+
/**************************************************************************
* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
* *
#include "AliTRDcluster.h"
#include "AliTRDcalibDB.h"
#include "AliTRDReconstructor.h"
+#include "AliTRDPIDResponse.h"
#include "AliTRDrecoParam.h"
ClassImp(AliTRDtrackV1)
//
if (this != &t) {
+ AliKalmanTrack::operator=(t);
((AliTRDtrackV1 &) t).Copy(*this);
}
//<img src="TRD/trackPID.gif">
//End_Html
//
-
- /*Reset the a priori probabilities*/
- Double_t pid = 1. / AliPID::kSPECIES;
- for(int ispec=0; ispec<AliPID::kSPECIES; ispec++) fPID[ispec] = pid;
-
- UChar_t fPIDquality = SetNumberOfTrackletsPID(kTRUE);
- // no tracklet found for PID calculations
- if(!fPIDquality) return kFALSE;
-
- // slot for PID calculation @ track level for bremsstrahlung TODO
-
- // normalize probabilities
- Double_t probTotal = 0.0;
- for (Int_t is = 0; is < AliPID::kSPECIES; is++) probTotal += fPID[is];
-
-
- if (probTotal <= 0.0) {
- AliWarning("The total probability over all species <= 0. This may be caused by some error in the reference data.");
+ const AliTRDPIDResponse *pidResponse = AliTRDcalibDB::Instance()->GetPIDResponse(fkReconstructor->GetRecoParam()->GetPIDmethod());
+ if(!pidResponse){
+ AliError("PID Response not available");
return kFALSE;
}
-
- for (Int_t iSpecies = 0; iSpecies < AliPID::kSPECIES; iSpecies++) fPID[iSpecies] /= probTotal;
-
+ 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;
}
// Retrieve number of tracklets used for PID calculation.
UChar_t nPID = 0;
- Float_t *prob = NULL;
for(int ip=0; ip<kNplane; ip++){
if(fTrackletIndex[ip]<0 || !fTracklet[ip]) continue;
if(!fTracklet[ip]->IsOK()) continue;
- if(!(prob = fTracklet[ip]->GetProbability(kFALSE))) continue;
-
- Int_t nspec = 0; // quality check of tracklet dEdx
- for(int ispec=0; ispec<AliPID::kSPECIES; ispec++){
- if(prob[ispec] < 0.) continue;
- nspec++;
- }
- if(!nspec) continue;
- fTracklet[ip]->SetPID();
nPID++;
}
return nPID;
}
-//___________________________________________________________
-UChar_t AliTRDtrackV1::SetNumberOfTrackletsPID(Bool_t recalc)
-{
-// Retrieve number of tracklets used for PID calculation. // Recalculated PID at tracklet level by quering the PID DB.
-
- UChar_t fPIDquality(0);
-
- // steer PID calculation @ tracklet level
- Float_t *prob(NULL);
- for(int ip=0; ip<kNplane; ip++){
- if(fTrackletIndex[ip]<0 || !fTracklet[ip]) continue;
- if(!fTracklet[ip]->IsOK()) continue;
- if(!(prob = fTracklet[ip]->GetProbability(recalc))) return 0;
-
- Int_t nspec = 0; // quality check of tracklet dEdx
- for(int ispec=0; ispec<AliPID::kSPECIES; ispec++){
- if(prob[ispec] < 0.) continue;
- fPID[ispec] *= prob[ispec];
- nspec++;
- }
- if(!nspec) continue;
-
- fPIDquality++;
- }
- return fPIDquality;
-}
-
//_______________________________________________________________
AliTRDcluster* AliTRDtrackV1::GetCluster(Int_t id)
{
for(Int_t il(AliTRDgeometry::kNlayer); il--;){
if(!fTracklet[il]) continue;
n++;
- occupancy+=fTracklet[il]->GetOccupancyTB();
+ occupancy+=fTracklet[il]->GetTBoccupancy()/AliTRDseedV1::kNtb;
ncls += fTracklet[il]->GetN();
}
if(!n) return -1;
// "xrho" - thickness*density [g/cm^2]
//
- if (TMath::Abs(xk - GetX())<1.e-2) return kTRUE; // 100mum limit
+ if (TMath::Abs(xk - GetX())<AliTRDReconstructor::GetEpsilon()*0.1) return kTRUE; // 10% of the tracker precision
Double_t xyz0[3] = {GetX(), GetY(), GetZ()}, // track position BEFORE propagation
b[3]; // magnetic field
// local track position AFTER propagation
Double_t xyz1[3] = {GetX(), GetY(), GetZ()};
+// printf("x0[%6.2f] -> 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()) {
AddTimeStep(l2);
}
}
-
if (!AliExternalTrackParam::CorrectForMeanMaterial(xx0, xrho, GetMass())) return kFALSE;
// Update the TRD PID information in the ESD track
//
- Int_t nslices = fkReconstructor->GetRecoParam()->IsEightSlices() ? (Int_t)AliTRDpidUtil::kNNslices : (Int_t)AliTRDpidUtil::kLQslices;
+// 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
// pack the two numbers together and store them in the ESD
track->SetTRDntracklets(nPID | (nTrk<<3));
// allocate space to store raw PID signals dEdx & momentum
- track->SetNumberOfTRDslices((nslices+2)*AliTRDgeometry::kNlayer);
+ 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]<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 < nslices; js++, dedx++) track->SetTRDslice(*dedx, ip, js);
- p = fTracklet[ip]->GetMomentum(&sp); spd = sp;
+ for (Int_t js = 0; js < AliTRDPIDResponse::kNslicesNN; js++, dedx++){
+ track->SetTRDslice(*dedx, ip, js+1);
+ }
+ p = fTracklet[ip]->GetMomentum(&sp);
+ // 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
+ Int_t nCross(fTracklet[ip]->IsRowCross()?fTracklet[ip]->GetTBcross():0);
+ spd = Double_t(fTracklet[ip]->GetTBoccupancy() | (nCross<<5) | (fTracklet[ip]->IsChmbGood()<<9));
track->SetTRDmomentum(p, ip, &spd);
+ track->SetTRDslice(fTracklet[ip]->GetdQdl(), ip, 0); // Set Summed dEdx into the first slice
}
// store PID probabilities
track->SetTRDpid(fPID);
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff