MC simulation of coherent crystalline effects in GEANT4

GEANT4 and Monte Carlo Simulations

Monte Carlo simulations are a key component in particle physics, allowing researchers to statistically model the behavior of particles as they traverse different materials. Within the context of GEANT4, these simulations enable the detailed tracking of particles through matter, accounting for various interactions that occur. This level of detail is crucial for accurately predicting experimental outcomes and for designing new experiments.

Research and Development of Coherent Interaction Models

At the heart of this effort, researchers are continuously developing and extending models to better simulate the coherent interactions of charged particles and photons in both crystalline and amorphous materials. Coherent interactions refer to processes where the incident particle or photon interacts with the material in a phase-coordinated manner, leading to unique effects that are not observed in incoherent scattering scenarios.

The Ferrara research group, for example, focuses on advancing these models, fisrt in CRYSTALRAD and RADCHARM++ simulations code, that are the baseline for channeling and channeling radiation model implementation into GEANT4.
The implementation mechanism is GEANT4 FastSim interface, which is a PhysicsList independent model and is activated only in a certain G4Region, at a certain condition and for certain particles.

 Their work is particularly crucial for simulating the behavior of particles in oriented crystals. Such simulations are foundational for developing novel gamma-ray Light Sources like crystalline undulators, which are explored in various high-impact projects. Additionally, these models are essential for designing compact calorimeters that utilize scintillator crystals, enhancing our ability to detect and measure high-energy particles.