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Incidence position determination of alfa particles on phoswich plastic scintillator detectors coupled to pixelated Silicon photomultipliers based on a image model

Grant number: 21/07397-0
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): November 01, 2021
Effective date (End): August 31, 2022
Field of knowledge:Physical Sciences and Mathematics - Physics - Nuclear Physics
Principal researcher:Jose Roberto Brandão de Oliveira
Grantee:Felipe Casarin
Home Institution: Instituto de Física (IF). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Associated research grant:19/07767-1 - Nuclear reactions with weakly-bound or cluster-structured radioactive and stable nuclei, AP.TEM

Abstract

A model for light pulse transmission in phoswich plastic scintillator detectors is proposed for the extraction of the incidence position of charged particles in two dimensions. Computer programs will be developed for implementation of the theoretical model, and for parameter adjustments based on the comparison with existing experimental data with alpha particles. It is expected that the model will allow for a reduction of image aberration of the point of incidence position of the particle, and, eventually, improve the special resolution which can be obtained. In a second stage, the improvement of the processing speed of the program for the position evaluation on an event-by-event basis will be attempted so as to improve its efficiency and adequate its employment for nuclear reaction measurements with ion beams. (AU)

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