File MaterialInteraction.hpp
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namespace Acts
Note
This file is foreseen for the
Geometry
module to replaceExtent
Typedefs
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struct InteractionVolume
- #include <Acts/Material/MaterialInteraction.hpp>
The Material interaction volume struct It acts as a switch between detctor and tracking volume as long as those co-exist alongside.
Public Functions
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InteractionVolume() = default
Empty constructor.
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inline InteractionVolume(const Experimental::DetectorVolume *dv)
Constructor from detector volume.
- Parameters
dv – The detector volume
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inline InteractionVolume(const TrackingVolume *tv)
Constructor from tracking volume.
- Parameters
tv – The tracking volume
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inline bool empty() const
Check if the volume is valid.
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inline GeometryIdentifier geometryId() const
Forward the geometry identifier.
Public Members
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const Experimental::DetectorVolume *detectorVolume = nullptr
The detector volume.
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const TrackingVolume *trackingVolume = nullptr
The tracking volume.
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InteractionVolume() = default
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struct MaterialInteraction
- #include <Acts/Material/MaterialInteraction.hpp>
The Material interaction struct It records the surface and the passed material This is only necessary recorded when configured.
Public Members
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double deltaP = 0.0
The momentum change due to the interaction.
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GeometryIdentifier intersectionID
The ID where the interaction occurred.
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MaterialSlab materialSlab
The effective, passed material properties including the path correction.
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double pathCorrection = 1.
The path correction factor due to non-zero incidence on the surface.
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double sigmaPhi2 = 0.0
Expected phi variance due to the interactions.
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double sigmaQoP2 = 0.0
Expected q/p variance due to the interactions.
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double sigmaTheta2 = 0.0
Expected theta variance due to the interactions.
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double time = 0.0
The particle time at the interaction.
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bool updatedVolumeStep = false
Update the volume step to implement the proper step size.
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InteractionVolume volume = {}
The volume where the interaction occurred.
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double deltaP = 0.0
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struct RecordedMaterial
- #include <Acts/Material/MaterialInteraction.hpp>
Simple result struct to be returned It mainly acts as an internal state which is created for every propagation/extrapolation step.
Public Members
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double materialInL0 = 0.
The accumulated materialInL0.
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std::vector<MaterialInteraction> materialInteractions
This one is only filled when recordInteractions is switched on.
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double materialInX0 = 0.
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double materialInL0 = 0.
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struct InteractionVolume