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ITS3: fix recently added service material #14751

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Merged
fgrosa merged 2 commits into from
Oct 23, 2025
Merged

ITS3: fix recently added service material #14751

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9617c62
ITS3: fix IB wrapping volume length
f3sch Oct 14, 2025
44c3b60
ITS3: fix service material
f3sch Oct 17, 2025
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2 changes: 1 addition & 1 deletion Detectors/Upgrades/ITS3/base/include/ITS3Base/SpecsV2.h
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Original file line number Diff line number Diff line change
Expand Up @@ -221,7 +221,7 @@ namespace services
constexpr double thickness{2.2 * mm}; // thickness of structure
constexpr double radiusInner{radiiOuter[2] + carbonfoam::thicknessOuterFoam}; // inner radius of services
constexpr double radiusOuter{radiusInner + thickness}; // outer radius of services
constexpr double length{20 * cm}; // length
constexpr double length{segment::length + (1 * cm)}; // length
constexpr EColor color{kBlue};
} // namespace services

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2 changes: 1 addition & 1 deletion Detectors/Upgrades/ITS3/simulation/include/ITS3Simulation/DescriptorInnerBarrelITS3.h
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Expand Up @@ -48,7 +48,7 @@ class DescriptorInnerBarrelITS3 : public o2::its::DescriptorInnerBarrel
static constexpr double mTolerance{1e-3};
static constexpr double mWrapperMinRadiusITS3{constants::radiiInner[0] - mTolerance};
static constexpr double mWrapperMaxRadiusITS3{constants::services::radiusOuter + mTolerance};
static constexpr double mWrapperZSpanITS3{constants::services::length + mTolerance};
static constexpr double mWrapperZSpanITS3{constants::services::length * 2 + mTolerance}; // z length is divided in half

private:
std::array<std::unique_ptr<ITS3Layer>, constants::nLayers> mIBLayers;
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9 changes: 6 additions & 3 deletions Detectors/Upgrades/ITS3/simulation/src/ITS3Services.cxx
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Expand Up @@ -30,13 +30,16 @@ void ITS3Services::createCYSSAssembly(TGeoVolume* motherVolume)
motherVolume->AddNode(cyssVol, 1., nullptr);

// Cylinder
auto cyssInnerCylSh = new TGeoTubeSeg(constants::services::radiusInner, constants::services::radiusOuter, constants::services::length, 180, 360);
auto medPrepreg = gGeoManager->GetMedium("IT3_AS4C200$");
auto cyssInnerCylShVol = new TGeoVolume("IBCYSSCylinder", cyssInnerCylSh, medPrepreg);
auto cyssInnerCylSh = new TGeoTubeSeg(constants::services::radiusInner, constants::services::radiusOuter, constants::services::length / 2, 180, 360);
auto medRohacell = gGeoManager->GetMedium("IT3_RIST110$");
auto cyssInnerCylShVol = new TGeoVolume("IBCYSSCylinder", cyssInnerCylSh, medRohacell);
cyssInnerCylShVol->SetLineColor(constants::services::color);
cyssVol->AddNode(cyssInnerCylShVol, 1, new TGeoTranslation(0, 0, 0));
cyssVol->AddNode(cyssInnerCylShVol, 2, new TGeoCombiTrans(0, 0, 0, new TGeoRotation("", 180, 0, 0)));

// TODO Cone
// For now the wrapping volume just extends beyond the cylinder if something is added beyond that this volume has to
// be exteneded.
}

} // namespace o2::its3