Ionizing-radiation beam monitoring system

An ionizing-radiation beam monitoring system comprising:

• an enclosure structure with at least one ultra-thin window to an incident ionizing-radiation beam, wherein the ultra-thin window is highly transmissive to ionizing-radiation;
• at least one scintillator within the enclosure structure that is substantially directly in an incident ionizing-radiation beam path;
• at least one pixelated imaging system within the enclosure structure comprising at least one pixelated photosensor device optically coupled to an imaging lens located out of an incident ionizing-radiation beam path;
• and
• a mirror in close proximity to each imaging lens and located out of an incident ionizing-radiation beam path and obliquely facing both the lens of the pixelated imaging system and the scintillator at an angle, wherein each pixelated imaging system and its associated close proximity mirror comprises a folded optical system configuration with respect to its view of the scintillator surface to reduce a thickness or depth of the enclosure structure and having a projection of its optical axis oriented at an angle of incidence of 45±35 degrees to a surface of the scintillator.

A method of monitoring a beam of ionizing-radiation in real-time, including tracking of beam position, movement, intensity profile, beam fluence and external dosimetry, the method comprising:

• receiving the ionizing-radiation beam in a scintillator enclosed in a light-tight structure with an entrance and exit highly transmissive to the incident ionizing-radiation beam, a folded optical system comprising a mirror in close proximity to each imaging lens and located out of an incident ionizing-radiation beam path and obliquely facing both the lens of the image collection system and the scintillator at an angle, wherein each image collection system and its associated close proximity mirror comprises a folded optical system configuration with respect to its view of the scintillator surface;
• wherein a multitude of emitting photons are created by the ionizing-radiation beam passing through the scintillator, some of which emitted photons are captured by the pixelated photosensor device of each pixelated imaging system;
• causing a train of image data frames streaming out from each pixelated imaging system to a computer system;
• wherein the computer system processes and analyzes the image data streaming from each pixelated imaging system in real-time to track the beam position, movement, intensity profile, beam fluence and external dosimetry.