Study of dynamic geometry in simulation and reconstruction of liquid-based detector

Abstract

Abstract The non-uniformity of liquid in a detector is difficult to be described with the traditional detector description method used in Geant4. To solve the simulation and reconstruction problem with dynamic and non-uniform liquid-based detector, a method of combining GDML and tessellated 3D modeling is put forward to export the detector geometry information from computational fluid dynamics simulation software and import it into the detector simulation software. This method can be used to study the effects of non-uniformity on detector performance. It can be further used to solve other dynamic geometry-related problems in particle and nuclear physics experiments.