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ALICE3-TRK: fix y-axis orientation in the sensor local coordinate system, keeping the geometry unchanged #15134

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ALICE3-TRK: fix y-axis orientation in the sensor local coordinate system, keeping the geometry unchanged #15134

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10 changes: 5 additions & 5 deletions Detectors/Upgrades/ALICE3/TRK/simulation/src/TRKLayer.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -137,17 +137,17 @@ TGeoVolume* TRKLayer::createChip(std::string type)
metalVol = createMetalStack("flat");

TGeoCombiTrans* transSens = new TGeoCombiTrans();
transSens->SetTranslation(-mDeadzoneWidth / 2, -(mChipThickness - mSensorThickness) / 2, 0); // TO BE CHECKED !!!
transSens->SetTranslation(-mDeadzoneWidth / 2, (mChipThickness - mSensorThickness) / 2, 0); // TO BE CHECKED !!!
LOGP(debug, "Inserting {} in {} ", sensVol->GetName(), chipVol->GetName());
chipVol->AddNode(sensVol, 1, transSens);

TGeoCombiTrans* transDead = new TGeoCombiTrans();
transDead->SetTranslation((mChipWidth - mDeadzoneWidth) / 2, -(mChipThickness - mSensorThickness) / 2, 0); // TO BE CHECKED !!!
transDead->SetTranslation((mChipWidth - mDeadzoneWidth) / 2, (mChipThickness - mSensorThickness) / 2, 0); // TO BE CHECKED !!!
LOGP(debug, "Inserting {} in {} ", deadVol->GetName(), chipVol->GetName());
chipVol->AddNode(deadVol, 1, transDead);

TGeoCombiTrans* transMetal = new TGeoCombiTrans();
transMetal->SetTranslation(0, mSensorThickness / 2, 0); // TO BE CHECKED !!!
transMetal->SetTranslation(0, -(mSensorThickness) / 2, 0); // TO BE CHECKED !!!
LOGP(debug, "Inserting {} in {} ", metalVol->GetName(), chipVol->GetName());
chipVol->AddNode(metalVol, 1, transMetal);
} else {
Expand Down Expand Up @@ -374,7 +374,7 @@ void TRKLayer::createLayer(TGeoVolume* motherVolume)
// Put the staves in the correct position and orientation
TGeoCombiTrans* trans = new TGeoCombiTrans();
double theta = 360. * iStave / nStaves;
TGeoRotation* rot = new TGeoRotation("rot", theta - 90 + 4, 0, 0);
TGeoRotation* rot = new TGeoRotation("rot", theta + 90 + 4, 0, 0);
trans->SetRotation(rot);
trans->SetTranslation(mInnerRadius * std::cos(2. * TMath::Pi() * iStave / nStaves), mInnerRadius * std::sin(2 * TMath::Pi() * iStave / nStaves), 0);

Expand Down Expand Up @@ -408,7 +408,7 @@ void TRKLayer::createLayer(TGeoVolume* motherVolume)
// Put the staves in the correct position and orientation
TGeoCombiTrans* trans = new TGeoCombiTrans();
double theta = 360. * iStave / nStaves;
TGeoRotation* rot = new TGeoRotation("rot", theta - 90, 0, 0);
TGeoRotation* rot = new TGeoRotation("rot", theta + 90, 0, 0);
trans->SetRotation(rot);
trans->SetTranslation(mInnerRadius * std::cos(2. * TMath::Pi() * iStave / nStaves), mInnerRadius * std::sin(2 * TMath::Pi() * iStave / nStaves), 0);

Expand Down