Speaker
Description
The Allpix Squared Simulation Framework is a versatile, open-source simulation framework for semiconductor pixel detectors. Its eases the implementation of detailed simulations for single sensors as well as more complex structures with multiple detectors, and small experiments. Over the past decade, it has been used in many projects in high-energy physics as well as medical imaging, synchrotron light sources, and satellite-based detectors. It is capable of simulating a wide range of detector types for various application scenarios, e.g. through its interface to Geant4 to describe the interaction of particles with matter, and the different algorithms for charge transport and digitization. The simulation chain is arranged with the help of intuitive configuration files and an extensible system of modules, which implement the individual simulation steps. Detailed electric field maps imported from finite-element TCAD simulations can be used to precisely model the drift behavior of the charge carriers, bringing a new level of realism to the Monte Carlo simulation of semiconductor particle detectors.
Currently, Allpix Squared is undergoing several improvements to its core framework in preparation of a new major release. and new simulation modules for effects such as self-interaction of charge carriers are being worked on, further extending the application range. This contribution provides an overview of the framework and its components, highlighting recent applications for vertex detector simulations.