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[ALICE 3] Implementation of peacock layour for services #15122

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Merged
njacazio merged 6 commits into from
Mar 11, 2026
Merged

[ALICE 3] Implementation of peacock layour for services #15122

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14a3ce4
[ALICE 3] Implementation of peacock layour for services
marcovanleeuwen Mar 4, 2026
9506ac1
Please consider the following formatting changes
alibuild Mar 5, 2026
0ae50be
Whitespace cleanup
marcovanleeuwen Mar 5, 2026
fc713b6
[ALICE 3] Fixes for code checker
marcovanleeuwen Mar 5, 2026
871f3e3
[ALICE 3] More fixes for code checker
marcovanleeuwen Mar 5, 2026
544c8ef
[ALICE 3] Fix one more overlap in the tracker services in the LoI geo…
marcovanleeuwen Mar 6, 2026
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1 change: 1 addition & 0 deletions Detectors/Upgrades/ALICE3/TRK/README.md
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Expand Up @@ -17,6 +17,7 @@ Configurables for various sub-detectors are presented in the following Table:
| `TRKBase.layoutVD` | `kIRIS4` (default), `kIRISFullCyl`, `kIRIS5`, `kIRIS4a` | [link to definitions](./base/include/TRKBase/TRKBaseParam.h) |
| `TRKBase.layoutML` | `kCylinder`, `kTurboStaves` (default), `kStaggered` | |
| `TRKBase.layoutOT` | `kCylinder`, `kTurboStaves`, `kStaggered` (default) | |
| `TRKBase.layoutSRV` | `kPeacockv1` (default), `kLOISymm` | `kLOISymm` produces radially symmetric service volumes, as used in the LoI |

For example, a geometry with fully cylindrical tracker barrel (for all layers in VD, ML and OT) can be obtained by
```bash
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7 changes: 7 additions & 0 deletions Detectors/Upgrades/ALICE3/TRK/base/include/TRKBase/TRKBaseParam.h
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Expand Up @@ -39,6 +39,11 @@ enum eVDLayout {
kIRIS4a,
};

enum eSrvLayout {
kPeacockv1 = 0,
kLOISymm,
};

struct TRKBaseParam : public o2::conf::ConfigurableParamHelper<TRKBaseParam> {
std::string configFile = "";
float serviceTubeX0 = 0.02f; // X0 Al2O3
Expand All @@ -49,10 +54,12 @@ struct TRKBaseParam : public o2::conf::ConfigurableParamHelper<TRKBaseParam> {
eLayout layoutML = kTurboStaves; // Type of segmentation for the middle layers
eLayout layoutOT = kStaggered; // Type of segmentation for the outer layers
eVDLayout layoutVD = kIRIS4; // VD detector layout design
eSrvLayout layoutSRV = kPeacockv1; // Layout of services

eLayout getLayoutML() const { return layoutML; }
eLayout getLayoutOT() const { return layoutOT; }
eVDLayout getLayoutVD() const { return layoutVD; }
eSrvLayout getLayoutSRV() const { return layoutSRV; }

O2ParamDef(TRKBaseParam, "TRKBase");
};
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8 changes: 6 additions & 2 deletions Detectors/Upgrades/ALICE3/TRK/simulation/include/TRKSimulation/TRKServices.h
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Expand Up @@ -51,6 +51,8 @@ class TRKServices : public FairModule
void createMiddleServices(TGeoVolume* motherVolume);
void createOuterDisksServices(TGeoVolume* motherVolume);
void createOuterBarrelServices(TGeoVolume* motherVolume);
void createMLServicesPeacock(TGeoVolume* motherVolume);
void createOTServicesPeacock(TGeoVolume* motherVolume);
void createVacuumCompositeShape();
void excavateFromVacuum(TString shapeToExcavate);
void registerVacuum(TGeoVolume* motherVolume);
Expand All @@ -65,12 +67,14 @@ class TRKServices : public FairModule
float mColdPlateX0;

// Services
float mFiberArea = 7.1e-2; // cm^2
float mPowerBundleArea = 1.13; // cm^2
float mFiberComposition[2] = {0.5, 0.5}; // SiO2, PE
float mPowerBundleComposition[2] = {0.09, 0.91}; // Cu, PE
float mPowerBundleComposition[2] = {0.08, 0.92}; // Cu, PE (with jacket)
float mPowerBundleJacketComposition[2] = {0.06, 0.94}; // Cu, PE
float mWaterBundleComposition[2] = {0.56, 0.44}; // PU, H2O
float mWaterBundleDiskComposition[2] = {0.44, 0.56}; // PU, H2O
float mMiddleDiskThickness = 1.0; // cm
// float mMiddleDiskThickness = 1.0; // cm
std::vector<float> mCableFanWeights = {0.5, 0.3, 0.2}; // relative weights of the fan layers

ClassDefOverride(TRKServices, 1);
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