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TPC MC: Move hit exlusion after Track Ref creation #13749

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merged 2 commits into from
Nov 29, 2024
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TPC MC: Move hit exlusion after Track Ref creation #13749

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6c087cc
TPC MC: Move hit exlusion after Track Ref creation
wiechula Nov 28, 2024
7f89a70
Add missing setting of variable
wiechula Nov 28, 2024
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37 changes: 19 additions & 18 deletions Detectors/TPC/simulation/src/Detector.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -142,6 +142,25 @@ Bool_t Detector::ProcessHits(FairVolume* vol)
// TODO: Temporary hack to process only one sector
// if (sectorID != 0) return kFALSE;

// ---| momentum and beta gamma |---
static TLorentzVector momentum; // static to make avoid creation/deletion of this expensive object
fMC->TrackMomentum(momentum);

const float time = fMC->TrackTime() * 1.0e9;
const int trackID = fMC->GetStack()->GetCurrentTrackNumber();
const int detID = vol->getMCid();
o2::data::Stack* stack = (o2::data::Stack*)fMC->GetStack();
if (fMC->IsTrackEntering() || fMC->IsTrackExiting()) {
stack->addTrackReference(o2::TrackReference(position.X(), position.Y(), position.Z(), momentum.X(), momentum.Y(),
momentum.Z(), fMC->TrackLength(), time, trackID, GetDetId()));
lastReferenceR = fMC->TrackLength();
}
if (TMath::Abs(lastReferenceR - fMC->TrackLength()) > kMaxDistRef) { /// we can speedup
stack->addTrackReference(o2::TrackReference(position.X(), position.Y(), position.Z(), momentum.X(), momentum.Y(),
momentum.Z(), fMC->TrackLength(), time, trackID, GetDetId()));
lastReferenceR = fMC->TrackLength();
}

// ---| remove clusters between the IFC and the FC strips |---
// those should not enter the active readout area
// do coarse selection before, to limit number of transformations
Expand All @@ -164,24 +183,6 @@ Bool_t Detector::ProcessHits(FairVolume* vol)
}
}

// ---| momentum and beta gamma |---
static TLorentzVector momentum; // static to make avoid creation/deletion of this expensive object
fMC->TrackMomentum(momentum);

const float time = fMC->TrackTime() * 1.0e9;
const int trackID = fMC->GetStack()->GetCurrentTrackNumber();
const int detID = vol->getMCid();
o2::data::Stack* stack = (o2::data::Stack*)fMC->GetStack();
if (fMC->IsTrackEntering() || fMC->IsTrackExiting()) {
stack->addTrackReference(o2::TrackReference(position.X(), position.Y(), position.Z(), momentum.X(), momentum.Y(),
momentum.Z(), fMC->TrackLength(), time, trackID, GetDetId()));
}
if (TMath::Abs(lastReferenceR - fMC->TrackLength()) > kMaxDistRef) { /// we can speedup
stack->addTrackReference(o2::TrackReference(position.X(), position.Y(), position.Z(), momentum.X(), momentum.Y(),
momentum.Z(), fMC->TrackLength(), time, trackID, GetDetId()));
lastReferenceR = fMC->TrackLength();
}

// ===| CONVERT THE ENERGY LOSS TO IONIZATION ELECTRONS |=====================
//
// The energy loss is implemented directly below and taken GEANT3,
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