Speaker
Description
The Recoil Filter Detector (RFD)[1] is an ancillary device for gamma-ray spectrometers. It measures the time of flight of evaporation residues in coincidence with gamma-rays, providing a significant improvement of gamma spectra by reducing Doppler broadening and excluding unwanted background.
A new version of RFD is being developed for the EAGLE array at the Heavy Ion Laboratory at the University of Warsaw[2]. The ongoing modifications include a significant upgrade of secondary electron detectors made of fast plastic scintillators and segmented SiPM arrays.
The first results from the detector simulation performed with the Geant4 toolkit were reported in [3]. This presentation will show the latest developments of this simulation, with a focus on the light propagation in the scintillator foil and the SiPM, the response of the detector to various radiations, and comparisons with the prototype. The secondary electron beam acceleration and focusing are also explored and optimized using a simulation of the electrostatic lens with the SIMION[4] software.
References
[1] W. Meczynski et al., Nucl. Instrum. Methods Phys. Res. A 580, 1310 (2007).
[2] M. Matejska-Minda et al., Acta Phys. Polon. Supp. 18, 2 (2025).
[3] C. Hiver et al., Acta Phys. Pol. B Proc. Suppl. 19, 1 (2026).
[4] Adaptas Solutions, Simion, https://simion.com (2020).