Abstract
Abstract
This study presents a Monte Carlo simulation tool for
modeling the transportation processes of thermal electrons in noble
liquids, specifically focusing on liquid argon and liquid xenon.
The study aims to elucidate the microscopical mechanisms governing
the drift and diffusion of electrons within the context of time
projection chambers (TPCs), with detailed considerations of coherent
electron-atom scattering and electric field force. The simulation
tool is implemented in the Geant4 framework, allowing for the
exploration of electron transport parameters, including drift
velocity, longitudinal diffusion coefficient, and transverse
diffusion coefficient. The simulation is validated by comparing its
results for drift velocity and diffusion coefficients with
experimental measurements, revealing reasonable agreement in the low
to moderate electric field ranges. Discrepancies between the
simulation and experimental measurements are discussed, emphasizing
the necessity for enhanced cross-section calculations and
high-precision sampling. Despite certain limitations, the
simulation tool provides valuable insights into electron transport
in noble liquids, establishing a foundation for future enhancements
and applications in various research areas