FLASH radiotherapy, which delivers ultra-high dose rates (UHDR) in microsecond-scale pulses, demands real-time, high-precision dosimetry to investigate the so-called FLASH effect. However, conventional systems struggle to operate reliably under such extreme conditions. This letter presents a novel dosimetric system combining a synthetic diamond detector with custom front-end and acquisition electronics, specifically designed for UHDR electron beam diagnostics. The system enables real-time measurements of pulse duration with ±8 ns resolution, supports charge-per-pulse values up to 40 nC with 10 bits of resolution, and provides instantaneous dose rate estimates in the MGy/s range. These features allow accurate quantification of pulse parameters and cumulative dose, making the system a robust tool for UHDR beam characterization and the commissioning of FLASH-capable linear accelerators, with direct relevance to preclinical FLASH research.
Salvatori, S., Pettinato, S., Sinisi, G., Galluzzo, L., Felici, G., Girolami, M., et al. (2025). A Novel Diamond-Based Radiation Monitoring System for Real-Time Diagnostics of Pulsed Electron Beams. IEEE SENSORS LETTERS, 9(8), 1-4 [10.1109/lsens.2025.3588265].
A Novel Diamond-Based Radiation Monitoring System for Real-Time Diagnostics of Pulsed Electron Beams
Pettinato, S.;Sinisi, G.;Felici, G.;Girolami, M.;Rossi, M. C.
2025-01-01
Abstract
FLASH radiotherapy, which delivers ultra-high dose rates (UHDR) in microsecond-scale pulses, demands real-time, high-precision dosimetry to investigate the so-called FLASH effect. However, conventional systems struggle to operate reliably under such extreme conditions. This letter presents a novel dosimetric system combining a synthetic diamond detector with custom front-end and acquisition electronics, specifically designed for UHDR electron beam diagnostics. The system enables real-time measurements of pulse duration with ±8 ns resolution, supports charge-per-pulse values up to 40 nC with 10 bits of resolution, and provides instantaneous dose rate estimates in the MGy/s range. These features allow accurate quantification of pulse parameters and cumulative dose, making the system a robust tool for UHDR beam characterization and the commissioning of FLASH-capable linear accelerators, with direct relevance to preclinical FLASH research.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
