High resolution-3-D position sensitive detector for gamma rays

An apparatus for determining a position of gamma ray interaction, comprising:

• a region containing a medium, the medium being adapted to emit both ionization electrons and light in response to an interaction between a gamma ray and the medium;
• a plurality of photodetectors, adapted to determine a first multi-dimensional position of the interaction;
• a collector, adapted to determine a second multi-dimensional position of the interaction by localizing the position of the interaction in two dimensions in the collector based on a position of the ionization electrons collected in the collector;
• and
• a plurality of field wires, adapted to produce a drift field in the medium that directs ionization electrons to the collector.

An apparatus for determining a position of a gamma ray interaction, the apparatus comprising:

• means for emitting light in a medium in response to an interaction between a gamma ray and the medium;
• means for determining a first multi-dimensional position of the interaction from a detected distribution of light emitted from the medium;
• and
• means for producing a drift field in the medium to direct ionization electrons resulting from the interaction from which a second multi-dimensional position of the interaction is determinable based on a position of the ionization electrons.

An apparatus for determining a position of a gamma ray interaction, the apparatus comprising:

• means for emitting light in a medium in response to an interaction between a gamma ray and the medium;
• means for determining a first multi-dimensional position of the interaction from a difference of times at which light emitted from the medium arrives at a plurality of photodetectors;
• and
• means for producing a drift field in the medium to direct ionization electrons resulting from the interaction from which a second multi-dimensional position of the interaction is determinable based on a position of the ionization electrons.

An apparatus for determining a position of a gamma ray interaction, the apparatus comprising:

• means for emitting light in a medium in response to an interaction between a gamma ray and the medium;
• means for determining a first multi-dimensional position of the interaction from a difference of times at which light emitted from the medium arrives at a plurality of photodetectors and from a distribution of light emitted from the medium and detected by the plurality of photodetectors;
• and
• means for producing a drift field in the medium to direct ionization electrons resulting from the interaction from which a second multi-dimensional position of the interaction is determinable based on a position of the ionization electrons.