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[ALICE3] Fix some overlaps between services and supports #15793

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njacazio merged 1 commit into from
Sep 15, 2026
+3 −2
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[ALICE3] Fix some overlaps between services and supports #15793

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3 changes: 2 additions & 1 deletion Detectors/Upgrades/ALICE3/TRKFT3/FT3/simulation/src/FT3Layer.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -469,7 +469,8 @@ void FT3Layer::createLayer(TGeoVolume* motherVolume)
double z_local_offset = z_layer_thickness / 2.0;
// ensure staves fully encapsulated in the layer volume,
// but don't cross out of max nominal radii of 38.5cm & 71.5cm respectively (3.5cm tolerance)
TGeoTube* layer = new TGeoTube(mInnerRadius - 0.2, mOuterRadius + 3.49, z_layer_thickness / 2);
// MvL: try 70.5 // 2.5 cm tolerance instead
TGeoTube* layer = new TGeoTube(mInnerRadius - 0.2, mOuterRadius + 2.49, z_layer_thickness / 2);
layerVol = new TGeoVolume(mLayerName.c_str(), layer, medAir);

if (ft3Params.drawReferenceCircles) {
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2 changes: 1 addition & 1 deletion Detectors/Upgrades/ALICE3/TRKFT3/TRK/simulation/src/TRKServices.cxx
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Expand Up @@ -629,7 +629,7 @@ void TRKServices::createMLServicesPeacock(TGeoVolume* motherVolume)
motherVolume->AddNode(middleBarrelCarbonSupportVolume, 1, nullptr);

// Get geometry information from TRK which is already present
float rMinMiddleServices = 38.5f; // cm, start radius of the ML services = maximum radius allowed for sensors (35 cm), plus some margin for disk paving with modules
float rMinMiddleServices = 38.0f; // cm, start radius of the ML services = maximum radius allowed for sensors (35 cm), plus some margin for disk paving with modules
const float zMiddleServicesBarrel = 64.5f; // cm, z position of the first barrel ML service disk
const float zMiddleServicesBarrelFwdConnection = 143.f; // cm, z position of barrel to forward connection services
const float zLengthCylinderMiddleServicesBarrel = zMiddleServicesBarrelFwdConnection - zMiddleServicesBarrel;
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