Energy and position sensitive radiation detectors

A device for measuring the interaction position of incident radiation, comprising:

• a scintillator for emitting light of a first frequency in response to incident radiation;
• a plurality of wave-shifting optical fibers positioned adjacent to each other on a surface of said scintillator;
• first means for measuring light reemitted by each of said plurality of wave-shifting optical fibers in response to said emitted light from said scintillator wherein said first means for measuring includes a means for determining the distribution of reemitted light along the said plurality of optical fibers in order to provide a determination of the position at which incident radiation interacted with said scintillator.

A position-sensitive radiation detector, comprising:

• at least one set of a plurality of wave-shifting optical fibers positioned proximal to a respective surface of a scintillator positioned to receive an incident radiation;
• at least one first photomultiplier positioned to receive light reemitted from one end of each of said plurality of optical fibers from each respective set of optical fibers;
• a second photomultiplier positioned proximal to a length of one of said at least one set of wave-shifting optical fibers for receiving light from said scintillator which passes through said one set of optical fibers whereby said at least one first photomultiplier provides a measurement of a position of incident radiation on said scintillator and wherein said one second photomultiplier provides a measurement of the energy of said incident radiation.

A position-sensitive radiation detector, comprising:

• at least one set of a plurality of waveshifting optical fibers positioned proximal to a respective surface of a scintillator positioned to receive incident radiation;
• at least one crossed wired anode photomultiplier respectively associated with said at least one set of waveshifting optical fibers, said at least one crossed wire anode photomultiplier providing four output signals;
• means for measuring said four output signals and providing position resolution for the centroid of an extended distribution of incident photons provided by said scintillator and delivered by said plurality of waveshifting fibers of each of said at least one set in order to establish an interaction position of said incident radiation on said scintillator.