Simulation of Energy Transport in Novel Materials Using G4CMP

The key challenge in dark matter detection is developing highly sensitive detectors for low-energy depositions coming from Light Dark matter interaction with the target materials. In this context, materials with low energy-phonon excitations hold great promise. We investigate energy transport in novel materials with phonon excitations using G4CMP simulations. Given G4CMP’s current limitation to Silicon and Germanium materials, we extend its capabilities by incorporating novel materials for phonon transport, such as Al2O3, GaAs, LiF, Al, CaF₂ and CaWO₄.This work presents the physical formalism for integrating these materials into G4CMP, alongside experimental validation of key simulation parameters. Furthermore, we assess the performance of various phonon detector devices employing these materials, examining their readout schemes, energy threshold limits, and potential applications in qubit detector technology for dark matter searches.