PlasmaMLPALLASSteppingAction.cc File Reference

Implements step-level tracking, data extraction, and event updates for the PALLAS simulation. More...

#include "PlasmaMLPALLASSteppingAction.hh"

Include dependency graph for PlasmaMLPALLASSteppingAction.cc:

Functions
void	UpdateCollimators (RunTallyCollimators &tally, G4float x, G4float y, G4float z, G4float energy)
	Update collimator interaction information in the tally.
void	UpdateYAG (RunTallyYAG &tally, G4float x, G4float y, G4float z, G4float energy, G4float energyDeposited, G4float parentID, G4int particleID, const G4String &volumeNamePostStep, G4bool trackingStatus, G4Track *track)
	Update YAG (Yttrium Aluminum Garnet screen) tally with particle data.

Detailed Description

Implements step-level tracking, data extraction, and event updates for the PALLAS simulation.

Author

Arnaud HUBER huber.nosp@m.@lp2.nosp@m.ib.in.nosp@m.2p3..nosp@m.fr

Date

2025

Copyright

PALLAS Project - GEANT4 Collaboration

This file contains the method definitions for the PlasmaMLPALLASSteppingAction class declared in PlasmaMLPALLASSteppingAction.hh. It manages:

• Extraction of particle positions, momentum, energy, and track metadata at each Geant4 step
• Handling of quadrupole crossing information for beamline statistics
• Detection of interactions with collimators and updating of corresponding tallies
• Updating of YAG screen statistics including energy deposition and exit positions
• Optional termination of particles when leaving specific volumes or reaching collimators

The stepping action workflow:

• UserSteppingAction:
  • Extracts pre-step and post-step positions and momenta
  • Computes kinetic energy and deposited energy per step
  • Stores initial beam parameters at first step of primary particles
  • Updates quadrupole statistics at entry/exit
  • Updates collimator tallies and stops tracks if necessary
  • Updates YAG screen tallies and deposited energies
  • Kills particles leaving the world volume

Note

This class relies on Geant4's step action mechanism to record fine-grained tracking information suitable for later beamline analysis.

Function Documentation

UpdateCollimators()

void UpdateCollimators	(	RunTallyCollimators &	tally,
		G4float	x,
		G4float	y,
		G4float	z,
		G4float	energy
	)

Update collimator interaction information in the tally.

Parameters

tally	Collimator tally to update.
x	Interaction X position [mm].
y	Interaction Y position [mm].
z	Interaction Z position [mm].
energy	Kinetic energy at interaction [MeV].

UpdateYAG()

void UpdateYAG	(	RunTallyYAG &	tally,
		G4float	x,
		G4float	y,
		G4float	z,
		G4float	energy,
		G4float	energyDeposited,
		G4float	parentID,
		G4int	particleID,
		const G4String &	volumeNamePostStep,
		G4bool	trackingStatus,
		G4Track *	track
	)

Update YAG (Yttrium Aluminum Garnet screen) tally with particle data.

Parameters

tally	YAG tally to update.
x	Exit X position [mm].
y	Exit Y position [mm].
z	Exit Z position [mm].
energy	Particle kinetic energy [MeV].
energyDeposited	Deposited energy [keV].
parentID	ID of the parent track.
particleID	PDG encoding of the particle.
volumeNamePostStep	Name of the post-step volume.
trackingStatus	Whether particle tracking is active.
track	Pointer to the current Geant4 track.