mc++;
+ break;
+ }
+ }
+ if(nc[1]>2){
+ tbm[1] /= nc[1];
+ w[1] = kTRUE;
+ }
+ //printf("0 : %f[%2d] 1 : %f[%2d] mc[%d]\n", tbm[0], nc[0], tbm[1], nc[1], mc);
+ if(!w[0] && !w[1]){
+ AliError("Too few clusters to estimate tracklet.");
+ return -1;
+ }
+ if(!w[0] || !w[1]){
+ SetBit(kRowCross, kFALSE); // reset RC bit
+ if(w[1]) row[0] = row[1];
+ fZfit[0] = Int_t(mean-row[0])*pp->GetLengthIPad() +
+ 0.5*(mean-row[0]>0.?1.:-1.)*(row[0]>0&&row[0]<pp->GetNrows()-1?pp->GetLengthIPad():pp->GetLengthOPad());
+ }else{ // find the best matching timebin
+ fZfit[0] = Int_t(mean-0.5*(row[0]+row[1]))*pp->GetLengthIPad();
+ Int_t itb(0), dtb(0);
+ if(!mc) { // no common range
+ itb = Int_t(0.5*(tbm[0] + tbm[1]));
+ dtb = Int_t(0.5*TMath::Abs(tbm[0] - tbm[1])); // simple parameterization of the cluster gap
+ } else {
+ Double_t rmax(100.); Int_t itbStart(-1), itbStop(0);
+ // compute distance from
+ for(Int_t jc(0); jc<nc[0]; jc++){
+ if(tb[jc] < 100) continue;
+ Int_t ltb(tb[jc]-100);
+ Double_t r = (1. - ltb/tbm[0])*(1. - ltb/tbm[1]);
+ //printf("tb[%2d] dr[%f %f %f] rmax[%f]\n", ltb, r, 1. - ltb/tbm[0], 1. - ltb/tbm[1], rmax);
+ if(TMath::Abs(r)<rmax){ rmax = TMath::Abs(r); itb = ltb; }
+ if(itbStart<0) itbStart = ltb;
+ itbStop = ltb;
+ }
+ dtb = itbStop-itbStart+1;
+ }
+ AliTRDCommonParam *cp = AliTRDCommonParam::Instance();
+ Double_t freq(cp?cp->GetSamplingFrequency():10.);
+ fS2Y = ((itb-0.5)/freq - fT0 - 0.189)*fVD; // xOff
+ sx = dtb*0.288675134594812921/freq; sx *= sx; sx += 1.56e-2; sx *= fVD*fVD;
+ }
+ }
+
+ // estimate dzdx
+ Float_t dx(fX0-fS2Y);
+ fZfit[1] = (fZfit[0]+zoff)/dx;
+
+ // correct dzdx for the bias
+ UnbiasDZDX(IsRowCross());
+ if(IsRowCross()){
+ // correct x_cross/sigma(x_cross) for the bias in dzdx
+ const AliTRDrecoParam* const recoParam = fkReconstructor->GetRecoParam();
+ if(recoParam){
+ fS2Y += recoParam->GetCorrDZDXxcross()*TMath::Abs(fZfit[1]);
+ sx += recoParam->GetCorrDZDXxcross()*recoParam->GetCorrDZDXxcross()*GetS2DZDX(fZfit[1]);
+ }
+ // correct sigma(x_cross) for the width of the crossing area
+ sx += GetS2XcrossDZDX(TMath::Abs(fZfit[1]));
+
+ // estimate z and error @ anode wire
+ fZfit[0] += fZfit[1]*fS2Y;
+ fS2Z = fZfit[1]*fZfit[1]*sx+fS2Y*fS2Y*GetS2DZDX(fZfit[1]);
+ }
+ return sx;
+}
+
+//____________________________________________________________________
+void AliTRDseedV1::UnbiasDZDX(Bool_t rc)
+{
+ // correct dzdx for the bias in z according to MC
+ const AliTRDrecoParam* const recoParam = fkReconstructor->GetRecoParam();
+ if(!recoParam) return;
+ fZfit[1] *= recoParam->GetCorrDZDX(rc);
+ if(rc) fZfit[1] += recoParam->GetCorrDZDXbiasRC(fZfit[1]<0);
+}
+
+//____________________________________________________________________
+Double_t AliTRDseedV1::UnbiasY(Bool_t rc, Bool_t sgn, Int_t chg)
+{
+// correct y coordinate for tail cancellation. This should be fixed by considering TC as a function of q/pt.
+// rc : TRUE if tracklet crosses rows
+// sgn : TRUE if track has same sign with magnetic field
+// chg : -1 for negative particles, +1 for the rest
+
+ const AliTRDrecoParam* const recoParam = fkReconstructor->GetRecoParam();
+ if(!recoParam) return 0.;
+ Double_t par[2]={0.};
+ if(rc) recoParam->GetYcorrTailCancel(2, par);
+ else{
+ if(sgn && 1./fPt > 1.5) recoParam->GetYcorrTailCancel(1, par);
+ else if(!sgn) recoParam->GetYcorrTailCancel(0, par);
+ }
+ return par[0]+par[1]*chg/fPt;
+}
+
+
+//____________________________________________________________________
+Float_t AliTRDseedV1::GetQperTB(Int_t tb) const
+{
+ //
+ // Charge of the clusters at timebin
+ //
+ Float_t q = 0;
+ if(fClusters[tb] /*&& fClusters[tb]->IsInChamber()*/)
+ q += TMath::Abs(fClusters[tb]->GetQ());
+ if(fClusters[tb+kNtb] /*&& fClusters[tb+kNtb]->IsInChamber()*/)
+ q += TMath::Abs(fClusters[tb+kNtb]->GetQ());
+ return q/TMath::Sqrt(1. + fYref[1]*fYref[1] + fZref[1]*fZref[1]);
+}
+
+//____________________________________________________________________
+Float_t AliTRDseedV1::GetdQdl() const
+{
+// Calculate total charge / tracklet length for 1D PID
+//
+ Float_t Q = GetCharge(kTRUE);
+ return Q/TMath::Sqrt(1. + fYref[1]*fYref[1] + fZref[1]*fZref[1]);
+}
+
//____________________________________________________________________
Float_t AliTRDseedV1::GetdQdl(Int_t ic, Float_t *dl) const
{
//
Double_t p = fPt*TMath::Sqrt(1.+fZref[1]*fZref[1]);
- Double_t p2 = p*p;
- Double_t tgl2 = fZref[1]*fZref[1];
- Double_t pt2 = fPt*fPt;
if(err){
- Double_t s2 =
+ Double_t p2 = p*p;
+ Double_t tgl2 = fZref[1]*fZref[1];
+ Double_t pt2 = fPt*fPt;
+ Double_t s2 =
p2*tgl2*pt2*pt2*fRefCov[4]
-2.*p2*fZref[1]*fPt*pt2*fRefCov[5]
+p2*pt2*fRefCov[6];
return p;
}
+
//____________________________________________________________________
-Float_t AliTRDseedV1::GetOccupancyTB() const
+Int_t AliTRDseedV1::GetTBoccupancy() const
{
-// Returns procentage of TB occupied by clusters
+// Returns no. of TB occupied by clusters
Int_t n(0);
- AliTRDcluster *c(NULL);
- for(int ic=0; ic<AliTRDtrackerV1::GetNTimeBins(); ic++){
- if(!(c = fClusters[ic]) && !(c = fClusters[ic+kNtb])) continue;
+ for(int ic(0); ic<kNtb; ic++){
+ if(!fClusters[ic] && !fClusters[ic+kNtb]) continue;
n++;
}
+ return n;
+}
+
+//____________________________________________________________________
+Int_t AliTRDseedV1::GetTBcross() const
+{
+// Returns no. of TB occupied by 2 clusters for pad row cross tracklets
- return Float_t(n)/AliTRDtrackerV1::GetNTimeBins();
+ if(!IsRowCross()) return 0;
+ Int_t n(0);
+ for(int ic(0); ic<kNtb; ic++){
+ if(fClusters[ic] && fClusters[ic+kNtb]) n++;
+ }
+ return n;
}
//____________________________________________________________________
// - Neural Network [default] - option "nn"
// - 2D Likelihood - option "!nn"
+ AliWarning(Form("Obsolete function. Use AliTRDPIDResponse::GetResponse() instead."));
+
AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
if (!calibration) {
AliError("No access to calibration data");
}
//____________________________________________________________________
-void AliTRDseedV1::GetCovAt(Double_t x, Double_t *cov) const
+void AliTRDseedV1::GetCovAt(Double_t /*x*/, Double_t *cov) const
{
// Computes covariance in the y-z plane at radial point x (in tracking coordinates)
// and returns the results in the preallocated array cov[3] as :
//
- Double_t xr = fX0-x;
- Double_t sy2 = fCov[0] +2.*xr*fCov[1] + xr*xr*fCov[2];
+ //Double_t xr = fX0-x;
+ Double_t sy2 = fCov[0];// +2.*xr*fCov[1] + xr*xr*fCov[2];
Double_t sz2 = fS2Z;
//GetPadLength()*GetPadLength()/12.;
if(fkReconstructor){
Double_t sys[15]; memset(sys, 0, 15*sizeof(Double_t));
fkReconstructor->GetRecoParam()->GetSysCovMatrix(sys);
- sy2 += sys[0];
- sz2 += sys[1];
+// sy2 += sys[0];
+// sz2 += sys[1];
}
// rotate covariance matrix if no RC
cov[0] = (sy2+t2*sz2)*correction;
cov[1] = GetTilt()*(sz2 - sy2)*correction;
cov[2] = (t2*sy2+sz2)*correction;
- } else {
- cov[0] = sy2; cov[1] = 0.; cov[2] = sy2;
- }
+ } else {
+ cov[0] = sy2; cov[1] = 0.; cov[2] = sz2;
+ }
AliDebug(4, Form("C(%6.1f %+6.3f %6.1f) RC[%c]", 1.e4*TMath::Sqrt(cov[0]), cov[1], 1.e4*TMath::Sqrt(cov[2]), IsRowCross()?'y':'n'));
}
}
+
//____________________________________________________________________
-Bool_t AliTRDseedV1::AttachClusters(AliTRDtrackingChamber *const chamber, Bool_t tilt)
+Bool_t AliTRDseedV1::AttachClusters(AliTRDtrackingChamber *const chamber, Bool_t tilt, Bool_t chgPos, Int_t ev)
{
//
// Projective algorithm to attach clusters to seeding tracklets. The following steps are performed :
// Parameters
// - chamber : pointer to tracking chamber container used to search the tracklet
// - tilt : switch for tilt correction during road building [default true]
+// - chgPos : mark same[kFALSE] and opposite[kTRUE] sign tracks with respect to Bz field sign [default true]
+// - ev : event number for debug purposes [default = -1]
// Output
// - true : if tracklet found successfully. Failure can happend because of the following:
// -
// Detailed description
-//
+//
// We start up by defining the track direction in the xy plane and roads. The roads are calculated based
// on tracking information (variance in the r-phi direction) and estimated variance of the standard
// clusters (see AliTRDcluster::SetSigmaY2()) corrected for tilt (see GetCovAt()). From this the road is
// END_LATEX
//
// Author : Alexandru Bercuci <A.Bercuci@gsi.de>
-// Debug : level >3
+// Debug : level = 2 for calibration
+// level = 3 for visualization in the track SR
+// level = 4 for full visualization including digit level
const AliTRDrecoParam* const recoParam = fkReconstructor->GetRecoParam(); //the dynamic cast in GetRecoParam is slow, so caching the pointer to it
AliError("Tracklets can not be used without a valid RecoParam.");
return kFALSE;
}
+ AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
+ if (!calibration) {
+ AliError("No access to calibration data");
+ return kFALSE;
+ }
+ // Retrieve the CDB container class with the parametric likelihood
+ const AliTRDCalTrkAttach *attach = calibration->GetAttachObject();
+ if (!attach) {
+ AliError("No usable AttachClusters calib object.");
+ return kFALSE;
+ }
+
// Initialize reco params for this tracklet
// 1. first time bin in the drift region
Int_t t0 = 14;
Int_t kClmin = Int_t(recoParam->GetFindableClusters()*AliTRDtrackerV1::GetNTimeBins());
+ Int_t kTBmin = 4;
- Double_t sysCov[5]; recoParam->GetSysCovMatrix(sysCov);
+ Double_t sysCov[5]; recoParam->GetSysCovMatrix(sysCov);
Double_t s2yTrk= fRefCov[0],
s2yCl = 0.,
s2zCl = GetPadLength()*GetPadLength()/12.,
syRef = TMath::Sqrt(s2yTrk),
t2 = GetTilt()*GetTilt();
//define roads
- Double_t kroady = 1., //recoParam->GetRoad1y();
- kroadz = GetPadLength() * recoParam->GetRoadzMultiplicator() + 1.;
+ const Double_t kroady = 3.; //recoParam->GetRoad1y();
+ const Double_t kroadz = GetPadLength() * recoParam->GetRoadzMultiplicator() + 1.;
// define probing cluster (the perfect cluster) and default calibration
Short_t sig[] = {0, 0, 10, 30, 10, 0,0};
AliTRDcluster cp(fDet, 6, 75, 0, sig, 0);
if(fkReconstructor->IsHLT()) cp.SetRPhiMethod(AliTRDcluster::kCOG);
if(!IsCalibrated()) Calibrate();
- AliDebug(4, "");
- AliDebug(4, Form("syKalman[%f] rY[%f] rZ[%f]", syRef, kroady, kroadz));
+/* Int_t kroadyShift(0);
+ Float_t bz(AliTrackerBase::GetBz());
+ if(TMath::Abs(bz)>2.){
+ if(bz<0.) kroadyShift = chgPos ? +1 : -1;
+ else kroadyShift = chgPos ? -1 : +1;
+ }*/
+ AliDebug(4, Form("\n syTrk[cm]=%4.2f dydxTrk[deg]=%+6.2f Chg[%c] rY[cm]=%4.2f rZ[cm]=%5.2f TC[%c]", syRef, TMath::ATan(fYref[1])*TMath::RadToDeg(), chgPos?'+':'-', kroady, kroadz, tilt?'y':'n'));
+ Double_t phiTrk(TMath::ATan(fYref[1])),
+ thtTrk(TMath::ATan(fZref[1]));
// working variables
const Int_t kNrows = 16;
const Int_t kNcls = 3*kNclusters; // buffer size
- AliTRDcluster *clst[kNrows][kNcls];
+ TObjArray clst[kNrows];
Bool_t blst[kNrows][kNcls];
- Double_t cond[4], dx, dy, yt, zt, yres[kNrows][kNcls];
+ Double_t cond[4],
+ dx, dy, dz,
+ yt, zt,
+ zc[kNrows],
+ xres[kNrows][kNcls], yres[kNrows][kNcls], zres[kNrows][kNcls], s2y[kNrows][kNcls];
Int_t idxs[kNrows][kNcls], ncl[kNrows], ncls = 0;
memset(ncl, 0, kNrows*sizeof(Int_t));
+ memset(zc, 0, kNrows*sizeof(Double_t));
+ memset(idxs, 0, kNrows*kNcls*sizeof(Int_t));
+ memset(xres, 0, kNrows*kNcls*sizeof(Double_t));
memset(yres, 0, kNrows*kNcls*sizeof(Double_t));
+ memset(zres, 0, kNrows*kNcls*sizeof(Double_t));
+ memset(s2y, 0, kNrows*kNcls*sizeof(Double_t));
memset(blst, 0, kNrows*kNcls*sizeof(Bool_t)); //this is 8 times faster to memset than "memset(clst, 0, kNrows*kNcls*sizeof(AliTRDcluster*))"
- // Do cluster projection
- AliTRDcluster *c = NULL;
- AliTRDchamberTimeBin *layer = NULL;
+ Double_t roady(0.), s2Mean(0.); Int_t ns2Mean(0);
+
+ // Do cluster projection and pick up cluster candidates
+ AliTRDcluster *c(NULL);
+ AliTRDchamberTimeBin *layer(NULL);
Bool_t kBUFFER = kFALSE;
for (Int_t it = 0; it < kNtb; it++) {
if(!(layer = chamber->GetTB(it))) continue;
dx = fX0 - layer->GetX();
yt = fYref[0] - fYref[1] * dx;
zt = fZref[0] - fZref[1] * dx;
- // get standard cluster error corrected for tilt
+ // get standard cluster error corrected for tilt if selected
cp.SetLocalTimeBin(it);
cp.SetSigmaY2(0.02, fDiffT, fExB, dx, -1./*zt*/, fYref[1]);
- s2yCl = (cp.GetSigmaY2() + sysCov[0] + t2*s2zCl)/(1.+t2);
- // get estimated road
- kroady = 3.*TMath::Sqrt(12.*(s2yTrk + s2yCl));
-
- AliDebug(5, Form(" %2d x[%f] yt[%f] zt[%f]", it, dx, yt, zt));
-
- AliDebug(5, Form(" syTrk[um]=%6.2f syCl[um]=%6.2f syClTlt[um]=%6.2f Ry[mm]=%f", 1.e4*TMath::Sqrt(s2yTrk), 1.e4*TMath::Sqrt(cp.GetSigmaY2()), 1.e4*TMath::Sqrt(s2yCl), 1.e1*kroady));
-
- // select clusters
- cond[0] = yt; cond[2] = kroady;
+ s2yCl = cp.GetSigmaY2() + sysCov[0]; if(!tilt) s2yCl = (s2yCl + t2*s2zCl)/(1.+t2);
+ if(TMath::Abs(it-12)<7){ s2Mean += cp.GetSigmaY2(); ns2Mean++;}
+ // get estimated road in r-phi direction
+ roady = TMath::Min(3.*TMath::Sqrt(12.*(s2yTrk + s2yCl)), kroady);
+
+ AliDebug(5, Form("\n"
+ " %2d xd[cm]=%6.3f yt[cm]=%7.2f zt[cm]=%8.2f\n"
+ " syTrk[um]=%6.2f syCl[um]=%6.2f syClTlt[um]=%6.2f\n"
+ " Ry[mm]=%f"
+ , it, dx, yt, zt
+ , 1.e4*TMath::Sqrt(s2yTrk), 1.e4*TMath::Sqrt(cp.GetSigmaY2()+sysCov[0]), 1.e4*TMath::Sqrt(s2yCl)
+ , 1.e1*roady));
+
+ // get clusters from layer
+ cond[0] = yt/*+0.5*kroadyShift*kroady*/; cond[2] = roady;
cond[1] = zt; cond[3] = kroadz;
- Int_t n=0, idx[6];
- layer->GetClusters(cond, idx, n, 6);
+ Int_t n=0, idx[6]; layer->GetClusters(cond, idx, n, 6);
for(Int_t ic = n; ic--;){
c = (*layer)[idx[ic]];
- dy = yt - c->GetY();
- dy += tilt ? GetTilt() * (c->GetZ() - zt) : 0.;
- // select clusters on a 3 sigmaKalman level
-/* if(tilt && TMath::Abs(dy) > 3.*syRef){
- printf("too large !!!\n");
- continue;
- }*/
+ dx = fX0 - c->GetX();
+ yt = fYref[0] - fYref[1] * dx;
+ zt = fZref[0] - fZref[1] * dx;
+ dz = zt - c->GetZ();
+ dy = yt - (c->GetY() + (tilt ? (GetTilt() * dz) : 0.));
Int_t r = c->GetPadRow();
- AliDebug(5, Form(" -> dy[%f] yc[%f] r[%d]", TMath::Abs(dy), c->GetY(), r));
- clst[r][ncl[r]] = c;
+ clst[r].AddAtAndExpand(c, ncl[r]);
blst[r][ncl[r]] = kTRUE;
idxs[r][ncl[r]] = idx[ic];
+ zres[r][ncl[r]] = dz/GetPadLength();
yres[r][ncl[r]] = dy;
+ xres[r][ncl[r]] = dx;
+ zc[r] = c->GetZ();
+ // TODO temporary solution to avoid divercences in error parametrization
+ s2y[r][ncl[r]] = TMath::Min(c->GetSigmaY2()+sysCov[0], 0.025);
+ AliDebug(5, Form(" -> dy[cm]=%+7.4f yc[cm]=%7.2f row[%d] idx[%2d]", dy, c->GetY(), r, ncl[r]));
ncl[r]++; ncls++;
if(ncl[r] >= kNcls) {
}
if(kBUFFER) break;
}
- AliDebug(4, Form("Found %d clusters. Processing ...", ncls));
if(ncls<kClmin){
AliDebug(1, Form("CLUSTERS FOUND %d LESS THAN THRESHOLD %d.", ncls, kClmin));
SetErrorMsg(kAttachClFound);
+ for(Int_t ir(kNrows);ir--;) clst[ir].Clear();
+ return kFALSE;
+ }
+ if(ns2Mean<kTBmin){
+ AliDebug(1, Form("CLUSTERS IN TimeBins %d LESS THAN THRESHOLD %d.", ns2Mean, kTBmin));
+ SetErrorMsg(kAttachClFound);
+ for(Int_t ir(kNrows);ir--;) clst[ir].Clear();
return kFALSE;
}
+ s2Mean /= ns2Mean; //sMean = TMath::Sqrt(s2Mean);
+ //Double_t sRef(TMath::Sqrt(s2Mean+s2yTrk)); // reference error parameterization
+
+ // organize row candidates
+ Int_t idxRow[kNrows], nrc(0); Double_t zresRow[kNrows];
+ for(Int_t ir(0); ir<kNrows; ir++){
+ idxRow[ir]=-1; zresRow[ir] = 999.;
+ if(!ncl[ir]) continue;
+ // get mean z resolution
+ dz = 0.; for(Int_t ic = ncl[ir]; ic--;) dz += zres[ir][ic]; dz/=ncl[ir];
+ // insert row
+ idxRow[nrc] = ir; zresRow[nrc] = TMath::Abs(dz); nrc++;
+ }
+ AliDebug(4, Form("Found %d clusters in %d rows. Sorting ...", ncls, nrc));
+
+ // sort row candidates
+ if(nrc>=2){
+ if(nrc==2){
+ if(zresRow[0]>zresRow[1]){ // swap
+ Int_t itmp=idxRow[1]; idxRow[1] = idxRow[0]; idxRow[0] = itmp;
+ Double_t dtmp=zresRow[1]; zresRow[1] = zresRow[0]; zresRow[0] = dtmp;
+ }
+ if(TMath::Abs(idxRow[1] - idxRow[0]) != 1){
+ SetErrorMsg(kAttachRowGap);
+ AliDebug(2, Form("Rows attached not continuous. Select first candidate.\n"
+ " row[%2d] Ncl[%2d] <dz>[cm]=%+8.2f row[%2d] Ncl[%2d] <dz>[cm]=%+8.2f",
+ idxRow[0], ncl[idxRow[0]], zresRow[0], idxRow[1], idxRow[1]<0?0:ncl[idxRow[1]], zresRow[1]));
+ nrc=1; idxRow[1] = -1; zresRow[1] = 999.;
+ }
+ } else {
+ Int_t idx0[kNrows];
+ TMath::Sort(nrc, zresRow, idx0, kFALSE);
+ nrc = 3; // select only maximum first 3 candidates
+ Int_t iatmp[] = {-1, -1, -1}; Double_t datmp[] = {999., 999., 999.};
+ for(Int_t irc(0); irc<nrc; irc++){
+ iatmp[irc] = idxRow[idx0[irc]];
+ datmp[irc] = zresRow[idx0[irc]];
+ }
+ idxRow[0] = iatmp[0]; zresRow[0] = datmp[0];
+ idxRow[1] = iatmp[1]; zresRow[1] = datmp[1];
+ idxRow[2] = iatmp[2]; zresRow[2] = datmp[2]; // temporary
+ if(TMath::Abs(idxRow[1] - idxRow[0]) != 1){
+ SetErrorMsg(kAttachRowGap);
+ AliDebug(2, Form("Rows attached not continuous. Turn on selection.\n"
+ "row[%2d] Ncl[%2d] <dz>[cm]=%+8.2f\n"
+ "row[%2d] Ncl[%2d] <dz>[cm]=%+8.2f\n"
+ "row[%2d] Ncl[%2d] <dz>[cm]=%+8.2f",
+ idxRow[0], ncl[idxRow[0]], zresRow[0],
+ idxRow[1], ncl[idxRow[1]], zresRow[1],
+ idxRow[2], ncl[idxRow[2]], zresRow[2]));
+ if(TMath::Abs(idxRow[0] - idxRow[2]) == 1){ // select second candidate
+ AliDebug(2, "Solved ! Remove second candidate.");
+ nrc = 2;
+ idxRow[1] = idxRow[2]; zresRow[1] = zresRow[2]; // swap
+ idxRow[2] = -1; zresRow[2] = 999.; // remove
+ } else if(TMath::Abs(idxRow[1] - idxRow[2]) == 1){
+ if(ncl[idxRow[1]]+ncl[idxRow[2]] > ncl[idxRow[0]]){
+ AliDebug(2, "Solved ! Remove first candidate.");
+ nrc = 2;
+ idxRow[0] = idxRow[1]; zresRow[0] = zresRow[1]; // swap
+ idxRow[1] = idxRow[2]; zresRow[1] = zresRow[2]; // swap
+ } else {
+ AliDebug(2, "Solved ! Remove second and third candidate.");
+ nrc = 1;
+ idxRow[1] = -1; zresRow[1] = 999.; // remove
+ idxRow[2] = -1; zresRow[2] = 999.; // remove
+ }
+ } else {
+ AliDebug(2, "Unsolved !!! Remove second and third candidate.");
+ nrc = 1;
+ idxRow[1] = -1; zresRow[1] = 999.; // remove
+ idxRow[2] = -1; zresRow[2] = 999.; // remove
+ }
+ } else { // remove temporary candidate
+ nrc = 2;
+ idxRow[2] = -1; zresRow[2] = 999.;
+ }
+ }
+ }
+ AliDebug(4, Form("Sorted row candidates:\n"
+ " row[%2d] Ncl[%2d] <dz>[cm]=%+8.2f row[%2d] Ncl[%2d] <dz>[cm]=%+8.2f"
+ , idxRow[0], ncl[idxRow[0]], zresRow[0], idxRow[1], idxRow[1]<0?0:ncl[idxRow[1]], zresRow[1]));
+
+ // initialize debug streamer
+ TTreeSRedirector *pstreamer(NULL);
+ if((recoParam->GetStreamLevel(AliTRDrecoParam::kTracker) > 3 && fkReconstructor->IsDebugStreaming())||
+ AliTRDReconstructor::GetStreamLevel()>30) pstreamer = fkReconstructor->GetDebugStream(AliTRDrecoParam::kTracker);
+ if(pstreamer){
+ // save config. for calibration
+ TVectorD vdy[2], vdx[2], vs2[2];
+ for(Int_t jr(0); jr<nrc; jr++){
+ Int_t ir(idxRow[jr]);
+ vdx[jr].ResizeTo(ncl[ir]); vdy[jr].ResizeTo(ncl[ir]); vs2[jr].ResizeTo(ncl[ir]);
+ for(Int_t ic(ncl[ir]); ic--;){
+ vdx[jr](ic) = xres[ir][ic];
+ vdy[jr](ic) = yres[ir][ic];
+ vs2[jr](ic) = s2y[ir][ic];
+ }
+ }
+ (*pstreamer) << "AttachClusters4"
+ << "r0=" << idxRow[0]
+ << "dz0=" << zresRow[0]
+ << "dx0=" << &vdx[0]
+ << "dy0=" << &vdy[0]
+ << "s20=" << &vs2[0]
+ << "r1=" << idxRow[1]
+ << "dz1=" << zresRow[1]
+ << "dx1=" << &vdx[1]
+ << "dy1=" << &vdy[1]
+ << "s21=" << &vs2[1]
+ << "\n";
+ vdx[0].Clear(); vdy[0].Clear(); vs2[0].Clear();
+ vdx[1].Clear(); vdy[1].Clear(); vs2[1].Clear();
+ if(recoParam->GetStreamLevel(AliTRDrecoParam::kTracker) > 4 ||AliTRDReconstructor::GetStreamLevel()>4){
+ Int_t idx(idxRow[1]);
+ if(idx<0){
+ for(Int_t ir(0); ir<kNrows; ir++){
+ if(clst[ir].GetEntries()>0) continue;
+ idx = ir;
+ break;
+ }
+ }
+ (*pstreamer) << "AttachClusters5"
+ << "c0.=" << &clst[idxRow[0]]
+ << "c1.=" << &clst[idx]
+ << "\n";
+ }
+ }
- // analyze each row individualy
- Bool_t kRowSelection(kFALSE);
- Double_t mean[]={1.e3, 1.e3, 1.3}, syDis[]={1.e3, 1.e3, 1.3};
- Int_t nrow[] = {0, 0, 0}, rowId[] = {-1, -1, -1}, nr = 0, lr=-1;
- TVectorD vdy[3];
- for(Int_t ir=0; ir<kNrows; ir++){
- if(!(ncl[ir])) continue;
- if(lr>0 && ir-lr != 1){
- AliDebug(2, "Rows attached not continuous. Turn on selection.");
- kRowSelection=kTRUE;
+//=======================================================================================
+ // Analyse cluster topology
+ Double_t f[kNcls], // likelihood factors for segments
+ r[2][kNcls], // d(dydx) of tracklet candidate with respect to track
+ xm[2][kNcls], // mean <x>
+ ym[2][kNcls], // mean <y>
+ sm[2][kNcls], // mean <s_y>
+ s[2][kNcls], // sigma_y
+ p[2][kNcls], // prob of Gauss
+ q[2][kNcls]; // charge/segment
+ memset(f, 0, kNcls*sizeof(Double_t));
+ Int_t index[2][kNcls], n[2][kNcls];
+ memset(n, 0, 2*kNcls*sizeof(Int_t));
+ Int_t mts(0), nts[2] = {0, 0}; // no of tracklet segments in row
+ AliTRDpadPlane *pp(AliTRDtransform::Geometry().GetPadPlane(fDet));
+ AliTRDtrackletOflHelper helper;
+ Int_t lyDet(AliTRDgeometry::GetLayer(fDet));
+ for(Int_t jr(0), n0(0); jr<nrc; jr++){
+ Int_t ir(idxRow[jr]);
+ // cluster segmentation
+ Bool_t kInit(kFALSE);
+ if(jr==0){
+ n0 = helper.Init(pp, &clst[ir]); kInit = kTRUE;
+ if(!n0 || (helper.ClassifyTopology() == AliTRDtrackletOflHelper::kNormal)){
+ nts[jr] = 1; memset(index[jr], 0, ncl[ir]*sizeof(Int_t));
+ n[jr][0] = ncl[ir];
+ }
}
+ if(!n[jr][0]){
+ nts[jr] = AliTRDtrackletOflHelper::Segmentation(ncl[ir], xres[ir], yres[ir], index[jr]);
+ for(Int_t ic(ncl[ir]);ic--;) n[jr][index[jr][ic]]++;
+ }
+ mts += nts[jr];
+
+ // tracklet segment processing
+ for(Int_t its(0); its<nts[jr]; its++){
+ if(n[jr][its]<=2) { // don't touch small segments
+ xm[jr][its] = 0.;ym[jr][its] = 0.;sm[jr][its] = 0.;
+ for(Int_t ic(ncl[ir]); ic--;){
+ if(its != index[jr][ic]) continue;
+ ym[jr][its] += yres[ir][ic];
+ xm[jr][its] += xres[ir][ic];
+ sm[jr][its] += TMath::Sqrt(s2y[ir][ic]);
+ }
+ if(n[jr][its]==2){ xm[jr][its] *= 0.5; ym[jr][its] *= 0.5; sm[jr][its] *= 0.5;}
+ xm[jr][its]= fX0 - xm[jr][its];
+ r[jr][its] = 0.;
+ s[jr][its] = 1.e-5;
+ p[jr][its] = 1.;
+ q[jr][its] = -1.;
+ continue;
+ }
+
+ // for longer tracklet segments
+ if(!kInit) n0 = helper.Init(pp, &clst[ir], index[jr], its);
+ Int_t n1 = helper.GetRMS(r[jr][its], ym[jr][its], s[jr][its], fX0/*xm[jr][its]*/);
+ p[jr][its] = Double_t(n1)/n0;
+ sm[jr][its] = helper.GetSyMean();
+ q[jr][its] = helper.GetQ()/TMath::Sqrt(1. + fYref[1]*fYref[1] + fZref[1]*fZref[1]);
+ xm[jr][its] = fX0;
+ Double_t dxm= fX0 - xm[jr][its];
+ yt = fYref[0] - fYref[1]*dxm;
+ zt = fZref[0] - fZref[1]*dxm;
+ // correct tracklet fit for tilt
+ ym[jr][its]+= GetTilt()*(zt - zc[ir]);
+ r[jr][its] += GetTilt() * fZref[1];
+ // correct tracklet fit for track position/inclination
+ ym[jr][its] = yt - ym[jr][its];
+ r[jr][its] = (r[jr][its] - fYref[1])/(1+r[jr][its]*fYref[1]);
+ // report inclination in radians
+ r[jr][its] = TMath::ATan(r[jr][its]);
+ if(jr) continue; // calculate only for first row likelihoods
+
+ f[its] = attach->CookLikelihood(chgPos, lyDet, fPt, phiTrk, n[jr][its], ym[jr][its]/*sRef*/, r[jr][its]*TMath::RadToDeg(), s[jr][its]/sm[jr][its]);
+ }
+ }
+ AliDebug(4, Form(" Tracklet candidates: row[%2d] = %2d row[%2d] = %2d:", idxRow[0], nts[0], idxRow[1], nts[1]));
+ if(AliLog::GetDebugLevel("TRD", "AliTRDseedV1")>3){
+ for(Int_t jr(0); jr<nrc; jr++){
+ Int_t ir(idxRow[jr]);
+ for(Int_t its(0); its<nts[jr]; its++){
+ printf(" segId[%2d] row[%2d] Ncl[%2d] x[cm]=%7.2f dz[pu]=%4.2f dy[mm]=%+7.3f r[deg]=%+6.2f p[%%]=%6.2f s[um]=%7.2f\n",
+ its, ir, n[jr][its], xm[jr][its], zresRow[jr], 1.e1*ym[jr][its], r[jr][its]*TMath::RadToDeg(), 100.*p[jr][its], 1.e4*s[jr][its]);
+ }
+ }
+ }
+ if(!pstreamer &&
+ ( (recoParam->GetStreamLevel(AliTRDrecoParam::kTracker) > 2 && fkReconstructor->IsDebugStreaming()) ||
+ AliTRDReconstructor::GetStreamLevel()>2 )
+ ) pstreamer = fkReconstructor->GetDebugStream(AliTRDrecoParam::kTracker);
+ if(pstreamer){
+ // save config. for calibration
+ TVectorD vidx, vn, vx, vy, vr, vs, vsm, vp, vf;
+ vidx.ResizeTo(ncl[idxRow[0]]+(idxRow[1]<0?0:ncl[idxRow[1]]));
+ vn.ResizeTo(mts);
+ vx.ResizeTo(mts);
+ vy.ResizeTo(mts);
+ vr.ResizeTo(mts);
+ vs.ResizeTo(mts);
+ vsm.ResizeTo(mts);
+ vp.ResizeTo(mts);
+ vf.ResizeTo(mts);
+ for(Int_t jr(0), jts(0), jc(0); jr<nrc; jr++){
+ Int_t ir(idxRow[jr]);
+ for(Int_t its(0); its<nts[jr]; its++, jts++){
+ vn[jts] = n[jr][its];
+ vx[jts] = xm[jr][its];
+ vy[jts] = ym[jr][its];
+ vr[jts] = r[jr][its];
+ vs[jts] = s[jr][its];
+ vsm[jts]= sm[jr][its];
+ vp[jts] = p[jr][its];
+ vf[jts] = jr?-1.:f[its];
+ }
+ for(Int_t ic(0); ic<ncl[ir]; ic++, jc++) vidx[jc] = index[jr][ic];
+ }
+ (*pstreamer) << "AttachClusters3"
+ << "idx=" << &vidx
+ << "n=" << &vn
+ << "x=" << &vx
+ << "y=" << &vy
+ << "r=" << &vr
+ << "s=" << &vs
+ << "sm=" << &vsm
+ << "p=" << &vp
+ << "f=" << &vf
+ << "\n";
+ }
- AliDebug(5, Form(" r[%d] n[%d]", ir, ncl[ir]));
- // Evaluate truncated mean on the y direction
- if(ncl[ir] < 4) continue;
- AliMathBase::EvaluateUni(ncl[ir], yres[ir], mean[nr], syDis[nr], Int_t(ncl[ir]*.8));
-
- // TODO check mean and sigma agains cluster resolution !!
- AliDebug(4, Form(" m_%d[%+5.3f (%5.3fs)] s[%f]", nr, mean[nr], TMath::Abs(mean[nr]/syDis[nr]), syDis[nr]));
- // remove outliers based on a 3 sigmaDistr level
- Bool_t kFOUND = kFALSE;
- for(Int_t ic = ncl[ir]; ic--;){
- if(yres[ir][ic] - mean[nr] > 3. * syDis[nr]){
- blst[ir][ic] = kFALSE; continue;
+//=========================================================
+ // Get seed tracklet segment
+ Int_t idx2[kNcls]; memset(idx2, 0, kNcls*sizeof(Int_t)); // seeding indexing
+ if(nts[0]>1) TMath::Sort(nts[0], f, idx2);
+ Int_t is(idx2[0]); // seed index
+ Int_t idxTrklt[kNcls],
+ kts(0),
+ nTrklt(n[0][is]);
+ Double_t fTrklt(f[is]),
+ rTrklt(r[0][is]),
+ yTrklt(ym[0][is]),
+ sTrklt(s[0][is]),
+ smTrklt(sm[0][is]),
+ xTrklt(xm[0][is]),
+ pTrklt(p[0][is]),
+ qTrklt(q[0][is]);
+ memset(idxTrklt, 0, kNcls*sizeof(Int_t));
+ // check seed idx2[0] exit if not found
+ if(f[is]<1.e-2){
+ AliDebug(1, Form("Seed seg[%d] row[%2d] n[%2d] f[%f]<0.01.", is, idxRow[0], n[0][is], f[is]));
+ SetErrorMsg(kAttachClAttach);
+ if(!pstreamer &&
+ ( (recoParam->GetStreamLevel(AliTRDrecoParam::kTracker) > 1 && fkReconstructor->IsDebugStreaming()) ||
+ AliTRDReconstructor::GetStreamLevel()>1 )
+ ) pstreamer = fkReconstructor->GetDebugStream(AliTRDrecoParam::kTracker);
+ if(pstreamer){
+ UChar_t stat(0);
+ if(IsKink()) SETBIT(stat, 1);
+ if(IsStandAlone()) SETBIT(stat, 2);
+ if(IsRowCross()) SETBIT(stat, 3);
+ SETBIT(stat, 4); // set error bit
+ TVectorD vidx; vidx.ResizeTo(1); vidx[0] = is;
+ (*pstreamer) << "AttachClusters2"
+ << "stat=" << stat
+ << "ev=" << ev
+ << "chg=" << chgPos
+ << "det=" << fDet
+ << "x0=" << fX0
+ << "y0=" << fYref[0]
+ << "z0=" << fZref[0]
+ << "phi=" << phiTrk
+ << "tht=" << thtTrk
+ << "pt=" << fPt
+ << "s2Trk=" << s2yTrk
+ << "s2Cl=" << s2Mean
+ << "idx=" << &vidx
+ << "n=" << nTrklt
+ << "f=" << fTrklt
+ << "x=" << xTrklt
+ << "y=" << yTrklt
+ << "r=" << rTrklt
+ << "s=" << sTrklt
+ << "sm=" << smTrklt
+ << "p=" << pTrklt
+ << "q=" << qTrklt
+ << "\n";
+ }
+ return kFALSE;
+ }
+ AliDebug(2, Form("Seed seg[%d] row[%2d] n[%2d] dy[%f] r[%+5.2f] s[%+5.2f] f[%5.3f] q[%6.2f]", is, idxRow[0], n[0][is], ym[0][is], r[0][is]*TMath::RadToDeg(), s[0][is]/sm[0][is], f[is], q[0][is]));
+
+ // save seeding segment in the helper
+ idxTrklt[kts++] = is;
+ helper.Init(pp, &clst[idxRow[0]], index[0], is);
+ AliTRDtrackletOflHelper test; // helper to test segment expantion
+ Float_t rcLikelihood(0.); SetBit(kRowCross, kFALSE);
+ Double_t dyRez[kNcls]; Int_t idx3[kNcls];
+
+ //=========================================================
+ // Define filter parameters from OCDB
+ Int_t kNSgmDy[2]; attach->GetNsgmDy(kNSgmDy[0], kNSgmDy[1]);
+ Float_t kLikeMinRelDecrease[2]; attach->GetLikeMinRelDecrease(kLikeMinRelDecrease[0], kLikeMinRelDecrease[1]);
+ Float_t kRClikeLimit(attach->GetRClikeLimit());
+
+ //=========================================================
+ // Try attaching next segments from first row (if any)
+ if(nts[0]>1){
+ Int_t jr(0), ir(idxRow[jr]);
+ // organize secondary sgms. in decreasing order of their distance from seed
+ memset(dyRez, 0, nts[jr]*sizeof(Double_t));
+ for(Int_t jts(1); jts<nts[jr]; jts++) {
+ Int_t its(idx2[jts]);
+ Double_t rot(TMath::Tan(r[0][is]));
+ dyRez[its] = TMath::Abs(ym[0][is] - ym[jr][its] + rot*(xm[0][is]-xm[jr][its]));
+ }
+ TMath::Sort(nts[jr], dyRez, idx3, kFALSE);
+ for (Int_t jts(1); jts<nts[jr]; jts++) {
+ Int_t its(idx3[jts]);
+ if(dyRez[its] > kNSgmDy[jr]*smTrklt){
+ AliDebug(2, Form("Reject seg[%d] row[%2d] n[%2d] dy[%f] > %d*s[%f].", its, idxRow[jr], n[jr][its], dyRez[its], kNSgmDy[jr], kNSgmDy[jr]*smTrklt));
+ continue;
+ }
+
+ test = helper;
+ Int_t n0 = test.Expand(&clst[ir], index[jr], its);
+ Double_t rt, dyt, st, xt, smt, pt, qt, ft;
+ Int_t n1 = test.GetRMS(rt, dyt, st, fX0/*xt*/);
+ pt = Double_t(n1)/n0;
+ smt = test.GetSyMean();
+ qt = test.GetQ()/TMath::Sqrt(1. + fYref[1]*fYref[1] + fZref[1]*fZref[1]);
+ xt = fX0;
+ // correct position
+ Double_t dxm= fX0 - xt;
+ yt = fYref[0] - fYref[1]*dxm;
+ zt = fZref[0] - fZref[1]*dxm;
+ // correct tracklet fit for tilt
+ dyt+= GetTilt()*(zt - zc[idxRow[0]]);
+ rt += GetTilt() * fZref[1];
+ // correct tracklet fit for track position/inclination
+ dyt = yt - dyt;
+ rt = (rt - fYref[1])/(1+rt*fYref[1]);
+ // report inclination in radians
+ rt = TMath::ATan(rt);
+
+ ft = (n0>=2) ? attach->CookLikelihood(chgPos, lyDet, fPt, phiTrk, n0, dyt/*sRef*/, rt*TMath::RadToDeg(), st/smt) : 0.;
+ Bool_t kAccept(ft>=fTrklt*(1.-kLikeMinRelDecrease[jr]));
+
+ AliDebug(2, Form("%s seg[%d] row[%2d] n[%2d] dy[%f] r[%+5.2f] s[%+5.2f] f[%f] < %4.2f*F[%f].",
+ (kAccept?"Adding":"Reject"), its, idxRow[jr], n0, dyt, rt*TMath::RadToDeg(), st/smt, ft, 1.-kLikeMinRelDecrease[jr], fTrklt*(1.-kLikeMinRelDecrease[jr])));
+ if(kAccept){
+ idxTrklt[kts++] = its;
+ nTrklt = n0;
+ fTrklt = ft;
+ rTrklt = rt;
+ yTrklt = dyt;
+ sTrklt = st;
+ smTrklt= smt;
+ xTrklt = xt;
+ pTrklt = pt;
+ qTrklt = qt;
+ helper.Expand(&clst[ir], index[jr], its);
}
- nrow[nr]++; rowId[nr]=ir; kFOUND = kTRUE;
}
- if(kFOUND){
- vdy[nr].Use(nrow[nr], yres[ir]);
- nr++;
+ }
+
+ //=========================================================
+ // Try attaching next segments from second row (if any)
+ if(nts[1] && (rcLikelihood = zresRow[0]/zresRow[1]) > kRClikeLimit){
+ // organize secondaries in decreasing order of their distance from seed
+ Int_t jr(1), ir(idxRow[jr]);
+ memset(dyRez, 0, nts[jr]*sizeof(Double_t));
+ Double_t rot(TMath::Tan(r[0][is]));
+ for(Int_t jts(0); jts<nts[jr]; jts++) {
+ dyRez[jts] = TMath::Abs(ym[0][is] - ym[jr][jts] + rot*(xm[0][is]-xm[jr][jts]));
+ }
+ TMath::Sort(nts[jr], dyRez, idx3, kFALSE);
+ for (Int_t jts(0); jts<nts[jr]; jts++) {
+ Int_t its(idx3[jts]);
+ if(dyRez[its] > kNSgmDy[jr]*smTrklt){
+ AliDebug(2, Form("Reject seg[%d] row[%2d] n[%2d] dy[%f] > %d*s[%f].", its, idxRow[jr], n[jr][its], dyRez[its], kNSgmDy[jr], kNSgmDy[jr]*smTrklt));
+ continue;
+ }
+
+ test = helper;
+ Int_t n0 = test.Expand(&clst[ir], index[jr], its);
+ Double_t rt, dyt, st, xt, smt, pt, qt, ft;
+ Int_t n1 = test.GetRMS(rt, dyt, st, fX0/*xt*/);
+ pt = Double_t(n1)/n0;
+ smt = test.GetSyMean();
+ qt = test.GetQ()/TMath::Sqrt(1. + fYref[1]*fYref[1] + fZref[1]*fZref[1]);
+ xt = fX0;
+ // correct position
+ Double_t dxm= fX0 - xt;
+ yt = fYref[0] - fYref[1]*dxm;
+ zt = fZref[0] - fZref[1]*dxm;
+ // correct tracklet fit for tilt
+ dyt+= GetTilt()*(zt - zc[idxRow[0]]);
+ rt += GetTilt() * fZref[1];
+ // correct tracklet fit for track position/inclination
+ dyt = yt - dyt;
+ rt = (rt - fYref[1])/(1+rt*fYref[1]);
+ // report inclination in radians
+ rt = TMath::ATan(rt);
+
+ ft = (n0>=2) ? attach->CookLikelihood(chgPos, lyDet, fPt, phiTrk, n0, dyt/*sRef*/, rt*TMath::RadToDeg(), st/smt) : 0.;
+ Bool_t kAccept(ft>=fTrklt*(1.-kLikeMinRelDecrease[jr]));
+
+ AliDebug(2, Form("%s seg[%d] row[%2d] n[%2d] dy[%f] r[%+5.2f] s[%+5.2f] f[%f] < %4.2f*F[%f].",
+ (kAccept?"Adding":"Reject"), its, idxRow[jr], n0, dyt, rt*TMath::RadToDeg(), st/smt, ft, 1.-kLikeMinRelDecrease[jr], fTrklt*(1.-kLikeMinRelDecrease[jr])));
+ if(kAccept){
+ idxTrklt[kts++] = its;
+ nTrklt = n0;
+ fTrklt = ft;
+ rTrklt = rt;
+ yTrklt = dyt;
+ sTrklt = st;
+ smTrklt= smt;
+ xTrklt = xt;
+ pTrklt = pt;
+ qTrklt = qt;
+ helper.Expand(&clst[ir], index[jr], its);
+ SetBit(kRowCross, kTRUE); // mark pad row crossing
+ }
}
- lr = ir; if(nr>=3) break;
}
- if(recoParam->GetStreamLevel(AliTRDrecoParam::kTracker) > 3 && fkReconstructor->IsDebugStreaming()){
- TTreeSRedirector &cstreamer = *fkReconstructor->GetDebugStream(AliTRDrecoParam::kTracker);
+ // clear local copy of clusters
+ for(Int_t ir(0); ir<kNrows; ir++) clst[ir].Clear();
+
+ if(!pstreamer &&
+ ((recoParam->GetStreamLevel(AliTRDrecoParam::kTracker) > 1 && fkReconstructor->IsDebugStreaming()) ||
+ AliTRDReconstructor::GetStreamLevel()>1 )
+ ) pstreamer = fkReconstructor->GetDebugStream(AliTRDrecoParam::kTracker);
+ if(pstreamer){
UChar_t stat(0);
if(IsKink()) SETBIT(stat, 1);
if(IsStandAlone()) SETBIT(stat, 2);
- cstreamer << "AttachClusters"
+ if(IsRowCross()) SETBIT(stat, 3);
+ TVectorD vidx; vidx.ResizeTo(kts);
+ for(Int_t its(0); its<kts; its++) vidx[its] = idxTrklt[its];
+ (*pstreamer) << "AttachClusters2"
<< "stat=" << stat
+ << "ev=" << ev
+ << "chg=" << chgPos
<< "det=" << fDet
+ << "x0=" << fX0
+ << "y0=" << fYref[0]
+ << "z0=" << fZref[0]
+ << "phi=" << phiTrk
+ << "tht=" << thtTrk
<< "pt=" << fPt
- << "s2y=" << s2yTrk
- << "r0=" << rowId[0]
- << "dy0=" << &vdy[0]
- << "m0=" << mean[0]
- << "s0=" << syDis[0]
- << "r1=" << rowId[1]
- << "dy1=" << &vdy[1]
- << "m1=" << mean[1]
- << "s1=" << syDis[1]
- << "r2=" << rowId[2]
- << "dy2=" << &vdy[2]
- << "m2=" << mean[2]
- << "s2=" << syDis[2]
+ << "s2Trk=" << s2yTrk
+ << "s2Cl=" << s2Mean
+ << "idx=" << &vidx
+ << "n=" << nTrklt
+ << "q=" << qTrklt
+ << "f=" << fTrklt
+ << "x=" << xTrklt
+ << "y=" << yTrklt
+ << "r=" << rTrklt
+ << "s=" << sTrklt
+ << "sm=" << smTrklt
+ << "p=" << pTrklt
<< "\n";
}
-
-
- // analyze gap in rows attached
- if(kRowSelection){
- SetErrorMsg(kAttachRowGap);
- Int_t rowRemove(-1);
- if(nr==2){ // select based on minimum distance to track projection
- if(TMath::Abs(mean[0])<TMath::Abs(mean[1])){
- if(nrow[1]>nrow[0]) AliDebug(2, Form("Conflicting mean[%f < %f] but ncl[%d < %d].", TMath::Abs(mean[0]), TMath::Abs(mean[1]), nrow[0], nrow[1]));
- }else{
- if(nrow[1]<nrow[0]) AliDebug(2, Form("Conflicting mean[%f > %f] but ncl[%d > %d].", TMath::Abs(mean[0]), TMath::Abs(mean[1]), nrow[0], nrow[1]));
- Swap(nrow[0],nrow[1]); Swap(rowId[0],rowId[1]);
- Swap(mean[0],mean[1]); Swap(syDis[0],syDis[1]);
- }
- rowRemove=1; nr=1;
- } else if(nr==3){ // select based on 2 consecutive rows
- if(rowId[1]==rowId[0]+1 && rowId[1]!=rowId[2]-1){
- nr=2;rowRemove=2;
- } else if(rowId[1]!=rowId[0]+1 && rowId[1]==rowId[2]-1){
- Swap(nrow[0],nrow[2]); Swap(rowId[0],rowId[2]);
- Swap(mean[0],mean[2]); Swap(syDis[0],syDis[2]);
- nr=2; rowRemove=2;
- }
- }
- if(rowRemove>0){nrow[rowRemove]=0; rowId[rowRemove]=-1;}
- }
- AliDebug(4, Form(" Ncl[%d[%d] + %d[%d] + %d[%d]]", nrow[0], rowId[0], nrow[1], rowId[1], nrow[2], rowId[2]));
-
- if(nr==3){
- SetBit(kRowCross, kTRUE); // mark pad row crossing
- SetErrorMsg(kAttachRow);
- const Float_t am[]={TMath::Abs(mean[0]), TMath::Abs(mean[1]), TMath::Abs(mean[2])};
- AliDebug(4, Form("complex row configuration\n"
- " r[%d] n[%d] m[%6.3f] s[%6.3f]\n"
- " r[%d] n[%d] m[%6.3f] s[%6.3f]\n"
- " r[%d] n[%d] m[%6.3f] s[%6.3f]\n"
- , rowId[0], nrow[0], am[0], syDis[0]
- , rowId[1], nrow[1], am[1], syDis[1]
- , rowId[2], nrow[2], am[2], syDis[2]));
- Int_t id[]={0,1,2}; TMath::Sort(3, am, id, kFALSE);
- // backup
- Int_t rnn[3]; memcpy(rnn, nrow, 3*sizeof(Int_t));
- Int_t rid[3]; memcpy(rid, rowId, 3*sizeof(Int_t));
- Double_t rm[3]; memcpy(rm, mean, 3*sizeof(Double_t));
- Double_t rs[3]; memcpy(rs, syDis, 3*sizeof(Double_t));
- nrow[0]=rnn[id[0]]; rowId[0]=rid[id[0]]; mean[0]=rm[id[0]]; syDis[0]=rs[id[0]];
- nrow[1]=rnn[id[1]]; rowId[1]=rid[id[1]]; mean[1]=rm[id[1]]; syDis[1]=rs[id[1]];
- nrow[2]=0; rowId[2]=-1; mean[2] = 1.e3; syDis[2] = 1.e3;
- AliDebug(4, Form("solved configuration\n"
- " r[%d] n[%d] m[%+6.3f] s[%6.3f]\n"
- " r[%d] n[%d] m[%+6.3f] s[%6.3f]\n"
- " r[%d] n[%d] m[%+6.3f] s[%6.3f]\n"
- , rowId[0], nrow[0], mean[0], syDis[0]
- , rowId[1], nrow[1], mean[1], syDis[1]
- , rowId[2], nrow[2], mean[2], syDis[2]));
- nr=2;
- } else if(nr==2) {
- SetBit(kRowCross, kTRUE); // mark pad row crossing
- if(nrow[1] > nrow[0]){ // swap row order
- Swap(nrow[0],nrow[1]); Swap(rowId[0],rowId[1]);
- Swap(mean[0],mean[1]); Swap(syDis[0],syDis[1]);
- }
+
+
+ //=========================================================
+ // Store clusters
+ Int_t nselected(0), nc(0);
+ TObjArray *selected(helper.GetClusters());
+ if(!selected || !(nselected = selected->GetEntriesFast())){
+ AliError("Cluster candidates missing !!!");
+ SetErrorMsg(kAttachClAttach);
+ return kFALSE;
}
-
- // Select and store clusters
- // We should consider here :
- // 1. How far is the chamber boundary
- // 2. How big is the mean
- Int_t n(0); Float_t dyc[kNclusters]; memset(dyc,0,kNclusters*sizeof(Float_t));
- for (Int_t ir = 0; ir < nr; ir++) {
- Int_t jr(rowId[ir]);
- AliDebug(4, Form(" Attaching Ncl[%d]=%d ...", jr, ncl[jr]));
- for (Int_t ic = 0; ic < ncl[jr]; ic++) {
- if(!blst[jr][ic])continue;
- c = clst[jr][ic];
- Int_t it(c->GetPadTime());
- Int_t idx(it+kNtb*ir);
- if(fClusters[idx]){
- AliDebug(4, Form("Many cluster candidates on row[%2d] tb[%2d].", jr, it));
- // TODO should save also the information on where the multiplicity happened and its size
- SetErrorMsg(kAttachMultipleCl);
- // TODO should also compare with mean and sigma for this row
- if(yres[jr][ic] > dyc[idx]) continue;
- }
-
- // TODO proper indexing of clusters !!
- fIndexes[idx] = chamber->GetTB(it)->GetGlobalIndex(idxs[jr][ic]);
- fClusters[idx] = c;
- dyc[idx] = yres[jr][ic];
- n++;
+ for(Int_t ic(0); ic<nselected; ic++){
+ if(!(c = (AliTRDcluster*)selected->At(ic))) continue;
+ Int_t it(c->GetPadTime()),
+ jr(Int_t(helper.GetRow() != c->GetPadRow())),
+ idx(it+kNtb*jr);
+ if(fClusters[idx]){
+ AliDebug(1, Form("Multiple clusters/tb for D[%03d] Tb[%02d] Row[%2d]", fDet, it, c->GetPadRow()));
+ continue; // already booked
}
+ // TODO proper indexing of clusters !!
+ fIndexes[idx] = chamber->GetTB(it)->GetGlobalIndex(idxs[idxRow[jr]][ic]);
+ fClusters[idx] = c;
+ nc++;
}
- SetN(n);
+ AliDebug(2, Form("Clusters Found[%2d] Attached[%2d] RC[%c]", nselected, nc, IsRowCross()?'y':'n'));
// number of minimum numbers of clusters expected for the tracklet
- if (GetN() < kClmin){
- AliDebug(1, Form("NOT ENOUGH CLUSTERS %d ATTACHED TO THE TRACKLET [min %d] FROM FOUND %d.", GetN(), kClmin, n));
+ if (nc < kClmin){
+ AliDebug(1, Form("NOT ENOUGH CLUSTERS %d ATTACHED TO THE TRACKLET [min %d] FROM FOUND %d.", nc, kClmin, ncls));
SetErrorMsg(kAttachClAttach);
return kFALSE;
}
+ SetN(nc);
// Load calibration parameters for this tracklet
- Calibrate();
+ //Calibrate();
// calculate dx for time bins in the drift region (calibration aware)
Float_t x[2] = {0.,0.}; Int_t tb[2]={0,0};
const Char_t *tcName[]={"NONE", "FULL", "HALF"};
AliDebug(2, Form("Options : TC[%s] dzdx[%c]", tcName[opt], kDZDX?'Y':'N'));
+
for (Int_t ic=0; ic<kNclusters; ic++, ++jc) {
xc[ic] = -1.; yc[ic] = 999.; zc[ic] = 999.; sy[ic] = 0.;
if(!(c = (*jc))) continue;
kDZDX=kFALSE;
}
- Float_t w = 1.;
- if(c->GetNPads()>4) w = .5;
- if(c->GetNPads()>5) w = .2;
+// TODO use this information to adjust cluster error parameterization
+// Float_t w = 1.;
+// if(c->GetNPads()>4) w = .5;
+// if(c->GetNPads()>5) w = .2;
// cluster charge
qc[n] = TMath::Abs(c->GetQ());
}
-/*
-//_____________________________________________________________________________
-void AliTRDseedV1::FitMI()
+//____________________________________________________________________
+Bool_t AliTRDseedV1::FitRobust(AliTRDpadPlane *pp, Bool_t sgn, Int_t chg, Int_t opt)
{
//
-// Fit the seed.
-// Marian Ivanov's version
+// Linear fit of the clusters attached to the tracklet
+// The fit is performed in local chamber coordinates (27.11.2013) to take into account correctly the misalignment
+// Also the pad row cross is checked here and some background is removed
//
-// linear fit on the y direction with respect to the reference direction.
-// The residuals for each x (x = xc - x0) are deduced from:
-// dy = y - yt (1)
-// the tilting correction is written :
-// y = yc + h*(zc-zt) (2)
-// yt = y0+dy/dx*x (3)
-// zt = z0+dz/dx*x (4)
-// from (1),(2),(3) and (4)
-// dy = yc - y0 - (dy/dx + h*dz/dx)*x + h*(zc-z0)
-// the last term introduces the correction on y direction due to tilting pads. There are 2 ways to account for this:
-// 1. use tilting correction for calculating the y
-// 2. neglect tilting correction here and account for it in the error parametrization of the tracklet.
- const Float_t kRatio = 0.8;
- const Int_t kClmin = 5;
- const Float_t kmaxtan = 2;
-
- if (TMath::Abs(fYref[1]) > kmaxtan){
- //printf("Exit: Abs(fYref[1]) = %3.3f, kmaxtan = %3.3f\n", TMath::Abs(fYref[1]), kmaxtan);
- return; // Track inclined too much
- }
-
- Float_t sigmaexp = 0.05 + TMath::Abs(fYref[1] * 0.25); // Expected r.m.s in y direction
- Float_t ycrosscor = GetPadLength() * GetTilt() * 0.5; // Y correction for crossing
- Int_t fNChange = 0;
-
- Double_t sumw;
- Double_t sumwx;
- Double_t sumwx2;
- Double_t sumwy;
- Double_t sumwxy;
- Double_t sumwz;
- Double_t sumwxz;
-
- // Buffering: Leave it constant fot Performance issues
- Int_t zints[kNtb]; // Histograming of the z coordinate
- // Get 1 and second max probable coodinates in z
- Int_t zouts[2*kNtb];
- Float_t allowedz[kNtb]; // Allowed z for given time bin
- Float_t yres[kNtb]; // Residuals from reference
- //Float_t anglecor = GetTilt() * fZref[1]; // Correction to the angle
-
- Float_t pos[3*kNtb]; memset(pos, 0, 3*kNtb*sizeof(Float_t));
- Float_t *fX = &pos[0], *fY = &pos[kNtb], *fZ = &pos[2*kNtb];
+// Author
+// A.Bercuci <A.Bercuci@gsi.de>
+
+ TTreeSRedirector *pstreamer(NULL);
+ const AliTRDrecoParam* const recoParam = fkReconstructor->GetRecoParam();
+ if( (recoParam->GetStreamLevel(AliTRDrecoParam::kTracker) > 3 && fkReconstructor->IsDebugStreaming()) ||
+ AliTRDReconstructor::GetStreamLevel()>3 ) pstreamer = fkReconstructor->GetDebugStream(AliTRDrecoParam::kTracker);
+
+ // factor to scale y pulls.
+ // ideally if error parametrization correct this is 1.
+ //Float_t lyScaler = 1./(AliTRDgeometry::GetLayer(fDet)+1.);
+ Float_t kScalePulls = 1.;
+ AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
+ if(!calibration){
+ AliWarning("No access to calibration data");
+ } else {
+ // Retrieve the CDB container class with the parametric likelihood
+ const AliTRDCalTrkAttach *attach = calibration->GetAttachObject();
+ if(!attach){
+ AliWarning("No usable AttachClusters calib object.");
+ } else {
+ //kScalePulls = attach->GetScaleCov();//*lyScaler;
+ }
+ // Retrieve chamber status
+ SetChmbGood(calibration->IsChamberGood(fDet));
+ if(!IsChmbGood()) kScalePulls*=10.;
+ }
+ AliTRDCommonParam *cp = AliTRDCommonParam::Instance();
+ Double_t freq(cp?cp->GetSamplingFrequency():10.);
+
+ // evaluate locally z and dzdx from TRD only information
+ if(EstimatedCrossPoint(pp)<0.) return kFALSE;
- Int_t fN = 0; AliTRDcluster *c = 0x0;
- fN2 = 0;
- for (Int_t i = 0; i < AliTRDtrackerV1::GetNTimeBins(); i++) {
- yres[i] = 10000.0;
- if (!(c = fClusters[i])) continue;
+ //printf("D%03d RC[%c] dzdx[%f %f] opt[%d]\n", fDet, IsRowCross()?'y':'n', fZref[1], fZfit[1], opt);
+ Double_t //xchmb = 0.5 * AliTRDgeometry::AmThick() + AliTRDgeometry::DrThick(),
+ //zchmb = 0.5 * (pp->GetRow0() + pp->GetRowEnd()),
+ z0(0.5 * (pp->GetRow0() + pp->GetRowEnd()) + fZfit[0]),
+ DZ(pp->GetRow0() - pp->GetRowEnd() - pp->GetAnodeWireOffset() + fZfit[0]),
+ z, d(-1.);
+ Double_t xc[kNclusters], yc[kNclusters], dz(0.), dzdx(0.),
+ s2dz(0.), s2dzdx(0.), sy[kNclusters],
+ s2x((8.33e-2/freq/freq+1.56e-2)*fVD*fVD), // error of 1tb + error of mean time (TRF)
+ t2(fPad[2]*fPad[2]),
+ cs(0.);
+ Int_t n(0), // clusters used in fit
+ row[]={-1, -1},// pad row spanned by the tracklet
+ col(-1); // pad column of current cluster
+ Double_t ycorr(UnbiasY(IsRowCross(), sgn, chg)),
+ kS2Ycorr(recoParam->GetS2Ycorr(sgn));
+
+ AliTRDcluster *c(NULL), **jc = &fClusters[0];
+ for(Int_t ic=0; ic<kNtb; ic++, ++jc) {
+ if(!(c = (*jc))) continue;
if(!c->IsInChamber()) continue;
- // Residual y
- //yres[i] = fY[i] - fYref[0] - (fYref[1] + anglecor) * fX[i] + GetTilt()*(fZ[i] - fZref[0]);
- fX[i] = fX0 - c->GetX();
- fY[i] = c->GetY();
- fZ[i] = c->GetZ();
- yres[i] = fY[i] - GetTilt()*(fZ[i] - (fZref[0] - fX[i]*fZref[1]));
- zints[fN] = Int_t(fZ[i]);
- fN++;
- }
-
- if (fN < kClmin){
- //printf("Exit fN < kClmin: fN = %d\n", fN);
- return;
- }
- Int_t nz = AliTRDtrackerV1::Freq(fN, zints, zouts, kFALSE);
- Float_t fZProb = zouts[0];
- if (nz <= 1) zouts[3] = 0;
- if (zouts[1] + zouts[3] < kClmin) {
- //printf("Exit zouts[1] = %d, zouts[3] = %d\n",zouts[1],zouts[3]);
- return;
- }
-
- // Z distance bigger than pad - length
- if (TMath::Abs(zouts[0]-zouts[2]) > 12.0) zouts[3] = 0;
-
- Int_t breaktime = -1;
- Bool_t mbefore = kFALSE;
- Int_t cumul[kNtb][2];
- Int_t counts[2] = { 0, 0 };
-
- if (zouts[3] >= 3) {
-
- //
- // Find the break time allowing one chage on pad-rows
- // with maximal number of accepted clusters
- //
- fNChange = 1;
- for (Int_t i = 0; i < AliTRDtrackerV1::GetNTimeBins(); i++) {
- cumul[i][0] = counts[0];
- cumul[i][1] = counts[1];
- if (TMath::Abs(fZ[i]-zouts[0]) < 2) counts[0]++;
- if (TMath::Abs(fZ[i]-zouts[2]) < 2) counts[1]++;
+ if(row[0]<0){
+ row[0] = c->GetPadRow();
+ z = pp->GetRowPos(row[0]) - 0.5*pp->GetRowSize(row[0]);
+ switch(opt){
+ case 0: // no dz correction (only for RC tracklet) and dzdx from chamber position assuming primary
+ dzdx = IsRowCross()?fZfit[1]:0.;
+ s2dzdx= IsRowCross()?GetS2DZDX(dzdx):0.;
+ dz = IsRowCross()?(z - z0):0.;
+ s2dz = IsRowCross()?fS2Z:0.;
+ break;
+ case 1: // dz correction only for RC tracklet and dzdx from reference
+ dzdx = fZref[1];
+ dz = IsRowCross()?(z - z0):0.;
+ break;
+ case 2: // full z correction (z0 & dzdx from reference)
+ dzdx = fZref[1];
+ dz = c->GetZ()-fZref[0];
+ break;
+ default:
+ AliError(Form("Wrong option fit %d !", opt));
+ break;
+ }
}
- Int_t maxcount = 0;
- for (Int_t i = 0; i < AliTRDtrackerV1::GetNTimeBins(); i++) {
- Int_t after = cumul[AliTRDtrackerV1::GetNTimeBins()][0] - cumul[i][0];
- Int_t before = cumul[i][1];
- if (after + before > maxcount) {
- maxcount = after + before;
- breaktime = i;
- mbefore = kFALSE;
- }
- after = cumul[AliTRDtrackerV1::GetNTimeBins()-1][1] - cumul[i][1];
- before = cumul[i][0];
- if (after + before > maxcount) {
- maxcount = after + before;
- breaktime = i;
- mbefore = kTRUE;
- }
+ if(col != c->GetPadCol()){
+ col = c->GetPadCol();
+ cs = pp->GetColSize(col);
}
- breaktime -= 1;
- }
-
- for (Int_t i = 0; i < AliTRDtrackerV1::GetNTimeBins()+1; i++) {
- if (i > breaktime) allowedz[i] = mbefore ? zouts[2] : zouts[0];
- if (i <= breaktime) allowedz[i] = (!mbefore) ? zouts[2] : zouts[0];
- }
-
- if (((allowedz[0] > allowedz[AliTRDtrackerV1::GetNTimeBins()]) && (fZref[1] < 0)) ||
- ((allowedz[0] < allowedz[AliTRDtrackerV1::GetNTimeBins()]) && (fZref[1] > 0))) {
- //
- // Tracklet z-direction not in correspondance with track z direction
- //
- fNChange = 0;
- for (Int_t i = 0; i < AliTRDtrackerV1::GetNTimeBins()+1; i++) {
- allowedz[i] = zouts[0]; // Only longest taken
- }
- }
-
- if (fNChange > 0) {
- //
- // Cross pad -row tracklet - take the step change into account
- //
- for (Int_t i = 0; i < AliTRDtrackerV1::GetNTimeBins()+1; i++) {
- if (!fClusters[i]) continue;
- if(!fClusters[i]->IsInChamber()) continue;
- if (TMath::Abs(fZ[i] - allowedz[i]) > 2) continue;
- // Residual y
- //yres[i] = fY[i] - fYref[0] - (fYref[1] + anglecor) * fX[i] + GetTilt()*(fZ[i] - fZref[0]);
- yres[i] = fY[i] - GetTilt()*(fZ[i] - (fZref[0] - fX[i]*fZref[1]));
-// if (TMath::Abs(fZ[i] - fZProb) > 2) {
-// if (fZ[i] > fZProb) yres[i] += GetTilt() * GetPadLength();
-// if (fZ[i] < fZProb) yres[i] -= GetTilt() * GetPadLength();
- }
+ //Use local cluster coordinates - the code should be identical with AliTRDtransform::Transform() !!!
+ //A.Bercuci 27.11.13
+ xc[n] = c->GetXloc(fT0, fVD); // c->GetX();
+ yc[n] = c->GetYloc(pp->GetColPos(col) + .5*cs, fS2PRF, cs) - xc[n]*fExB; //c->GetY();
+ yc[n]-= fPad[2]*(dz+xc[n]*dzdx);
+ yc[n]-= ycorr;
+ if(IsRowCross()){ // estimate closest distance to anode wire
+ d = DZ-xc[n]*dzdx;
+ d -= ((Int_t)(2 * d)) / 2.0;
+ if (d > 0.25) d = 0.5 - d;
}
+ // recalculate cluster error from knowledge of the track inclination in the bending plane
+ // and eventually distance to anode wire
+ c->SetSigmaY2(fS2PRF, fDiffT, fExB, xc[n], d, fYref[1]);
+ s2x = c->GetSX(c->GetLocalTimeBin(), d); s2x*=s2x;
+ sy[n] = c->GetSigmaY2()>0?(TMath::Min(Double_t(c->GetSigmaY2()), 6.4e-3)):6.4e-3;
+ sy[n]+= t2*(s2dz+xc[n]*xc[n]*s2dzdx+dzdx*dzdx*s2x);
+ sy[n] = TMath::Sqrt(sy[n]);
+ n++;
}
-
- Double_t yres2[kNtb];
- Double_t mean;
- Double_t sigma;
- for (Int_t i = 0; i < AliTRDtrackerV1::GetNTimeBins()+1; i++) {
- if (!fClusters[i]) continue;
- if(!fClusters[i]->IsInChamber()) continue;
- if (TMath::Abs(fZ[i] - allowedz[i]) > 2) continue;
- yres2[fN2] = yres[i];
- fN2++;
- }
- if (fN2 < kClmin) {
- //printf("Exit fN2 < kClmin: fN2 = %d\n", fN2);
- fN2 = 0;
- return;
+ for(Int_t ic=kNtb; ic<kNclusters; ic++, ++jc) {
+ if(!(c = (*jc))) continue;
+ if(!c->IsInChamber()) continue;
+ if(row[1]<0){
+ row[1] = c->GetPadRow();
+ z = pp->GetRowPos(row[1]) - 0.5*pp->GetRowSize(row[1]);
+ switch(opt){
+ case 0: // no dz correction (only for RC tracklet) and dzdx from chamber position assuming primary
+ //dzdx = fZfit[1];
+ dz = z - z0;
+ break;
+ case 1: // dz correction only for RC tracklet and dzdx from reference
+ //dzdx = fZref[1];
+ dz = z - z0;
+ break;
+ case 2: // full z correction (z0 & dzdx from reference)
+ //dzdx = fZref[1];
+ dz = c->GetZ()-fZref[0];
+ break;
+ default:
+ AliError(Form("Wrong option fit %d !", opt));
+ break;
+ }
+ }
+ if(col != c->GetPadCol()){
+ col = c->GetPadCol();
+ cs = pp->GetColSize(col);
+ }
+ //Use local cluster coordinates - the code should be identical with AliTRDtransform::Transform() !!!
+ //A.Bercuci 27.11.13
+ xc[n] = c->GetXloc(fT0, fVD); // c->GetX();
+ yc[n] = c->GetYloc(pp->GetColPos(col) + .5*cs, fS2PRF, cs) - xc[n]*fExB ;
+ yc[n]-= fPad[2]*(dz+xc[n]*dzdx);
+ yc[n]-= ycorr;
+
+ d = DZ-xc[n]*dzdx;
+ d -= ((Int_t)(2 * d)) / 2.0;
+ if (d > 0.25) d = 0.5 - d;
+ c->SetSigmaY2(fS2PRF, fDiffT, fExB, xc[n], d, fYref[1]);
+ s2x = c->GetSX(c->GetLocalTimeBin(), d); s2x*=s2x;
+ sy[n] = c->GetSigmaY2()>0?(TMath::Min(Double_t(c->GetSigmaY2()), 6.4e-3)):6.4e-3;
+ sy[n]+= t2*(s2dz+xc[n]*xc[n]*s2dzdx+dzdx*dzdx*s2x);
+ sy[n] = TMath::Sqrt(sy[n]);
+ n++;
}
- AliMathBase::EvaluateUni(fN2,yres2,mean,sigma, Int_t(fN2*kRatio-2.));
- if (sigma < sigmaexp * 0.8) {
- sigma = sigmaexp;
- }
- //Float_t fSigmaY = sigma;
-
- // Reset sums
- sumw = 0;
- sumwx = 0;
- sumwx2 = 0;
- sumwy = 0;
- sumwxy = 0;
- sumwz = 0;
- sumwxz = 0;
-
- fN2 = 0;
- Float_t fMeanz = 0;
- Float_t fMPads = 0;
- fUsable = 0;
- for (Int_t i = 0; i < AliTRDtrackerV1::GetNTimeBins()+1; i++) {
- if (!fClusters[i]) continue;
- if (!fClusters[i]->IsInChamber()) continue;
- if (TMath::Abs(fZ[i] - allowedz[i]) > 2){fClusters[i] = 0x0; continue;}
- if (TMath::Abs(yres[i] - mean) > 4.0 * sigma){fClusters[i] = 0x0; continue;}
- SETBIT(fUsable,i);
- fN2++;
- fMPads += fClusters[i]->GetNPads();
- Float_t weight = 1.0;
- if (fClusters[i]->GetNPads() > 4) weight = 0.5;
- if (fClusters[i]->GetNPads() > 5) weight = 0.2;
-
-
- Double_t x = fX[i];
- //printf("x = %7.3f dy = %7.3f fit %7.3f\n", x, yres[i], fY[i]-yres[i]);
-
- sumw += weight;
- sumwx += x * weight;
- sumwx2 += x*x * weight;
- sumwy += weight * yres[i];
- sumwxy += weight * (yres[i]) * x;
- sumwz += weight * fZ[i];
- sumwxz += weight * fZ[i] * x;
+ UChar_t status(0);
+ // the ref radial position is set close to the minimum of
+ // the y variance of the tracklet
+ fX = 0.;//set reference to anode wire
+ Double_t par[3] = {0.,0.,fX}, cov[3];
+ if(!AliTRDtrackletOflHelper::Fit(n, xc, yc, sy, par, 1.5, cov)){
+ AliDebug(1, Form("Tracklet fit failed D[%03d].", fDet));
+ SetErrorMsg(kFitCl);
+ return kFALSE;
}
-
- if (fN2 < kClmin){
- //printf("Exit fN2 < kClmin(2): fN2 = %d\n",fN2);
- fN2 = 0;
- return;
+ fYfit[0] = par[0] - fX * par[1];
+ fYfit[1] = -par[1];
+ //printf(" yfit: %f [%f] x[%e] dydx[%f]\n", fYfit[0], par[0], fX, par[1]);
+ // store covariance
+ fCov[0] = kS2Ycorr*cov[0]; // variance of y0
+ fCov[1] = kScalePulls*cov[2]; // covariance of y0, dydx
+ fCov[2] = kScalePulls*cov[1]; // variance of dydx
+ // check radial position
+ Float_t xs=fX+.5*AliTRDgeometry::CamHght();
+ if(xs < 0. || xs > AliTRDgeometry::CamHght()+AliTRDgeometry::CdrHght()){
+ AliDebug(1, Form("Ref radial position x[%5.2f] ouside D[%3d].", fX, fDet));
+ SetErrorMsg(kFitFailedY);
+ return kFALSE;
}
- fMeanz = sumwz / sumw;
- Float_t correction = 0;
- if (fNChange > 0) {
- // Tracklet on boundary
- if (fMeanz < fZProb) correction = ycrosscor;
- if (fMeanz > fZProb) correction = -ycrosscor;
+ if(!IsRowCross()){
+ Double_t padEffLength(fPad[0] - TMath::Abs(dzdx));
+ fS2Z = padEffLength*padEffLength/12.;
}
-
- Double_t det = sumw * sumwx2 - sumwx * sumwx;
- fYfit[0] = (sumwx2 * sumwy - sumwx * sumwxy) / det;
- fYfit[1] = (sumw * sumwxy - sumwx * sumwy) / det;
+ AliDebug(2, Form("[I] x[cm]=%6.2f y[cm]=%+5.2f z[cm]=%+6.2f dydx[deg]=%+5.2f", GetX(), GetY(), GetZ(), TMath::ATan(fYfit[1])*TMath::RadToDeg()));
- fS2Y = 0;
- for (Int_t i = 0; i < AliTRDtrackerV1::GetNTimeBins()+1; i++) {
- if (!TESTBIT(fUsable,i)) continue;
- Float_t delta = yres[i] - fYfit[0] - fYfit[1] * fX[i];
- fS2Y += delta*delta;
- }
- fS2Y = TMath::Sqrt(fS2Y / Float_t(fN2-2));
- // TEMPORARY UNTIL covariance properly calculated
- fS2Y = TMath::Max(fS2Y, Float_t(.1));
-
- fZfit[0] = (sumwx2 * sumwz - sumwx * sumwxz) / det;
- fZfit[1] = (sumw * sumwxz - sumwx * sumwz) / det;
-// fYfitR[0] += fYref[0] + correction;
-// fYfitR[1] += fYref[1];
-// fYfit[0] = fYfitR[0];
- fYfit[1] = -fYfit[1];
+ if(pstreamer){
+ Float_t x= fX0 -fX,
+ y = GetY(),
+ yt = fYref[0]-fX*fYref[1];
+ SETBIT(status, 2);
+ TVectorD vcov(3); vcov[0]=cov[0];vcov[1]=cov[1];vcov[2]=cov[2];
+ Double_t sm(0.), chi2(0.), tmp, dy[kNclusters];
+ for(Int_t ic(0); ic<n; ic++){
+ sm += sy[ic];
+ dy[ic] = yc[ic]-(fYfit[0]+(xc[ic]-fX0)*fYfit[1]); tmp = dy[ic]/sy[ic];
+ chi2 += tmp*tmp;
+ }
+ sm /= n; chi2 = TMath::Sqrt(chi2);
+ Double_t m(0.), s(0.);
+ AliMathBase::EvaluateUni(n, dy, m, s, 0);
+ (*pstreamer) << "FitRobust4"
+ << "stat=" << status
+ << "opt=" << opt
+ << "ncl=" << n
+ << "det=" << fDet
+ << "x0=" << fX0
+ << "y0=" << fYfit[0]
+ << "x=" << x
+ << "y=" << y
+ << "dydx=" << fYfit[1]
+ << "pt=" << fPt
+ << "yt=" << yt
+ << "dydxt="<< fYref[1]
+ << "cov=" << &vcov
+ << "chi2=" << chi2
+ << "sm=" << sm
+ << "ss=" << s
+ << "\n";
+ }
+ return kTRUE;
+}
+
+//___________________________________________________________________
+void AliTRDseedV1::SetXYZ(TGeoHMatrix *mDet)
+{
+// Apply alignment to the local position of tracklet
+// A.Bercuci @ 27.11.2013
+
+ Double_t loc[] = {AliTRDgeometry::AnodePos(), GetLocalY(), fZfit[0]}, trk[3]={0.};
+ mDet->LocalToMaster(loc, trk);
+ fX0 = trk[0];
+ fY = trk[1];
+ fZ = trk[2];
+ return;
+// if(!IsRowCross()){/*fZfit[1] *= 1.09;*/ return;}
+// // recalculate local z coordinate assuming primary track for row cross tracklets
+// Double_t zoff(fZ-fZfit[0]); // no alignment aware !
+// //printf("SetXYZ : zoff[%f] zpp[%f]\n", zoff, zpp);
+// fZfit[0] = fX0*fZfit[1] - zoff;
+// // recalculate tracking coordinates based on the new z coordinate
+// loc[2] = fZfit[0];
+// mDet->LocalToMaster(loc, trk);
+// fX0 = trk[0];
+// fY = trk[1];
+// fZ = trk[2];//-zcorr[stk];
+ //fZfit[1] = /*(IsRowCross()?1.05:1.09)**/fZ/(fX0-fS2Y);
+}
- UpdateUsed();
-}*/
//___________________________________________________________________
void AliTRDseedV1::Print(Option_t *o) const
GetCovAt(x, cov);
AliInfo(" | x[cm] | y[cm] | z[cm] | dydx | dzdx |");
AliInfo(Form("Fit | %7.2f | %7.2f+-%7.2f | %7.2f+-%7.2f| %5.2f | ----- |", x, GetY(), TMath::Sqrt(cov[0]), GetZ(), TMath::Sqrt(cov[2]), fYfit[1]));
- AliInfo(Form("Ref | %7.2f | %7.2f+-%7.2f | %7.2f+-%7.2f| %5.2f | %5.2f |", x, fYref[0]-fX*fYref[1], TMath::Sqrt(fRefCov[0]), fZref[0]-fX*fYref[1], TMath::Sqrt(fRefCov[2]), fYref[1], fZref[1]))
+ AliInfo(Form("Ref | %7.2f | %7.2f+-%7.2f | %7.2f+-%7.2f| %5.2f | %5.2f |", x, fYref[0]-fX*fYref[1], TMath::Sqrt(fRefCov[0]), fZref[0]-fX*fYref[1], TMath::Sqrt(fRefCov[2]), fYref[1], fZref[1]));
AliInfo(Form("P / Pt [GeV/c] = %f / %f", GetMomentum(), fPt));
if(IsStandAlone()) AliInfo(Form("C Rieman / Vertex [1/cm] = %f / %f", fC[0], fC[1]));
AliInfo(Form("dEdx [a.u.] = %f / %f / %f / %f / %f/ %f / %f / %f", fdEdx[0], fdEdx[1], fdEdx[2], fdEdx[3], fdEdx[4], fdEdx[5], fdEdx[6], fdEdx[7]));
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff