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Descrizione
Laser-accelerated electron beams in the Very High-Energy Electron (VHEE) range are receiving increasing interest for biomedical applications. Furthermore, compact accelerator systems for the exciting field of FLASH radiotherapy may be made precisely accessible by laser-driven VHEE beams. Nevertheless, radiobiology experiments carried out using laser-driven beams require the real-time knowledge of the dose delivered to the sample. For this reason, we have developed an online dose monitoring procedure, using an Integrating Current Transformer (ICT) coupled to a suitable collimator, that allows the estimation of the delivered dose on a shot-to-shot basis under well-defined assumptions. Such a dose measuring method through electron charge was validated through cross-calibration with standard offline dosimetry using RadioChromic Films (RCFs).