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Analysis of Modeling Scale for Multi-physics Simulation of Charge Collection Process in Diamond

A analysis for choosing an appropriate scale of numerical model in the multi-physics simulation of charge collection process in diamond is established in this work. The charge collection process induced by incident particles is numerically studied. The influence of the scale parameters is analyzed by an multi-physics method based on the drift and diffusion model. Some important parameters for the numerical simulation are derived and fitted. The appropriate value of the diamond radius should be greater than 200 μm according to the results. This work provides is useful for further optimization of diamond detectors and other diamond devices.