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geant events for multiple scattering

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This commit is contained in:
AndreaRigoni
2026-03-14 23:33:31 +00:00
parent 692cdf7ae3
commit c63a1ae047
18 changed files with 681 additions and 90 deletions
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57
src/HEP/Geant/GeantEvent.h
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@@ -30,34 +30,61 @@
#include "Core/Vector.h"
#include "Math/Dense.h"
#include "Detectors/ChamberHitEvent.h"
#include <string>
namespace uLib {
namespace Geant {
class GeantEventData {
// Forward declaration for friend access
class SteppingAction;
///////////////////////////////////////////////////////////////////////////////
/// GeantEvent — output of a Geant4 simulation run.
///
/// m_Momentum and m_GenVector are set from the EmitterPrimary at generation.
/// During simulation, each scattering interaction deposits a Delta in m_Path,
/// recording the change of momentum and direction at each step boundary.
///////////////////////////////////////////////////////////////////////////////
class GeantEvent {
public:
uLibGetMacro(EventID, Id_t) uLibGetMacro(Momentum, Scalarf)
uLibConstRefMacro(GenPos, Vector3f) uLibConstRefMacro(GenDir, Vector3f)
uLibConstRefMacro(ChEvents, Vector<ChamberHitEventData>)
/// A single interaction step along the muon path.
struct Delta {
Scalarf m_Length; ///< step length through the solid
Scalarf m_Momentum; ///< momentum magnitude at this step
HVector3f m_Direction; ///< direction after scattering
std::string m_SolidName; ///< name of the solid where interaction occurred
uLibGetMacro(Length, Scalarf)
uLibGetMacro(Momentum, Scalarf)
uLibConstRefMacro(Direction, HVector3f)
uLibConstRefMacro(SolidName, std::string)
Delta() : m_Length(0), m_Momentum(0), m_Direction(HVector3f::Zero()) {}
};
// --- Read-only accessors (public) --- //
uLibGetMacro(EventID, Id_t)
uLibGetMacro(Momentum, Scalarf)
uLibConstRefMacro(GenVector, HLine3f)
uLibConstRefMacro(Path, Vector<Delta>)
private:
friend class GeantEvent;
Id_t m_EventID;
Scalarf m_Momentum;
Vector3f m_GenPos;
Vector3f m_GenDir;
Vector<ChamberHitEventData> m_ChEvents;
};
HLine3f m_GenVector;
Vector<Delta> m_Path;
class GeantEvent : public GeantEventData {
public:
uLibSetMacro(EventID, Id_t) uLibSetMacro(Momentum, Scalarf)
uLibRefMacro(GenPos, Vector3f) uLibRefMacro(GenDir, Vector3f)
uLibRefMacro(ChEvents, Vector<ChamberHitEventData>)
GeantEvent() : m_EventID(0), m_Momentum(0), m_GenVector(HLine3f()), m_Path() {}
// SteppingAction can populate the private fields during simulation
friend class SteppingAction;
};
} // namespace Geant
} // namespace uLib
#endif // GEANTEVENT_H
#endif // U_GEANTEVENT_H