Stray radiation produced in FLASH electron beams characterized by the MiniPIX Timepix3 Flex detector

Abstract This work aims to characterize ultra-high dose rate pulses (UHDpulse) electron beams using the hybrid semiconductor pixel detector. The Timepix3 (TPX3) ASIC chip was used measure composition, spatial, time, and spectral characteristics of secondary radiation fields from pulsed 15–23 MeV beams. challenge is develop a single compact detector that could extract spectrometric dosimetric information on such high flux short-pulsed fields. For beam measurements, PMMA plates 1 8 cm thickness were placed in front beam, with pulse duration 3.5 µs. detectors silicon sensors 100 500 µm shifting stage allowing for data acquisition at various lateral positions axis. use FLEXI configuration enables suitable measurements in-situ minimal self-shielding. Preliminary results highlight both technique detector’s ability individual UHDpulses delivered short pulses. In addition, two signal chains per-pixel estimation particle scattered rates (DRs) distances core, mixed