COMBINED SIMULATION METHODOLOGY FOR A COMPLETE CHARACTERIZATION OF IONIZING RADIATION EFECTS IN DETECTION DEVICES METODOLOGÍA COMBINADA DE SIMULACIÓN PARA UNA CARACTERIZACIÓN COMPLETA DE LOS EFECTOS DE LA RADIACIÓN IONIZANTE EN DISPOSITIVOS DE DETECCIÓN

MARTIN, NICOLAS; SOFO-HARO, MIGUEL; VALENTE, MAURO

Anales AFA

Asociación Física Argentina

Lugar: Tandil; Año: 2023 vol. 34 p. 82 - 86

0327-358X

Ionizing radiation detection devices have been widely used in recent years in various applications and experimentalfields, such as high energy physics, nuclear physics, and medical imaging. Detailed description of their operationalproperties and their characterization by means of numerical modelling, as simulations, are key issue to understandthe characteristics of radiation detectors in terms of efficiency, resolution and signal-to-noise ratio, since they allowoptimizing parameters that will be further used. The modelling processes, as the simulations, are routinely carried outusing various tools, like Monte Carlo approaches, for instance: PENELOPE, FLUKA or GEANT4 are used to studythe interaction of the radiation with the detector accounting for the whole physical processes. However, transportingelectron/hole pairs, as generated through the device sensor to conform the corresponding electronic signals uses toolsbadsed on the finite element method, such as TCAD (Technology Computer Aided Design), which are developedmainly to help the microelectronics industry to design products. Usually, modelling approaches for radiation transportand electonic signal production are not integrated, thus performing the simulation process by splitting the problem intosucessive independent phases. Within this framework, the present study proposes, implements, and reports on a novelmethodology that allows combining the two approaches aimed at integrating the complete simulation, thus achieving astep-by-step integrated modelling flow to describe the interaction of ionizing radiation with the sensor along with thetransport of the generated charge to the photodiodes and, finally, to the generation of electronic signals.