The chassis that will contain the GAGG crystal and photomultiplier tubes sensor. The scintillator crystal is not present in this photo. The PMTs are located on the two small sides of the scintillator which is housed in the center of the box. PMTs can be used in coincidence or singularly, respectively for detecting scintillation events - which producing a multitude of photons are simultaneously observed on both - and singularly. Located at the center and hidden by light-proof tissue are the two chassis entrance, from which the proton beam will reach the GAGG crystal.
The experimental setup as seen in the research room of the Trento Proton Therapy Centre, just before the first irradiation run. The proton beam leaves tube on the background, reaches a Mini-Q monitor and finally find the experiment's chassis entrance. Cyclotron magnet focus the beam along radial and vertical direction and are here visible just before the nozzle. Between the nozzle and the experiment chassis lies the Mini-q monitor, a segmented ionization chamber used for aquiring information about proton beam intensity and shape during irradiation runs. On the background lies the experiment's chassis.
