Linear/Gaussian approximation of millimetric spatial uncertainties in particle detectors: A showcase about muon tomography based on GEANT4 simulations
Résumé
The precise characterization of the spatial uncertainties is a cornerstone for the reliable particle tracking in the modern detector systems. In this study, two approaches, i.e. the linear tracking perturbation and the Gaussian tracking perturbation, which model and simulate the linear and Gaussian spatial uncertainties within the context of particle physics experiments are presented, respectively. Their application in muon tomography through the GEANT4 simulations are demonstrated by investigating how millimetric spatial uncertainties affect the distribution of the scattering angle as well as the variation of the scattering angle with respect to the kinetic energy. This approach provides a systematic and reproducible framework for evaluating the impact of different uncertainty models on the performance of tracking algorithms with all the code and simulation tools made publicly available on GitHub.
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