Geant4 Application for Efficiency Simulation of PbF 2 Based Calorimeters

This study aims to create a new tool for fast computer simulations allowing one to design advanced electromagnetic calorimeters with the required properties. The application must calculate the calorimeter efficiency and measure the particles' energies, momenta and interaction time to detect the particles. This application should become the basis for a new technology of positron emission tomography. To solve the problem, a new C++ application based on Geant4 simulation toolkit has been developed. To monitor the response of calorimeters to different types of primary particles, we used different auxiliary Geant4 classes. In addition, we compare the simulation results for the detectors of three different setups, taking into account the detection of both electrons and gamma-quanta, and analyze their efficiency. To evaluate the capability of calorimeters to work under radiation load, we use an experimentally measured transmission function of radiation-damaged PbF2. Three calorimeter setups exploiting PbF2 were simulated with a new C++ application based on Geant4. We showed that such type of calorimeter has an energy resolution of 4.1%/ . -0pt√(E_e^ + [GeV]) and good linearity of response for GeV positrons measurements. The efficiency of such structures is found to be approximately 20