Device for determining a deposited dose and associated method

A determination device for determining a dose deposited in a scintillator by an ionizing radiation, comprising:

• a scintillator (I) so configured as to be irradiated by the ionizing radiation and capable of emitting scintillation photons during the interaction with the ionizing radiation;
• a measurement device comprising a single photodetector, the photodetector being a low-noise photodetector, the determination device being configured in such a way that the photodetector operates in single photon counting mode, the photodetector supplying, at an outlet of the photodetector, a measurement of the total intensity (Itotal(E)) of light received by the photodetector from the scintillator;
• and
• an analyzer configured to determine a dose deposited in the scintillator by the ionizing radiation only from the total intensity (Itotal(E)) of light measured by the photodetector and a predetermined constant (α1, α2, α3) depending only on the scintillator, the light output of the determination device and the type of the ionizing radiation.